Our site effectively runs all slurm jobs with sbatch --export=NONE ... and creates the necessary environment inside the batch script. After upgading to 14.11, OpenMPI mpirun jobs hit
2015-04-15T08:53:54+08:00 nod0138 slurmstepd[3122]: error: execve(): orted: No such file or directory The issue appears to be that, as of 14.11, srun now recognizes --export=NONE and, more importantly, the SLURM_EXPORT_ENV=NONE set in the jobs environment if you submit with sbatch --export=NONE . The simple workaround is to unset SLURM_EXPORT_ENV before mpirun. Possibly mpirun should add --export=ALL to its srun commands. Cheers David
