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High-order unstructured mesh representation and discrete function spaces

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There's still a bunch of warnings about SVM memory like ``` :131: InconsistentOpenCLQueueWarning: Array has different queue from backing SVM memory. This may lead to the array getting deallocated sooner...

Coreform Cubit can write mesh files in NASTRAN format, I have created a simple translation tool to go from NASTRAN to GMSH, which meshmode can already read, but it would...

The tests `_ test_from_fd_transfer[-P^4-False-blob2d-order4-fdrake_mesh_pars4-2] _` is failing. It's currently marked as an `xfail` to keep the CI going. The latest failed CI run is (March 2024) https://github.com/inducer/meshmode/actions/runs/8147251267/job/22267538762 and the first...

#347 could be used to do the extraction.

enhancement

These are part of what was causing the fallback warnings while compiling the Y3 prediction case.

Sample CI failure: https://gitlab.tiker.net/inducer/meshmode/-/jobs/533461 Similar failure in grudge: https://gitlab.tiker.net/inducer/grudge/-/jobs/533485 Sample traceback: ``` Traceback (most recent call last): File "", line 198, in _run_module_as_main File "", line 88, in _run_code File...

Now accepts a list of dicts (one per mesh group), where each dict maps a tag to a numpy array of element/face indices that belong to that tag. This removes...

Weakens the mesh check a bit to fix #358. Also adds an object identity check to the mesh `__eq__` so it doesn't need to compare all the attributes if the...