Gilles,
a short update about the patched version (3.0.0). After we updated from CentOS
7.3 to 7.4, this version build with all versions of all compilers stopped to
work with message like:
$ a.out: symbol lookup error:
/opt/MPI/openmpi-3.0.0p/linux/intel_17.0.5.239/lib/openmpi/mca_mpool_memkind.so:
Good news everyone!
PR #4331 works, I was able to apply it on 3.0.0-release (two hunks succeeded
with a offset, and the line 65 in openmpi-3.0.0/ompi/runtime/ompi_mpi_params.c
has to be changed
> < bool ompi_mpi_yield_when_idle = true;
> > bool ompi_mpi_yield_when_idle = false;
prior pathing to ma
Paul,
Sorry for the typo.
The patch was developed on the master branch.
Note v1.10 is no more supported, and since passive wait is a new feature, it
would start at v3.1 or later.
That being said, if you are kind of stucked with 1.10.7, i can try to craft a
one off patch in order to help
Chee
Hi Gilles,
Thank you for your message and quick path!
You likely mean (instead of links in your eMail below)
https://github.com/open-mpi/ompi/pull/4331 and
https://github.com/open-mpi/ompi/pull/4331.patch
for your PR #4331 (note '4331' instead of '4431' :-)
I was not able to path 1.10.7 release
Paul,
i made PR #4331 https://github.com/open-mpi/ompi/pull/4431 in order to
implement this.
in order to enable passive wait, you simply need to
mpirun --mca mpi_poll_when_idle true ...
fwiw, when you use mpi_yield_when_idle, Open MPI does (highly
oversimplified)
for (...) sched_yield()
Dear Jeff,
Dear All,
we know about *mpi_yield_when_idle* parameter [1]. We read [2]. You're right,
> if an MPI application is waiting a long time for messages,
> perhaps its message passing algorithm should be re-designed
... but we cannot spur the ParaView/VTK developer to rewrite their software
