[petsc-users] -pc_fieldsplit_schur_precondition

Cotter, Colin J colin.cotter at imperial.ac.uk
Wed Dec 4 08:07:36 CST 2019

>Usually you use LU, which means making B dense, then doing MatMatSolve(), >and then MatMatMult() for sparse.

Gotcha, thanks. It is really nice to have this for debugging!

all the best
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