m_fftw Module Reference

Forward and inverse FFT wrappers (FFTW/cuFFT/hipFFT) for azimuthal Fourier filtering in cylindrical geometries. More...

Functions/Subroutines
impure subroutine, public	s_initialize_fftw_module
	Initialize the FFTW module.
impure subroutine, public	s_apply_fourier_filter (q_cons_vf)
	Apply a Fourier low-pass filter in the azimuthal direction to remove high-frequency content.
impure subroutine, public	s_finalize_fftw_module
	Finalize the FFTW module.

Variables
type(c_ptr)	fwd_plan
type(c_ptr)	bwd_plan
type(c_ptr)	fftw_real_data
type(c_ptr)	fftw_cmplx_data
type(c_ptr)	fftw_fltr_cmplx_data
integer	real_size
integer	cmplx_size
integer	x_size
integer	batch_size
integer	nfq
real(c_double), dimension(:), pointer	data_real
	Real data.
complex(c_double_complex), dimension(:), pointer	data_cmplx
	Complex data in Fourier space.
complex(c_double_complex), dimension(:), pointer	data_fltr_cmplx
	Filtered complex data in Fourier space.
real(dp), dimension(:), allocatable, target	data_real_gpu
complex(dp), dimension(:), allocatable, target	data_cmplx_gpu
complex(dp), dimension(:), allocatable, target	data_fltr_cmplx_gpu
type(c_ptr)	fwd_plan_gpu
type(c_ptr)	bwd_plan_gpu
integer, dimension(:), allocatable	gpu_fft_size
integer, dimension(:), allocatable	iembed
integer, dimension(:), allocatable	oembed
integer	istride
integer	ostride
integer	idist
integer	odist
integer	rank

Detailed Description

Forward and inverse FFT wrappers (FFTW/cuFFT/hipFFT) for azimuthal Fourier filtering in cylindrical geometries.

Function/Subroutine Documentation

s_apply_fourier_filter()

impure subroutine, public m_fftw::s_apply_fourier_filter

(

type(scalar_field), dimension(sys_size), intent(inout)

q_cons_vf

)

Apply a Fourier low-pass filter in the azimuthal direction to remove high-frequency content.

Definition at line 564 of file m_fftw.fpp.f90.

s_finalize_fftw_module()

impure subroutine, public m_fftw::s_finalize_fftw_module

Finalize the FFTW module.

Definition at line 1179 of file m_fftw.fpp.f90.

s_initialize_fftw_module()

impure subroutine, public m_fftw::s_initialize_fftw_module

Initialize the FFTW module.

Definition at line 391 of file m_fftw.fpp.f90.

Variable Documentation

batch_size

integer m_fftw::batch_size

Definition at line 342 of file m_fftw.fpp.f90.

bwd_plan

type(c_ptr) m_fftw::bwd_plan

Definition at line 340 of file m_fftw.fpp.f90.

bwd_plan_gpu

type(c_ptr) m_fftw::bwd_plan_gpu

Definition at line 379 of file m_fftw.fpp.f90.

cmplx_size

integer m_fftw::cmplx_size

Definition at line 342 of file m_fftw.fpp.f90.

data_cmplx

complex(c_double_complex), dimension(:), pointer m_fftw::data_cmplx

Complex data in Fourier space.

Definition at line 344 of file m_fftw.fpp.f90.

data_cmplx_gpu

complex(dp), dimension(:), allocatable, target m_fftw::data_cmplx_gpu

Definition at line 360 of file m_fftw.fpp.f90.

data_fltr_cmplx

complex(c_double_complex), dimension(:), pointer m_fftw::data_fltr_cmplx

Filtered complex data in Fourier space.

Definition at line 345 of file m_fftw.fpp.f90.

data_fltr_cmplx_gpu

complex(dp), dimension(:), allocatable, target m_fftw::data_fltr_cmplx_gpu

Definition at line 361 of file m_fftw.fpp.f90.

data_real

real(c_double), dimension(:), pointer m_fftw::data_real

Real data.

Definition at line 343 of file m_fftw.fpp.f90.

data_real_gpu

real(dp), dimension(:), allocatable, target m_fftw::data_real_gpu

Definition at line 359 of file m_fftw.fpp.f90.

fftw_cmplx_data

type(c_ptr) m_fftw::fftw_cmplx_data

Definition at line 341 of file m_fftw.fpp.f90.

fftw_fltr_cmplx_data

type(c_ptr) m_fftw::fftw_fltr_cmplx_data

Definition at line 341 of file m_fftw.fpp.f90.

fftw_real_data

type(c_ptr) m_fftw::fftw_real_data

Definition at line 341 of file m_fftw.fpp.f90.

fwd_plan

type(c_ptr) m_fftw::fwd_plan

Definition at line 340 of file m_fftw.fpp.f90.

fwd_plan_gpu

type(c_ptr) m_fftw::fwd_plan_gpu

Definition at line 379 of file m_fftw.fpp.f90.

gpu_fft_size

integer, dimension(:), allocatable m_fftw::gpu_fft_size

Definition at line 384 of file m_fftw.fpp.f90.

idist

integer m_fftw::idist

Definition at line 385 of file m_fftw.fpp.f90.

iembed

integer, dimension(:), allocatable m_fftw::iembed

Definition at line 384 of file m_fftw.fpp.f90.

istride

integer m_fftw::istride

Definition at line 385 of file m_fftw.fpp.f90.

nfq

integer m_fftw::nfq

Definition at line 342 of file m_fftw.fpp.f90.

odist

integer m_fftw::odist

Definition at line 385 of file m_fftw.fpp.f90.

oembed

integer, dimension(:), allocatable m_fftw::oembed

Definition at line 384 of file m_fftw.fpp.f90.

ostride

integer m_fftw::ostride

Definition at line 385 of file m_fftw.fpp.f90.

rank

integer m_fftw::rank

Definition at line 385 of file m_fftw.fpp.f90.

real_size

integer m_fftw::real_size

Definition at line 342 of file m_fftw.fpp.f90.

x_size

integer m_fftw::x_size

Definition at line 342 of file m_fftw.fpp.f90.