MatSetFromOptions#

Creates a matrix where the type is determined from the options database. Generates a parallel MPI matrix if the communicator has more than one processor. The default matrix type is MATAIJ, using the routines MatCreateSeqAIJ() and MatCreateAIJ() if you do not select a type in the options database.

Synopsis#

#include "petscmat.h"  
PetscErrorCode MatSetFromOptions(Mat B)

Collective

Input Parameter#

  • A - the matrix

Options Database Keys#

Even More Options Database Keys#

See the manpages for particular formats (e.g., MatCreateSeqAIJ()) for additional format-specific options.

See Also#

MatCreateSeqAIJ((), MatCreateAIJ(), MatCreateSeqDense(), MatCreateDense(), MatCreateSeqBAIJ(), MatCreateBAIJ(), MatCreateSeqSBAIJ(), MatCreateSBAIJ(), MatConvert()

Level#

beginner

Location#

src/mat/utils/gcreate.c

Examples#

src/mat/tutorials/ex10.c.html
src/mat/tutorials/ex15.c.html
src/mat/tutorials/ex15f.F90.html
src/mat/tutorials/ex16.c.html
src/mat/tutorials/ex17.c.html
src/mat/tutorials/ex17f.F90.html
src/mat/tutorials/ex18.c.html
src/mat/tutorials/ex4.c.html
src/mat/tutorials/ex4f.F90.html
src/mat/tutorials/ex5cu.cu.html
src/mat/tutorials/ex5k.kokkos.cxx.html

Implementations#

MatSetFromOptions_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatSetFromOptions_MPIAIJCUSPARSE in src/mat/impls/aij/mpi/mpicusparse/mpiaijcusparse.cu
MatSetFromOptions_MPIAIJHIPSPARSE in src/mat/impls/aij/mpi/mpihipsparse/mpiaijhipsparse.hip.c
MatSetFromOptions_MUMPS in src/mat/impls/aij/mpi/mumps/mumps.c
MatSetFromOptions_SeqAIJCUSPARSE in src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu
MatSetFromOptions_SeqAIJHIPSPARSE in src/mat/impls/aij/seq/seqhipsparse/aijhipsparse.hip.c
MatSetFromOptions_Composite in src/mat/impls/composite/mcomposite.c
MatSetFromOptions_H2OPUS in src/mat/impls/h2opus/cuda/math2opus.cu
MatSetFromOptions_Htool in src/mat/impls/htool/htool.cxx
MatSetFromOptions_IS in src/mat/impls/is/matis.c
MatSetFromOptions_MFFD in src/mat/impls/mffd/mffd.c
MatSetFromOptions_MPISELL in src/mat/impls/sell/mpi/mpisell.c


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