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ArthurRatz
Black Belt
67 Views

What is the purpose fo using -rr and -grr round robin options of mpiexec utility ?

Dear Collegues, I've got a question for you : what is the purpose fo using -rr and -grr round robin options of mpiexec utility ?

Thanks in advance.

Cheers, Arthur.

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2 Replies
Artem_R_Intel1
Employee
67 Views

Hi Arthur,

According to the Intel® MPI Library for Linux* OS Reference Manual:

-perhost <# of processes >, -ppn <# of processes >, or -grr <# of processes>
Use this option to place the indicated number of consecutive MPI processes on every host in the group using round robin scheduling. See the I_MPI_PERHOST environment variable for more details.
-rr
Use this option to place consecutive MPI processes on different hosts using the round robin scheduling. This option is equivalent to -perhost 1. See the I_MPI_PERHOST environment variable for more details.

ArthurRatz
Black Belt
67 Views

Thanks for your reply.

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