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/rosenbrock1.c
src/tao/unconstrained/tutorials/eptorsion1.c
src/tao/unconstrained/tutorials/eptorsion3.c
Implementations#
MatSolve_MKL_CPARDISO() in src/mat/impls/aij/mpi/mkl_cpardiso/mkl_cpardiso.c
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_SuperLU_DIST() in src/mat/impls/aij/mpi/superlu_dist/superlu_dist.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_MKL_PARDISO() in src/mat/impls/aij/seq/mkl_pardiso/mkl_pardiso.c
MatSolve_SeqAIJCUSPARSE() in src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu
MatSolve_SeqAIJHIPSPARSE() in src/mat/impls/aij/seq/seqhipsparse/aijhipsparse.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_ConstantDiagonal() in src/mat/impls/cdiagonal/cdiagonal.c
MatSolve_Diagonal() in src/mat/impls/diagonal/diagonal.c
MatSolve_Elemental() in src/mat/impls/elemental/matelem.cxx
MatSolve_Htool() in src/mat/impls/htool/htool.cxx
MatSolve_Htool() in src/mat/impls/htool/htool.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