[petsc-users] Retrieving the L U factors
hzhang at mcs.anl.gov
Mon Jul 27 10:33:52 CDT 2015
> I would like to know how I can retrieve the lower triangular matrix
> (possibly permuted or preferably the inverse of L) and the upper triangular
> matrix (preferably the inverse of U) from the LU factorization done by an
> external package (such as MUMPS).
> I need them to build a preconditioner of a much larger size for a 3D
> Zin Lin
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