[petsc-users] Problem with -pc_type gamg

Randall Mackie rlmackie862 at gmail.com
Fri Sep 14 11:28:59 CDT 2012


For quite some time I've been solving my problems using BCGS with ASM and
that works quite well.
I was curious to try gamg, but when I try, I get error messages about
a new nonzero causing a malloc (see error message below). What is strange
is that in my code, I specifically
turn this off with:

      call MatSetOption(A,MAT_NEW_NONZERO_ALLOCATION_ERR,PETSC_FALSE,ierr)

Is there some way to turn this off globally, or is this error potentially
caused by some other issue?

Thanks, Randy

[0]PCSetData_AGG bs=3 MM=1286334
[0]PETSC ERROR: --------------------- Error Message
------------------------------------
[0]PETSC ERROR: Argument out of range!
[0]PETSC ERROR: New nonzero at (0,1) caused a malloc!
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: Petsc Release Version 3.3.0, Patch 3, Wed Aug 29 11:26:24
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: Configure run at Fri Aug 31 12:55:11 2012
[0]PETSC ERROR: Configure options --with-scalar-type=complex
--with-debugging=1 --with-fortran=1 --with-fortran-kernels=1
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: MatSetValues_SeqAIJ() line 346 in
/home/MackieR/PETSc/petsc-3.3-p3/src/mat/impls/aij/seq/aij.c
[0]PETSC ERROR: MatSetValues() line 1025 in
/home/MackieR/PETSc/petsc-3.3-p3/src/mat/interface/matrix.c
[0]PETSC ERROR: PCGAMGCreateGraph() line 68 in
/home/MackieR/PETSc/petsc-3.3-p3/src/ksp/pc/impls/gamg/tools.c
[0]PETSC ERROR: PCGAMGgraph_AGG() line 977 in
/home/MackieR/PETSc/petsc-3.3-p3/src/ksp/pc/impls/gamg/agg.c
[0]PETSC ERROR: PCSetUp_GAMG() line 656 in
/home/MackieR/PETSc/petsc-3.3-p3/src/ksp/pc/impls/gamg/gamg.c
[0]PETSC ERROR: PCSetUp() line 832 in
/home/MackieR/PETSc/petsc-3.3-p3/src/ksp/pc/interface/precon.c
[0]PETSC ERROR: KSPSetUp() line 278 in
/home/MackieR/PETSc/petsc-3.3-p3/src/ksp/ksp/interface/itfunc.c
[0]PETSC ERROR: KSPSolve() line 402 in
/home/MackieR/PETSc/petsc-3.3-p3/src/ksp/ksp/interface/itfunc.c
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