MatSolve#
Solves A x = b, given a factored matrix.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatSolve(Mat mat, Vec b, Vec x)
Neighbor-wise Collective
Input Parameters#
mat - the factored matrix
b - the right-hand-side vector
Output Parameter#
x - the result vector
Notes#
The vectors b and x cannot be the same. I.e., one cannot
call MatSolve(A,x,x).
Most users should employ the KSP interface for linear solvers
instead of working directly with matrix algebra routines such as this.
See, e.g., KSPCreate().
See Also#
Matrices, Mat, Matrix Factorization, MatGetFactor(), MatLUFactor(), MatSolveAdd(), MatSolveTranspose(), MatSolveTransposeAdd()
Level#
developer
Location#
Examples#
src/tao/unconstrained/tutorials/eptorsion1.c
src/tao/unconstrained/tutorials/eptorsion3.c
src/tao/unconstrained/tutorials/rosenbrock1.c
Implementations#
MatSolve_SparseElemental in src/mat/impls/aij/mpi/clique/clique.cxx
MatSolve_MUMPS in src/mat/impls/aij/mpi/mumps/mumps.c
MatSolve_PaStiX in src/mat/impls/aij/mpi/pastix/pastix.c
MatSolve_STRUMPACK in src/mat/impls/aij/mpi/strumpack/strumpack.c
MatSolve_SeqAIJ in src/mat/impls/aij/seq/aijfact.c
MatSolve_Essl in src/mat/impls/aij/seq/essl/essl.c
MatSolve_KLU in src/mat/impls/aij/seq/klu/klu.c
MatSolve_SeqAIJKokkos in src/mat/impls/aij/seq/kokkos/aijkok.kokkos.cxx
MatSolve_LUSOL in src/mat/impls/aij/seq/lusol/lusol.c
MatSolve_Matlab in src/mat/impls/aij/seq/matlab/aijmatlab.c
MatSolve_SeqAIJCUSPARSE in src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu
MatSolve_SeqAIJCUSPARSEBAND in src/mat/impls/aij/seq/seqcusparse/aijcusparseband.cu
MatSolve_SeqAIJHIPSPARSE in src/mat/impls/aij/seq/seqhipsparse/aijhipsparse.hip.c
MatSolve_SeqAIJHIPSPARSEBAND in src/mat/impls/aij/seq/seqhipsparse/aijhipsparseband.hip.c
MatSolve_SPQR in src/mat/impls/aij/seq/spqr/aijspqr.c
MatSolve_SuperLU in src/mat/impls/aij/seq/superlu/superlu.c
MatSolve_UMFPACK in src/mat/impls/aij/seq/umfpack/umfpack.c
MatSolve_Elemental in src/mat/impls/elemental/matelem.cxx
MatSolve_CHOLMOD in src/mat/impls/sbaij/seq/cholmod/sbaijcholmod.c
MatSolve_ScaLAPACK in src/mat/impls/scalapack/matscalapack.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages