Can a second user allocate anything on node fl01 after the first user requests their 12 tasks per node? If not, then it looks like tasks are being tied to physical cores, and not a hyperthreaded version of a core.
-- Mike Renfro, PhD / HPC Systems Administrator, Information Technology Services 931 372-3601 / Tennessee Tech University > On Mar 27, 2019, at 3:00 PM, Anne M. Hammond <hamm...@txcorp.com> wrote: > > We are just getting started with slurm here. We have > > slurm 18.08.6-2 > > /etc/slurm/slurm.conf: > > NodeName=fl[01-04] CPUs=24 RealMemory=40000 Sockets=2 CoresPerSocket=6 > ThreadsPerCore=2 State=UNKNOWN > > > Cannot allocate ntasks-per-node: > > [hammond@hydrogen VSim-9.0]$ srun -N 1 --ntasks-per-node=24 --pty bash > srun: error: CPU count per node can not be satisfied > srun: error: Unable to allocate resources: Requested node configuration is > not available > srun: Force Terminated job 46 > > Can allocate 12 ntasks-per-node: > [hammond@hydrogen VSim-9.0]$ srun -N 1 --ntasks-per-node=12 --pty bash > [hammond@fl01 tmp]$ > > Thank you for any pointers. > > Anne
