Solvers not working
2 posts
• Page 1 of 1
Solvers not working
by deveight » Wed Jul 03, 2013 6:23 am
- deveight
- Posts: 1
- Joined: Fri Jun 28, 2013 9:32 am
Re: Solvers not working
by john » Wed Jul 03, 2013 10:02 am
These matrices have definitely been made dense, correct? And the symmetric portions have been populated? GESV assumes dense and fully filled, and the sparse MTX files are neither.
Keep in mind that GESV modifies the matrix and leaves the LU factorized matrix in its place, so if you call it twice with the same matrix it will not solve the second one properly. You need to use GETRS for subsequent solves against the same matrix.
Keep in mind that GESV modifies the matrix and leaves the LU factorized matrix in its place, so if you call it twice with the same matrix it will not solve the second one properly. You need to use GETRS for subsequent solves against the same matrix.
- john
- Administrator
- Posts: 587
- Joined: Thu Jul 23, 2009 2:31 pm
2 posts
• Page 1 of 1
Who is online
Users browsing this forum: No registered users and 1 guest