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Add openblas_set_num_threads_local() and use of blas_omp_threads_local in OMP parallel regions

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Martin Kroeker 2024-01-13 20:02:43 +01:00 committed by GitHub
parent f9b2d7f225
commit 2e2e538b7c
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2 changed files with 5 additions and 3 deletions
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1
cblas.h
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@ -12,6 +12,7 @@ extern "C" {
/*Set the number of threads on runtime.*/ /*Set the number of threads on runtime.*/
void openblas_set_num_threads(int num_threads); void openblas_set_num_threads(int num_threads);
void goto_set_num_threads(int num_threads); void goto_set_num_threads(int num_threads);
int openblas_set_num_threads_local(int num_threads);
/*Get the number of threads on runtime.*/ /*Get the number of threads on runtime.*/
int openblas_get_num_threads(void); int openblas_get_num_threads(void);

7
common_thread.h
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@ -137,19 +137,20 @@ typedef struct blas_queue {
extern int blas_server_avail; extern int blas_server_avail;
extern int blas_omp_number_max; extern int blas_omp_number_max;
extern int blas_omp_threads_local;
static __inline int num_cpu_avail(int level) { static __inline int num_cpu_avail(int level) {
#ifdef USE_OPENMP #ifdef USE_OPENMP
int openmp_nthreads; int openmp_nthreads;
openmp_nthreads=omp_get_max_threads(); openmp_nthreads=omp_get_max_threads();
if (omp_in_parallel()) openmp_nthreads = blas_omp_threads_local;
#endif #endif
#ifndef USE_OPENMP #ifndef USE_OPENMP
if (blas_cpu_number == 1 if (blas_cpu_number == 1
#endif #else
#ifdef USE_OPENMP if (openmp_nthreads == 1
if (openmp_nthreads == 1 || omp_in_parallel()
#endif #endif
) return 1; ) return 1;