Dear Lisandro: Barry has tried to establish an interface for Plapack. However, there are some bugs in Plapack. Therefore, it doesn't work. I am wondering if CG in Petsc can work with parallel dense matrix. When using the same matrix, which one is faster, sequential or parallel? thanks.
Regards, Yujie On Mon, Sep 22, 2008 at 6:51 PM, Lisandro Dalcin <dalcinl at gmail.com> wrote: > Well, any iterative solver will actually work, but expect a really > poor scalability :-). I believe (never used dense matrices) that you > could use a direct method (PLAPACK?), but again, be prepared for long > running times if your problem is (even moderately) large. > > On Mon, Sep 22, 2008 at 10:35 PM, Yujie <recrusader at gmail.com> wrote: > > To my knowledge, PETsc doesn't provide parallel dense matrix-based > solvers, > > such as for CG, GMRES and so on. If it is, how to deal with this problem? > > Thanks. > > > > Regards, > > > > Yujie > > > > > > -- > Lisandro Dalc?n > --------------- > Centro Internacional de M?todos Computacionales en Ingenier?a (CIMEC) > Instituto de Desarrollo Tecnol?gico para la Industria Qu?mica (INTEC) > Consejo Nacional de Investigaciones Cient?ficas y T?cnicas (CONICET) > PTLC - G?emes 3450, (3000) Santa Fe, Argentina > Tel/Fax: +54-(0)342-451.1594 > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20080922/29027117/attachment.htm>
