| Opcode/Instruction | 64/32bit Mode Support | CPUID Feature Flag | Description |
| F2 XACQUIRE | V/V | HLE1 | A hint used with an “XACQUIRE-enabled“ instruction to start lock elision on the instruction memory operand address. |
| F3 XRELEASE | V/V | HLE | A hint used with an “XRELEASE-enabled“ instruction to end lock elision on the instruction memory operand address. |
Notes: 1. Software is not required to check the HLE feature flag to use XACQUIRE or XRELEASE, as they are treated as regular prefix if HLE feature flag reports 0.
The XACQUIRE prefix is a hint to start lock elision on the memory address specified by the instruction and the XRELEASE prefix is a hint to end lock elision on the memory address specified by the instruction. The XACQUIRE prefix hint can only be used with the following instructions (these instructions are also referred to as XACQUIRE-enabled when used with the XACQUIRE prefix):
The XRELEASE prefix hint can only be used with the following instructions (also referred to as XRELEASE-enabled when used with the XRELEASE prefix):
The lock variables must satisfy the guidelines described in Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1, Section 15.3.3, for elision to be successful, otherwise an HLE abort may be signaled. If an encoded byte sequence that meets XACQUIRE/XRELEASE requirements includes both prefixes, then the HLE semantic is determined by the prefix byte that is placed closest to the instruction opcode. For example, an F3F2C6 will not be treated as a XRELEASE-enabled instruction since the F2H (XACQUIRE) is closest to the instruction opcode C6. Similarly, an F2F3F0 prefixed instruction will be treated as a XRELEASE-enabled instruction since F3H (XRELEASE) is closest to the instruction opcode. Intel 64 and IA-32 Compatibility The effect of the XACQUIRE/XRELEASE prefix hint is the same in non-64-bit modes and in 64-bit mode.
| For instructions that do not support the XACQUIRE hint, the presence of the F2H prior hardware, according to • | prefix behaves the same way as REPNE/REPNZ semantics for string instructions, |
| • | Serve as SIMD prefix for legacy SIMD instructions operating on XMM register |
| • | Cause #UD if prepending the VEX prefix. |
| • | Undefined for non-string instructions or other situations. |
For instructions that do not support the XRELEASE hint, the presence of the F3H prefix behaves the same way as in prior hardware, according to
XACQUIRE IF XACQUIRE-enabled instruction THEN IF (HLE_NEST_COUNT < MAX_HLE_NEST_COUNT) THEN HLE_NEST_COUNT++ IF (HLE_NEST_COUNT = 1) THEN HLE_ACTIVE ← 1 IF 64-bit mode THEN restartRIP ← instruction pointer of the XACQUIRE-enabled instruction ELSE restartEIP ← instruction pointer of the XACQUIRE-enabled instruction FI; Enter HLE Execution (* record register state, start tracking memory state *) FI; (* HLE_NEST_COUNT = 1*) IF ElisionBufferAvailable THEN Allocate elision buffer Record address and data for forwarding and commit checking Perform elision ELSE Perform lock acquire operation transactionally but without elision FI; ELSE (* HLE_NEST_COUNT = MAX_HLE_NEST_COUNT *) GOTO HLE_ABORT_PROCESSING FI; ELSE Treat instruction as non-XACQUIRE F2H prefixed legacy instruction FI; XRELEASE IF XRELEASE-enabled instruction THEN IF (HLE_NEST_COUNT > 0) THEN HLE_NEST_COUNT-- IF lock address matches in elision buffer THEN IF lock satisfies address and value requirements THEN Deallocate elision buffer ELSE GOTO HLE_ABORT_PROCESSING FI; FI; IF (HLE_NEST_COUNT = 0) THEN IF NoAllocatedElisionBuffer THEN Try to commit transactional execution IF fail to commit transactional execution THEN GOTO HLE_ABORT_PROCESSING; ELSE (* commit success *) HLE_ACTIVE ← 0 FI; ELSE GOTO HLE_ABORT_PROCESSING FI; FI; FI; (* HLE_NEST_COUNT > 0 *) ELSE Treat instruction as non-XRELEASE F3H prefixed legacy instruction FI; (* For any HLE abort condition encountered during HLE execution *) HLE_ABORT_PROCESSING: HLE_ACTIVE ← 0 HLE_NEST_COUNT ← 0 Restore architectural register state Discard memory updates performed in transaction Free any allocated lock elision buffers IF 64-bit mode THEN RIP ← restartRIP ELSE EIP ← restartEIP FI; Execute and retire instruction at RIP (or EIP) and ignore any HLE hint END
None
| #GP(0) | If the use of prefix causes instruction length to exceed 15 bytes. |


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This story is part of a series of specially designed stories that represents some of the best journalism The Post has to offer. Check out the rest of the special projects here.
RILEY SCOTT
05.30.19
For a small, hidden town in southeast Ohio, Athens has many characteristics that its residents and students treasure alike. Here’s what the culture staffers of The Post chose as the best parts of an already perfect place:
Baylee DeMuth: Fusion Noodle Company has my heart (and my money). Its General Tso’s chicken is my go-to choice almost any time I find myself Uptown. It’s even $2 off a certain day of the week, and I love a good deal.
Riley Runnells: Bagel Street Deli is incredible. There are so many different options of bagel sandwiches, and you can even create your own. The food, atmosphere and epic music selection make Bagel Street the best place to eat Uptown, and everyone should try it.
Sydney Walters: My favorite lunch (and late night dinner) is probably Ginger Asian Kitchen. It reminds me a lot of BIBIBOP Asian Grill from back home, and I LOVE sushi. One of my favorite dinner stops is grabbing some pizza from Courtside Pizza on slice night. I mean, who would turn down 50 cent slices of pizza?
Kevin Pan: Union Street Diner, because some of my best memories of Athens have been from sitting in those booths at some random time past midnight.
Baylee: I find myself studying in Front Room Coffeehouse a lot actually. I like the view of campus from the windows and being around so many other people who are also studying motivates me to get my own work done.
Joseph Stanichar: If you’re a caffeine addict (and if you aren’t yet, you will be), study where the coffee is. Whether that means a coffee shop, Alden library with Cafe BiblioTech, or your dorm if you have a coffee maker, caffeination is nearly as important as hydration for focused studying.
Riley: My three favorite places to study are Front Room Coffeehouse, Donkey Coffee or my dorm. Front Room is usually crowded, and I like having a lot of people around me, so that’s an ideal spot. Donkey Coffee is such a chill atmosphere with comfortable seating everywhere and delicious coffee, so I’ll get a lot of work done there. My dorm isn’t the most exciting place, but I get a lot done when I put some music on, have some snacks and sit down to focus on my work.
Sydney: I spend way too much time (and money) studying at Donkey Coffee. Good coffee, the coolest baristas, and a laid back atmosphere make Donkey the best place to study. If I don’t want to walk Uptown or spend money on coffee, I love studying on the fifth floor of Alden, back in the stacks, looking out at College Green. During the nicer days, I study on the patio outside Front Room Coffeehouse or in my hammock wherever I can find trees.
Jillian Craig: Most of the time, I study in my dorm because it’s quiet and calm and a relaxing place to study. I will go there when I’m done with classes for the day to try and get my work done.  Alden is convenient because the location is central to a lot of lecture halls, but Donkey Coffee is delicious and the atmosphere is just as productive as Alden.
Baylee: My favorite green hands down is East Green. It’s so pretty I literally feel like I’m walking through a magical forest.
Riley: My favorite green is definitely East Green. I lived there freshman year, and it’s so gorgeous to walk around. Not to mention having Jefferson Hall right next door is a pretty good perk, because there’s a deli for lunch, a grocery store and a mailroom. East Green is convenient and gorgeous. Everyone should walk through it when the weather is nice and appreciate how pretty it is.
Sydney: 100 percent East Green. East Green has so many trees, easy access to College Green and access to two dining halls without walking to the other side of campus. You also have Jefferson Market, which is the largest and easily the best campus market.
Kevin: College Green. Everything about it is amazing.
Jillian: Don’t let anyone fool you: West Green is the best green. You don’t have to worry about hiking up Jefferson Hill or Morton Hill, Baker Center is close by and it only takes 10 minutes to get to most places on campus. West Green is also one of the cleaner greens on campus and has one of the healthier dining halls available on campus.
Baylee: Despite Shively being so close to where I’ve always lived on campus, I have to say Nelson is my favorite. If I can eat waffles for breakfast, lunch and dinner, I will, and Nelson gives me that option.
Joesph: Respectfully yet intensely disagreeing with Baylee’s opinion, Boyd easily has the best food of the dining halls, with quality sandwiches, pasta, meat and vegetarian options. Shively is fine other than the inconvenience of being closed on weekends, but Nelson’s unchanging and uninteresting options get very old very fast.
Riley: Boyd is definitely the best dining hall. Boyd has so many delicious options, and the ‘Destinations’ section is by far superior to any other section or dining hall. Boyd is also just a pretty atmosphere to hang out in because there’s a lot of windows and fun music playing wherever you sit.
Sydney: This is difficult. I like each dining hall for different reasons. I love Nelson’s breakfast, especially its homemade donuts and cheesy hashbrowns. I worked at Nelson my first semester and made omelets, so the made-to-order omelets are a cool feature. I lived in Shively, so the convenience of having a dining hall downstairs made Shively seem less miserable. I really like Shively’s Grab ’N Go, which is like Chipotle, and the ice cream is delicious. Boyd has the healthiest and probably the best tasting food and atmosphere. Its noodle bar is the main reason I walked across campus for dinner.
Kevin: I went to Boyd every single day of freshman year and almost every single day of sophomore year. So yeah, it’s not bad.
Baylee: I think Artifacts Gallery has to be my favorite. It’s a boutique with a lot of interesting finds that just screams Athens.
Riley: Artifacts Gallery is definitely my favorite. The boutique has so many unique finds and interesting items that make it so special. Like Baylee said, it screams Athens.
Sydney: I’m a big music nerd, so I love Blue Eagle Music. If you play music of any kind, you’ll get lost in the store for hours.
Kevin: I like shopping for drinks at any of our wonderful Uptown establishments.
Baylee: On a really nice day, I like to relax in the Scripps Hall Amphitheater. I just love the grassy steps that are perfect for lounging in, while also getting a nice tan.
Joesph: Don’t be afraid to relax at Alden! Nobody’s going to check on you to make sure you’re studying, so if you want to curl up in an egg chair and binge Netflix, by all means go for it.
Riley: I love chilling out behind South Green and laying on a blanket by the river. It’s such a relaxing place to study, nap or people-watch.
Sydney: I’ve taken countless naps in my hammock on College Green or South Beach. If you love the outdoors, a hammock is a necessity on this campus.
Jillian: The patio chairs at Front Room are dangerous in the best possible way. When the weather is nice, the patio chairs are my go-to place. Sitting in the sun with a good book (or even a few assignments) is great way to unwind after a long day of classes.
Baylee: Court Street Coffee has the best iced mochas in town. I wasn’t a coffee drinker until I started getting coffee from there.
Joesph: Wherever there is coffee. You stop being picky after a while.
Riley: Donkey Coffee is my favorite. Between the atmosphere and its power chai, I could spend every day hanging out there and drinking the delicious coffee.
Sydney: Donkey, no questions asked. The baristas are the best. It has the cutest coffee mugs and the coffee is delicious (try the Iced Mocha; it is FANTASTIC.)
Baylee: I’m a big fan of walking along the Hocking River. It’s so cool to be on the outskirts of campus, walking by the golf course and eventually reaching the cherry blossom trees. I’ve just gotten lost admiring how beautiful our school is.
Riley: I’m not much of a nature person. I typically like to spend time indoors or in cities, but my favorite place is behind South Green by the river. You see cars driving by and people running, biking and rollerblading on the trail. It’s just a relaxing place to lay down a blanket and read a book or study for classes.
Sydney: If I have the means to leave campus, Strouds Run is so peaceful. Hardly anyone goes there, and the lake is small and quaint. It’s just so quiet. I also love the area between Alden and Cutler. It’s surrounded by buildings, but it feels like you’re in a forest just sitting there doing homework.
Jillian: Most definitely The Ridges! Everyone seems to be afraid of it, but there’s a lot of history to the grounds, and the hiking trails are beautiful. I could spend hours walking around the property, taking in the scenery.
Baylee: My favorite thing about Athens is that it’s nothing like where I’m from. Everything from the old red bricks I walk on to the hills that surround campus, it’s an entirely different world that I’m always excited to come back to in the fall.
Joesph: No matter the weather, OU’s campus always looks like a postcard.   Watch them for more than a minute, and they’ll always do something entertaining.
Riley: My favorite thing about Athens is the beauty of the nature. Everything about Athens is beautiful: the trees, the flowers, the grass and a plethora of other things. It could be snowing or a crystal clear sunny day, and Athens would beat out any college area for its beauty.
Sydney: I love Athens because it is the perfect definition of a college town. There are so many things within walking distance of campus. It also has such a small town feel. I see four or five of my friends on a short walk from my dorm to class.
Kevin: Athens itself. This town and the people here are amazing. I’ve met the best people, made the best memories and had the time of my life here. It truly is a home and it’s also much more. I’ve never seen time fly by so fast before I got here.
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While Bootstrap uses em
s or rem
s for defining most sizes, px
s are used for grid breakpoints and container widths. This is because the viewport width is in pixels and does not change with the font size.
See how aspects of the Bootstrap grid system work across multiple devices with a handy table.
|
Extra small
<576px |
Small
≥576px |
Medium
≥768px |
Large
≥992px |
Extra large
≥1200px |
|
|---|---|---|---|---|---|
| Max container width | None (auto) | 540px | 720px | 960px | 1140px |
| Class prefix | .col- |
.col-sm- |
.col-md- |
.col-lg- |
.col-xl- |
| # of columns | 12 | ||||
| Gutter width | 30px (15px on each side of a column) | ||||
| Nestable | Yes | ||||
| Column ordering | Yes |
For example, here are two grid layouts that apply to every device and viewport, from xs
to xl
. Add any number of unit-less classes for each breakpoint you need and every column will be the same width.
Auto-layout for flexbox grid columns also means you can set the width of one column and have the sibling columns automatically resize around it. You may use predefined grid classes (as shown below), grid mixins, or inline widths. Note that the other columns will resize no matter the width of the center column.
Use col-{breakpoint}-auto
classes to size columns based on the natural width of their content.
Create equal-width columns that span multiple rows by inserting a .w-100
where you want the columns to break to a new line. Make the breaks responsive by mixing the .w-100
with some responsive display utilities.
For grids that are the same from the smallest of devices to the largest, use the .col
and .col-*
classes. Specify a numbered class when you need a particularly sized column; otherwise, feel free to stick to .col
.
Using a single set of .col-sm-*
classes, you can create a basic grid system that starts out stacked and becomes horizontal at the small breakpoint (sm
).
Use .order-
classes for controlling the visual order of your content. These classes are responsive, so you can set the order
by breakpoint (e.g., .order-1.order-md-2
). Includes support for 1
through 12
across all five grid tiers.
There are also responsive .order-first
and .order-last
classes that change the order
of an element by applying order: -1
and order: 13
(order: $columns + 1
), respectively. These classes can also be intermixed with the numbered .order-*
classes as needed.
With the move to flexbox in v4, you can use margin utilities like .mr-auto
to force sibling columns away from one another.
To nest your content with the default grid, add a new .row
and set of .col-sm-*
columns within an existing .col-sm-*
column. Nested rows should include a set of columns that add up to 12 or fewer (it is not required that you use all 12 available columns).
Don’t want your columns to simply stack in some grid tiers? Use a combination of different classes for each tier as needed. See the example below for a better idea of how it all works.
Use flexbox alignment utilities to vertically and horizontally align columns.
If more than 12 columns are placed within a single row, each group of extra columns will, as one unit, wrap onto a new line.
Since 9 + 4 = 13 > 12, this 4-column-wide div gets wrapped onto a new line as one contiguous unit.
Subsequent columns continue along the new line.
Breaking columns to a new line in flexbox requires a small hack: add an element with width: 100%
wherever you want to wrap your columns to a new line. Normally this is accomplished with multiple .row
s, but not every implementation method can account for this.
You may also apply this break at specific breakpoints with our responsive display utilities.
Move columns to the right using .offset-md-*
classes. These classes increase the left margin of a column by *
columns. For example, .offset-md-4
moves .col-md-4
over four columns.
In addition to column clearing at responsive breakpoints, you may need to reset offsets. See this in action in the grid example.


{% extends "index.html" %} {% block content %}
Lounge-o-Matic is a streaming webservice for enjoying media with your friends (invite only). For the first sprint(s) of the project, the service will be limited to music, if time allows, the service should be extensible enough to provide video streaming as well.
A lounge is a point where users of the system meet. Here, there is a media player and a chat (maybe, if time allows) so that the users may socialize in real-time.
To allow people into your lounge, the owner sends an invitation to a friend by giving away a key. Other users connect to the same room using their own keys and are able to listen to the same media in a synchronized manner as long as their key is valid. The owner of the lounge should be able to revoke the key at any time, effectively kicking the user out.
Users connect to the frontend service to authenticate their visit against the backend. Then, they may visit their own lounge (or one of their friends' rooms) to play media or upload content.
The upload process will work by giving the user a upload dialog to the backend, transcoding it to a lower bitrate and moving it to the user's storage. These files should then be exposed to the participants of the owner's lounge.
See the frontend, backend and the streaming server.
{% endblock %}


--- layout: post title: 15th Anniversary of Rwandan Genocide date: 2009-04-07 15:10:11.000000000 -04:00 categories: - International Relations - Politics tags: [] status: publish type: post published: true meta: _edit_last: '7106425' author: login: samarthbhaskar email<EMAIL_ADDRESS>display_name: samarthbhaskar first_name: '' last_name: '' ---
Today, April 7th, is the 15th anniversary of the Rwandan genocide. In 1994, 800,000 people were killed over a period of 100 days. That equals 8,000 people a day, for 100 days. That's more than 2 and a half times the number of people killed on 9/11, for 100 consecutive days, in a country with a population equivalent to New York City. 1 in 10 Rwandans were murdered and millions more displaced. All of this happened while the rest of the world stood and watched without interfering, because it didn't want to get its hands dirty.
Taking the example of then President Clinton, who refused to get involved because of the blunder that happened in Somalia a few years before, I think its clear that these mistakes were not a one time thing (Read: Darfur, Burma, etc). Referring to the genocide in Rwanda as "genocide like events" or "instances of genocide" instead calling it genocide in order to absolve himself of the responsibilities associated with genocide as a leader in the international community. Although he has come out and apologized since, its really to no avail for those affected by this conflict.
In memory of those who lost their lives, I think its incumbent upon us to hold our own governments and the international community responsible for these instances and to make sure things like this become absolutely impermissible in the future. Of course I'm talking about genocide being impermissible but also the apathy, indifference and lack of responsibility on the part of the international community.
If you're interested in reading further about this event, here are a few of my favorite books and documentaries on the topic
Shake Hands with the Devil - Romeo Dallaire
Shake Hands with the Devil (documentary)
We Wish to Inform you that tomorrow we will be killed with our families: Stories from Rwanda - Phillip Gourevitch
We did Nothing - Linda Polman
A complete list of books can be found here


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Travel Guide
New York
Population: 9,234,641
Capital: Albany
Call Code: +1
Region: Americas
Native: American, European
TimeZone: GMT-4
Temperature:


Out on the endless ocean
We tear along the gales
With rum inside our bellies warm and freedom in our sails
A wayward bunch of scoundrels
Assassins, thieves and slaves
The rich and blue bloods fear us when we hunt upon the waves
And when you see it coming
That flag of baleful black
No point in turning tail there’s no escaping our attack!
(Chorus)
YO-HO!
YO-HO!
We row beneath the black flag A rollickin’ we
We own the sea & sky
YO-HO!
YO-HO!
We row beneath the black flag A rollickin’ we go!
We bleed the kingdoms dry!!
Defy the odds against us
A pirate knows no fear
Our steel is ready and our retribution is severe
We plunder from the greedy
With blood and with our steel
We rob the rich of their Ill-gotten gain & make them kneel
Behold the oceans’s mysteries
The tales of ancient deeds
We follow in the footsteps of a silent secret creed
Come On!!!
YO-HO!
YO-HO!
We row beneath the black flag A rollickin’ we
We own the sea & sky
YO-HO!
YO-HO!
We row beneath the black flag A rollickin’ we go!
We bleed the kingdoms dry!!
Come On!!!
YO-HO!
YO-HO!
We row beneath the black flag A rollickin’ we
We own the sea & sky
YO-HO!
YO-HO!
We row beneath the black flag A rollickin’ we go!
We bleed the kingdoms dry!!
Huzzah!!!


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