Matthew, Out of curiosity what would you term as very very large? The matrices I am using will probably be of order 10^3 x 10^3 elements.
Thanks, Tim. Matthew Knepley wrote: > On 10/4/07, Dr. Timothy Stitt <timothy.stitt at ichec.ie> wrote: > >> Dear PETSc Community, >> >> I was wondering if anyone knew of any sparse/dense banded linear solvers >> that run in order (N)? Does PETSc provide such a solver or link to an >> appropriate external solver? There seems to be a lot of links online to >> theoretical approaches but we are having difficulties in sourcing an >> implementation? I am hoping PETSc might be our saviour ??? >> > > Have you tried MUMPS or SuperLU, both available through PETSc's configure? > They are not truly O(N), but its hard to tell the difference until you get > very > very large, or have a nice elliptic PDE on a regular grid. In the > latter case, you > should use the PETSc DMMG. > > Matt > > >> Thanks in advance, >> >> Tim. >> >> -- >> Dr. Timothy Stitt <timothy_dot_stitt_at_ichec.ie> >> HPC Application Consultant - ICHEC (www.ichec.ie) >> >> Dublin Institute for Advanced Studies >> 5 Merrion Square - Dublin 2 - Ireland >> >> +353-1-6621333 (tel) / +353-1-6621477 (fax) / +353-874195427 (mobile) >> >> >> > > > -- Dr. Timothy Stitt <timothy_dot_stitt_at_ichec.ie> HPC Application Consultant - ICHEC (www.ichec.ie) Dublin Institute for Advanced Studies 5 Merrion Square - Dublin 2 - Ireland +353-1-6621333 (tel) / +353-1-6621477 (fax) / +353-874195427 (mobile)
