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arpack/eigs problems (was: Re: moving toward a 3.0 release)
From: |
John W. Eaton |
Subject: |
arpack/eigs problems (was: Re: moving toward a 3.0 release) |
Date: |
Fri, 29 Sep 2006 12:23:03 -0400 |
On 29-Sep-2006, Joe Koski wrote:
| on 9/29/06 1:53 AM, David Bateman at address@hidden wrote:
|
| > Thanks for the ideas Joe, I think I'll definitely try the -r8 option and
| > see if it help..
|
| One more comment, and then I'll shut up.
|
| With old code, which this probably isn't, the old Fortran practice of
| relying on variables being unchanged when you reenter to a subroutine can
| bite you. I think the g77 flag for saving all variables is -fno-automatic,
| but just placing a blanket SAVE instead of a SAVE j,etc. in the code can
| give the same effect. Not an efficient or elegant solution, but it often
| works. We resorted to that fix in one routine of our local CFD code, when,
| after much head scratching, we couldn't figure out which variable wasn't
| being properly SAVEd.
I guessed that some variable that should have been saved was not, so I
tried -fno-automatic and it did not avoid the crash.
jwe
- Re: moving toward a 3.0 release, (continued)
- Re: moving toward a 3.0 release, David Bateman, 2006/09/27
- Re: moving toward a 3.0 release, John W. Eaton, 2006/09/27
- Re: moving toward a 3.0 release, David Bateman, 2006/09/27
- Re: moving toward a 3.0 release, John W. Eaton, 2006/09/28
- Re: moving toward a 3.0 release, David Bateman, 2006/09/28
- Re: moving toward a 3.0 release, John W. Eaton, 2006/09/28
- Re: moving toward a 3.0 release, Joe Koski, 2006/09/28
- Re: moving toward a 3.0 release, Sebastien Loisel, 2006/09/28
- Re: moving toward a 3.0 release, David Bateman, 2006/09/29
- Re: moving toward a 3.0 release, Joe Koski, 2006/09/29
- arpack/eigs problems (was: Re: moving toward a 3.0 release),
John W. Eaton <=
- Re: moving toward a 3.0 release, John W. Eaton, 2006/09/27
- Re: moving toward a 3.0 release, David Bateman, 2006/09/27
- Re: moving toward a 3.0 release, John W. Eaton, 2006/09/27
- Re: moving toward a 3.0 release, David Bateman, 2006/09/27
- Re: moving toward a 3.0 release, Søren Hauberg, 2006/09/27
- Re: moving toward a 3.0 release, John W. Eaton, 2006/09/27
- Re: moving toward a 3.0 release, Quentin Spencer, 2006/09/27
- Re: moving toward a 3.0 release, John W. Eaton, 2006/09/27
- Re: moving toward a 3.0 release, Sebastien Loisel, 2006/09/27
- Re: moving toward a 3.0 release, David Grohmann, 2006/09/28