projects / thirdparty / gcc.git / blame
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|---|---|---|
| c63539ff ML |
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_max_active_levels: | |
| 9 | ||
| 10 | OMP_MAX_ACTIVE_LEVELS -- Set the maximum number of nested parallel regions | |
| 11 | ************************************************************************** | |
| 12 | ||
| 13 | Description: | |
| 14 | Specifies the initial value for the maximum number of nested parallel | |
| 15 | regions. The value of this variable shall be a positive integer. | |
| 16 | If undefined, then if :envvar:`OMP_NESTED` is defined and set to true, or | |
| 17 | if :envvar:`OMP_NUM_THREADS` or :envvar:`OMP_PROC_BIND` are defined and set to | |
| 18 | a list with more than one item, the maximum number of nested parallel | |
| 19 | regions will be initialized to the largest number supported, otherwise | |
| 20 | it will be set to one. | |
| 21 | ||
| 22 | See also: | |
| 23 | :ref:`omp_set_max_active_levels`, :ref:`OMP_NESTED` | |
| 24 | ||
| 25 | Reference: | |
| 3ed1b4ce | 26 | :openmp:`4.5`, Section 4.9 |