On Oct 27, 2012, at 10:49 AM, Mahmood Naderan wrote:
> Why openmpi uses shared memory model?
Because communicating through shared memory when sending messages between processes on the same server is far faster than going through a network stack.
> this can be disabled though by setting "--mca ^sm".
> It seems that by default openmpi uses such feature (shared memory backing files) which is strange.
> users mailing list
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