OMP_DISPLAY_AFFINITY (GNU libgomp)

### 4.4 `OMP_DISPLAY_AFFINITY` – Display thread affinity information ¶

ICV: display-affinity-var
Scope: global
Description:

  If set to `FALSE` or if unset, affinity displaying is disabled. If set to `TRUE`, the runtime displays affinity information about OpenMP threads in a parallel region upon entering the region and every time any change occurs.

See also:

  `OMP_AFFINITY_FORMAT` – Set the format string used for affinity display

Reference:

  OpenMP specification v5.0, Section 6.13