PDS/homework_1/src/v1.cpp

/**
 * \file    v1.hpp
 * \brief
 *
 * \author
 *    Christos Choutouridis AEM:8997
 *    <cchoutou@ece.auth.gr>
 */

#include "v1.hpp"

/*!
 * \fn void init_workers()
 *
 * Initialize worker settings
 */
void init_workers() {
#if defined CILK
   size_t cilk_w = __cilkrts_get_nworkers();

   if (!session.max_threads)
      session.max_threads = (session.slices) ? (session.slices) : cilk_w;
//   else if (session.max_threads < cilk_w)
//      __cilkrts_set_param("nworkers", "4");
   // else ignored by cilk

#elif defined OMP
//   omp_set_dynamic(1);
   size_t omp_w = (size_t)omp_get_max_threads();

   if (!session.max_threads) {
      session.max_threads = (session.slices) ? (session.slices) : omp_w;
//      omp_set_dynamic(1);
   }
   else if (session.max_threads < omp_w) {
//      omp_set_dynamic(0);
      omp_set_num_threads(session.max_threads);
   }
   // else ignored by omp

#elif defined PTHREADS
   size_t pth_w = std::thread::hardware_concurrency();

   if (!session.max_threads)
      session.max_threads = (session.slices) ? (session.slices) : pth_w;
#else

#endif
   if (!session.slices)
      session.slices = session.max_threads;

   openblas_set_num_threads(1); // Limit OpenBLAS to 1 thread
}