Improvements in petsc usage #379
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…e minres and cg failed
…ed (need for test_wasserstein), flux_reduced now covered by ksp. some tricks are added to avoid converting the matrices from scipy to petsc several time
…the matirx and rhs seperately. In this way we can avoid forming the schur complment. Removed the dependency of petsc in wasserstein
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I included some functions to buffer the assembling phase of the schur complement for non PETSCs solvers. |
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Is it now possible to merge the code? |
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The formulation "flux_reduced" for the solution of linear systems in the wasserstein.py script is now covered with ksp solvers.
Tuning of hypre preconditioner is added for 3d case.
We can now pass extra ksp option using the dict. "petsc_options" in "linear_solver_options": .
Using petsc matrices and routined the assembly of the schur complement does not required to convert from scipy to petsc several time.