Re: [Libmesh-users] SparseMatrix multiplication.

[Kirk, B. (JSC-EG311) <ben...@na...>]

Check the PETSC matrix libmesh documentation - I think there is a method to return the raw PETSC object. 

I know there is for vectors anyway!

-Ben



On Sep 17, 2012, at 9:42 AM, "Andrew E Slaughter" <and...@gm...> wrote:

> I need to multiply two SparseMatrix objects together, in parallel, does
> libMesh have this functionality?
> 
> One possible solution is to use the PETSc MatMatMult function, but this
> requires that I use PetscMatrix objects, which I also cannot figure out how
> to do. Can someone indicate how I can specify the ImplicitSystem::matrix
> and a matrix added with ImplicitSystem::add_matrix can be PetscMatrix
> objects.
> 
> Thanks,
> Andrew
> 
> -- 
> Andrew E. Slaughter, PhD
> and...@gm...
> 
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