[petsc-users] Is LU decomposition performed in MUMPS accessible in PETSc?

Hong Zhang hzhang at mcs.anl.gov
Tue Nov 22 11:59:29 CST 2011


Marc :

> Let A be a square sparse matrix of size n x n (n of order up to 1 M). Is it
> possible to access in PETSc to the lower and upper decomposition coefficient
> triangles (L and U) of A factored in the MUMPS external package?

You may run the code with option
-mat_mumps_icntl_4 <0>: ICNTL(4): level of printing (0 to 4) (None)

with '-mat_mumps_icntl_4 4', you'll see the data structure of analysis
phase, ...
If you need more, contact mumps developer.

Hong

> =========================================================
> Polytech'Marseille, Département de Mécanique Energétique
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