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Troubleshooting

Exception: Unknown OpenCASCADE entity of dimension X with tag Y

This error usually occurs if the geometry is invalid. Most of the times this is due to user error but it might also happen due to bugs. Please check the following possible mistakes. If not, reach out for support.

  1. Two geomerty operations operating on the same instead of different objects after copy paste.

  2. Assinging two boundary conditions to the same object

  3. Assinging boundary conditions or doing operations on objects that have been removed after boolean operations.

ValueError: Edge cannot be formed by the same node.

This error indicates a problem with the mesh generated by GMSH and the processing in EMerge. Please reach out via Github, Discord or email to get help with this error. Please also include your EMerge version and script for better help.

AttributeError: ...

The likely cause is a version mismatch of the script you run and the version of EMerge it was written for. Make sure to always get the latest demo scripts from the Github page. From EMerge version 1.0.0 forward, each Demo script will have a hard coded version check to warn for potential backwards compatibility issues. 

Solving problems runs slower (same speed) on multiple jobs.

Running multiple jobs in prallel is not guaranteed to speed up due to the fact that direct linear solvers are memory bound. Reduce the maximum number of simultaneous jobs and make sure UMFPACK is not used in a multi-threaded envornment (multi-processing only). Check the manual for more details.

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