Affinity Mask - Windows API

Windows API

Thread affinity in Microsoft Windows can be specified with the SetThreadAffinityMask function. Forcing of each OpenMP thread to distinctive cores in Windows can be accomplished by means of the following C code:

#include #include // Set OpenMP thread affinity void set_thread_affinity { #pragma omp parallel default(shared) { DWORD_PTR mask = (1 << omp_get_thread_num); SetThreadAffinityMask( GetCurrentThread, mask ); } }

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