[petsc-users] PETSc and dense matrices

[Jed Brown]

On Thu, Jan 6, 2011 at 09:46, Hamid M. <spam.wax at gmail.com> wrote:

> 1- Can I use PETSc to build/populate my LHS matrix on different nodes
> of a cluster (as opposed to constructing it on a single node and then
> distributing it) ?
>

You should always do this.


>
> 2- Are there optimized parallel solvers for dense matrices in PETSc ?
>

The current implementation uses PLAPACK.


You might also consider using FMM (see
http://barbagroup.bu.edu/Barba_group/PetFMM.html) since explicit storage of
dense matrices cannot scale.
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