On 10/7/20 10:13 pm, David Bellot wrote:
NodeName=foobar01 CPUs=80 Boards=1 SocketsPerBoard=2 CoresPerSocket=20 ThreadsPerCore=2 RealMemory=257243 State=UNKNOWN
With this configuration Slurm is allocation a single physical core (with 2 thread units) per task. So you are using all (physical) cores.
However, if what you want is to have 1 process per thread unit (not necessarily a good idea, depending on how your code works) then I think you'd need to adjust your config to lie to Slurm and tell it it's got 40 cores per socket and 1 thread per core instead.
All the best, Chris -- Chris Samuel : http://www.csamuel.org/ : Berkeley, CA, USA
