MatCreateFFT#

Creates a matrix object that provides FFT via an external package

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatCreateFFT(MPI_Comm comm, PetscInt ndim, const PetscInt dim[], MatType mattype, Mat *A)

Collective

Input Parameters#

  • comm - MPI communicator

  • ndim - the ndim-dimensional transform

  • dim - array of size ndim, dim[i] contains the vector length in the i-dimension

  • type - package type, e.g., MATFFTW or MATSEQCUFFT

Output Parameter#

  • A - the matrix

Options Database Key#

  • -mat_fft_type - set FFT type fft or seqcufft

Note#

This serves as a base class for all FFT marix classes, currently MATFFTW or MATSEQCUFFT

See Also#

Matrices, Mat, MATFFTW, MATSEQCUFFT, MatCreateVecsFFTW()

Level#

intermediate

Location#

src/mat/impls/fft/fft.c

Examples#

src/snes/tutorials/ex13.c
src/snes/tutorials/ex7.c

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