确定可用于matlabpool的最大处理器数(MATLAB并行工具箱) [英] Determine the Maximum Number of Processors Available for matlabpool (MATLAB Parallel Toolbox)

问题描述

我目前正在用parfor循环在MATLAB中编写一些代码，以加快一些乏味的计算.

I'm currently writing some code in MATLAB that uses the parfor loop to speed up some tedious calculations.

我的问题是，代码将在远程集群上运行，并且可以在4核，8核或12核计算机上运行(我不知道提前选择哪一个)...

My issue is that the code will be run on a remote cluster, and could be run on 4-core, 8-core or 12-core machines (I won't know which one in advance)...

我基本上需要一个代码片段，以使MATLAB能够确定可在matlabpool中使用的最大内核数.如果我们将此变量称为maxcores，那么我可以继续使用

I basically need a code snippet that will allow MATLAB to determine the maximum number of cores that can be used in matlabpool. If we call this variable maxcores, I can then go ahead and use

matlabpool('open',maxcores).

，以便确保可以使用所有可用的内核.

so that I can make sure that I am using all the cores that are available to me.

推荐答案

您可以通过feature('numCores')获取计算机上的内核数，该文件没有记载，但似乎不太可能损坏. (源)

You can get the number of cores on the machine through feature('numCores'), which is undocumented but seems unlikely to break. (source)

有人声称getNumberOfComputationalThreads自R2007a起也可以使用，但不适用于我的R2012a.

Someone claims there that getNumberOfComputationalThreads also works since R2007a, but it doesn't on my R2012a.

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