Hello all. I've just upgraded from Debian 8 to Debian 9, and that upgraded slurm from 14.03 to 16.05.
But now some MPI jobs are no more really parallel if run via srun, but work OK if run via mpirun. The problem seems that srun launches N threads with mpi_world_size=1 (so every process thinks it's the only one and all threads work on the same dataset), while mpirun launches one thread with mpi_world_size=N . Did I miss something? Tks. -- Diego Zuccato Servizi Informatici Dip. di Fisica e Astronomia (DIFA) - Universitￜ di Bologna V.le Berti-Pichat 6/2 - 40127 Bologna - Italy tel.: +39 051 20 95786 mail: [email protected]
