[petsc-users] Search order for BLAS

[Satish Balay]

I've changed the search order - so it should look for atlas last [as
it can usually be found in /usr/lib]. For non-system default packages
the search order shouldn't matter.

This change should be available in the next patch update to petsc-3.1

http://petsc.cs.iit.edu/petsc/releases/BuildSystem-3.1/rev/838c7bfa03e0

Satish

On Sat, 26 Feb 2011, F R Foust wrote:

> I was trying to build petsc using MKL blas/lapack and had a small issue.  I tried to point configure at the mkl directory with --with-blas-lapack-dir, but it found an installation of ATLAS already in /usr/local/lib and used that instead.  I poked around and found a fixed search order in BuildSystem/config/packages/BlasLapack.py (it tries ATLAS, AMD ACML, then MKL).
> 
> Is there any way to force a specific flavor of BLAS in a flag passed to configure (I mean, so I don't have to modify BlasLapack.py, which is what I did).  Or alternatively, is there a way to force the issue by using --with-blas-lapack-lib, --with-blas-lib?  I wasn't able to figure out the correct incantation to include all of the stuff MKL needs to link against.
> 
> Thanks much!
> 
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