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

• mattype - 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 matrix 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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