Martyn? Why are you saying SLURM_TASKS_PER_NODE might not be present? It sounds to me like something is wrong in your Slurm environment - I really believe that this envar is always supposed to be there.
> On Mar 15, 2021, at 4:20 AM, Peter Kjellström <c...@nsc.liu.se> wrote: > > On Fri, 12 Mar 2021 22:19:09 +0000 > Ralph Castain via devel <devel@lists.open-mpi.org> wrote: > >> Why would it not be set? AFAICT, Slurm is supposed to always set that >> envar, or so we've been told. > > Maybe confusion on the exact name? > > AFAIK slurm always sets SLURM_TASKS_PER_NODE but only sets > SLURM_NTASKS_PER_NODE (almost same name) when --ntasks-per-node is > given. > > /Peter K
