[mpich-discuss] MPI_THREAD_MULTIPLE

Bobby Philip bphilip.kondekeril at gmail.com
Mon Jul 1 02:05:04 CDT 2013


Are there any studies that have been done on the effect of turning
on MPI_THREAD_MULTIPLE with the latest versions of MPICH? I have an AMR
application where halo or ghost updates require lots of small messages to
be sent/rec'd and I am currently seeing a performance hit with a vendor
specific implementation based on MPICH2 and am trying to see whether there
are any implementations out there that might deliver better performance.

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