hm, I think this sounds like a different issue, somebody who is more invested
in the ROMIO Open MPI work should probably have a look.
Regarding compiling Open MPI with Lustre support for ROMIO, I cannot test it
right now for various reasons, but if I recall correctly the trick was to
provide th
Hi Edgar,
Thanks for this - good to know that ompio is an option, despite the
reference to potential performance issues.
I'm using openmpi 4.0.5 with ucx 1.9.0 and see the hdf5 1.10.7 test
"testphdf5" timeout (with the timeout set to an hour) using romio. Is it a
known issue there, please?
this is in theory still correct, the default MPI I/O library used by Open MPI
on Lustre file systems is ROMIO in all release versions. That being said, ompio
does have support for Lustre as well starting from the 2.1 series, so you can
use that as well. The main reason that we did not switch to
Hi all,
I'm confused about how openmpi supports mpi-io on Lustre these days, and
am hoping that someone can help.
Back in the openmpi 2.0.0 release notes, it said that OMPIO is the default
MPI-IO implementation on everything apart from Lustre, where ROMIO is
used. Those release notes are pre
