shmem_minfree

Use the shmem_minfree attribute to reserve some portion of the /tmp file system for non-MPI use.

For example, if /tmp is 1 Gbyte and shmem_minfree is set to 0.2, any time free space on /tmp drops below 200 Mbytes (1 Gbyte * 0.2), programs using the MPI shared memory protocol will not be allowed to run.

[node0]
P(part1):: set shmem_minfree=0.2

shmem_minfree must be set to a value between 0.0 and 1.0. When shmem_minfree is unset, it defaults to 0.1.

This attribute can be set on both nodes and partitions. If both are set, the node's shmem_minfree attribute overrides the partition's shmem_minfree attribute.