Sounds perfectly reasonable to me. Thanks for staying on top of this!
On Sep 25, 2008, at 7:18 PM, Ralph Castain wrote:
Yo all Over the last few days, we at LANL have been working with our LLNL counterparts on some OMPI/SLURM integration issues. In the course of this work, we have learned that the meaning/use of the SLURM_TASKS_PER_NODE environmental variable used by OMPI (and LAM-MPI as well as others) to extract required allocation information was changed beginning with SLURM 1.2, and the info we are seeking was shifted to SLURM_JOB_CPUS_PER_NODE. Since SLURM is now on release 1.3.7 and above, this clearly occurred some time ago. What I propose to do (per LLNL's recommendation) is modify the SLURM ras module to check for SLURM_JOB_CPUS_PER_NODE first and use that value if found - if not found, then fall back to using SLURM_TASKS_PER_NODE. This will make us fully compatible with more recent SLURM releases while retaining backward compatibility with pre- SLURM 1.2 versions (assuming anyone out there is running something that old). Given that 1.2.8 and 1.3.0 have not yet been released, we (LANL) would like to get this change into those releases. It is a minor code change (I will insert it into trunk so people can see) and easily tested on any SLURM machine. Are there any objections/comments? Ralph _______________________________________________ devel mailing list de...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/devel
-- Jeff Squyres Cisco Systems
