[OMPI users] MPI test program

[Mahmood Naderan]

Hi,
Is there any small benchmark for performance measurements? I mean a test
which utilize the number of cpus given to the mp
​i for comparison. I want to compare two kernel versions on one system only
and not across different platforms.


I know Intel MPI benchmark, but I would like to know if there is another
option. Is MTT suitable for that?

Any comment?


Regards,​

Mahmood

[Gilles Gouaillardet]

Mahmood,



A well established alternative to Intel's IMB is the OSU micro benchmarks

from Ohio State University http://mvapich.cse.ohio-state.edu/benchmarks/


MTT can be used to automatically build and test Open MPI.

MTT itself only contains a few trivial sets, and use external test suites.


Note IMB always MPI_Init_thread(MPI_THREAD_MULTIPLE) even when not
required by the benchmark.

That is no more a performance issue on recent Open MPI versions, but on
older releases built with --enable-mpi-thread-multiple,

that disabled the OpenIB btl (e.g. native Infiniband) in favor of
(higher latency / lower bandwidth) IPoIB.


Cheers,


Gilles

Post by Mahmood Naderan
Hi,
Is there any small benchmark for performance measurements? I mean a
test which utilize the number of cpus given to the mp
​i for comparison. I want to compare two kernel versions on one system
only and not across different platforms.
I know Intel MPI benchmark, but I would like to know if there is
another option. Is MTT suitable for that?
Any comment?
Regards,​
Mahmood
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