YES, :). On Thu, Jan 6, 2011 at 7:19 PM, Raeth, Peter <PRaeth at hpti.com> wrote:
> Are your matrices dense? > > Peter G. Raeth, Ph.D. > Senior Staff Scientist > Signal and Image Processing > High Performance Technologies, Inc > 937-904-5147 > praeth at hpti.com > ------------------------------ > *From:* petsc-users-bounces at mcs.anl.gov [petsc-users-bounces at > mcs.anl.gov] > on behalf of RenZhengYong [renzhengyong at gmail.com] > *Sent:* Thursday, January 06, 2011 1:18 PM > *To:* PETSc users list > *Subject:* Re: [petsc-users] PETSc and dense matrices > > 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, Z?rich, Switzerland > Tel: +41 44 633 37561 > e-mail: zhengyong.ren at aug.ig.erdw.ethz.ch > Gmail: renzhengyong at gmail.com > -- Zhengyong Ren AUG Group, Institute of Geophysics Department of Geosciences, ETH Zurich NO H 47 Sonneggstrasse 5 CH-8092, Z?rich, 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/fe04b706/attachment.htm>
