March 13, 2020
You can control three mechanisms in ANSYS Workbench that operate in a parallelized manner:
Remote Solve Manager Design Point updates. Refer to RSM Configuration.
Parallel Part meshing: > >
Individual mesh methods (MultiZone Quad/Tri, Patch Independent Tetra, and MultiZone only): > >
For the most efficient use of machine resources, it is important that the running processes do not over-saturate the processing cores or the available memory. You must allocate processing cores to each of these mechanisms in a way that provides the most benefit for your workflow. When parallel part meshing is invoked with the default number of CPUs, it automatically uses the cores of all available CPUs with the inherent limitation of 2 gigabytes per CPU core.
Parallel Part Meshing Best Practices
Best practices include:
Know how many physical processing cores are available.
If you are using Remote Solve Manager (RSM), meshing is done serially. This option cannot be overridden.
For non-RSM Design Point updates, meshing is done serially by default. You can override this option by setting the option Number of CPUs for Parallel Part Meshing explicitly under .
If you are using more than one processor for individual meshing methods, be sure to set a balance between the two meshing options if you are using methods that support the Number of CPUs for Meshing Methods option (MultiZone Quad/Tri, Patch Independent Tetra, and MultiZone). They should be set to an explicit value greater than 0.
For example, if you are using an 8 core system, setting Number of CPUs for Parallel Part Meshing to 3 and Number of CPUs for Mesh Methods to 3 will provide a good balance. If the mesh methods that you typically use support the Number of CPUs for Meshing Methods option, setting the Number of CPUs for Parallel Part Meshing to 2 and the Number of CPUs for Meshing Methods to 4 or 5 may potentially provide more benefit.
If you are using parallel part meshing only, you can set the Number of CPUs for Parallel Part Meshing to 0. In such cases, the software uses as many cores as possible.
For Parallel Part meshing we recommend turning off hyper-threading as this may lead to degradation of parallel performance.
Note that Parallel Part meshing does not support the following mesh controls:
Mesh Match via Symmetry
Preview Surface Mesh/Preview Inflation
In this tutorial, you will learn how to do a parallel mesh using Ansys Meshing. In this video we show the configuration to customize the number of cores of your processor.
The Body of Influence option is available in the Type field if you selected a body and Use Adaptive Sizing is set to No. Using this option, you can set one body as a source of another body
The Sphere of Influence option is available in the Type field after you select an entity such as a body, face, edge, or vertex.
The Mesh Copy control enables you copy mesh from one body to another. This option can be used to reduce the mesh setup time for repetitive bodies/parts. Association to CAD is maintained after performing mesh copy.
Mesh controls are scoped only to the source anchor body. When the mesh is generated, the source anchor body is meshed and the mesh is then copied to targets.
The Pinch feature lets you remove small features (such as short edges and narrow regions) at the mesh level in order to generate better quality elements around those features.
When geometries are complex or the range of length scales of the flow is large, a triangular/tetrahedral mesh can be created with far fewer cells than the equivalent mesh consisting of quadrilateral/hexahedral elements.
The MultiZone mesh method provides automatic decomposition of geometry into mapped (structured/sweepable) regions and free (unstructured) regions.
The global Element Order option allows you to control whether meshes are to be created with midside nodes (quadratic elements) or without midside nodes (linear elements).
The CutCell meshing process involves the following approach:
Objects, material points (optional), and size functions are defined.
The initial size of the Cartesian grid is computed based on the minimum and maximum size set for the size functions.
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