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Old   January 13, 2020, 11:03
Default CPU load meshing
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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.
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File Type: jpg CPU-Mesh.jpg (57.9 KB, 15 views)
File Type: jpg GPU-Mesh.jpg (63.1 KB, 13 views)
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Old   January 19, 2020, 03:20
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Glenn Horrocks
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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.
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