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c++ Programming Glossary: omp_num_threadsWhy openmp program only runs in one thread http://stackoverflow.com/questions/10203902/why-openmp-program-only-runs-in-one-thread functions are running at thread 0. I tried to modify the OMP_NUM_THREADS. But it has no effect also. I had everything the same as the..
http://stackoverflow.com/questions/10850155/openmp-for-schedule n i omp_get_thread_num return 0 icc openmp o dyn.x dyn.c OMP_NUM_THREADS 8 . dyn.x sort 1 iter 0 tid 2 1 iter 1 tid 0 1 iter 2 tid 7..
http://stackoverflow.com/questions/10939158/openmp-performance and unblocking When I strace the same implementation with OMP_NUM_THREADS set to 0 I get none of this at all. For some comparison the..
OpenMP set_num_threads() is not working http://stackoverflow.com/questions/11095309/openmp-set-num-threads-is-not-working is used to override the value of the environment variable OMP_NUM_THREADS and they both control the upper limit of the size of the thread.. OpenMP would spawn for all parallel regions in the case of OMP_NUM_THREADS or for any consequent parallel region after a call to omp_set_num_threads..
OpenMP: What is the benefit of nesting parallelizations? http://stackoverflow.com/questions/4317551/openmp-what-is-the-benefit-of-nesting-parallelizations for OpenMP will create the number of threads as defined in OMP_NUM_THREADS . So if 2 level parallelism the total number of threads would.. the total number of threads would be N^2 where N OMP_NUM_THREADS . Such nested parallelism will cause oversubscription i.e. the..
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