---

4.6 OMP_DEFAULT_DEVICE – Set the device used in target regions ¶

ICV: default-device-var

Scope: data environment

Description:

Set to choose the device which is used in a target region, unless the value is overridden by omp_set_default_device or by a device clause. The value shall be the nonnegative device number. If no device with the given device number exists, the code is executed on the host. If unset, OMP_TARGET_OFFLOAD is mandatory and no non-host devices are available, it is set to omp_invalid_device. Otherwise, if unset, device number 0 is used.

See also:

omp_get_default_device – Get the default device for target regions, omp_set_default_device – Set the default device for target regions, OMP_TARGET_OFFLOAD – Controls offloading behavior

Reference:

OpenMP specification v5.2, Section 21.2.7