|
[Sponsors] |
November 13, 2011, 03:41 |
Gmres
|
#1 |
Member
EH
Join Date: Dec 2010
Posts: 61
Rep Power: 15 |
Hi guys,
I am not sure if it is okay to post this question here. I am trying to solve a sparse matrix using GMRES that comes along with Intel Fortran. Somehow after a few hundred iterations there is no difference in the residual and it stayed that way as the number of iterations increased. The matrix can be solved easily with direct solvers such as PARDISO or the standard Gauss elimination. No preconditioning is used yet. Does anyone knows why this is happening? Thanks. Sincerely, EH |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Gmres | OFU | OpenFOAM Programming & Development | 11 | November 3, 2015 09:08 |
Control volume renumbering for GMRES | ztdep | Main CFD Forum | 1 | October 26, 2009 08:37 |
GMRES | Mehdi | Main CFD Forum | 3 | December 31, 2006 12:03 |
Preconditioned Gmres | carlos | Main CFD Forum | 2 | April 14, 2003 06:24 |
Nonlinear/Linear GMRES is... | Saebyuk | Main CFD Forum | 0 | May 10, 1999 09:31 |