[petsc-users] Access to factored matrix.

[Jed Brown]

"De Groof, Vincent Frans Maria" <Vincent.De-Groof at uibk.ac.at> writes:

> Hi,
>
>
> I'm looking for a way to access the factor of a matrix to be able to
> change it. I'm using CHOLMOD for the factorization which uses the
> cholmod_factor object. The data contained in this object is basically
> what I want to get access to. Ideally, I'll be able to use the
> petsc-functions as is. Make some changes to the factored matrix and
> afterwards continue usingthe petsc-functions.

What changes do you want to make?  This is typically not supported by
direct solver packages.  You can include the private header and dig into
it to your hearts content, but PETSc doesn't supply a public interface
for this.

  #include <../src/mat/impls/sbaij/seq/cholmod/cholmodimpl.h>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 818 bytes
Desc: not available
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20140620/7c486a9d/attachment.pgp>