#1964: Binary neutron star sample has poor OpenMP parallelization -----------------------------------+---------------------------------------- Reporter: anonymous | Owner: Type: enhancement | Status: new Priority: unset | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: NsNs | -----------------------------------+---------------------------------------- When running the sample from the ETK/gallery page the number of OpenMP threads seems to be limited to 2, showing only 200% in top, although 16 OMP threads were used.
Other param files from /par go way beyond 1000%, showing that more threads are fully used.
Could it be that there is a omp_set_num_threads(2) somewhere in the hydro code?
http://einsteintoolkit.org/about/gallery/NsNsToHMNS/
Creating 1 MPI process per core fixes the issue, obviously, and the CPU is fully utilized