petsc-3.9.3 2018-07-02
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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