[OMPI users] Set oversubscribe as default

Hello, I used to have oversubscribe set a default using the environment variable OMPI_MCA_rmaps_base_oversubscribe. However, since recently, probably since 4.0.0, that doesn't seem to work anymore. % echo $OMPI_MCA_rmaps_base_oversubscribe 1 % mpirun --version mpirun (Open MPI) 4.0.0 Report

Re: [OMPI users] Set oversubscribe as default

Florian, this issue has already been addressed and will be part of future 4.x releases. https://github.com/open-mpi/ompi/pull/6139 Best, Aurelien > On Feb 15, 2019, at 11:52, Florian Lindner wrote: > > Hello, > > I used to have oversubscribe set

[OMPI users] HDF5 1.10.4 "make check" problems w/OpenMPI 3.1.3

Hi there, Honestly don’t know which piece of this puzzle to look at or how to get more information for troubleshooting. I successfully built HDF5 1.10.4 with RHEL system GCC 4.8.5 and OpenMPI 3.1.3. Running the “make check” in HDF5 is failing at the below point; I am using a value of

Re: [OMPI users] HDF5 1.10.4 "make check" problems w/OpenMPI 3.1.3

Ryan, Can you export OMPI_MCA_io=^ompio and try again after you made sure this environment variable is passed by srun to the MPI tasks ? We have identified and fixed several issues specific to the (default) ompio component, so that could be a valid workaround until the next release. Cheers,