understanding the output from -info

[Ben Tay]

Hi,

I tried to compile PETSc again and using --download-hypre=1. My command
given is

./config/configure.py --with-vendor-compilers=intel
--with-blas-lapack-dir=/lsftmp/g0306332/inter/mkl/ --wit
h-x=0 --with-shared --with-mpi-dir=/opt/mpich/myrinet/intel/
--with-debugging=0 --download-hypre=1

I tried twice and the same error msg appears:

Downloaded hypre could not be used. Please check install in
/nas/lsftmp/g0306332/petsc-2.3.2-p8/externalpackages/hypre-1.11.1b/linux-hypre.
I've attached the configure.log for your reference.

Thank you.




On 2/12/07, Barry Smith <bsmith at mcs.anl.gov> wrote:
>
>
>
> On Mon, 12 Feb 2007, Ben Tay wrote:
>
> > Hi,
> >
> > I have some questions regarding the use of hypre/boomeramg:
> >
> > 1. Is there anything I need to change in the assembly of matrix etc
> besides
> > adding  -pc_type hypre -pc_hypre_type boomeramg ?
>
>   No
> >
> > 2. Can it work in a sequential code?
>
>   yes
> >
> > 3. I have 2 eqns to solve - momentum and poisson. if I used the options,
> > will both equations be solved using hypre?
>
> yes
>
> >  Can I select which solver to
> > solve with which equation?
>
> yes. For each KSP call KSPSetOptionsPrefix() for example
> KSPSetOptionsPrefix(kspmo,"momentum);
> KSPSetOptionsPrefix(ksppo,"poisson");
> then from the command line use -momentum_ksp_type gmres -poisson_ksp_type
> cg
> -momentum_pc_type lusomething etc. For any solver option.
>
>   Barry
>
> >
> > Thank you.
> >
> >
> > On 2/12/07, Barry Smith <bsmith at mcs.anl.gov> wrote:
> > >
> > >
> > > hypre/boomeramg may be the way to go, especially for the Poisson
> > > problem. -pc_type hypre -pc_hypre_type boomeramg (-help for lots of
> > > tuning options.).
> > >
> > >   Barry
> > >
> > >
> > > On Sun, 11 Feb 2007, Ben Tay wrote:
> > >
> > > > Well,
> > > >
> > > > I am simulating unsteady flow past a moving airfoil at Re~10^4. I'm
> > > using
> > > > fractional step FVM, which means that I need to solve a momentum and
> > > poisson
> > > > equation.
> > > >
> > > > To reach a periodic state takes quite a few hours and so I'm trying
> to
> > > find
> > > > ways to speed up the process. I thought parallelizing the code would
> > > help
> > > > but it seems like it's not the case.
> > > >
> > > > I'm now trying out different types of solver/preconditioner
> available on
> > > > PETSc to assess their performance. Is there other external solvers,
> > > which
> > > > PETSc interfaces, which are recommended? I'm thinking of using
> multigrid
> > > to
> > > > solve the poisson eqn... wonder if hypre/BoomerAMG etc would help...
> > > >
> > > >
> > > > On 2/11/07, Lisandro Dalcin <dalcinl at gmail.com> wrote:
> > > > >
> > > > > On 2/10/07, Ben Tay <zonexo at gmail.com> wrote:
> > > > > > In other words, for my CFD code, it is not possible to
> parallelize
> > > it
> > > > > > effectively because the problem is too small?
> > > > > >
> > > > > > Is these true for all parallel solver, or just PETSc? I was
> hoping
> > > to
> > > > > reduce
> > > > > > the runtime since mine is an unsteady problem which requires
> many
> > > steps
> > > > > to
> > > > > > reach a periodic state and it takes many hours to reach it.
> > > > >
> > > > > Can you describe your specific application and how are you solving
> it?
> > > > > As Barry said, your need-for-speed is not likely to be solved by
> > > > > running in parallel.
> > > > >
> > > > >
> > > > > --
> > > > > Lisandro Dalcín
> > > > > ---------------
> > > > > Centro Internacional de Métodos Computacionales en Ingeniería
> (CIMEC)
> > > > > Instituto de Desarrollo Tecnológico para la Industria Química
> (INTEC)
> > > > > Consejo Nacional de Investigaciones Científicas y Técnicas
> (CONICET)
> > > > > PTLC - Güemes 3450, (3000) Santa Fe, Argentina
> > > > > Tel/Fax: +54-(0)342-451.1594
> > > > >
> > > > >
> > > >
> >
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20070212/5041e2e1/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: configure.log
Type: application/octet-stream
Size: 2817836 bytes
Desc: not available
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20070212/5041e2e1/attachment.obj>