Hello,
I have a problem about superlu_dis.
The result of Ax=b is NaN. The error information is:
****** Warning from MC64A/AD. INFO(1) = 2
Linear solve converged due to CONVERGED_ITS iterations 1
[0]PETSC ERROR: --------------------- Error Message
------------------------------------
[0]PETSC ERROR: Floating point exception!
[0]PETSC ERROR: Infinite or not-a-number generated in norm!
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: Petsc Release Version 3.2.0, Patch 7, Thu Mar 15 09:30:51 CDT
2012
[0]PETSC ERROR: See docs/changes/index.html for recent updates.
[0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
[0]PETSC ERROR: See docs/index.html for manual pages.
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: ./ex4f on a arch-linu named node4 by wang Fri Jan 4 20:48:16
2013
[0]PETSC ERROR: Libraries linked from
/public/soft/ddc/soft/petsc/petsc-3.2-p7/arch-linux2-c-opt/lib
[0]PETSC ERROR: Configure run at Tue Jan 1 22:23:45 2013
[0]PETSC ERROR: Configure options --with-mpi-dir=/public/soft/ddc/soft/mpich2/
--download-f-blas-lapack=1 --download-hypre=1 --with-x=1 --with-debugging=0
--download-superlu_dist --download-parmetis --download-mumps
--download-scalapack
--download-blacs=/public/soft/ddc/soft/petsc/blacs-dev.tar.gz
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: VecNorm() line 167 in src/vec/vec/interface/rvector.c
Does it mean that the matrix is singular? Or the size of the matrix (in the
project, it is 250000X250000) is too large?
Thanks.
Jim
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