On 9/27/2010 9:01 AM, Gabriele Fatigati wrote:
> if OpenMPI is numa-compiled, memory affinity is enabled by default?
> Because I didn't find memory affinity alone ( similar) parameter to
> set at 1.
The FAQ http://www.open-mpi.org/faq/?category=tuning#using-paffinity
has a useful introduction to affinity. It's available in a default
build, but not enabled by default.
If you mean something other than this, explanation is needed as part of
taskset() or numactl() might be relevant, if you require more detailed