[mpich-discuss] MPICH2 and LAPACK

[Pavan Balaji]

If I understand what you are doing correctly, you don't need to 
recompile LAPACK -- you can continue using the single process LAPACK 
functions within each MPI process. As you noted, you just compile your 
application with mpif90 instead of gfortran; everything else stays the 
same. For example, you can do:

% mpif90 foo.f -llapack -lblas

instead of

% gfortran foo.f -llapack -lblas

  -- Pavan

On 05/10/2010 05:47 PM, Hélvio Vairinhos wrote:
> Hi, 
> I am new to this forum, and this is my first post.
> 
> I am developing a code in Fortran 90, and I use some basic MPI commands 
> and LAPACK routines. I work in a Windows platform, but I use Cygwin for 
> development. I use the LAPACK package that comes with the Cygwin 
> installation, which works perfectly fine when I compile F90 codes with 
> gfortran (the usual -llapack -lblas flags). But now I want to 
> parallelized my code by adding some basic MPI commands. For this 
> purpose, I installed MPICH2 from source, and use mpif90 to compile my 
> parallel codes in Cygwin; it works perfectly fine! However, I don't know 
> how to compile my codes when both MPI commands and LAPACK routine calls 
> are present.
> 
> So my questions are: How can I compile LAPACK routines (not ScaLAPACK) 
> with mpif90? Is it possible to use the LAPACK routines that come with 
> the Cygwin installation?
> 
> Any help is appreciated. Thanks!
> 
> -- Hélvio
> 
> 
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-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji