[mvapich-discuss] collectives fail under mvapich2-1.0 (fwd)

[wei huang]

Hi Ed,

Thanks for letting us know the problem.

We wonder on how many processes you carried out the tests? Are you using
all 8 processors when running coll tests and SKaMPI tests?

Thanks.

Regards,
Wei Huang

774 Dreese Lab, 2015 Neil Ave,
Dept. of Computer Science and Engineering
Ohio State University
OH 43210
Tel: (614)292-8501


---------- Forwarded message ----------

> Hello,
>
> I'm new to the list.  If a similar issue has already been
> addressed, my apologies (and can you point me to an archive).
>
> I'm trying to confirm my mvapich2-1.0 installation by running
> SKaMPI (pt2pt, coll, onesided), Intel MPI Benchmark (MPI1 only)
> and the mvapich2 coll tests.
>
> Running the mvapich2 coll tests in alphabetical order, I find
> that it stalls on "icallgather," that is, no output after
> several minutes and the next test is not run.  I also experience
> stalling with the coll and onesided SKaMPI tests.  The IMB-MPI1
> tests pass however.
>
> Mvapich2-1.0 was compiled using make.mvapich2.ofa (gcc 4.2.0).
> The tests were run under Torque using mpiexec-0.81 between two
> nodes (dual-socket, dual-core Opterons).
>
>    for test in allgather2 allgather3 ...; do
>      mpiexec $test >out 2>err
>    done
>
> No problem, when run within a node.
>
> Any ideas?
>
> --
> Ed[mund [Sumbar]]
> AICT Research Support, Univ of Alberta
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