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3.6.3 omp_get_default_device – Get the default device for target regions ¶

Description:

Get the value of the default-device-var ICV, which is used for target regions without a device clause. The value is either a nonnegative device number, omp_initial_device or omp_invalid_device. Note that for the host, the ICV can have two values: either the value of the named constant omp_initial_device or the value returned by the omp_get_num_devices routine.

The effect of running this routine in a target region is unspecified.

C/C++:

Prototype:

int omp_get_default_device(void);

Fortran:

Interface:

integer function omp_get_default_device()

See also:

OMP_DEFAULT_DEVICE – Set the device used in target regions, omp_set_default_device – Set the default device for target regions, omp_get_initial_device – Return device number of initial device

Reference:

OpenMP specification v4.5, Section 3.2.30.