[petsc-users] PETSc and dense matrices

[RenZhengYong]

Hi, Hamid,
I am also using BEM to solve 3D EM problems.
But I only am using the PETSc on one machine.

Kind regards,
Zhengyong

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

> Hello,
>
> In our research, we solve the diffusion equation PDE using Boundary
> Element Method (BEM).
> I am trying to parallelize the code we already have and I was
> wondering if PETSc is the right tool for us.
>
> As you know, BEM produces a dense LHS matrix that needs to be solved.
> Also due to the size of our problems, populating the entities of the
> LHS matrix needs to be done on different processes as it won't fit on
> a single process of our cluster.
>
> So I was wondering if you guys can answer my questions:
>
> 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) ?
>
> 2- Are there optimized parallel solvers for dense matrices in PETSc ?
>
> 3- If the answer to question 1 is 'No', can I build my LHS matrix
> independent of PETSc and then direct PETSc to solve it for me ?
>
> thanks in advance,
>
> Hamid
>



-- 
Zhengyong Ren
AUG Group, Institute of Geophysics
Department of Geosciences, ETH Zurich
NO H 47 Sonneggstrasse 5
CH-8092, Zürich, Switzerland
Tel: +41 44 633 37561
e-mail: zhengyong.ren at aug.ig.erdw.ethz.ch
Gmail: renzhengyong at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110106/8c0f6b31/attachment.htm>