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3.1.1 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 – Specifies the number of threads to use, omp_get_num_threads – Size of the active team, omp_get_max_threads – Maximum number of threads of parallel region

Reference:

OpenMP specification v4.5, Section 3.2.1.