Hi,
I am using DofMap::add_constrain_row() to constrain some dofs to zero:
libMesh::DofConstraintRow c_row;
dof_map.add_constraint_row(*dof_it, c_row, true);
This is implemented in an object derived from System::Constrain. Then, I
call System::reinit_constraints() before assembly.
This has been working fine, but I have one case that is tripping the
following error when I call SparseMatrix::add_matrix(). I am going to start to
dig into this to figure out why this might be happening, but if there are any
quick words of advice, that would be very helpful.
I am a bit puzzled since this is for a diagonal entry. My understanding is
that constraining dofs should not remove them from the sparsity pattern. I
guess I am missing something here.
Regards,
Manav
[1;31m[0]PETSC ERROR: --------------------- Error Message
--------------------------------------------------------------
[0;39m[0;49m[0]PETSC ERROR: Argument out of range
[0]PETSC ERROR: New nonzero at (7308,7308) caused a malloc
Use MatSetOption(A, MAT_NEW_NONZERO_ALLOCATION_ERR, PETSC_FALSE) to turn off
this check
[0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for
trouble shooting.
[0]PETSC ERROR: Petsc Release Version 3.8.0, unknown
[0]PETSC ERROR:
/Users/manav/Library/Developer/Xcode/DerivedData/mast_workspace-hfyswujevmwgyugsmyueuaouvmkj/Build/Products/Debug/example_driver
on a arch-darwin-c-opt named Dhcp-90-164.HPC.MsState.Edu by manav Thu Mar 1
10:42:54 2018
[0]PETSC ERROR: Configure options
--prefix=/Users/manav/Documents/codes/numerical_lib/petsc/petsc/../
--CC=mpicc-openmpi-clang40 --CXX=mpicxx-openmpi-clang40
--FC=mpif90-openmpi-clang40 --with-fortran=0
--with-mpiexec=/opt/local/bin/mpiexec-openmpi-clang40 --with-shared-libraries=1
--with-x=1 --with-x-dir=/opt/X11 --with-debugging=0
--with-lapack-lib=/usr/lib/liblapack.dylib
--with-blas-lib=/usr/lib/libblas.dylib --download-superlu=yes
--download-superlu_dist=yes --download-suitesparse=yes --download-mumps=yes
--download-scalapack=yes --download-parmetis=yes --download-metis=yes
--download-hypre=yes --download-ml=yes
[0]PETSC ERROR: #1 MatSetValues_SeqAIJ() line 481 in
/Users/manav/Documents/codes/numerical_lib/petsc/petsc/src/mat/impls/aij/seq/aij.c
[0]PETSC ERROR: #2 MatSetValues() line 1270 in
/Users/manav/Documents/codes/numerical_lib/petsc/petsc/src/mat/interface/matrix.c
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