[slurm-dev] ntasks-per-node makes openmpi fail

[Sefa Arslan]

Hi,
In order to diistribute mpi processes uniformly (in terms of number of 
cores)  over the nodes,  our users uses --ntasks-per-node parameter in 
their jobs.. Processes are distributed uniformly, but openmpi jobs 
fails.. When users use -n Instead of --ntasks-per-node, jobs are run 
properly but the distribution of cores are not uniform in this case.

We use openmpi-1.6.5 and slurm 13.12.0.. Is there a know bug with this 
releases with this versions or probably there is a misconfiguration / 
compilation?

Thanks a lot..

Sefa Arslan