diff options
Diffstat (limited to 'openmp/runtime/src/z_Linux_util.cpp')
| -rw-r--r-- | openmp/runtime/src/z_Linux_util.cpp | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/openmp/runtime/src/z_Linux_util.cpp b/openmp/runtime/src/z_Linux_util.cpp index a0d1639c53e..914275a44e3 100644 --- a/openmp/runtime/src/z_Linux_util.cpp +++ b/openmp/runtime/src/z_Linux_util.cpp @@ -1280,11 +1280,22 @@ static void __kmp_atfork_child(void) { ++__kmp_fork_count; -#if KMP_AFFINITY_SUPPORTED && KMP_OS_LINUX +#if KMP_AFFINITY_SUPPORTED +#if KMP_OS_LINUX // reset the affinity in the child to the initial thread // affinity in the parent kmp_set_thread_affinity_mask_initial(); #endif + // Set default not to bind threads tightly in the child (we’re expecting + // over-subscription after the fork and this can improve things for + // scripting languages that use OpenMP inside process-parallel code). + __kmp_affinity_type = affinity_none; +#if OMP_40_ENABLED + if (__kmp_nested_proc_bind.bind_types != NULL) { + __kmp_nested_proc_bind.bind_types[0] = proc_bind_false; + } +#endif // OMP_40_ENABLED +#endif // KMP_AFFINITY_SUPPORTED __kmp_init_runtime = FALSE; #if KMP_USE_MONITOR |
