[petsc-users] Partition in x direction is too fine error

[Matthew Knepley]

On Mon, Apr 4, 2016 at 2:13 AM, TAY wee-beng <zonexo at gmail.com> wrote:

> Hi,
>
> I tried to run a case with dm and I got the error msg:
>
>
> [0]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> [0]PETSC ERROR: Argument out of range
> [0]PETSC ERROR: Partition in x direction is too fine! 3 4
> [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html
> for trouble shooting.
> [0]PETSC ERROR: Petsc Release Version 3.6.3, Dec, 03, 2015
> [0]PETSC ERROR: ./a.out on a petsc-3.6.3_intel_rel named std0210 by
> tsltaywb Mon Apr  4 15:10:06 2016
> [0]PETSC ERROR: Configure options
> --with-mpi-dir=/app/intel/compilers_and_libraries_2016.1.150/linux/mpi/intel64
> --with-blas-lapack-dir=/app/intel/compilers_and_libraries_2016.1.150/linux/mkl/lib/intel64
> --download-hypre=/home/nus/tsltaywb/source/hypre-2.10.0b-p2.tar.gz
> --with-debugging=0 --prefix=//home/nus/tsltaywb/lib/petsc-3.6.3_intel_rel
> --with-shared-libraries=0 --known-mpi-shared-libraries=0
> --with-fortran-interfaces=1
>
> My grid size is size_x,size_y,size_z          128 217         210
>
> and I'm using 96 procs.
>
> May I know what's wrong?


You must have some other grids being partitioned as well. We need to see
the entire stack trace. Here
it is saying that the size in x (3) is less than the number of processors
in x (4), so maybe you are using
multigrid or grid sequencing.

   Matt


> --
> Thank you
>
> Yours sincerely,
>
> TAY wee-beng
>
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20160404/c87d758f/attachment.html>