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Am 25.04.2017 um 17:27 schrieb Reuti:
> Hi,
>
> In case Open MPI is moved to a different location than it was installed into
> initially, one has to export OPAL_PREFIX. While checking for the availability
> of the GridEngine integration, I exported OPAL_PREFIX but obviously with a
> typo and came to the conclusion that it's not available, as I did a:
>
> $ export PATH=…
> $ export LD_LIBRARY_PATH=…
> $ export OPAL_PREFIX=anything_with_a_typo_or_nothing_at_all
> $ ompi_info | grep grid
>
> There was no indication, that `ompi_info` listed only part of the usual
> output because of the faulty OPAL_PREFIX. When I recheck now, even the exit
> code of `ompi_info` is still 0 in this case.
>
> I suggest to include some tests in `ompi_info` whether the set OPAL_PREFIX
> makes sense. For now it lists just the set value in the "Prefix:" line and
> that's all.
>
> Expected behavior: If `ompi_info` can't find any modules in the specified
> place, an appropriate output should go to stderr and the exit code set to 1.
No one commented on this. As the purpose of `ompi_info` is to check the
installation (according to its man page), something should really be improved
here.
It's even possible to have both a 2.0.2 and 2.1.0 installed but only one in the
$PATH of course, which may lead to:
$ ~/local/openmpi-2.0.2_gcc-4.7.2_shared/bin/ompi_info -V
Open MPI v2.0.2
Looks fine, but getting the full output:
$ ~/local/openmpi-2.0.2_gcc-4.7.2_shared/bin/ompi_info
Package: Open MPI reuti Distribution
Open MPI: 2.1.0
shows a different Open MPI version as `mpiexec` and alike are in the actual set
$PATH (not 2.0.2) (the former seems to be a constant in `ompi_info`, while the
latter comes from a loaded library). Having a static version it's different:
$ ~/local/openmpi-2.0.2_gcc-4.7.2_static/bin/ompi_info -V
Open MPI v2.0.2
$ ~/local/openmpi-2.0.2_gcc-4.7.2_static/bin/ompi_info
Package: Open MPI reuti Distribution
Open MPI: 2.0.2
- -- Reuti
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