Simple linear-solver optimize #283
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added 28 commits
June 3, 2024 16:53
…. However, setting partial assembly to true is slightly slower
recent fix on main
…er as a precon) and apparent smoother relax weight not functioning as intended
…ts and reduced rel tol
…ol tol and replacing ref soln. numerical-integ defaults to false now
…ved a leftover ref sol copy line
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Exposed solver options of BoomerAMG and HYPRE smoother pre-conditioners, with an MFEM interface, to TPS. All options used should be gpu-friendly. Only a 10-15% reduction in per-step wall-time is observed for hex-mesh torch test case. For HYPRE options, see
https://hypre.readthedocs.io/en/latest/solvers-boomeramg.html
and
https://hypre.readthedocs.io/en/latest/api-sol-parcsr.html
for further details. Note that not all HYPRE options have an MFEM interface, see: mfem/linalg/hypre.hpp. The AMG pre-conditioner options
have been observed to change the test solutions outside of the specified linear solver tol. Additionally, numerical-integ defaults to false now. Low-Mach refn soln's updated accordingly.