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This commit is contained in:
André R. Brodtkorb 2015-10-20 09:30:06 +02:00
parent a208f793d5
commit d43b88af76
1 changed files with 3 additions and 2 deletions
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5
examples/flow.cpp
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@ -156,14 +156,15 @@ try
#ifdef _OPENMP
if (!getenv("OMP_NUM_THREADS")) {
//Default to max(4,#cores) threads,
//not number of cores (unless ENV(OMP_NUM_THREADS) is defined)
//Default to at most 4 threads, regardless of
//number of cores (unless ENV(OMP_NUM_THREADS) is defined)
int num_cores = omp_get_num_procs();
int num_threads = std::min(4, num_cores);
omp_set_num_threads(num_threads);
}
#pragma omp parallel
if (omp_get_thread_num() == 0){
//opm_get_num_threads() only works as expected within a parallel region.
std::cout << "OpenMP using " << omp_get_num_threads() << " threads." << std::endl;
}
#endif