Michael,

ROMIO is the default in the 1.8 series
you can run
ompi_info --all | grep io | grep priority
ROMIO priority should be 20 and ompio priority should be 10.

Cheers,

Gilles

On Thursday, July 23, 2015, Schlottke-Lakemper, Michael <
m.schlottke-lakem...@aia.rwth-aachen.de> wrote:

> Hi Gilles,
>
> > are you running 1.8.7 or master ?
> 1.8.7. We recently upgraded our cluster installation from OpenSUSE
> 11.3/OpenMPI 1.6.5 to OpenSUSE 12.3/OpenMPI 1.8.7. Before the upgrade, we
> did not encounter this problem.
>
> > if not default, which io module are you running ?
> > (default is ROMIO with 1.8 but ompio with master)
> We did not specify anything at configure time, so I guess we are using the
> default. But if you tell me how, I can check.
>
> > by any chance, could you post a simple program that evidences this issue
> ?
> As of this time, unfortunately no. We only experience this issue
> intermittently, and only when running our suite of regression tests. It
> *seems* to occur only with a handful of the ~40 tests, but if we run only a
> subset of the tests (instead of all of them), it may not occur at all,
> depending on the subset. I tried using a MWE program but could not
> reproduce the issue with it.
>
> Sorry for not being more helpful, but we are also scratching our heads
> trying to understand what is going on and I just thought that maybe someone
> here has had a similar experience in the past (or might give us some
> pointers at what to look at).
>
> Regards,
>
> Michael
>
>

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