petsc-3.12.5 2020-03-29

MatCreateSeqCUFFT

Creates a matrix object that provides sequential FFT via the external package CUFFT

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

Collective

	comm	- MPI communicator, set to PETSC_COMM_SELF
	ndim	- the ndim-dimensional transform
	dim	- array of size ndim, dim[i] contains the vector length in the i-dimension

A -the matrix

-mat_cufft_plannerflags -set CUFFT planner flags

intermediate