[petsc-users] Rock & Hard Place with SuperLU

[Gaetan Kenway]

Hi everyone

I have the exactly same issue actually. When I updated to petsc-3.3,
SuperLU_dist was giving me random answers to KSPSolve(). Maybe half of the
time you would get the same result as 3.2, other times it was a little off
and other times widely differnet. I am using SuperLU_dist with a PREONLY
ksp object.

I haven't tracked down what is causing it and reverted back to petsc-3.2
that still works.

Also, to fix the issue with the configure below, just drop out the
download-metis. You need it for 3.3 but not 3.2

Gaetan

On Mon, Jan 28, 2013 at 4:42 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> Send -ksp_monitor_true_residual -ksp_view output for both cases so we can
> try to identify the source of the different convergence behavior.
>
>
> On Mon, Jan 28, 2013 at 3:37 PM, Brian Helenbrook <bhelenbr at clarkson.edu>wrote:
>
>> Dear Petsc-Users-List,
>>
>> I recently upgraded to petsc3.3-p5 from petsc3.2-p7 and the results from
>> my code have changed.  I am using superLU with the following options:
>>
>> -ksp_type preonly -pc_type lu -pc_factor_mat_solver_package superlu_dist
>>
>> Everything was working with petsc3.2 but now I get totally different
>> answers and the iteration doesn't converge.   My build configuration is
>>
>> ./config/configure.py --prefix=${HOME}/Packages --with-fortran=0
>>  --download-superlu_dist=1 --with-x=0 --download-parmetis=1
>> --download-metis=1 --with-mpi-dir=${HOME}/Packages
>> --with-valgrind-dir=${HOME}/Packages
>>
>> I am running on OS X 10.8.2 with openmpi-1.6.3.
>>
>> I have run valgrind on my code and it is clean (except for start-up
>> issues with mpi which occur before my code is entered.)
>>
>> I'm not very sure how to go about debugging this.   What I've tried is to
>> re-install pets-3.2-p7, but now I am having trouble getting that to build:
>>
>> ./config/configure.py --prefix=${HOME}/Packages --with-fortran=0
>>  --download-superlu_dist=1 --with-x=0 --download-parmetis=1
>> --download-metis=1 --with-mpi-dir=${HOME}/Packages
>> --with-valgrind-dir=${HOME}/Packages
>>
>> ===============================================================================
>>              Configuring PETSc to compile on your system
>>
>> ===============================================================================
>>
>> ===============================================================================
>> Compiling & installing Metis; this may take several minutes
>> ===============================================================================
>>
>>
>> *******************************************************************************
>>          UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.log for
>> details):
>>
>> -------------------------------------------------------------------------------
>> Error running make on Metis: Could not execute "cd
>> /Users/bhelenbr/Packages/petsc-3.2-p7/externalpackages/metis-4.0.3 && make
>> clean && make library && make minstall && make clean":
>>
>>
>> Any ideas what direction to go with this?
>>
>> Thanks,
>>
>> Brian
>>
>>
>>
>> Brian Helenbrook
>> Associate Professor
>> 362 CAMP
>> Mech. and Aero. Eng. Dept.
>> Clarkson University
>> Potsdam, NY 13699-5725
>>
>> work: 315-268-2204
>> fax: 315-268-6695
>>
>>
>>
>>
>
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