On Mon, Sep 17, 2012 at 8:42 AM, Andrew E Slaughter <andrew.e.slaugh...@gmail.com> 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.
I guess one question is what are you planning to do with the resulting matrix? In general it will have different sparsity than either of the two operands. -- John ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
