CPU load meshing

Rec · January 13, 2020, 11:03

Hi everyone!

I am doing a hydrodynamic calculation in ANSYS CFX 17.2, on CPU AMD Ryzen Threadripper 1950X 14 core of 16.
Mesh - Advanced - Number of CPU Parralel part Meshing = 14
When analyzing the calculation schedule, it turned out that when building a grid, the processor load is small and the build time is long, how to fix it?
In manual mode, I get CPU - 18% and GPU - 10 %

Thank you.

ghorrocks · January 19, 2020, 03:20

The multiprocessor meshing algorithm is not as refined as the solver multiprocessor algorithm. Large meshes will have lots of setup and pack up pauses and writing to disk.

All I can recommend is to try a few meshing and multiprocessor options with a benchmark case and see what works best for you.

January 19, 2020, 03:20		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	The multiprocessor meshing algorithm is not as refined as the solver multiprocessor algorithm. Large meshes will have lots of setup and pack up pauses and writing to disk. All I can recommend is to try a few meshing and multiprocessor options with a benchmark case and see what works best for you. Rec likes this. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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