r*o
2 楼
【 以下文字转载自 SanFrancisco 讨论区 】
发信人: coolbb (kubaobao), 信区: SanFrancisco
标 题: 绝对笑喷!暴强盒饭大叔狂喷“蛋蛋”让张艺谋崩溃了!(zz)
发信站: BBS 未名空间站 (Wed Mar 17 14:06:21 2010, 美东)
发信人: coolbb (kubaobao), 信区: SanFrancisco
标 题: 绝对笑喷!暴强盒饭大叔狂喷“蛋蛋”让张艺谋崩溃了!(zz)
发信站: BBS 未名空间站 (Wed Mar 17 14:06:21 2010, 美东)
l*9
3 楼
如何确保多线程程序在 multicore server 上确实使用了 所有的 core
to do computing in parallel physically (not logically)
I have a multicore server, which has 24 CPU, each CPU has 6 cores.
It is Intel xzeon X5650 2.67GHz
cpu cores : 6 (support 6 threads)
cpu MHz : 1596.000
totally, I have 24 * 6 = 144 cores.
I designed a multithreaded C++ program with boost/thread.
How to make sure that my program is run by all 144 cores ?
Any help is really appreciated.
thanks
to do computing in parallel physically (not logically)
I have a multicore server, which has 24 CPU, each CPU has 6 cores.
It is Intel xzeon X5650 2.67GHz
cpu cores : 6 (support 6 threads)
cpu MHz : 1596.000
totally, I have 24 * 6 = 144 cores.
I designed a multithreaded C++ program with boost/thread.
How to make sure that my program is run by all 144 cores ?
Any help is really appreciated.
thanks
m*k
4 楼
正常
【在 e******e 的大作中提到】
: 我家快4岁，周末去电影院看Yogi Bear，他说看不懂。
【在 e******e 的大作中提到】
: 我家快4岁，周末去电影院看Yogi Bear，他说看不懂。
t*t
5 楼
you may set processor affinity, which makes each thread a preferred core.
however it is not guaranteed. i don't think you can guarantee it anyway.
on linux the command is taskset.
【在 l******9 的大作中提到】
: 如何确保多线程程序在 multicore server 上确实使用了 所有的 core
: to do computing in parallel physically (not logically)
: I have a multicore server, which has 24 CPU, each CPU has 6 cores.
: It is Intel xzeon X5650 2.67GHz
: cpu cores : 6 (support 6 threads)
: cpu MHz : 1596.000
: totally, I have 24 * 6 = 144 cores.
: I designed a multithreaded C++ program with boost/thread.
: How to make sure that my program is run by all 144 cores ?
: Any help is really appreciated.
however it is not guaranteed. i don't think you can guarantee it anyway.
on linux the command is taskset.
【在 l******9 的大作中提到】
: 如何确保多线程程序在 multicore server 上确实使用了 所有的 core
: to do computing in parallel physically (not logically)
: I have a multicore server, which has 24 CPU, each CPU has 6 cores.
: It is Intel xzeon X5650 2.67GHz
: cpu cores : 6 (support 6 threads)
: cpu MHz : 1596.000
: totally, I have 24 * 6 = 144 cores.
: I designed a multithreaded C++ program with boost/thread.
: How to make sure that my program is run by all 144 cores ?
: Any help is really appreciated.
s*a
6 楼
去影院看多半不适合这么小的孩子。现在很多电影虽然是卡通，但是还是按照成年人的
习惯来制作，尤其是语速，图像转换等等，说是给孩子看的，其实是给大孩子或成人看
的。比如Toy Story 3，明显的卡通版越狱。
其实4岁的孩子只能看懂电影里的一些东西，而且还可能要看好几遍。所以，最好就是
买个碟，在家反复看，这样，他们还有时间问些问题，有助理解。孩子对电影不像成人
，看一遍就完了，他们可不在乎多看几遍，喜欢的就是那些人物。
习惯来制作，尤其是语速，图像转换等等，说是给孩子看的，其实是给大孩子或成人看
的。比如Toy Story 3，明显的卡通版越狱。
其实4岁的孩子只能看懂电影里的一些东西，而且还可能要看好几遍。所以，最好就是
买个碟，在家反复看，这样，他们还有时间问些问题，有助理解。孩子对电影不像成人
，看一遍就完了，他们可不在乎多看几遍，喜欢的就是那些人物。
l*9
7 楼
thanks for your reply.
My program needs to run many (about 10,000+) computing tasks.
Each task's run time is very very short (< 0.1 second or even less).
At each iteration, all these tasks are run in parallel. Some of them
need to exchange some data (it is very small) and then go on.
I want to keep all 144 cores as busy as possible so that my program
can be done as fast as possible.
So, I want to associate each task with a distinct thread and schedule
threads as many as possible. Also, try yo make the workload balance
among these cores.
How can I do that from the point of programming ?
Any help is really appreciated.
thanks
【在 t****t 的大作中提到】
: you may set processor affinity, which makes each thread a preferred core.
: however it is not guaranteed. i don't think you can guarantee it anyway.
: on linux the command is taskset.
My program needs to run many (about 10,000+) computing tasks.
Each task's run time is very very short (< 0.1 second or even less).
At each iteration, all these tasks are run in parallel. Some of them
need to exchange some data (it is very small) and then go on.
I want to keep all 144 cores as busy as possible so that my program
can be done as fast as possible.
So, I want to associate each task with a distinct thread and schedule
threads as many as possible. Also, try yo make the workload balance
among these cores.
How can I do that from the point of programming ?
Any help is really appreciated.
thanks
【在 t****t 的大作中提到】
: you may set processor affinity, which makes each thread a preferred core.
: however it is not guaranteed. i don't think you can guarantee it anyway.
: on linux the command is taskset.
c*e
8 楼
啊，我昨天给我儿子放葫芦兄弟，当他看到葫芦娃和老爷爷被抓起来了，就大叫，看到
老爷爷逃跑成功，就鼓掌。我还以为他看懂了呢。我儿子21个月
老爷爷逃跑成功，就鼓掌。我还以为他看懂了呢。我儿子21个月
O*d
9 楼
OpenMP
l*t
10 楼
or you may try MPICH2
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