petsc-3.9.4 2018-09-11
MatCreateVecs
Get vector(s) compatible with the matrix, i.e. with the same parallel layout
Synopsis
#include "petscmat.h"
PetscErrorCode MatCreateVecs(Mat mat,Vec *right,Vec *left)
Collective on Mat
Input Parameter
mat -the matrix
Output Parameter
| right | - (optional) vector that the matrix can be multiplied against
|
| left | - (optional) vector that the matrix vector product can be stored in
|
Notes
The blocksize of the returned vectors is determined by the row and column block sizes set with MatSetBlockSizes() or the single blocksize (same for both) set by MatSetBlockSize().
Notes: These are new vectors which are not owned by the Mat, they should be destroyed in VecDestroy() when no longer needed
See Also
MatCreate(), VecDestroy()
Level
advanced
Location
src/mat/interface/matrix.c
Examples
src/mat/examples/tutorials/ex9.c.html
src/ksp/ksp/examples/tutorials/ex42.c.html
src/ksp/ksp/examples/tutorials/ex49.c.html
src/ksp/ksp/examples/tutorials/ex54.c.html
src/ksp/ksp/examples/tutorials/ex56.c.html
src/ksp/ksp/examples/tutorials/ex63.cxx.html
src/ksp/ksp/examples/tutorials/ex64.c.html
src/ksp/ksp/examples/tutorials/ex68.c.html
src/ksp/ksp/examples/tutorials/ex69.c.html
src/ksp/ksp/examples/tutorials/ex72.c.html
src/ksp/ksp/examples/tutorials/ex100.c.html
Implementations
MatCreateVecs_MPIAIJCUSPARSE in src/mat/impls/aij/mpi/mpicusparse/mpiaijcusparse.cu
MatCreateVecs_MPIAIJViennaCL in src/mat/impls/aij/mpi/mpiviennacl/mpiaijviennacl.cxx
MatCreateVecs_SeqAIJCUSPARSE in src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu
MatCreateVecs_SeqAIJViennaCL in src/mat/impls/aij/seq/seqviennacl/aijviennacl.cxx
MatCreateVecs_Nest in src/mat/impls/nest/matnest.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages