petsc-3.9.4 2018-09-11
MatSetUp
Sets up the internal matrix data structures for the later use.
Synopsis
#include "petscmat.h"
PetscErrorCode MatSetUp(Mat A)
Collective on Mat
Input Parameters
A -the Mat context
Notes
If the user has not set preallocation for this matrix then a default preallocation that is likely to be inefficient is used.
If a suitable preallocation routine is used, this function does not need to be called.
See the Performance chapter of the PETSc users manual for how to preallocate matrices
Keywords
Mat, setup
See Also
MatCreate(), MatDestroy()
Level
beginner
Location
src/mat/interface/matrix.c
Examples
src/mat/examples/tutorials/ex4.c.html
src/mat/examples/tutorials/ex8.c.html
src/ksp/pc/examples/tutorials/ex3.c.html
src/ksp/ksp/examples/tutorials/ex1.c.html
src/ksp/ksp/examples/tutorials/ex5.c.html
src/ksp/ksp/examples/tutorials/ex6.c.html
src/ksp/ksp/examples/tutorials/ex8.c.html
src/ksp/ksp/examples/tutorials/ex9.c.html
src/ksp/ksp/examples/tutorials/ex11.c.html
src/ksp/ksp/examples/tutorials/ex12.c.html
src/ksp/ksp/examples/tutorials/ex15.c.html
Implementations
MatSetUp_HYPREStruct in src/dm/impls/da/hypre/mhyp.c
MatSetUp_HYPRESStruct in src/dm/impls/da/hypre/mhyp.c
MatSetUp_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatSetUp_SeqAIJ in src/mat/impls/aij/seq/aij.c
MatSetUp_MPIBAIJ in src/mat/impls/baij/mpi/mpibaij.c
MatSetUp_SeqBAIJ in src/mat/impls/baij/seq/baij.c
MatSetUp_MPIDense in src/mat/impls/dense/mpi/mpidense.c
MatSetUp_SeqDense in src/mat/impls/dense/seq/dense.c
MatSetUp_Elemental in src/mat/impls/elemental/matelem.cxx
MatSetUp_HYPRE in src/mat/impls/hypre/mhypre.c
MatSetUp_MAIJ in src/mat/impls/maij/maij.c
MatSetUp_NestIS_Private in src/mat/impls/nest/matnest.c
MatSetUp_Preallocator in src/mat/impls/preallocator/matpreallocator.c
MatSetUp_MPISBAIJ in src/mat/impls/sbaij/mpi/mpisbaij.c
MatSetUp_SeqSBAIJ in src/mat/impls/sbaij/seq/sbaij.c
MatSetUp_MPISELL in src/mat/impls/sell/mpi/mpisell.c
MatSetUp_SeqSELL in src/mat/impls/sell/seq/sell.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages