[Beowulf] mpi_comm_create scaling issue
charliep at cs.earlham.edu
Thu Sep 5 10:08:39 PDT 2013
On Sep 5, 2013, at 11:56 AM, xingqiu yuan <xingqiuyuan at gmail.com> wrote:
> Hi ALL
> MPI_COMM_CREATE takes a substantial amount of time on large communicators, any good ideas to reduce the time consuming on large communicators?
Which MPI binding you use can make a difference too, try another one (or two) and see how the performance compares on that call (and other user created communicator calls perform).
More information about the Beowulf