Using existing mpich for new built

[Ben Tay]

Hi,

In that case, can I use the this mpich library for other builds of PETSc on
the same system? For e.g., I have 2 builts, 1 with external solver like
hypre, another without. Can I use the same mpich built for the 2nd PETSc
after I had the 1st PETSc library compiled?

Similarly, can I reuse the blas/lapack compiled for the 1st built?

What are the options?

Thank you.


On 5/4/07, Matthew Knepley <knepley at gmail.com> wrote:
>
> When you rebuild, you use the same option, --download-mpich and it will do
> the
> correct thing.
>
> Matt
>
> On 5/4/07, Ben Tay <zonexo at gmail.com> wrote:
> > Hi,
> >
> > I just compiled a shared version of PETSc. I realised that I've
> forgotten to
> > add --download-hypre=1 in the configure. Hence I need to rebuilt the
> PETSc.
> > Initially I had used --download-mpich=1 to built the mpich.
> >
> > Before the "make all test", I got:
> >
> > ...
> >
> > MPI:
> >   Includes:
> > ['/nfs/lsftmp/g0306332/petsc-2.3.2-p8/externalpackages/mpich2-1.0.4p1
> /atlas3/include']
> >   Library:
> > ['/nfs/lsftmp/g0306332/petsc-2.3.2-p8/externalpackages/mpich2-1.0.4p1
> /atlas3/lib/libmpich.a',
> > ' libnsl.a', 'librt.a']
> >
> > ...
> >
> > I tried to "reuse" this library for the new built but it failed. It says
> >
> >          UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.logfor
> > details):
> >
> ---------------------------------------------------------------------------------------
> > Shared libraries cannot be built using MPI provided.
> > Either rebuild with --with-shared=0 or rebuild MPI with shared library
> > support
> >
> > My option is
> > --with-mpi-include=/nfs/lsftmp/g0306332/petsc-2.3.2-p8
> /externalpackages/mpich2-1.0.4p1/atlas3/include
> > --with-mpi-lib=/nfs/lsftmp/g0306332/petsc-2.3.2-p8
> /externalpackages/mpich2-1.0.4p1/atlas3/lib/libmpich.a
> >
> > I also changed libmpich.a to libmpich.so but the same error occurs. Is
> there
> > any way I can use the mpich which I built earlier.
> >
> > Thanks.
>
>
> --
> The government saving money is like me spilling beer. It happens, but
> never on purpose.
>
>
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