TPSA restructure (3/3): Newton defaults for linear elasticity - #7359
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TPSA restructure (3/3): Newton defaults for linear elasticity#7359svenn-t wants to merge 3 commits into
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- Old 7x7 block structure is broken up to several sub-matrices, purpose-made for preconditioners like Hypre. - New structure made to interface 7x7 structure in linearizer without changes.
- One preconditioner for whole TPSA system; three sub-block preconditioner can be set by user - Allows for Hypre, which is default if linked; else ilu0
- newton procedure now: check linearization, if error larger than tolerance, solve linear system - lowered linear solve tolerance - more clear fixed-stress conv. check - bug fix: num. dofs on owned cells only - moved calc. of info to mech. output to separate function, which is called at endTimeStep() - option to scale linear system for better conv. check with dune solvers (preconditioners are invariant)
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jenkins build this please |
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Change Newton to default to 1 iteration, to speed up linear elasticity solves with TPSA. Now we only do one linearization, check the error, and proceed with one linear solve if linearization error is too high. Increased linear solver tolerance to compensate for only doing 1 Newton iteration.
Also includes some minor changes and fixes:
Includes both PRs #7357 and #7358, which should be merged first. Draft mode until then.