Toolkits > com.ibm.streamsx.network 3.0.0 > com.ibm.streamsx.network.source > PacketDPDKSource
PacketDPDKSource is an operator for the IBM InfoSphere Streams product that captures live network packets from one of the network interfaces attached to the machine where it executes. The operator function and structure are very similar to PacketLiveSource; see that operator's documentation for details of common functions and general background. The primary difference between these related operators is that PacketDPDKSource leverages the DPDK libraries available at http://www.dpdk.org for higher performance and lower processing overhead.
Output filters and attribute assignments are SPL expressions. They may use any of the built-in SPL functions, and any of these functions, which are specific to the PacketFileSource operator:
The PacketDPDKSource operator steps quietly over 'jmirror' headers prepended to packets by Juniper Networks 'mirror encapsulation'.
This operator is part of the network toolkit. To use it in an application, include this statement in the SPL source file:
use com.ibm.streamsx.network.source::*;
Network interfaces normally ignore packets that are not addressed to them. However, when 'promiscious' mode is enabled on a network interface, it can capture all network packets on its ethernet segment, even those that are not addressed to it. This is sometimes referred to as "network sniffing". Modern ethernet switches normally send network interfaces only packets that are addressed to them; 'promiscious' mode is useful only when a switch has been specifically configured to send packets to a network interface that are not addressed to it. This is sometimes referred to as "mirroring".
The PacketDPDKSource operator will enable 'promiscuous' mode in a ethernet interface when its 'promiscous' parameter is set to true.
There are very good documents for DPDK build/install/use on the DPDK website that should be referenced. Here are some notes of the steps that will help getting started on Streams:
Set environment variables (these are needed for DPDK and Streams builds and depend on your specific platform):
export EXTRA_CFLAGS=-fPIC export RTE_SDK=/home/<userid>/dpdk-2.2.0 # (point to install directory) export RTE_TARGET=x86_64-native-linuxapp-gcc OR export RTE_TARGET=ppc_64-default-linuxapp-gcc
Configure the DPDK build from the top directory
cd $RTE_SDK make config T=x86_64-native-linuxapp-gcc OR make config T=ppc_64-power8-linuxapp-gcc
Change configuration as needed. For example:
# Edit the .config files vi ./build/.config # Set key parameters CONFIG_RTE_BUILD_COMBINE_LIBS=y CONFIG_RTE_LIBRTE_MLX4_PMD=y (MLX4 NIC) CONFIG_RTE_BUILD_SHARED_LIB=y (e1000 NIC) OR CONFIG_RTE_BUILD_SHARED_LIB=n (MLX4 NIC) # Build the library make # Complete the build make install T=x86_64-native-linuxapp-gcc OR make install T=ppc_64-power8-linuxapp-gcc
There is also a Streams to DPDK glue library that must be built. To do this, make sure the RTE environment variables noted above are set and then do the following:
cd <toolkit-directory>/com.ibm.streamsx.network/impl/src/source/dpdk make
Build the Streams example application with the following steps:
cd <toolkit-directory>/samples/SamplePacketDPDKSource # Update the sample Makefile to use the appropriate libraries for your adapter type vi Makefile # Modify the operator parameters as needed for your NIC and environment vi TestPacketDPDKSource.spl make
Create a dpdk group for permisssions.
groupadd dpdk usermod -a -G dpdk <userid> groups <userid> # You may need to log out and back in to make sure your user is actively in the group. # Alternatively, you could use newgrp to change the current default group for the current shell session: newgrp dpdk
Configure and enable access to hugepages (You'll need to be root to do most of these):
# Make sure hugetlbfs is mounted, and the appropriate group owner and permissions are set: # (May need to umount /dev/hugepages first, to make sure the right gid and mode settings take.) mount -t hugetlbfs nodev /dev/hugepages -o gid=dpdk,mode=1770 # Enable a suitable number of huge pages of the appropriate size, on the appropriate NUMA nodes # The exact number and size of hugepages will depend on your workload and packet rates. # Note: Fewer, larger hugepages can be used if available, such as on POWER systems. # The exact NUMA nodes that need huge pages will depend on adapter location and which CPUs the # DPDK application threads will be running on. echo 1000 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages # Ensure all users in the dpdk group can lock an unlimited amount of memory. # Add a line to /etc/security/limits.conf like the following: @dpdk - memlock unlimited # This will take effect at next login. # An alternative to setting up huge pages after booting each time, you could add # the mount options to /etc/fstab or a systemd unit file, and add a line to # /etc/sysctl.conf with the number of huge pages to reserve: vm.nr_hugepages = 1000 # These will be spread over the NUMA nodes, and be of the default size for the system. # If you change these files, you will not need to run the explicit mount or echo 1000 # commands, above, before running the DPDK applications (provided you have rebooted # the system after making the changes).
Additional Items for e1000 Adapters (RHEL7):
# Bring the interface down ifconfig <eth-interface> down OR ip link set dev <eth-interface> down # Load the intel DPDK uio driver: modprobe uio insmod <dpdk-path>/dpdk-2.2.0/build/kmod/igb_uio.ko # Bind the interface to the intel DPDK uio driver: <dpdk-path>/dpdk-2.2.0/tools/dpdk_nic_bind.py --bind=igb_uio <eth-interface> <dpdk-path>/dpdk-2.2.0/tools/dpdk_nic_bind.py --status # Ensure the dpdk group has full access to the new uio device: chown root:dpdk /dev/uio0 chmod 660 /dev/uio0 # Ensure the dpdk group has full access to config and resources for the new uio device: chown root:dpdk /sys/class/uio/uio0/device/config cdmod 660 /sys/class/uio/uio0/device/config chown root:dpdk /sys/class/uio/uio0/device/resource* chmod 660 /sys/class/uio/uio0/device/resource* # Alternatively, a system-level udev rule could be used to ensure the dpdk group had access to # any new uio device by adding a file at /etc/udev/rules.d/10-dpdk.rules with content like: SUBSYSTEM=="uio", GROUP="dpdk", MODE="0660" # but note that this will not give access to the config and resource files, so that step would still # need to be done manually (or in a script). If you do add a udev rule, it will take effect at the # next reboot, or, after forcing udev to reload rules (but then only at the time of the next uio bind): udevadm control --reload # If you need a particular interface to always be bound to the uio driver, at boot # time, the easiest way is to add the ifconfig down, modprobe/insmod, # dpdk_nic_bind.py, and chown/chmod commands to a simple startup script.
Additional Items for Mellanox Adapters (RHEL7). Assumes OFED packages have been installed. (See Mellanox Poll Mode Driver for DPDK and Mellanox OFED for more information.)
# Configure IB module. # Add a line to (or create) /etc/modprobe.d/mlnx.conf: options ib_uverbs disable_raw_qp_enforcement=1 # Make sure the mlx4 driver is re-loaded and uses the above settings: modprobe mlx4_en /etc/init.d/openibd restart # "ibstat" and "/etc/init.d/openibd status" are useful commands to verify things worked.
Other Adapters may require other additional items. See the DPDK documentation for more details.
# Submit normally: streamtool submitjob output/TestPacketDPDKSource.sab # Packet output can be found in the "data" directory.
Required: lcore
Optional: lcoreMaster, metricsInterval, nicPort, nicQueue, promiscuous
The PacketDPDKSource operator requires one or more output ports:
Each output port will produce one output tuple for each packet received if the corresponding expression in the outputFilters parameter evaluates true, or if no outputFilters parameter is specified.
Output attributes can be assigned values with any SPL expression that evaluates to the proper type, and the expressions may include any of the PacketDPDKSource result functions. Output attributes that match input attributes in name and type are copied automatically.
Required: lcore
Optional: lcoreMaster, metricsInterval, nicPort, nicQueue, promiscuous
Logical core number on which this operator will run.
Logical core number to be used for the master DPDK thread.
This optional parameter takes an expression of type float64 that specifies the interval, in seconds, for sending operator metrics to the Streams runtime. If the value is zero or less, the operator will not report metrics to the runtime, and the output assigment functions for libpcap statistics will be zero.
The default value is '10.0'.
NIC port of type uint32 which sources packets for this operator instance. Obtaining the proper mapping may require use of multiple tools, and varies by NIC.
Suggested tools to help identify NIC ports:
- ifconfig
- dpdk-*/tools/dpdk_nic_bind.py --status
- ibstat (for Mellanox NICs)
- lspci | grep -i net
NIC queue of type int32 which sources packets for this operator instance.
This optional parameter takes an expression of type 'boolean' that specifies whether or not 'promiscuous' mode should be enabled on the network interface.
This metric counts the number of packets received by the network interface, as counted by dpdk
This metric counts the number of packets dropped by the network interface, as counted by dpdk
This metric counts number of bytes of packet data processed by the operator.
This metric counts number of bytes of packet data processed by the operator.


Once upon a time there were four little Rabbits, and their names were - Flopsy, Mopsy, Cotton-tail, and Peter.
Once upon a time there were four little Rabbits, and their names were - Flopsy, Mopsy, Cotton-tail, and Peter.
Once upon a time there were four little Rabbits, and their names were - Flopsy, Mopsy, Cotton-tail, and Peter.


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It uses subtle animation and is responsive to device size.
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The 6809 microprocessor can only address 64K of memory. In order to address more than 64K, a method must be found which will allow the user to switch different blocks of memory into the CPUís address space. The ability to perform this function is generally referred to as Ďmemory management'. There are as many different ways to implement a memory management scheme as there are different computers in the world, and each method will have its own strong points and limitations. In the Color Computer 3, the GIME chip performs the Memory Management Unit (MMU) function. The GIME chip will allow 512K of RAM to be accessed by the CoCo 3. This 512K address range is called the physical address space. The physical address space is broken down into 64 blocks of 8K each. The six high order bits of any address ($00000-$7FFFF) are the block number. In a 128K machine that means that there will be 16 blocks which will actually have RAM in them, and the other 48 blocks will be treated as three sets of 16 blocks all three of which are mirrors of the high order 16 blocks. A 512K machine will, of course, have 64 blocks of RAM. The GIME chip determines this configuration and there is no known way at this time to trick, fool, or otherwise cajole the chip into allowing you to hang more RAM on the system without adding hardware to the computer. From this pool of 64 8K blocks you may select any eight to fill the CPUís memory space of 64K. The 64K range, which comprises the address range of the CPU, is referred to as the logical address space. In order to simplify the task of understanding how this is done, it is best for the reader to discard the concept of the fixed memory map of the computerís memory. From the point of view of the CPU, the Color Computer 3ís RAM is not one large contiguous block from $00000 - $7FFFF. This will undoubtedly cause a certain amount of confusion because the video display section of the Color Computer 3 does consider the RAM as one large contiguous block. Now, you may ask, if the memory is to be considered as 64 blocks of 8K, how does the CPU know where its memory is. That job is performed by the MMU registers which are located at $FFA0. The eight blocks, which you select as the CPUís memory, are mapped into the CPUís address space by the MMU registers as shown in Figure 1.
Figure 1 - Memory Management Unit Registers It is important to thoroughly understand the concept of memory blocks. The physical address space is composed of 64 physical blocks (they will be referred to simply as blocks). The logical address space is the range of $0-$FFFF which can be addressed by the CPU. The logical address space should be considered as composed of eight 8K blocks of RAM. The MMU registers determine which eight of the 64 blocks from the physical address space will compose the logical address space. As a natural extension, the logical address space may be thought of as being composed of eight logical blocks. The logical blocks are numbered from 0-7 as described in Figure 1 above. The logical blocks are not really actual memory (the physical blocks are actual memory), they are an 8K address space in the address range of the CPU and their position relative to one another may not change in the eyes of the CPU. The MMU registers have no effect whatsoever on the manner in which the GIME chip displays graphic or text information. For the purpose of graphics, the 512K is considered as one large contiguous super chunk of RAM. In order to make this easier to understand since we are in a "block" frame of mind, just consider the video display memory as 64 contiguous 8K blocks. In other words, the video display memory is just the physical address space and there is no way to move the blocks relative to one another. The process of setting up the CPUs memory space requires that you select eight blocks, which will comprise the logical address space. Then you must program the MMU registers with the block numbers selected. For example, if you wanted block 56 ($38) to occupy the CPU addresses $0000 - $1FFF (logical block 0), you must store the value $38 into address $FFA0. If you wanted the high 64K of RAM of either a 128K or 512K machine to occupy the logical address space as one contiguous 64K segment, you just load the values $38 - $3F consecutively into the consecutive addresses $FFA0 - $FFA7. This is how Basic sets up the CPUís memory space. It is important to realize that there is no prohibition against using the same block in more than one block of the logical address space. If you put the same block number in all of the MMU registers, then the same 8K block of RAM would be mapped into all eight of the logical blocks. As an example of the power and flexibility which this system of memory management offers, we will consider the logical address space arrangement used by Basic to manipulate super hi-res graphic screens. It is not possible to read data from or write data into the Color Computer 3ís memory unless the memory is in the logical address space. For example, if you wanted to read address $4F859, you would not be able to unless block 39 had been mapped into a logical block by an MMU register. Or, put another way, the value 39 must be in one of the MMU registers ($FFA0 - $FFA7). Basic allocates 32K of memory for its super hi-res graphics screen. In order to manipulate the screen, the 32K screen must be in the logical address space. The bottom 32K of memory in a 128K system ($60000 - $67FFF) is used for the super hi-res screen by Basic. In order to access the screen, this memory is mapped into logical block 1 as shown in Figure 2. Block numbers 48-51 are the super hi-res graphics screen. Block 56 must remain in logical block 0 because it contains all of Basicís system variables and interrupt vectors, and block 63 must remain in logical block 7 because it contains the Basic program code, which manipulates the super hi-res graphics screen. Block 53 is moved into logical block 6 (overlaying Disk Basic) and is used as the HPUT/HGET buffer.
Figure 2 - Super Hi-Res Graphics Memory Configuration There is one final aspect of the Color Computer 3ís memory management system, which must be addressed. The Color Computer 3 has two sets of MMU registers. The first set of eight registers located at $FFA0 should be very familiar to you by now. The second set of eight registers is located at $FFA8 and their function is identical to that of the first set in every aspect. Bit 0 of initialization register 1 ($FF91) is used to determine which one of the sets of registers is determining the makeup of the logical address space. If bit 0 if $FF91 is set to zero, then the eight MMU registers at $FFA0 (task register 0) control the makeup of the logical address space. If bit 0 of $FF91 is set, then the eight MMU registers at $FFA8 (task register 1) control the makeup of the logical address space (see Figure 3). The theory behind the two sets of registers is that each set of registers may be allowed to control a different task by allocating two independent segments of 64K to each task and then simply selecting the desired set of registers in order to enable the desired task. This will work fine but you must be careful to remember that switching between the task registers will do nothing to preserve the status of the CPU registers, nor will it protect you from disasters if you should be interrupted during the transition. Whenever new memory is switched into a logical address space, be sure it isnít where the program counter, stack, or interrupt service routine is located. Major problems may happen it is:
Figure 3 - MMU task registers Special notes: 1) All of the MMU registers may be read from as well as written to. However, only the lower 6 bits of data are accurate. The top two bits should be masked off after they are read. Also, in order to enable the MMU registers, bit 6 of $FF90 must be set. 2) The CoCo enable bit (bit 7, $FF90) does not have any effect upon the operation of the MMU registers. The MMU enable bit (bit 6, $FF90) must be set in order for the MMU registers to be operable. 3) The area from $FF00 - $FFFF is used for system input/output and is never affected by the MMU registers. The area from $FE00 - $FEFF is a special page (256 bytes) of RAM and may be affected by the MMU registers if MC3 (bit 3, $FF90) is clear. |


Objective of the game is to navigate the maze to its exit gate. Your current position will be highlighted as *. Use up, down, left, right keys to navigate the maze. You can change the configurations of the maze down below.


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Skills/Tools/Technologies
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jl777c
09-Oct-18 10:29 AM
and adding another delay to remove the utxo 1:1 requirement with the txfees on top, likely not good
except utxo can be for any amount
2
and barterDEX requires to swap a utxo for one coin for exactly one utxo of another coin
if this is too confusing, then you need to pay txfees to automatically consolidate utxo with the txfees, or do token trading
the assets CC DEX deals with balances


fd.h
GitHub: base/fd.h base/fd.cc
Top-level Functions
wrapfd()
namespace base { FD wrapfd(int fdnum); }
STABLE. Constructs a new
FDHolder
wrapped in a
std::shared_ptr
. This is the standard way of constructing
FDHolder
instances.
make_pipe()
namespace base { struct Pipe { FD read; FD write; }; Result make_pipe(Pipe* out); }
STABLE. Creates an anonymous unidirectional pipe. Data written to the
write
file descriptor will become available to the
read
file descriptor.
Each file descriptor will have the O_CLOEXEC
and
O_NONBLOCK
flags set.
See also:
pipe2(2)
.
make_socketpair()
namespace base { struct SocketPair { FD left; FD right; }; Result make_socketpair(SocketPair* out, int domain, int type, int protocol); }
STABLE. Creates an anonymous bidirectional socket pair. Data written to either file descriptor will become available to the other.
Each file descriptor will have the O_CLOEXEC
and
O_NONBLOCK
flags set.
See also:
socketpair(2)
.
set_blocking()
namespace base { Result set_blocking(FD fd, bool value); }
STABLE. Changes the O_NONBLOCK
flag: the flag is forced
to be set if value
is true, or forced to be cleared if
value
is false.
shutdown()
namespace base { Result shutdown(FD fd, int how); }
STABLE. Thin wrapper for
shutdown(2)
.
seek()
namespace base { Result seek(off_t* /*nullable*/ out, FD fd, off_t offset, int whence); }
STABLE. Thin wrapper for
lseek(2)
.
read_exactly()
namespace base { Result read_exactly(FD fd, void* ptr, std::size_t len, const char* what); }
RC. Wrapper for
read(2)
that returns an error if the read was short.
The what
argument names the FD in error messages.
write_exactly()
namespace base { Result write_exactly(FD fd, const void* ptr, std::size_t len, const char* what); }
RC. Wrapper for
write(2)
that returns an error if the write was short.
The what
argument names the FD in error messages.
make_tempfile()
namespace base { Result make_tempfile(std::string* path, FD* fd, const char* tmpl); }
RC. Wrapper for
mkostemp(3)
that takes a template relative to $TMPDIR
.
The file descriptor will have the O_CLOEXEC
flag
set.
make_tempdir()
namespace base { Result make_tempdir(std::string* path, const char* tmpl); }
RC. Wrapper for
mkdtemp(3)
that takes a template relative to $TMPDIR
.
FDHolder
namespace base { class FDHolder { public: using HookFn = std::function<void()>; explicit FDHolder(int fd) noexcept; ~FDHolder() noexcept; explicit operator bool() const noexcept; void on_close(HookFn hook); std::pair<int, RLock> acquire_fd() const noexcept; int release_fd() noexcept; Result close();FDHolder(const FDHolder&) = delete;FDHolder(FDHolder&&) = delete;FDHolder& operator=(const FDHolder&) = delete;FDHolder& operator=(FDHolder&&) = delete;}; using FD = std::shared_ptr<FDHolder>; }
RC. Owns a file descriptor, ensuring that it will be closed when the
last reference is removed. FDHolder
also ensures that the
file descriptor cannot be closed while in use, a property which protects
against race conditions caused by the recycling of file descriptor
numbers.
FDHolder::FDHolder()
Takes ownership of a file descriptor.
FDHolder::~FDHolder()
Closes the file descriptor, if not already closed.
FDHolder::operator bool()
Returns true iff the file descriptor is still open.
FDHolder::on_close()
Registers a callback that will be called when the file descriptor is closed.
FDHolder::acquire_fd()
Obtains a shared lock on the file descriptor, returning both the file
descriptor number and the shared lock. Returns -1
as the
file descriptor number if the file descriptor was already closed.
FDHolder::release_fd()
Relinquishes ownership of the file descriptor, returning the file
descriptor number. Returns -1
if the file descriptor was
already closed.
NOTE: this runs all on_close hooks, as if the file descriptor were being closed.
FDHolder::close()
Closes the file descriptor.
NOTE: this runs all on_close hooks.


Petaluma Spartan Marathon
Petaluma CA/USA
Race Winners
(25 runnings)
05 Apr
1959
3:04:45
20 Apr
1958
3:31:35
07 Apr
1957
3:07:17
08 Apr
1956
3:11:50
03 Apr
1955
2:53:25
04 Apr
1954
2:44:50
12 Apr
1953
3:37:45
06 Apr
1952
2:48:10
01 Apr
1951
2:59:00
02 Apr
1950
2:57:42
03 Apr
1949
2:58:45
04 Apr
1948
2:48:19
13 Apr
1947
3:27:45
24 Mar
1946
2:48:25
15 Apr
1945
3:11:04
23 Apr
1944
2:56:55
18 Apr
1943
2:47:20
19 Apr
1942
3:21:17
20 Apr
1941
3:50:15
14 Apr
1940
2:57:22
16 Apr
1939
2:52:00
24 Apr
1938
2:51:21
11 Apr
1937
2:55:31
19 Apr
1936
3:12:02
14 Apr
1935
3:23:21
Notes: 1935 was the inaugural year. In 1960, the marathon was replaced by a 25 km race.
Austin Pyles (CA/USA)
Jesse vanZant-5
Jesse vanZant-4
Jesse vanZant-3
Jesse vanZant-2
Aldo Scandurra (NY/USA)
Vic Duran (USA)
Joe Brooks (USA)
Chen-ling Wang-2
Fred Kline-2
Jesse vanZant (CAUSA)
Chen-ling Wang (HKG)
John Dicke (USA)
Fred Kline (USA)
Willie Dreyer-2
Willie Dreyer (CA/USA)
Leland Smith-5
Andy MacCono (CA/USA)
Neil Decker (USA)
Leland Smith-4
Clarence Hall (USA)
Leland Smith-3
Leland Smith-2
Andy Myrra (CA/FIN)
Leland Smith (USA)
Course Information
1935.... => Three loop course starting and finishing on the high school
track
1936-41 => Point-to-point course from Cunningham Station, southeast of Sebastopol, through Santa Rosa, and finishing
in Petaluma
1942-54 => Three loop course, starting and finishing at Kenilworth Park
1955-59 => Five loop course, starting and finishing at the Old Adobe on Washington St
Note: These results were preserved by Edward Fratini in the Petaluma
Argus-Courier and elsewhere.
Most Wins
(1935-1959)
Men
5
Leland Smith (USA)
1935,1937-38,1940,1943
.
Jesse vanZant (USA)
1949,1955-58
Last Updated on 23 Jan 2010
Contributors: Malcolm Heyworth, Jack Leydig (2)


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Idukki (ഇടുക്കി)is a district in the Indian state of Kerala.[1] It was constituted on 26 January 1972, by splitting the district of Kottayam into two parts. Its division was earlier headquartered at Kottayam city, but moved to Painavu in June 1976. Idukki district lies amid the Western Ghats of Kerala. Though it is regarded as the second-largest district in the region, it has the lowest population density among the other districts of Kerala,[2] the urban population being higher than the rural. Idukki is rich in forests and also known as the "Spice Garden of Kerala". Till 1998, when Kuttampuzha was added to Ernakulam district, Idukki was the largest district in Kerala.
Anamudi
Mattuppetty dam
Eravikulam National Park
Cheeyappara


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IFXPackWeights Class ReferenceUsed to match M x (vertex <-> N x pairs (bone, weight)).
More...
List of all members.
Detailed Description
Used to match M x (vertex <-> N x pairs (bone, weight)).
Constructor & Destructor Documentation
| IFXPackWeights::IFXPackWeights |
( |
void |
|
) |
[inline] |
|
| virtual IFXPackWeights::~IFXPackWeights |
( |
void |
|
) |
[inline, virtual] |
|
Member Function Documentation
| IFXRESULT IFXPackWeights::Allocate |
( |
U32 |
vertices, |
|
|
U32 |
weights |
|
) |
[inline] |
|
| void const* const IFXPackWeights::GetBufferAddr |
( |
void |
|
) |
const [inline] |
|
| U32 IFXPackWeights::GetNumberVerticesConst |
( |
void |
|
) |
const [inline] |
|
| U32 IFXPackWeights::GetNumberWeightsAllocated |
( |
void |
|
) |
const [inline] |
|
| U32 IFXPackWeights::GetReadOffset |
( |
void |
|
) |
const [inline] |
|
| IFXPackVertex const* IFXPackWeights::NextPackVertexForRead |
( |
void |
|
) |
[inline] |
|
| IFXPackVertex* IFXPackWeights::NextPackVertexForWrite |
( |
void |
|
) |
[inline] |
|
| void IFXPackWeights::RewindForRead |
( |
void |
|
) |
[inline] |
|
| void IFXPackWeights::RewindForWrite |
( |
void |
|
) |
[inline] |
|
| IFXRESULT IFXPackWeights::skipWeights |
( |
U32 const |
wCount |
) |
[inline] |
|
Member Data Documentation
|
|
Current read position marker (where to read ptr).
|
|
|
Current write position marker (were to write ptr).
|
|
|
Simple IFXPackVertex/IFXPackBoneWeight read order checking in m_pBuffer: should be true before NextPackVertexForRead.
|
|
|
Buffer size (*m_pBuffer).
|
|
|
Simple IFXPackVertex/IFXPackBoneWeight write order checking in m_pBuffer: should be true before NextPackVertexForWrite.
|
© 1999 - 2006 Intel Corporation. All rights reserved.
* Other names and brands may be claimed as the property of others.
|
|


SimpleXMLElement::addAttribute
(PHP 5 >= 5.1.3, PHP 7)
SimpleXMLElement::addAttribute — Adds an attribute to the SimpleXML element
说明
public void SimpleXMLElement::addAttribute ( string $name [, string $value [,
string $namespace ]] )
Adds an attribute to the SimpleXML element.
参数
name
The name of the attribute to add.
value
The value of the attribute.
namespace
If specified, the namespace to which the attribute belongs.
返回值
没有返回值。
范例
Note:
Listed examples may include example.php, which refers to the XML string
found in the first example of the basic usage guide.
Example #1 Add attributes and children to a SimpleXML element
addAttribute('type', 'documentary');
$movie = $sxe->addChild('movie');
$movie->addChild('title', 'PHP2: More Parser Stories');
$movie->addChild('plot', 'This is all about the people who make it work.');
$characters = $movie->addChild('characters');
$character = $characters->addChild('character');
$character->addChild('name', 'Mr. Parser');
$character->addChild('actor', 'John Doe');
$rating = $movie->addChild('rating', '5');
$rating->addAttribute('type', 'stars');
echo $sxe->asXML();
?>
以上例程的输出类似于：
PHP: Behind the Parser
Ms. Coder
Onlivia Actora
Mr. Coder
El ActÓr
So, this language. It's like, a programming language. Or is it a
scripting language? All is revealed in this thrilling horror spoof
of a documentary.
PHP solves all my web problems
7
5
PHP2: More Parser Stories
This is all about the people who make it work.
Mr. Parser
John Doe
5
参见
• SimpleXMLElement::addChild() - Adds a child element to the XML node
• Basic SimpleXML usage
User Contributed Notes 4 notes
===============================================================================
If the attribute already exists, addAttribute does nothing.
example:
-
XML;
$xml = simplexml_load_string($xml_string);
$xml->item->addAttribute('id', 'bar');
echo $xml->asXML();
?>
The above examples will output:
-
===============================================================================
If you need an Namespace, you must write a Prefix of the Namespace + the Name
of the Attribute ("prefix:name") as the first parameter AND the uri as the
third one. (I don't know why?!)
Example code:
");
$xml->addAttribute("xmi:type", "uml:Class", "http://schema.omg.org/spec/XMI/2.1
");
echo $xml->asXml();
?>
Output:
===============================================================================
You cannot use this to update an existing attribute's value.
Instead, get a DOM version of the SimpleXMLElement and use setAttribute, as
per:
$XML = 'Text';
$snode = new simple_xml_element($XML);
$dnode = dom_import_simplexml($snode);
$dnode->setAttribute('a', 'bb');
Resulting XML for the node is:
Text
===============================================================================
You can access a node child with his name this way :
nodeName->attributes;
// It works recursivly so this will work too
echo $root->nodeName->subNodeName->attributes();
?>
But if you want to ADD an attribute to a children you MUST use the children()
method to access and modfiy it or it will modify the parent's attributes.
nodeName->addChild('subNodeName', "whatever you want");
// Get the pos in the childrens of the parent node
$lastNodePos = $element->nodeName->count()-1;
// Get the parents node childrens
$nodeChildrens = $element->nodeName->children();
// Add an attribute to the last created
$nodeChildrens[$lastNodePos]->addAttribute('attributeName', "The attribute
value);
?>


Recipe 9 Working With Custom Delimited Format Files
9.1 Problem
You have a custom delimited file format that you want to be able to work with Drill and R.
9.2 Solution
Add a new entries to Drill storage workspaces
and formats
and use custom queries to have sane data types.
9.3 Discussion
A helpful chap—Ben Marwick—provided an example of a truly evil set of delimited files from the Wikimedia Commons that have pagecount data for all Wikimedia properties. The files are huge so we’ll be working with an extract. The link to the sample extract file will be posted soon, but it was created with:
$ bzcat pagecounts-2012-12-01.bz2 | head -1000024 > pagecounts-2012-02-01-excerpt.csvw
$ bzip2 --compress pagecounts-2012-02-01-excerpt.csvw
You’ll find out the reason for the csvw
in a bit.
The files all look like this:
# Wikimedia page request counts for 01/12/2012 (dd/mm/yyyy)
#
# Each line shows 'project page daily-total hourly-counts'
#
# Project is 'language-code project-code'
#
# Project-code is
#
# b:wikibooks,
# k:wiktionary,
# n:wikinews,
# q:wikiquote,
# s:wikisource,
# v:wikiversity,
# z:wikipedia (z added by merge script: wikipedia happens to be sorted last in dammit.lt files, but without suffix)
#
# Counts format: only hours with page view count > 0 (or data missing) are represented,
#
# Hour 0..23 shown as A..X (saves up to 22 bytes per line compared to comma separated values), followed by view count.
# If data are missing for some hour (file missing or corrupt) a question mark (?) is shown,
# and a adjusted daily total is extrapolated as follows: for each missing hour the total is incremented with hourly average
#
# Page titles are shown unmodified (preserves sort sequence)
#
Ar.mw Ar 5 M3R2
De.mw De 3 T3
En.mw En 3 E1F2
aa.b ?banner=B12_5C_113020_hover_nohover 11 A11
aa.b File:Broom_icon.svg 2 D1X1
aa.b File:Commons-logo.svg 1 X1
Just with another 65 million lines (or so) per file.
They come bzipped and Drill can definitely handle files with the bz2
extension, but we are going to rename these files to help ensure we recognize the delimited encoding type when we browse the file system and when constructing queries.
The comments in the data files are helpful since they tell us the format:
- comment character is
#
- space
' '
is the delimiter project
is reallylanguage-code
andproject-code
separated by a.
(which we’ll deal with here)- there’s a wonky bit of encoding in the
hourly-counts
(which we’ll deal with in another recipe)
We’re going to store all these pagecount files (we only have one due to size) in a ~/Data/wikimedia
directory so we can apply an input storage format directory-wide (this isn’t 100% necessary but an organized filesystem is a happy filesystem) and create a special storage format for these files.
You’ll need to go to http://localhost:8047/storage and “update” the dfs
storage plugin so we can add these new entries. While the editor has syntax checking, it is recommended that you either use a browser that lets you change the size of the input text area box or use an external text editor to do this work.
Find the line that has:
"workspaces": {
and add a new workspace, which is (for this filesystem example) just a dfs
shortcut name to a location on the filesystem:
"wikimedia": {
"location": "/Users/bob/Data/wikimedia",
"writable": true,
"defaultInputFormat": "wikicsv",
"allowAccessOutsideWorkspace": false
},
This is JSON so the ending ,
is necessary unless it’s the last entry in workspaces
. You’ll (again) need to change the specific path to the place where you’ve downloaded the file. We’ve taken a chance and made this directory writeable and told Drill that the default format will be “wikicsv
” files, which we’ll define next.
Now, find the line that starts with:
"formats": {
and add an entry for our new “wikicsv
” format.
"wikicsv": {
"type": "text",
"extensions": [
"csvw"
],
"delimiter": " "
},
The default comment character for delimited files is “#
” so there’s no need to save that.
Save the configuration update and head over to http://localhost:8047/query (or use drill-conf
on the command-line) to test out the new setup.
The example pagecount file is named pagecounts-2012-02-01-excerpt.csvw.bz2
which lets Drill know it’s a wikimedia
delimited file and also that it’s bzip compressed.
Let’s try a query:
0: jdbc:drill:> SELECT * FROM dfs.wikimedia.`/*.csvw.bz2` LIMIT 10;
+------------------------------------------------------------+
| columns |
+------------------------------------------------------------+
| ["Ar.mw","Ar","5","M3R2"] |
| ["De.mw","De","3","T3"] |
| ["En.mw","En","3","E1F2"] |
| ["aa.b","?banner=B12_5C_113020_hover_nohover","11","A11"] |
| ["aa.b","File:Broom_icon.svg","2","D1X1"] |
| ["aa.b","File:Commons-logo.svg","1","X1"] |
| ["aa.b","File:Incubator-notext.svg","5","C1G1V1X2"] |
| ["aa.b","File:Wikibooks-logo.svg","1","X1"] |
| ["aa.b","File:Wikimania.svg","1","X1"] |
| ["aa.b","File:Wikimedia-logo.svg","1","X1"] |
+------------------------------------------------------------+
10 rows selected (0.268 seconds)
While it’s not exactly what we want, the good news is that the headers were skipped and the file decompressed perfectly. However, we’ll need to use columns[#]
to help get to the data in each column. Let’s try that again:
0: jdbc:drill:> SELECT columns[0], columns[1], columns[2], columns[3] FROM dfs.wikimedia.`/*.csvw.bz2` LIMIT 10;
+---------+--------------------------------------+---------+-----------+
| EXPR$0 | EXPR$1 | EXPR$2 | EXPR$3 |
+---------+--------------------------------------+---------+-----------+
| Ar.mw | Ar | 5 | M3R2 |
| De.mw | De | 3 | T3 |
| En.mw | En | 3 | E1F2 |
| aa.b | ?banner=B12_5C_113020_hover_nohover | 11 | A11 |
| aa.b | File:Broom_icon.svg | 2 | D1X1 |
| aa.b | File:Commons-logo.svg | 1 | X1 |
| aa.b | File:Incubator-notext.svg | 5 | C1G1V1X2 |
| aa.b | File:Wikibooks-logo.svg | 1 | X1 |
| aa.b | File:Wikimania.svg | 1 | X1 |
| aa.b | File:Wikimedia-logo.svg | 1 | X1 |
+---------+--------------------------------------+---------+-----------+
10 rows selected (0.18 seconds)
Better! However, those computed column names will have to go and we also need to do something about the first column since it’s really two columns compressed together. Renaming is straightforward (the sqlline
prefixes will be dropped from now on to make it easier to copy/past the SQL queries; just assume it’s being used in a Drill web query box or sqlline
prompt):
SELECT
columns[0] AS project,
columns[1] AS page,
CAST(columns[2] AS DOUBLE) AS daily_total,
columns[3] AS hr_ct
FROM dfs.wikimedia.`/*.csvw.bz2` LIMIT 10
+----------+--------------------------------------+--------------+-----------+
| project | page | daily_total | hr_ct |
+----------+--------------------------------------+--------------+-----------+
| Ar.mw | Ar | 5.0 | M3R2 |
| De.mw | De | 3.0 | T3 |
| En.mw | En | 3.0 | E1F2 |
| aa.b | ?banner=B12_5C_113020_hover_nohover | 11.0 | A11 |
| aa.b | File:Broom_icon.svg | 2.0 | D1X1 |
| aa.b | File:Commons-logo.svg | 1.0 | X1 |
| aa.b | File:Incubator-notext.svg | 5.0 | C1G1V1X2 |
| aa.b | File:Wikibooks-logo.svg | 1.0 | X1 |
| aa.b | File:Wikimania.svg | 1.0 | X1 |
| aa.b | File:Wikimedia-logo.svg | 1.0 | X1 |
+----------+--------------------------------------+--------------+-----------+
10 rows selected (1.039 seconds)
Along with having better column names we also took the opportunity to ensure daily_total
is a numeric type vs a character. The hr_ct
column conversion will be covered in another recipe (we’ll need to make a Drill User Defined Function [UDF] for it) but we can handle separating project
out here:
SELECT
SUBSTR(columns[0], 1, STRPOS(columns[0], '.')-1) AS language_code,
SUBSTR(columns[0], STRPOS(columns[0], '.')+1) AS project_code,
columns[1] AS page,
CAST(columns[2] AS DOUBLE) AS daily_total,
columns[3] AS hr_ct
FROM dfs.wikimedia.`/*.csvw.bz2` LIMIT 10
+----------------+---------------+--------------------------------------+--------------+-----------+
| language_code | project_code | page | daily_total | hr_ct |
+----------------+---------------+--------------------------------------+--------------+-----------+
| Ar | mw | Ar | 5.0 | M3R2 |
| De | mw | De | 3.0 | T3 |
| En | mw | En | 3.0 | E1F2 |
| aa | b | ?banner=B12_5C_113020_hover_nohover | 11.0 | A11 |
| aa | b | File:Broom_icon.svg | 2.0 | D1X1 |
| aa | b | File:Commons-logo.svg | 1.0 | X1 |
| aa | b | File:Incubator-notext.svg | 5.0 | C1G1V1X2 |
| aa | b | File:Wikibooks-logo.svg | 1.0 | X1 |
| aa | b | File:Wikimania.svg | 1.0 | X1 |
| aa | b | File:Wikimedia-logo.svg | 1.0 | X1 |
+----------------+---------------+--------------------------------------+--------------+-----------+
10 rows selected (0.188 seconds)
Now, we can try that from R with sergeant
:
library(sergeant)
library(tidyverse)
db <- src_drill("localhost")
# remember we need to wrap this custom query in `()`
tbl(db, "(
SELECT
SUBSTR(columns[0], 1, STRPOS(columns[0], '.')-1) AS language_code,
SUBSTR(columns[0], STRPOS(columns[0], '.')+1) AS project_code,
columns[1] AS page,
CAST(columns[2] AS DOUBLE) AS daily_total,
columns[3] AS hr_ct
FROM dfs.wikimedia.`/*.csvw.bz2`
)") -> pagecount
pagecount
## # Source: table<( SELECT SUBSTR(columns[0], 1, STRPOS(columns[0],
## # '.')-1) AS language_code, SUBSTR(columns[0], STRPOS(columns[0],
## # '.')+1) AS project_code, columns[1] AS page, CAST(columns[2] AS
## # DOUBLE) AS daily_total, columns[3] AS hr_ct FROM
## # dfs.wikimedia.`/*.csvw.bz2` )> [?? x 5]
## # Database: DrillConnection
## language_code daily_total hr_ct project_code page
## <chr> <dbl> <chr> <chr> <chr>
## 1 Ar 5.00 M3R2 mw Ar
## 2 De 3.00 T3 mw De
## 3 En 3.00 E1F2 mw En
## 4 aa 11.0 A11 b ?banner=B12_5C_113020_…
## 5 aa 2.00 D1X1 b File:Broom_icon.svg
## 6 aa 1.00 X1 b File:Commons-logo.svg
## 7 aa 5.00 C1G1V1X2 b File:Incubator-notext.…
## 8 aa 1.00 X1 b File:Wikibooks-logo.svg
## 9 aa 1.00 X1 b File:Wikimania.svg
## 10 aa 1.00 X1 b File:Wikimedia-logo.svg
## # ... with more rows
## # A tibble: 23 x 2
## language_code n
## * <chr> <int>
## 1 ar 576618
## 2 az 88845
## 3 af 67132
## 4 an 46220
## 5 als 28824
## 6 ast 27216
## 7 arz 25133
## 8 am 20915
## 9 bar 19659
## 10 ba 18648
## 11 ang 16531
## 12 as 14390
## 13 bat-smg 11806
## 14 arc 9524
## 15 ace 9301
## 16 av 7092
## 17 ab 6177
## 18 ay 3720
## 19 ak 1522
## 20 aa 724
## 21 En 1
## 22 De 1
## 23 Ar 1
As noted, converting the hr_ct
column is complex enough that it needs its own recipe. And, take note of Recipe TBD
that shows how to convert these delimited files into parquet files which can really speed up processing and reduce memory requirements.
NOTE: These Wikimedia Commons pagecount files would work best converted to parquet files and stored in in a small Drill cluster but they can be handled on a single-node system with the right configuration.


The fiximports command fixes import declarations to use the canonical import path for packages that have an "import comment" as defined by https://golang.org/s/go14customimport.
The Go 1 custom import path mechanism lets the maintainer of a package give it a stable name by which clients may import and "go get" it, independent of the underlying version control system (such as Git) or server (such as github.com) that hosts it. Requests for the custom name are redirected to the underlying name. This allows packages to be migrated from one underlying server or system to another without breaking existing clients.
Because this redirect mechanism creates aliases for existing packages, it's possible for a single program to import the same package by its canonical name and by an alias. The resulting executable will contain two copies of the package, which is wasteful at best and incorrect at worst.
To avoid this, "go build" reports an error if it encounters a special comment like the one below, and if the import path in the comment does not match the path of the enclosing package relative to GOPATH/src:
$ grep ^package $GOPATH/src/github.com/bob/vanity/foo/foo.go package foo // import "vanity.com/foo"
The error from "go build" indicates that the package canonically known as "vanity.com/foo" is locally installed under the non-canonical name "github.com/bob/vanity/foo".
When a package that you depend on introduces a custom import comment, and your workspace imports it by the non-canonical name, your build will stop working as soon as you update your copy of that package using "go get -u".
The purpose of the fiximports tool is to fix up all imports of the non-canonical path within a Go workspace, replacing them with imports of the canonical path. Following a run of fiximports, the workspace will no longer depend on the non-canonical copy of the package, so it should be safe to delete. It may be necessary to run "go get -u" again to ensure that the package is locally installed under its canonical path, if it was not already.
The fiximports tool operates locally; it does not make HTTP requests and does not discover new custom import comments. It only operates on non-canonical packages present in your workspace.
The -baddomains flag is a list of domain names that should always be considered non-canonical. You can use this if you wish to make sure that you no longer have any dependencies on packages from that domain, even those that do not yet provide a canonical import path comment. For example, the default value of -baddomains includes the moribund code hosting site code.google.com, so fiximports will report an error for each import of a package from this domain remaining after canonicalization.
To see the changes fiximports would make without applying them, use the -n flag.


Revision History¶
For the latest documentation, please refer to: http://compressonator.readthedocs.io/en/latest/
V4.2¶
July 2021
Features
BC1 Quality Improvements
- Added new refine steps to improve quality of images with mixed low and high-frequency content.
- Boosted encoding performance by 2x with improved quality for smooth texture-mapped surfaces.
BC7 HLSL Improvements
- Bug fixes and improved overall quality of the shader.
GUI Update
- Added “Refine Steps” settings for BC1 image processing
- Removed “Use Alpha” and “No Alpha” setting for BC1, Just set a threshold above 0 to enable BC1 punch through ranges
SDK Updates
- Removed framework.h file, replaced with compressonator.h
- Added new kernel setting options for BCn codecs in CMP_Framework
- New single header shader files added for CPU-GPU common API’s and type definitions
- Added FidelityFX types to common_defs.h to support programming FidelityFX shaders with CMP type definitions
- Improved CompressonatorLib BC1 performance and quality
CMake Build Updates
- Added options to select build of external libs, SDK libs and applications
- Build updated for CLI on Mac OS
- OpenCV 4 supported
- Improved compiler standard revision detection and extensions
- Visual Studio 2019 support
- Qt 5.15 support
Known issues and limitations
- BC1 set to high-quality settings or with refinement steps take longer time to process than prior versions, adjust quality-settings lower if better performance is required
- Fixed quality issues for BC7 HLSL for images with alpha content, the processing time is longer than the previous release
- Global Setting of Refine Steps is only valid for BC1, it will not work for any other format settings.
V4.1¶
November 2020
Features
SNORM Support
GPU Encoding
Mip Map Generation
Image View
Test Analysis
-
A KTX version 2 plugin has been added to the SDK, that supports saving and loading multichannel images, BCn, ETCn, and ASTC codecs.
Known issues and limitations
- When using GPU encoding, all source image width and height must be divisible by 4.
- GPU HW based encoding feature is only available on the Windows platform. Encoding is set only for BCn codecs and quality is limited when compared to CPU encoding.
- BC6H is not supported with GPU HW based encoding.
- KTX2 file formats for ATIn and DXT5 swizzled formats are not supported.
- ATI1n, ATI2n processed images save as BC4 and BC5 formats.
- Transcoding to ARGB_16F, ARGB_32F, and ARGB_8888 image formats is supported, all other channel formats have various data issues and have been removed until a fix is available.
- Viewing glTF and OBJ models using Vulkan(TM) rendering shows blank views.
- PSNR and Image diff analysis for mismatched channel source and destination types (F16, F32, HalfFloat, and 8bit) needs improvement.
- BC6H for OpenCL is not available in this release.
- If user-requested MIP Map level generation for GPU texture sizes in the GUI and CLI applications are invalid, they will automatically be adjusted to the lowest settable limits.
- Limited CubeMap support.
V4.0¶
May 2020
Features
-
Supports GPU based encoding with OpenCL and DX11
-
(Beta Feature) Displays performance data for GPU and CPU based BC1 to BC7 encoders
-
The “process_results.txt” logging includes GPU performance analysis data. csv file format is also available.
-
Quality settings are available for BC1, BC2 and BC3 encoders.
Setting Global Quality Settings
Users can override all individual destination compression settings, using a globally set value before processing.
-
Compressonator SDK performs auto conversions of FP16 to byte and byte to FP16 formats when encoding textures with GPU or CPU encoders, a pre-conversion of the source data is performed, into a temporary buffer which is then sent for processing, once the processing is completed the buffer is removed.
Known issues and limitations
- GPU based encoding feature is only available on the Windows platform.
- When using GPU Encoding, all source image width and height must be divisible by 4.
- BC1, BC2 and BC3 DXC Performance is slow for quality setting > 0.6
- CMP_Core for BC1,BC2,BC3,BC4,BC5 is fully functional on both OpenCL and DX11.
- CMP_Core BC7 has limited support on OpenCL, in a few cases encoding images causes GPU and CLI application to become unresponsive.
- CMP_Core BC6 for OpenCL is not completed.
- BC6 & BC7 on DX11 uses DirectX Tex shaders, CMP_Core version will be available soon.
- GPU shaders for OpenCL and DX11 are compiled at runtime when encoding a texture for the first time, all subsequent runs use compiled shaders.
- KPerf(ms) and MTx/s are not measured for Compressonator SDK CPU encoding, only measured for CMP_Core SDK HPC-CPU and GPU encoding.
- KPerf(ms) and MTx/s measurements do not match across DXC and OCL pipelines.
- If user-requested MIP Map level generation for GPU texture sizes in the GUI and CLI applications are invalid, they will automatically be adjusted to the lowest settable limits.
- See v3.2 list for additional issues and limitations.
V3.2¶
December 2019
Features
-
Several new libraries are now provided with the SDK.
Compressonator Core Provides block level API access to updated performance and quality driven BCn codecs.
Compressonator Framework Includes Compressonator core with interfaces for multi-threading, mipmap generation, file access of images and HPC pipeline interfaces. (SPMD & GPU support is not enabled in this release)
Compressonator SDK Has been updated to support Cube Maps, MIP Map generation. External link requirement for Open EXR has been removed.
-
This release previews cube map support for images that are limited to RGBA_8888 format and RGBA_F16. Support for other formats will be provided in the next major update.
-
A analysis table view and results output are provided for users to view test analysis results for Performance, PSNR and SSIM analysis during and after processing of image textures.
Known issues and limitations
- HPC BC7 codec on Linux platforms shows block artifacts.
- HDR Cube maps (Format ARGB_16F) files have issues in the GUI view, only the first frame and MIP Level is displayed.
- Cube map only supports a limited set of texture types (RGBA_8888 and RGBA_F16), additional format will be added in future release.
- Cube maps with .KTX as destination format is not supported.
- When transcoding signed floats with BC6H HPC on unsigned RGBA_8888 data the images will appear distorted.
- CreateCodecBuffer (nCodecBufferType) case needs to create new codec buffers for CBT_RGBA8888, CBT_BGRA8888 and CBT_ARGB8888. The fix has been patched in this release.
- In GUI, ATI2N decode with CPU is swizzled. Decode views with GPU_OpenGL, GPU_DirectX and GPU_Vulkan are correct.
- MSE calculations are based on RGB channels only, alpha channel is not included. New MSE calculations based on MipSet data format for RGBA channels will be used in next release.
Notes
- BC5 codec uses ATI2N_XY (Red & Green) channel format if you prefer Green & Red for BC5 please use ATI2N format for encoding.
- In GUI, BC4 decode views using CPU is gray scaled based on Red channel. Next release will only use Red channel views to match GPU views.
V3.1¶
November 2018
Features
Fresh New Installers:
When installing to Windows with V3.1 release, you will notice that there are several separate new installers: SDK, GUI and CLI, which when all used result in the following file structure under \Program Files\Compressonator 3.1
The bin and license folders are created when the user installed GUI or CLI. When the SDK is installed, an examples folder is created which contains sample application source code demonstrating the use of the Compressonator SDK. These samples use the header files from the include folder and require linking with the prebuilt sample Compressonator library provided in the lib folder. Users can also build the Compressonator library using the source code from GPUOpen. Each of these installs will not remove prior v3.0 or older installations. The user should uninstall manually using the control panel “add remove programs”.
Texture Compression
BC6H: The quality of images varies slightly when processed with a CPU based encoder and decompressed by GPU compared to decompression by CPU, especially when generating MIP map levels with progressively lower resolution images. Our latest release compensates for these differences to reduce the errors that causes blocking artifacts and luminance changes.
ETC2_RGBA and ETC2_RGBA1 is added to Compressonator SDK, that controls the degree of transparency of images for ETC2 blocks.
CLI Options
Process Source and Destination Folders:
The new CLI adds support for processing image files from a folder, without the need to specify a file name. Using a file filter, specific files types can also be selected for compression as needed.
CLI will generate an output “process_results.txt” when -log is added to the compression command line options, users can change the default log file using the command -logfile, the log captures details of the source and destination files along with statistical data on performance and quality.
3D Model
Model Mesh Compression: Additional support for gltf 2.0 compression extensions (KHR_draco_mesh_compression) is added to CLI and GUI
Selectable 3D Model Viewers: Support for the Vulkan Viewer code introduced in 3.0 can now be set in GUI application settings, this is an alpha version and not expected to work for all glTF models, feature for this viewer compared to DX12 has been limited.
3D Model Image Diff Viewer, Auto and Manual View: This feature allows the user to select a manual override of the automated difference view of two rendered models. The Auto View switches render frames at a predetermined rate after two render cycles of each model view, the Manual View allows the users to manually switch view using the keyboards space bar.
Image Viewer.
Save View as: Users can capture viewed images to file using context menu “Save View as” to either DDS, BMP or EXR files
Save Block as: Users can now save any block to file using “Save Source Block … as” where … is the current cursor location translated to a block position.
Copy to Windows Clipboard: Users can capture images to Windows Clipboard, using keyboard keys Ctrl C (captures displayed image), Alt C (captures original source image).
Known issues and limitations
- After uninstalling the SDK or CLI, Windows short cuts for the tools folder references are not removed. When selecting them in the start menu Windows will prompt for removal.
- Vulkan Model Viewer, the code is a preview alpha version, it may cause GUI instability with various models!
V3.0¶
April 2018
V3.0 release will expand Compressonator assets processing from 2D to 3D. Please refer to Getting Started document (Section “Getting Started on 3D Mesh Processing”) if you wish to have a quick start on V3.0.
Features
- Optimize mesh (.obj model and .bin file from .glTF model) using vertex cache optimization, overdraw reduction and mesh simplification using level of details.
- Analyzing Mesh : Provide ACMR (Average Cache Miss Ratio) and ATVR (Average Transformed Vertices Ratio) statistic from mesh optimization to analyze mesh optimization only.
Compress mesh (support only .obj model) using Draco library.
Original Image View and Processed Image View (Compressed Image View or Pixels Difference Image View) can be switched with simple key stokes (O or P)
Known issues and limitations
- “Mesh optimization only support glTF and obj file format while mesh compression only support obj file format.
- Embedded gltf is not supported for now. Only gltf with external .bin mesh file is supported.
- .obj file texture load (with an external mtl file) and view is not supported.
- “AutoOpt” in the mesh optimization setting may not produce the best result, it is just a default setting which includes vertex cache optimization with cache size of 16, overdraw optimization with ACMR threshold 1.05 and vertex fetch optimization. The mesh optimization setting is model-dependent and depend on actual hardware. If result is not optimized, users are advised to use “UserOpt” setting and refer to Mesh Optimizer Settings for “UserOpt” selection to set each value manually or check/uncheck certain optimization.
- Mesh Optimization with all selected Mesh Optimizer Settings will need to work with mesh analyzing with the values set to match the hardware to get the optimum result.
- KTX 3 color channels multiple mip level may result in GUI crash and will be fix in next release.
V2.7¶
October 2017
Features
- Linux and Mac support- build with cmake and shell script
- Preview of 3D model viewer and asset compression
- Compress texture images within the glTF file.
- View 3D Models with DX12 using glTF v2.0 file format https://www.khronos.org/gltf
- Compare compressed model textures with original
Known issues and limitations
- “Drag and drop” does not work due to User Interface Privilege Isolation technology which forbid dragging from non-admin to admin, please relaunch the app without admin again if drag and drop does not work.
- glTF viewer is pre-mature and requires DX12 feature level 12, support only Win10 RS2 or later, also Window SDK 10.0.15063.0 is recommended for best functionality of the viewer.
- Decompress view with Vulkan only support up to driver version 1.5.0. Stay tune for update to support the latest driver.
- Some glTF view might appear zoom in or out. Please use the mouse wheel to zoom in/out for better view.
V2.5¶
October 2017
Features
- GUI updates includes
- Added support for HDR image view, a HDR properties window has been added to allow user adjust Exposure, Defog, Knee Low and Knee-High values.
- Added support for channel weight setting in destination setting window for compression codecs.
- Added support for alpha setting in destination setting window for BC1.
- Added option to select image view with GPU or CPU (decompress with GPU or CPU).
- GUI “Process” icon behavior has been changed for the convenience of
the users:
- “Process” icon has been enabled all the time even when users do not add any compression setting to the original images.
- Allow user to drag and drop multiple images and click “Process” right away, in which GUI will set the compression setting chosen by the users to all original images.
- Codecs updates includes
- ASTC
- ETC2
- Improved BC6H Compression quality
V2.4¶
December 2016
Features
- Improved performance of ASTC compression
- Performance adjusted according to quality settings
- Fast multi-threaded implementation Example: Boat.png sample image with Quality = 0.05 and BitRate = 8.0 over 40% faster for single threaded compression compare with v2.3 35x faster for multi threaded (8 threads on a 8 Core CPU) compression
- Support MipMap generation in KTX files
- Added TGA image plugin
- Added Vulkan GPU based decompression and viewing of compressed image
- 64-bit support added to Command Line and GUI applications
Known issues and limitations
- MipMap views is not supported in GPU based decompression
Bug Fixes and Changes
- GUI application no longer requires GPUOpen CodeXL components
- Replaced Progress Bar
- Replaced About Box
- Replaced Welcome Page
- Removed Crash Reports
- To build GUI and CLI applications from source, it is required to install Qt v5.7 first (Qt v5.5 in common folder is no longer required)
- The path setting for 32 and 64 bit Qt files is set in a shared VisualStudio project file Compressonator_RootDev.proj
- Fixed the problem of corrupted BlockRate values in GUI when loading project files and processing
- Fixed the corrupted image block problem when “BlockRate” width is not equal to height during ASTC CPU based decompression
- Added check on valid ASTC user input block size (WxH) parameter
- Fixed ATC_RGB channel swizzle
- Fixed missing decompressed image output to TGA file (replaced Qt plugins with Compressonator’s own TGA plugin)
V2.3¶
July 2016
Features
- Compatible with OpenGL’s GL_COMPRESSED_RGB8_ETC2 API
ASTC compression & decompression of various block sizes from 4x4 to 12x12
- Supported through OpenGL APIs
- Requires GPU HW supports ASTC format
Selectable GPU or CPU based compressed image views
- GPU rendering based on OpenGL or DirectX
- Enabled in Compression setting


--- layout: post title: fashion's night out! date: 2011-09-09 17:36:53.000000000 -04:00 type: post published: true status: publish categories: - style tags: - daily outfit - fashion's night out - nyc meta: _wp_old_slug: '938' _edit_last: '1' author: login: sophie email<EMAIL_ADDRESS>display_name: Pika first_name: '' last_name: '' ---
Last night was my first time going to Fashion's Night Out, and it was so much fun! I felt like a real New Yorker, weaving in and out of stores in Soho. Saw a few models, the Kardashians, and even walked past Anna Wintour. (Anna's daughter: "Mommmmm, it's not even raining anymore, do you really need the umbrella?!" Anna: keeps walking.) So for Fashion Friday this week, here's my outfit from last night, guest-starring my fashionable friend Jiin, who also kindly gave me the top I'm wearing!
Jiin is actually wearing a fascinator, just like Kate Middleton! It's hard to see in the first picture, so here's another:
Isn't she fabulous?


Navi Navigation
The Navi villages on Pandora are part of gigantic hometrees. Hometrees specialize in producing different types of fruits that Navi like to eat. Neytiri’s mother Mo’at asks her to calculate the shortest path between two given hometrees that allows Mo’at to collect every different type of fruit exactly once. Your goal is to help Neytiri calculate these paths. Warning: since there are many hometrees on Pandora, you will not be able to simply examine all possible paths and select the least expensive.
Paths between hometrees are described beginning with the line “GRAPH BEGIN”. Additional lines lists individual hometrees (nodes), the type of fruit produced by the hometree, the distance to the neighboring hometrees, followed (on the same line) by their neighboring hometrees (edges). The line “GRAPH END” ends the list of connection descriptions. The next lines describe pairs of hometrees for which answers need to be calculated, each on a single line. Following these lines, a completely new instance of the problem can be given, starting from scratch.
You may assume any hometree can reach any other hometree by some path. Each hometree will be listed at least once as the first item on some line between the GRAPH BEGIN and GRAPH END. The same hometree can be listed more than once with different distance values, but it must always have the same type of fruit assigned to it. Individual connections can appear at most once. It is valid to list only a hometree and its color (specifying no new connections).
Fruit names will be integers. Not all integers have to be used, however. Your path need only try to collect fruits that at least one tree grows.
Paths between hometrees are described beginning with the line “GRAPH BEGIN”. Additional lines lists individual hometrees (nodes), the type of fruit produced by the hometree, the distance to the neighboring hometrees, followed (on the same line) by their neighboring hometrees (edges). The line “GRAPH END” ends the list of connection descriptions. The next lines describe pairs of hometrees for which answers need to be calculated, each on a single line. Following these lines, a completely new instance of the problem can be given, starting from scratch.
You may assume any hometree can reach any other hometree by some path. Each hometree will be listed at least once as the first item on some line between the GRAPH BEGIN and GRAPH END. The same hometree can be listed more than once with different distance values, but it must always have the same type of fruit assigned to it. Individual connections can appear at most once. It is valid to list only a hometree and its color (specifying no new connections).
Fruit names will be integers. Not all integers have to be used, however. Your path need only try to collect fruits that at least one tree grows.

它的脚为什么一只是蹄子，另一只是爪子？
它的脚为什么一只是蹄子，另一只是爪子？
它的脚为什么一只是蹄子，另一只是爪子？
它的脚为什么一只是蹄子，另一只是爪子？
它的脚为什么一只是蹄子，另一只是爪子？
它的脚为什么一只是蹄子，另一只是爪子？
它的脚为什么一只是蹄子，另一只是爪子？
它的脚为什么一只是蹄子，另一只是爪子？
没错的，九度OJ也有此题
可以参考算法导论中的时间戳。就是结束访问时间，最后结束的顶点肯定是入度为0的顶点，因为DFS要回溯
感觉我好像很多都不会做。。。。
整理的很好，学习了
感谢分享 学习了`(*∩_∩*)′
厉害啊，我遇见数学问题就头疼！
不对吧 你算的an是前面说有的项的和
A猴子认识的所有猴子和B猴子认识的所有猴子都能认识，这句话用《爱屋及乌》描述比较容易理解……
题目需要求解的是最小值，而且没有考虑可能存在环，比如
0 0 0 0 0
1 1 1 1 0
1 0 0 0 0
1 0 1 0 1
1 0 0 0 0
会陷入死循环
还真是，i7的cpu跑了3秒
刚开始学，非常好
为什么for循环找到的i一定是素数叻，而且约数定理说的是n=p1^a1*p2^a2*p3^a3*…*pk^ak，而你每次取余都用的是原来的m，也就是n
楼主放题时候没注意下？xxx定律见：
hdoj3782：http://acm.hdu.edu.cn/showproblem.php?pid=3782
很棒的网站，加油！⛽


Wireshark Lab
Wireshark Lab
Wireshark is a packet sniffer, this means that it is a application that sits and captures packets as they come into the computer.For all labs followed the PDF protocol. For some used own generated captures (1,2,4) along with provided captures, for others used only provided captures.
Accessing Wireshark
- su compsci
- sudo su
- wireshark
- Double click on desired interface when started
Lab 1: Intro
General overview of how to open and use wireshark. Wireshark is a packet sniffer application, it captures packets that the host computer either transmits or receives. It displays them in an easy to view format with a list of packets at the top in the packet-listing window, along with their name, type, source, and destination. Then there is the packet-header details window that contains information on header fields and data. Including size and contents. Finally there is the packet-contents window that displays the raw data of the packet in both hexadecimal and ASCII code. Wireshark can also be filtered using the bar at the top. Entries into the filter bar should be lowercase.
Structure of Wireshark
Lab 2: HTTP
Used both provided wireshark files, as well as generated my own. Mainly examined the header properties of HTTP packets that were captured. Notes: Your host computer sends a GET message to the destination address to request the information. The destination host should reply with the requested information.HTTP messages are often carried inside multiple TCP messages.Browsers often cache requested objects, so the catche must often be cleared to resend/receive packets.Long/large documents are submitted over several packets that are received and reassembledUsernames and passwords are encoded in Base64 when transmitted so that they are more secure, they are not encrypted.
- Is your browser running HTTP version 1.0 or 1.1? What version of HTTP is the server running?
- What languages (if any) does your browser indicate that it can accept to the server?
- Accepts languages english-US, english
- What is the IP address of your computer? Of the gaia.cs.umass.edu server?
- Source IP: <IP_ADDRESS> (my computer). Destination IP: <IP_ADDRESS> (gaia.cs.umass.edu)
- What is the status code returned from the server to your browser?
- When was the HTML file that you are retrieving last modified at the server?
- Last modified: Mon. Oct. 10th 2016
- How many bytes of content are being returned to your browser?
- By inspecting the raw data in the packet content window, do you see any headers within the data that are not displayed in the packet-listing window? If so, name one.
- Congradulations you've downloaded the file
- Inspect the contents of the first HTTP GET request from your browser to the server. Do you see an "IF-MODIFIED-SINCE" line in the HTTP GET?
- Inspect the contents of the server response. Did the server explicitly return the contents of the file? How can you tell?
- Yes, under the ASCII text
- Now inspect the contents of the second HTTP GET request from your browser to the server. Do you see an "IF-MODIFIED-SINCE:" line in the HTTP GET? If so, what information follows the "IF-MODIFIED-SINCE:" header?
- Yes, if-modified since: Mon, 10 Oct 2016 5:59:01 GMT
- What is the HTTP status code and phrase returned from the server in response to this second HTTP GET? Did the server explicitly return the contents of the file? Explain.
- Status code: 304, it did not.
- . How many HTTP GET request messages did your browser send? Which packet number in the trace contains the GET message for the Bill of Rights?
- There were two GET messages. The first one requests the bill of rights.
- Which packet number in the trace contains the status code and phrase associated with the response to the HTTP GET request?
- Packet 30 (self taken) has the status code. It returns a 200 OK message. Packet 33 returns a 404 Page not found error.
- What is the status code and phrase in the response?
- The status code is 200 OK.
- How many data-containing TCP segments were needed to carry the single HTTP response and the text of the Bill of Rights?
- There are 2 reassembled TCP Segments. Listed in the packet-header window.
- How many HTTP GET request messages did your browser send? To which Internet addresses were these GET requests sent?
- It sent 4 GET request messages. It sent them to <IP_ADDRESS>, <IP_ADDRESS>, <IP_ADDRESS>, and <IP_ADDRESS> respectivly. The third GET request gave a 302 Found error, because the image had been moved. That is why there are four requests instead of three.
- Can you tell whether your browser downloaded the two images serially, or whether they were downloaded from the two web sites in parallel? Explain.
- The images had been downloaded serially. This can be observed just by looking at the time the GET messages were sent. They were sent one after the other, rather than at the same time.
- What is the server's response (status code and phrase) in response to the initial HTTP GET message from your browser?
- The server's initial response is a 401 Unauthorized message.
- When your browser's sends the HTTP GET message for the second time, what new field is included in the HTTP GET message?
- Authorization: Basic field. The contents of which are the Credentials which holds the username and password separated by a colon.
Lab 3: DNS (Incomplete)
This lab was incomplete due to a couple reasons. One whenever I tried to run a DNS lookup through another webserver then I would get a timeout error. Second I could not find a DNS cache clear command that worked on the unix machines in the lab, the few commands that I did find didn't run.
Thus I instead read though the lab to get the general idea, but did not finish any questions beyond number 3.
- Run nslookup to obtain the IP address of a Web server in Asia. What is the IP address of that server?
- nslookup www.asdu.ait.ac.th www.asdu.ait.ac.th canonical name = www.misu.ait.ac.th name: www.misu.ait.ac.th address: <IP_ADDRESS>
- Run nslookup to determine the authoritative DNS servers for a university in Europe.
- nslookup -type=NS www.ucs.cam.ac.uk www.ucs.cam.ac.uk canonical name = cs.falcon.csx.cam.ac.uk address: <IP_ADDRESS>
- Run nslookup so that one of the DNS servers obtained in Question 2 is queried for the mail servers for Yahoo! mail. What is its IP address?
- nslookup www.usc.cam.ac.uk pop.mail.yahoo.com CONNECTION TIMED OUT
Lab 4: TCP (Incomplete)
No such thing as HTTP continuation, it indicates multiple TCP segments that hold a single HTTP message.
Had difficulty with question 7, the question was confusing and asked for several sequence numbers that were listed as redundant by wireshark in the provided file.
- What is the IP address and TCP port number used by the client computer (source) that is transferring the file to gaia.cs.umass.edu?
- <IP_ADDRESS>, port 1161. Client
- What is the IP address of gaia.cs.umass.edu? On what port number is it sending and receiving TCP segments for this connection?
- <IP_ADDRESS>, port 80. Gaia.cs.umass
- What is the IP address and TCP port number used by your client computer (source) to transfer the file to gaia.cs.umass.edu?
- <IP_ADDRESS>, port 33524. Me
- What is the sequence number of the TCP SYN segment that is used to initiate the TCP connection between the client computer and gaia.cs.umass.edu? What is it in the segment that identifies the segment as a SYN segment?
- Flag (SYN), SYN bit is set to 1.<PHONE_NUMBER>10.
- What is the sequence number of the SYNACK segment sent by gaia.cs.umass.edu to the client computer in reply to the SYN? What is the value of the Acknowledgement field in the SYNACK segment? How did gaia.cs.umass.edu determine that value? What is it in the segment that identifies the segment as a SYNACK segment?
- Sequence number is 0. Value of the acknowledgement field is 1. Flag identifies as SYN, ACK.<PHONE_NUMBER>10.
- What is the sequence number of the TCP segment containing the HTTP POST command? Note that in order to find the POST command, you’ll need to dig into the packet content field at the bottom of the Wireshark window, looking for a segment with a "POST" within its DATA field.
- Sequence number: 164041. (No. 199)
- Consider the TCP segment containing the HTTP POST as the first segment in the TCP connection. What are the sequence numbers of the first six segments in the TCP connection (including the segment containing the HTTP POST)? At what time was each segment sent? When was the ACK for each segment received? Given the difference between when each TCP segment was sent, and when its acknowledgement was received, what is the RTT value for each of the six segments? What is the EstimatedRTT value after the receipt of each ACK?
- Sequence number: 164041, 1, 1, 1, 1, 164091.
At this point got confused about some of the questions and what they wanted. Decided that rather than waste time here, to do other labs and learn more about other subject in Wireshark. Then if I had time I could come back to finish this lab.
Lab 5: UDP
One of the easier labs, did require to look up in the text for a couple of the problems. Searched for UDP files, usually inside SNMP messages/packets. Used the provided capture, but also tried to generate one of my own.
- Select one UDP packet from your trace. From this packet, determine how many fields there are in the UDP header. (You shouldn't look in the textbook! Answer these questions directly from what you observe in the packet trace.) Name these fields.
- 5 fields. source port, destination port, length, checksum.
- By consulting the displayed information in Wireshark's packet content field for this packet, determine the length (in bytes) of each of the UDP header fields.
- The value in the Length field is the length of what? (You can consult the text for this answer). Verify your claim with your captured UDP packet.
- length of the UDP header and data in bytes. The data is 50, and the header is 8.
- What is the maximum number of bytes that can be included in a UDP payload? (Hint: the answer to this question can be determined by your answer to 2. above)
- 65,527 bytes of data, plus the 8 byte header. 2^16-1 plus the header.
- What is the largest possible source port number? (Hint: see the hint in 4.)
- The largest possible port is 65,535 or 2^16-1.
- What is the protocol number for UDP? Give your answer in both hexadecimal and decimal notation. To answer this question, you’ll need to look into the Protocol field of the IP datagram containing this UDP segment (see Figure 4.13 in the text, and the discussion of IP header fields).
- The protocol number is 17. Which is 0x11 in hex.
- Examine a pair of UDP packets in which your host sends the first UDP packet and the second UDP packet is a reply to this first UDP packet. (Hint: for a second packet to be sent in response to a first packet, the sender of the first packet should be the destination of the second packet). Describe the relationship between the port numbers in the two packets.
- The source port and destination port are the reverse of each other. (ie. the port for A is the destination for B, and the port for B is the destination for A)


Lewis Hamilton to join Mercedes in $100m move from McLaren ...
Sep 28, 2012 . Telegraph Sport understands that Mercedes are waiting for their board in . Right up until the end the move was kept shrouded in secrecy.
http://www.telegraph.co.uk/sport/motorsport/formulaone/lewishamilton/9572696/Lewis-Hamilton-to-join-Mercedes-in-100m-move-from-McLaren-signing-a-three-year-deal.html
Treatment for Herniated or Bulging Discs
Mercedes Benz Parts Catalog
If you can't find the Mercedes Benz parts you're seeking, please don't give up! This online listing of fast moving Mercedes Benz parts represents a small fraction .
http://www.germanstar.net/Mercedes_Parts_Catalog.html
Mercedes dealership makes move to auto mall | News ...
1 day ago . The dealership will have a vehicle hauler to pick up vehicles for maintenance. Mercedes-Benz of Daytona is not the first to make the move from .
http://www.news-journalonline.com/article/20121211/BUSINESS/312119958/1024?Title=Mercedes-dealership-makes-move-to-auto-mall
moving on up mercedes Herniated or Bulging Discs
After two decades, city of St. Louis gets Mercedes dealer back ...
Oct 5, 2012 . TriStar Imports, a Mercedes-Benz dealership in Ellisville, plans to . The move adds up, in part, because of $2.2 million in tax-increment .
http://www.stltoday.com/business/local/after-two-decades-city-of-st-louis-gets-mercedes-dealer/article_f08e6e58-0e31-11e2-ba62-0019bb30f31a.html
The Jeffersons Moving On Up remixed by Mercedes Benz 2 - YouTube
Sep 16, 2006 . I'm not a fan of commercials, but these Benz joints are seriously on point.
http://www.youtube.com/watch?v=SZgoGQr-O_o
Official Impairment Listing for Spinal Disorders
Lewis Hamilton's move to Mercedes renews links with - The Guardian
Sep 28, 2012 . His move to Mercedes-Benz will disappoint those who enjoyed the sight . Although their performances to date have yet to live up to their past .
http://www.guardian.co.uk/sport/blog/2012/sep/28/lewis-hamilton-move-mercedes
- irish setter puppies in pennsylvania (narrowing of the spine)
Lewis Hamilton can grow up with Mercedes move | Mail Online
Sep 28, 2012 . Niki Lauda and Lewis Hamilton sat down for the last in a series of chats that culminated in the confirmation that Mercedes have signed him.
http://www.dailymail.co.uk/sport/formulaone/article-2210188/Lewis-Hamilton-grow-Mercedes-move.htmlF1 Fanatic round-up: Hamilton's Mercedes move "a mistake ...
Sep 29, 2012 . In the F1 Fanatic round-up: Whitmarsh says Hamilton has made a mistake Brawn denies out-bidding McLaren Ecclestone expects Todt to .
http://www.f1fanatic.co.uk/2012/09/29/f1-fanatic-roundup-299/
The Jeffersons Moving On Up remixed by Mercedes Benz - YouTube
Sep 16, 2006 . I'm not a fan of commercials, but these Benz joints are seriously on point.
http://www.youtube.com/watch?v=HZuIwyVfL2Y
Hamilton set to move to Mercedes - James Allen on F1
Sep 11, 2012 . You are here: Home > F1 News > Hamilton set to move to Mercedes . If Hamilton did not want this, why would he had signed up with XIX?
http://www.jamesallenonf1.com/2012/09/hamilton-set-to-move-to-mercedes/
Medical-Vocational Allowance for Herniated Disc
Mercedes Auto Transport - TX Car Shipping - Auto Moving Quotes
Movers.com found the following Auto Transport and Auto Moving Companies near Mercedes, Texas that match your move requirements. You will receive up to 7 .
http://www.movers.com/auto-transport/tx-texas/mercedes.html
Mercedes: idles..wont move..The engine check light is not on ...
Apr 3, 2010 . Question - Mercedes: idles..wont move..The engine check light is not on. Find the answer to this and other Mercedes questions on JustAnswer.
http://www.justanswer.com/mercedes/3c3ab-mercedes-idles-won-t-move-the-engine-check-light-not.html
Appealing a Denial of Benefits
Mercedes-Benz F-Cell - Wikipedia, the free encyclopedia
In September, 2010, Mercedes-Benz announced that a limited run of 500 2010 . On June 21, 2011, Daimler announced it was moving up commercialization of .
http://en.wikipedia.org/wiki/Mercedes-Benz_F-Cell
Do late model Mercedes' horizontal running lights move up ... - Quora
When I see one in my rear view mirror they appear to, at other times they don't.. Answer 1 of 1: No, they don't move. LED lights, unlike conventional lights, .
http://www.quora.com/Cars-and-Automobiles/Do-late-model-Mercedes-horizontal-running-lights-move-up-and-down-when-the-vehicle-is-in-motion


JAMON, JAMON A film review by James Berardinelli Copyright 1994 James Berardinelli
Rating (Linear 0 to 10): 5.6
Date Released: varies Running Length: 1:30 Rated: No MPAA Rating (Sexual situations, nudity, language, violence)
Starring: Penelope Cruz, Anna Galiena, Javier Bardem, Stefania Sandrelli, Juan Diego Director: Bigas Luna Producer: Andres Vicente Gomez Screenplay: Cuca Canals and Bigas Luna Music: Nicola Piovani Released by Academy Entertainment In Spanish with subtitles
JAMON, JAMON, a "tale of ham and passion" (and literally translated HAM, HAM) could perhaps be described as a "Grade B art film." Although possessing a biting wit and excellent sense of the offbeat, too much of JAMON, JAMON follows obvious paths. Had this been made in Hollywood, it would be on the fast track to the late night cable circuit.
When Silvia (Penelope Cruz) breaks the news to her boyfriend Manuel (Juan Diego) that she's pregnant, he immediately proposes, giving her a soda-can top ring to seal the engagement.
One of the most obvious problems with JAMON, JAMON is its subpar acting. Everyone in this film looks good (especially Penelope Cruz, Anna Galiena--of THE HAIRDRESSER'S HUSBAND, and Javier Bardem), but even the most accomplished of the performers have at least one bad sequence (although, in all honesty, Ms. Cruz, who also appears in BELLE EPOQUE, emanates such sensuality that it's easy to overlook her less-impressive acting moments). There are several scenes likely to cause winces because of the inability of certain cast members to adequately deliver their lines.
JAMON, JAMON never reaches a stable tone, vacillating between absurd comedy and over-the-top melodrama. For variety, there's also a sequence of surprisingly graphic violence. The film is at its best when it ventures into the realm of eroticism (had it gone to the MPAA for rating, an NC-17 would have been likely), and some of the humor during the sex scenes is among the most amusing.
The absurd is clearly JAMON, JAMON's playground, with ham and garlic as appetizers for every activity from lovemaking to duels with animal haunches. The movie is steeped in sex, and sometimes it's all-but-impossible to figure out who's sleeping with whom. Or, perhaps more appropriately, who isn't sleeping with whom.
JAMON, JAMON is missing the element which could blend its disparate segments into an engagingly campy whole. Without this, it seems like a cheap cross between last year's LIKE WATER FOR CHOCOLATE and the French DELICATESSEN. JAMON, JAMON is good for a moment's diversion, but the overall impression is more of a ham sandwich than a full meal.
- James Berardinelli<EMAIL_ADDRESS>.
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Vijay Saiwal---[Design tuts] I am Electronics Engineering student, currently studing at Shri Sant Gajanan Maharaj Collge of Enginnering\\


|
Convex Hull
|
#include "graham_scan.h"
Functions | |
| double | nextDirection (Point p, Point q, Point r) |
| void | swapLeftmostPoint (Point p[], int n) |
| Finds the leftmost point and then brings it to index 0. More... | |
| int | removeThetaCollinear (PolarPoint inp[], int n, PolarPoint out[]) |
| void | sortPoints (PolarPoint inp[], int n) |
| A in-place sort of all points. More... | |
| void | computeHull (Point inp[], int n, Node **root) |
| void | getHull (Point input[], int len, Node **root) |
Adds the points that are the vertices of the convex hull into the passed stack
| inp | Array of all points in cartesian form; sorted |
| n | length of the array |
| root | pointer to the root node pointer of a stack |
The single function that needs to be called in order to get the vertices of the convex hull using Graham's Scan algo
| input | Input array of Points |
| len | length of array |
| root | Stack root node to which vertices will be pushed |
Computes whether the next point is to the left or to the right or in the same direction.
| p | The previous point |
| q | The point common to both segments, i.e. current point |
| r | The next point |
| int removeThetaCollinear | ( | PolarPoint | inp[], |
| int | n, | ||
| PolarPoint | out[] | ||
| ) |
If multiple points have the same angle, then only the one with largest radius remains in the out array
| inp | Array of points in Polar form. This MUST be sorted before being passed |
| n | Length of array |
| out | an array of valid points. |
| void sortPoints | ( | PolarPoint | inp[], |
| int | n | ||
| ) |
A in-place sort of all points.
Points are sorted according to increasing angle, then radius. The leftmost point is not passed to the function to ensure that inp[0] is the origin (0.0,0.0). If this is not done, the points below origin (theta < 0) are before it in the array, which is not our desired traversal path. O(n^2) complexity. Can be brought to O(nlogn) by using a QuickSort or other appropriate algorithm
| inp | Array of points in polar representation |
| n | Length of the array |


Optimization draft
Optimization with spatial-varying weights
Term1 : minimizing curvature
Term2 : keeping curvature constant
Note
- Now I use square distance of 2-norm.
- The only constraints I have now for each $e_i$ is $ 0 \leq e_i \leq 1$.
Experiment
To try out the optimization, I optimize different shapes and different weights combinations.
uniform weights
In these examples, I use both weighting as 0.5, i.e. $W_1(e_i) = 0.5, W_2(e_i) = 0.5$ for each $i$.
Please see the following results:
- https://www.cs.ubc.ca/~ichaos/research/nbview/solver%20viz-circle109.html
- https://www.cs.ubc.ca/~ichaos/research/nbview/solver%20viz-rect1.html
- https://www.cs.ubc.ca/~ichaos/research/nbview/solver%20viz-heart298.html
- https://www.cs.ubc.ca/~ichaos/research/nbview/solver%20viz-triangle36.html
- https://www.cs.ubc.ca/~ichaos/research/nbview/solver%20viz-phone.html
spatial-varying weights
The thing is that I tried to add anisotropic weights into the optimization, but I didn’t get reasonable results when I manually set the weights. Most of the time, the result are just very close to the isotropic weights results. So I did a test that randomly generate the weights for every $e_i$, and the results still looks very close, and the optimized energy from the solver are close.
I am trying to find out what is the problem right now…


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(PHP 4, PHP 5, PHP 7)
unpack — Unpack data from binary string
$format
, string $data
[, int $offset
= 0
] ) : array
Unpacks from a binary string into an array according to the given
format
.
The unpacked data is stored in an associative array. To accomplish this you have to name the different format codes and separate them by a slash /. If a repeater argument is present, then each of the array keys will have a sequence number behind the given name.
format
See pack() for an explanation of the format codes.
data
The packed data.
offset
The offset to begin unpacking from.
Returns an associative array containing unpacked elements of binary string.
| 版本 | 说明 |
|---|---|
| 7.2.0 | float and double types supports both Big Endian and Little Endian. |
| 7.1.0 |
The optional offset has been added.
|
| 5.5.0 |
Changes were made to bring this function into line with Perl: The "a" code now retains trailing NULL bytes. The "A" code now strips all trailing ASCII whitespace (spaces, tabs, newlines, carriage returns, and NULL bytes). The "Z" code was added for NULL-padded strings, and removes trailing NULL bytes. |
Example #1 unpack() example
<?php
$binarydata = "\x04\x00\xa0\x00";
$array = unpack("cchars/nint", $binarydata);
print_r($array);
?>
以上例程会输出：
Array ( [chars] => 4 [int] => 160 )
Example #2 unpack() example with a repeater
<?php
$binarydata = "\x04\x00\xa0\x00";
$array = unpack("c2chars/nint", $binarydata);
print_r($array);
?>
以上例程会输出：
Array ( [chars1] => 4 [chars2] => 0 [int] => 40960 )
Note that PHP internally stores integral values as signed. If you unpack a large unsigned long and it is of the same size as PHP internally stored values the result will be a negative number even though unsigned unpacking was specified.
If you do not name an element, numeric indices starting from 1 are used. Be aware that if you have more than one unnamed element, some data is overwritten because the numbering restarts from 1 for each element.
Example #3 unpack() example with unnamed keys
<?php
$binarydata = "\x32\x42\x00\xa0";
$array = unpack("c2/n", $binarydata);
var_dump($array);
?>
以上例程会输出：
array(2) { [1]=> int(160) [2]=> int(66) }
Note that the first value from the c specifier is overwritten by the first value from the n specifier.


Timings Versions Contrabass
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end
of the section.
... m'ss.s" Section Name Selection
Cmd/Ctrl+Click to add sections
Shift+Click to add range of sections
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One of many ways to handle an HTTP request is by writing a method on your URL-bound classes. In Stapler-speak, these methods are called "web methods".
Web methods are public instance methods that has the name that starts with "do", for example:
class MyRootAction { ... @RequirePOST public HttpResponse doStart() { start(); return HttpResponses.redirectTo("."); } }
Such a method would handle an HTTP request sent to /.../start
(again, see the reference for the exact routing rules)
Parameters
Web methods can define parameters. When Stapler invokes your web method, it needs your help to figure out what you expect in those parameters, and there are several ways to do this.
Firstly, if the type of a parameter is one of the following "well-recognized" types, Stapler would instantly know what to do:
- StaplerRequest/
HttpServletRequest
— the request object - StaplerResponse/
HttpServletResponse
— the response object
Secondly, you can place parameter injection annotations to instruct Jenkins what you want to see in that parameter. Unlike typical Java programming, parameter names are significant.
- @Header: requests that the value of the request HTTP header be injected.
public HttpResponse doStart(@Header String referer) { ... }
- @QueryParameter: requests that the value of the request parameter be injected. This includes a submitted form and a query parameter.
- @AncestorInPath: Stapler will call
StaplerRequest.findAncestor(Class)
and inject the obtained object. This object is the nearest "ancestor" of the specified type in the current URL.
Parameter injection annotations are extensible. One can define a custom injection parameter by using the @InjectedParameter] meta annotation, which is how all these annotations are defined.
The type of the injected parameter can be anything, and Apache Commons Beanutils is used to convert the incoming value into the appropriate Java type your method requests.
Return value and exception
If a web method returns, either normally through the return statement or abnormally through a thrown exception, Stapler checks if the return value / exception implements HttpResponse interface. If so, this object is expected to render a response via its generateResponse
method.
Jenkins defines a number of high-level HTTP response classes that implements this interface, such as AutoCompletionCandidates, ContextMenu, ListBoxModel, FormValidation, TrendChart, etc.
There's also HttpResponses that provides a number of static methods that help you create typical HTTP responses, such as redirect, errors, serving static files, etc.
Interceptor Annotations
Web methods can have "interceptor annotations", which decorates your web method by adding additional processing before and after your method gets invoked. Interceptor annotations to web methods are like servlet fileters to servlets.
Jenkins defines several built-in interceptor annotations:
- @RequirePOST: aborts with "400 bad request" if the request is not POST. This is how we protect endpoints that can update states in Jenkins, with crumb.
- @RespondSuccess: used on a web method that returns "void" so that when the method returns normally "200 success" will be returned as a response.
Interceptor annotations are extensible through InterceptorAnnotation.
Parameter injection, return value/exception response rendering, and interceptor annotations help you reduce the HTTP dependency in your model objects. This tends to make code easier and more easily testable.
@WebMethod
Normally, a name of a web method determines how the request is routed. For example, doEatPizza()
would be mapped to .../eatPizza
. But you can explicitly specify the URL name by using WebMethod annotation. For example, the following code maps .../abc
and .../xyz.xml
to the same method.
@WebMethod("abc","xyz.xml") HttpResponse doMonkey(...) { ... }


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{% extends "layout.html" %} {% block body %}
Christopher DeBoever and Manuel A. Rivas
C.D. developed the web application and M.A.R designed the study.
This app displays the genetic correlation and other genetic parameters for various phenotypes from the UK Biobank.
Learn more about the parameters used in this app
Genetic correlation table along with estimates of scale of effect size is available for .