libgomp/doc/openmp-environment-variables/ompdefaultdevice.rst

   1 ..
   2   Copyright 1988-2022 Free Software Foundation, Inc.
   3   This is part of the GCC manual.
   4   For copying conditions, see the copyright.rst file.
   5
   6 .. index:: Environment Variable
   7
   8 .. _omp_default_device:
   9
  10 OMP_DEFAULT_DEVICE -- Set the device used in target regions
  11 ***********************************************************
  12
  13 Description:
  14   Set to choose the device which is used in a ``target`` region, unless the
  15   value is overridden by ``omp_set_default_device`` or by a ``device``
  16   clause.  The value shall be the nonnegative device number. If no device with
  17   the given device number exists, the code is executed on the host.  If unset,
  18   device number 0 will be used.
  19
  20 See also:
  21   :ref:`omp_get_default_device`, :ref:`omp_set_default_device`,
  22
  23 Reference:
  24   :openmp:`4.5`, Section 4.13