Closed franzpoeschel closed 1 year ago
https://github.com/open-mpi/ompi/issues/7795
Ideally, we would deactivate chunking by default when detecting use of OpenMPI 4.* + ROMIO, but the only way I found to figure this out is by environment variable:
$ mpirun --mca io ompio -n 1 env | grep 'OMPI_MCA_io' OMPI_MCA_io=ompio $ mpirun --mca io romio -n 1 env | grep 'OMPI_MCA_io' OMPI_MCA_io=romio
Imo, trying to parse this env variable is not worth the effort for a bug that only occurs when not using defaults.
X-ref: https://github.com/open-mpi/ompi/issues/11715
https://github.com/open-mpi/ompi/issues/7795
Ideally, we would deactivate chunking by default when detecting use of OpenMPI 4.* + ROMIO, but the only way I found to figure this out is by environment variable:
Imo, trying to parse this env variable is not worth the effort for a bug that only occurs when not using defaults.
X-ref: https://github.com/open-mpi/ompi/issues/11715