Comments (8)
wence-
commented on July 29, 2024
The former goes through petsc snes, which uses gmres by default the latter, via the op2 wrapper around petsc ksp which uses cg by default.
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funsim
commented on July 29, 2024
I don't think using CG by default is a good idea: it assumes that the left hand side of the linear system is symmetric.
Can I suggest that we use GMRES as default solver with both interface types?
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wence-
commented on July 29, 2024
Turns out there were slightly deeper problems. But I will push branches fixing them, and switching default solver in pyop2 to gmres. Note also that the preconditioners must be the same to get the same result.
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wence-
commented on July 29, 2024
I believe I've fixed everything up appropriately in #49, can you have a look?
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funsim
commented on July 29, 2024
The test in my first post still fails for me on the solver-parameters branch. Does it pass for you?
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wence-
commented on July 29, 2024
Sorry, I have fixed it now I think, please try again.
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funsim
commented on July 29, 2024
That fixed my issue. Thanks!
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wence-
commented on July 29, 2024
Now landed in d27ae81.
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