Ansys Meshing - Parallel Meshing
Written by cfd.ninja
Parallel meshing splits the work across several CPU cores, which matters once a model reaches millions of cells and the mesh takes longer to build than the solution takes to converge.
The gain is not linear. Meshing algorithms have to keep the partitions consistent with each other, so doubling the cores does not halve the time, and the benefit is largest on tetrahedral meshes of large models.
Memory is the practical limit more often than the core count. Each process needs its share of RAM, so on a machine with modest memory it is usually better to run fewer processes than to use every core available.
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