I asked:
> > How do I best customize the compiler flags? Should I edit the
> > variables directly in petscconf, or can I do it with configure ?
OK. I found this out. It's quite obvious :)
./config/configure.py --help gives _lots_ of helpful info.
On Fri, 24 Feb 2006, Berend van Wachem wrote
Hi Razi,
I have tested both atlas and other blas/lapack and found small effects
on linux.
For using ATLAS with petsc, you configure ATLAS, build it, and then
specify when you configure petsc
--with-blas-lapack-dir=
where your ATLAS libs are. In my case, I use
--with-blas-lapack-dir=/usr/local/A
Hi all,
I have a couple questions about the PETSc performance:
Does having ATLAS ( math-atlas.sourceforge.net ) help ? If so how do I
hook it to PETSc ?
How do I best customize the compiler flags? Should I edit the
variables directly in petscconf, or can I do it with configure ?
Thanks,
Razi
On Fri, 24 Feb 2006, abdul-rahman at tu-harburg.de wrote:
> How do I best customize the compiler flags? Should I edit the
> variables directly in petscconf, or can I do it with configure ?
To compile with optimizationflags - you can use the following
configure options:
--with-debugging=0 COPTFLA
