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4.3 OMP_DEFAULT_DEVICE – Set the device used in target regions

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, device number 0 will be 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,

Reference:

OpenMP specification v4.5, Section 4.13