From "man srun"
--overlap
Allow steps to overlap each other on the CPUs. By default steps do not share CPUs with other parallel steps.
Occasionally, the resources allocated to the shell/terminal on the compute node will interfere when people try to interactively test parallelized workloads (eg. mpirun) because some resources are dedicated to the interactive shell. Adding this option as a default setting probably makes sense.
From "man srun"
Occasionally, the resources allocated to the shell/terminal on the compute node will interfere when people try to interactively test parallelized workloads (eg. mpirun) because some resources are dedicated to the interactive shell. Adding this option as a default setting probably makes sense.