On Saturday 25 November 2006 15:31, shap...@isp.nsc.ru wrote: > Hello, > i cant figure out, is there a way with open-mpi to bind all > threads on a given node to a specified subset of CPUs. > For example, on a multi-socket multi-core machine, i want to use > only a single core on each CPU. > Thank You.
This might be a bit naive but, if you spawn two procs on a dual core dual socket system then the linux kernel should automagically schedule them this way. I actually think this applies to most of the situations discussed in this thread. Explicitly assigning processes to cores may actually get it wrong more often than the normal linux scheduler. /Peter (who may be putting a bit too much faith in the linux scheduler...)
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