[gmx-users] Performance difference between MPI ranks and OpenMP

[Ebert Maximilian]

Hi list,

I have another question regarding performance. Is there any performance difference if I start a process on a 8 CPU machine with 8 MPI ranks and 1 OpenMP or 4 MPI ranks an 2 OpenMP? Both should use the 8 CPUs right?

Thank you very much,

Max