Next: OMP_PLACES – Specifies on which CPUs the theads should be placed, Previous: OMP_NUM_THREADS – Specifies the number of threads to use, Up: OpenMP Environment Variables [Contents][Index]
OMP_PROC_BIND – Whether theads may be moved between CPUsSpecifies whether threads may be moved between processors. If set to
TRUE, OpenMP theads should not be moved; if set to FALSE
they may be moved. Alternatively, a comma separated list with the
values PRIMARY, MASTER, CLOSE and SPREAD can
be used to specify the thread affinity policy for the corresponding nesting
level. With PRIMARY and MASTER the worker threads are in the
same place partition as the primary thread. With CLOSE those are
kept close to the primary thread in contiguous place partitions. And
with SPREAD a sparse distribution
across the place partitions is used. Specifying more than one item in the
list will automatically enable nesting by default.
When undefined, OMP_PROC_BIND defaults to TRUE when
OMP_PLACES or GOMP_CPU_AFFINITY is set and FALSE otherwise.
omp_get_proc_bind – Whether theads may be moved between CPUs, GOMP_CPU_AFFINITY – Bind threads to specific CPUs,
OMP_NESTED – Nested parallel regions, OMP_PLACES – Specifies on which CPUs the theads should be placed
OpenMP specification v4.5, Section 4.4