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2.30 omp_set_num_threads – Set upper team size limit

Description:

Specifies the number of threads used by default in subsequent parallel sections, if those do not specify a num_threads clause. The argument of omp_set_num_threads shall be a positive integer.

C/C++:
Prototype:void omp_set_num_threads(int num_threads);
Fortran:
Interface:subroutine omp_set_num_threads(num_threads)
integer, intent(in) :: num_threads
See also:

OMP_NUM_THREADS, omp_get_num_threads, omp_get_max_threads

Reference:

OpenMP specification v4.5, Section 3.2.1.