[OMPI devel] RFC: set MCA param mpi_add_procs_cutoff default to 32

2016-02-03 Thread Jeff Squyres (jsquyres)
WHAT: Decrease default value of mpi_add_procs_cutoff from 1024 to 32 WHY: The "partial add procs" behavior is supposed to be a key feature of v2.0.0 WHERE: ompi/mpi/runtime/ompi_mpi_params.c TIMEOUT: Next Tuesday teleconf (9 Feb 2016) MORE DETAIL: The mpi_add_procs_cutoff MCA param controls th

[OMPI devel] orted hangs on SLES12 when running 80 ranks per node

2016-02-03 Thread Cabral, Matias A
Hi, I have hit an issue in which orted hangs during the finalization of a job. This is reproduced by running 80 ranks per node (yes, oversubscribed) on a 4 nodes cluster that runs SLES12 with OMPI 1.10.2 (I also see it with 1.10.0). I found that it is independent of the binary used (I used a ve