MatMult#
Computes the matrix-vector product, \(y = Ax\).
Synopsis#
#include "petscmat.h"
PetscErrorCode MatMult(Mat mat, Vec x, Vec y)
Neighbor-wise Collective
Input Parameters#
mat - the matrix
x - the vector to be multiplied
Output Parameter#
y - the result
Note#
The vectors x and y cannot be the same. I.e., one cannot
call MatMult(A,y,y).
See Also#
Matrices, Mat, MatMultTranspose(), MatMultAdd(), MatMultTransposeAdd()
Level#
beginner
Location#
Examples#
src/ksp/pc/tutorials/ex3.c
src/ts/tutorials/ex3.c
src/ksp/pc/tutorials/ex4.c
src/ts/tutorials/ex4.c
src/dm/impls/swarm/tutorials/ex1f90.F90
src/ts/tutorials/ex22f_mf.F90
src/ts/tutorials/ex50.c
src/ksp/ksp/tutorials/ex14f.F90
src/ts/tutorials/ex45.c
src/ksp/ksp/tutorials/ex15f.F90
Implementations#
MatMult_HYPREStruct() in src/dm/impls/da/hypre/mhyp.c
MatMult_HYPRESStruct() in src/dm/impls/da/hypre/mhyp.c
MatMult_SeqUSFFT() in src/dm/impls/da/usfft/matusfft.c
MatMult_AAt() in src/ksp/pc/impls/h2opus/pch2opus.c
MatMult_MAmI() in src/ksp/pc/impls/h2opus/pch2opus.c
MatMult_Hyper() in src/ksp/pc/impls/h2opus/pch2opus.c
MatMult_NS() in src/ksp/pc/impls/h2opus/pch2opus.c
MatMult_Schur() in src/ksp/pc/impls/hpddm/pchpddm.cxx
MatMult_SchurCorrection() in src/ksp/pc/impls/hpddm/pchpddm.cxx
MatMult_Harmonic() in src/ksp/pc/impls/hpddm/pchpddm.cxx
MatMult_ML() in src/ksp/pc/impls/ml/ml.c
MatMult_MPIAIJKokkos() in src/mat/impls/aij/mpi/kokkos/mpiaijkok.kokkos.cxx
MatMult_MPIAIJ() in src/mat/impls/aij/mpi/mpiaij.c
MatMult_MPIAIJCUSPARSE() in src/mat/impls/aij/mpi/mpicusparse/mpiaijcusparse.cu
MatMult_MPIAIJHIPSPARSE() in src/mat/impls/aij/mpi/mpihipsparse/mpiaijhipsparse.hip.c
MatMult_SeqAIJ() in src/mat/impls/aij/seq/aij.c
MatMult_SeqAIJMKL() in src/mat/impls/aij/seq/aijmkl/aijmkl.c
MatMult_SeqAIJPERM() in src/mat/impls/aij/seq/aijperm/aijperm.c
MatMult_SeqAIJSELL() in src/mat/impls/aij/seq/aijsell/aijsell.c
MatMult_AIJCRL() in src/mat/impls/aij/seq/crl/crl.c
MatMult_SeqAIJKokkos() in src/mat/impls/aij/seq/kokkos/aijkok.kokkos.cxx
MatMult_SeqAIJCUSPARSE() in src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu
MatMult_SeqAIJHIPSPARSE() in src/mat/impls/aij/seq/seqhipsparse/aijhipsparse.hip.c
MatMult_SeqAIJViennaCL() in src/mat/impls/aij/seq/seqviennacl/aijviennacl.cxx
MatMult_MPIBAIJ() in src/mat/impls/baij/mpi/mpibaij.c
MatMult_BlockMat() in src/mat/impls/blockmat/seq/blockmat.c
MatMult_ConstantDiagonal() in src/mat/impls/cdiagonal/cdiagonal.c
MatMult_Centering() in src/mat/impls/centering/centering.c
MatMult_Composite() in src/mat/impls/composite/mcomposite.c
MatMult_SeqCUFFT() in src/mat/impls/cufft/cufft.cu
MatMult_MPIDense() in src/mat/impls/dense/mpi/mpidense.c
MatMult_SeqDense() in src/mat/impls/dense/seq/dense.c
MatMult_Diagonal() in src/mat/impls/diagonal/diagonal.c
MatMult_Elemental() in src/mat/impls/elemental/matelem.cxx
MatMult_SeqFFTW() in src/mat/impls/fft/fftw/fftw.c
MatMult_MPIFFTW() in src/mat/impls/fft/fftw/fftw.c
MatMult_H2OPUS() in src/mat/impls/h2opus/cuda/math2opus.cu
MatMult_Htool() in src/mat/impls/htool/htool.cxx
MatMult_HYPRE() in src/mat/impls/hypre/mhypre.c
MatMult_IS() in src/mat/impls/is/matis.c
MatMult_SeqKAIJ() in src/mat/impls/kaij/kaij.c
MatMult_MPIKAIJ() in src/mat/impls/kaij/kaij.c
MatMult_LRC() in src/mat/impls/lrc/lrc.c
MatMult_MFFD() in src/mat/impls/mffd/mffd.c
MatMult_Nest() in src/mat/impls/nest/matnest.c
MatMult_Normal() in src/mat/impls/normal/normm.c
MatMult_NormalHermitian() in src/mat/impls/normal/normmh.c
MatMult_MPISBAIJ() in src/mat/impls/sbaij/mpi/mpisbaij.c
MatMult_ScaLAPACK() in src/mat/impls/scalapack/matscalapack.c
MatMult_Scatter() in src/mat/impls/scatter/mscatter.c
MatMult_MPISELL() in src/mat/impls/sell/mpi/mpisell.c
MatMult_SeqSELL() in src/mat/impls/sell/seq/sell.c
MatMult_SeqSELLCUDA() in src/mat/impls/sell/seq/seqcuda/sellcuda.cu
MatMult_SeqSELLHIP() in src/mat/impls/sell/seq/seqhip/sellhip.hip.c
MatMult_Shell() in src/mat/impls/shell/shell.c
MatMult_CF() in src/mat/impls/shell/shellcnv.c
MatMult_SubMatrix() in src/mat/impls/submat/submat.c
MatMult_HT() in src/mat/impls/transpose/htransm.c
MatMult_Transpose() in src/mat/impls/transpose/transm.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages