MatCreateDenseFromVecType#

Create a matrix that matches the type of a Vec.

Synopsis#

PetscErrorCode MatCreateDenseFromVecType(MPI_Comm comm, VecType vtype, PetscInt m, PetscInt n, PetscInt M, PetscInt N, PetscInt lda, PetscScalar *data, Mat *A)

Collective

Input Parameters#

  • comm - the communicator

  • vtype - the vector type

  • m - number of local rows (or PETSC_DECIDE to have calculated if M is given)

  • n - number of local columns (or PETSC_DECIDE to have calculated if N is given)

  • M - number of global rows (or PETSC_DECIDE to have calculated if m is given)

  • N - number of global columns (or PETSC_DECIDE to have calculated if n is given)

  • lda - optional leading dimension. Pass any non-positive number to use the default.

  • data - optional location of matrix data, which should have the same memory type as the vector. Pass NULL to have PETSc take care of matrix memory allocation.

Output Parameter#

  • A - the dense matrix

See Also#

Matrices, Mat, MatCreateDense(), MatCreateDenseCUDA(), MatCreateDenseHIP(), PetscMemType

Level#

advanced

Location#

src/mat/utils/veccreatematdense.c

Examples#

src/mat/tutorials/ex19.c

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