!> @file cuda_fft_interfaces.f90 !--------------------------------------------------------------------------------! ! This file is part of PALM. ! ! PALM is free software: you can redistribute it and/or modify it under the terms ! of the GNU General Public License as published by the Free Software Foundation, ! either version 3 of the License, or (at your option) any later version. ! ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. ! ! You should have received a copy of the GNU General Public License along with ! PALM. If not, see . ! ! Copyright 1997-2019 Leibniz Universitaet Hannover !--------------------------------------------------------------------------------! ! ! Current revisions: ! ----------------- ! ! ! Former revisions: ! ----------------- ! $Id: cuda_fft_interfaces.f90 4182 2019-08-22 15:20:23Z monakurppa $ ! Corrected "Former revisions" section ! ! 3655 2019-01-07 16:51:22Z knoop ! 1683 2015-10-07 23:57:51Z knoop ! ! ! Description: ! ------------ !> FORTRAN interfaces for the CUDA fft !> Routines for the fft along x and y (forward/backward) using the CUDA fft !--------------------------------------------------------------------------------! MODULE cuda_fft_interfaces #if defined ( __cuda_fft ) USE kinds INTEGER(iwp) :: CUFFT_FORWARD = -1 !< INTEGER(iwp) :: CUFFT_INVERSE = 1 !< INTEGER(iwp) :: CUFFT_R2C = Z'2a' !< Real to Complex (interleaved) INTEGER(iwp) :: CUFFT_C2R = Z'2c' !< Complex (interleaved) to Real INTEGER(iwp) :: CUFFT_C2C = Z'29' !< Complex to Complex, interleaved INTEGER(iwp) :: CUFFT_D2Z = Z'6a' !< Double to Double-Complex INTEGER(iwp) :: CUFFT_Z2D = Z'6c' !< Double-Complex to Double INTEGER(iwp) :: CUFFT_Z2Z = Z'69' !< Double-Complex to Double-Complex PUBLIC ! !-- cufftPlan1d( cufftHandle *plan, int nx, cufftType type, int batch ) INTERFACE CUFFTPLAN1D !------------------------------------------------------------------------------! ! Description: ! ------------ !> @todo Missing subroutine description. !------------------------------------------------------------------------------! SUBROUTINE CUFFTPLAN1D( plan, nx, type, batch ) bind( C, name='cufftPlan1d' ) USE ISO_C_BINDING INTEGER(C_INT) :: plan !< INTEGER(C_INT), value :: batch !< INTEGER(C_INT), value :: nx !< INTEGER(C_INT), value :: type !< END SUBROUTINE CUFFTPLAN1D END INTERFACE CUFFTPLAN1D ! !-- cufftDestroy( cufftHandle plan ) !!! remove later if not really needed !!! INTERFACE CUFFTDESTROY !------------------------------------------------------------------------------! ! Description: ! ------------ !> @todo Missing subroutine description. !------------------------------------------------------------------------------! SUBROUTINE CUFFTDESTROY( plan ) bind( C, name='cufftDestroy' ) USE ISO_C_BINDING INTEGER(C_INT), VALUE :: plan END SUBROUTINE CUFFTDESTROY END INTERFACE CUFFTDESTROY INTERFACE CUFFTEXECZ2D !------------------------------------------------------------------------------! ! Description: ! ------------ !> @todo Missing subroutine description. !------------------------------------------------------------------------------! SUBROUTINE CUFFTEXECZ2D( plan, idata, odata ) bind( C, name='cufftExecZ2D' ) USE ISO_C_BINDING USE kinds INTEGER(C_INT), VALUE :: plan !< COMPLEX(dp), DEVICE :: idata(:,:,:) !< REAL(dp), DEVICE :: odata(:,:,:) !< END SUBROUTINE CUFFTEXECZ2D END INTERFACE CUFFTEXECZ2D INTERFACE CUFFTEXECD2Z !------------------------------------------------------------------------------! ! Description: ! ------------ !> @todo Missing subroutine description. !------------------------------------------------------------------------------! SUBROUTINE CUFFTEXECD2Z( plan, idata, odata ) bind( C, name='cufftExecD2Z' ) USE ISO_C_BINDING USE kinds INTEGER(C_INT), VALUE :: plan !< REAL(dp), DEVICE :: idata(:,:,:) !< COMPLEX(dp), DEVICE :: odata(:,:,:) !< END SUBROUTINE CUFFTEXECD2Z END INTERFACE CUFFTEXECD2Z #else INTERFACE CUFFTdummy !------------------------------------------------------------------------------! ! Description: ! ------------ !> Dummy interface to avoid compiler warnings in case of no bublic objects !> declared. !------------------------------------------------------------------------------! SUBROUTINE CUFFTdummy( dummy ) USE kinds REAL(wp) :: dummy !< END SUBROUTINE CUFFTdummy END INTERFACE CUFFTdummy #endif END MODULE cuda_fft_interfaces