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MDE_mod.f90
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subroutine MDE_q()
USE nrtype,only :DP,PI
USE global_para
USE mpi
USE control
USE constants
USE utility
USE mmpi
!USE fftw !user defined module
USE mpi_fftw3_operation
implicit none
integer :: i,j,s
integer :: index_nonzero
integer :: k
integer :: istat2
!for A
real(DP),allocatable :: exp_WA(:)
!for B
real(DP),allocatable :: exp_WB(:)
REAL(DP) :: M_grid_inv
!for A
allocate(exp_WA(0:LOCAL_SIZE-1),stat=istat2)
!for B
allocate(exp_WB(0:LOCAL_SIZE-1),stat=istat2)
if(istat2/=0) then
write(*,*) "allocate matrix in mde_q failed"
stop
endif
M_grid_inv=1.0d0/M_grid
do k=0,LOCAL_SIZE-1
qA(0,K)=1.0
enddo
do k=0,LOCAL_SIZE-1
exp_WA(k)=exp(-ds*wA(k)*0.5)
exp_WB(k)=exp(-ds*wB(k)*0.5)
enddo
!!!!!
do s=1,NA
!!!doing the forward FFT
do k=0,LOCAL_SIZE-1
local_data(k+1)=cmplx(qA(s-1,k)*exp_WA(k),0.0)
enddo
call fftw_mpi_execute_dft(fplan, local_data, local_data)
!call fftwnd_f77_mpi(plancf,1,local_data,work,0,FFTW_NORMAL_ORDER)
do k=0,LOCAL_SIZE-1
local_data(k+1)=local_data(k+1)*exp_K2(k)
enddo
call fftw_mpi_execute_dft(bplan, local_data, local_data)
do k=0,LOCAL_SIZE-1
qA(s,k)=real(local_data(k+1))*M_grid_inv*exp_WA(k)
enddo
enddo !enddo s=1,NA
do k=0,LOCAL_SIZE-1
qB(0,K)=qA(NA,k)
enddo
do s=1+NA,Nmax
!!!doing the forward FFT
do k=0,LOCAL_SIZE-1
local_data(k+1)=cmplx(qB(s-1-NA,k)*exp_WB(k),0.0)
enddo
call fftw_mpi_execute_dft(fplan, local_data, local_data)
!call fftwnd_f77_mpi(plancf,1,local_data,work,0,FFTW_NORMAL_ORDER)
do k=0,LOCAL_SIZE-1
local_data(k+1)=local_data(k+1)*exp_K2(k)
enddo
call fftw_mpi_execute_dft(bplan, local_data, local_data)
do k=0,LOCAL_SIZE-1
qB(s-NA,k)=real(local_data(k+1))*M_grid_inv*exp_WB(k)
enddo
enddo !enddo s=1+NA,Nmax
deallocate(exp_WA)
deallocate(exp_WB)
end subroutine MDE_q
subroutine MDE_qstar()
USE nrtype,only :DP,PI
USE global_para
USE mpi
USE control
USE constants
USE utility
USE mmpi
!USE fftw !user defined module
USE mpi_fftw3_operation
implicit none
integer :: i,j,s
integer :: index_nonzero
integer :: k
integer :: istat2
!for A
real(DP),allocatable :: exp_WA(:)
!for B
real(DP),allocatable :: exp_WB(:)
REAL(DP) :: M_grid_inv
!for A
allocate(exp_WA(0:LOCAL_SIZE-1),stat=istat2)
!for B
allocate(exp_WB(0:LOCAL_SIZE-1),stat=istat2)
if(istat2/=0) then
write(*,*) "allocate matrix in mde_q failed"
stop
endif
M_grid_inv=1.0d0/M_grid
do k=0,LOCAL_SIZE-1
qBstar(0,K)=1.0
enddo
do k=0,LOCAL_SIZE-1
exp_WA(k)=exp(-ds*wA(k)*0.5)
exp_WB(k)=exp(-ds*wB(k)*0.5)
enddo
!!!!!
do s=1,NB
!!!doing the forward FFT
do k=0,LOCAL_SIZE-1
local_data(k+1)=cmplx(qBstar(s-1,k)*exp_WB(k),0.0)
enddo
call fftw_mpi_execute_dft(fplan, local_data, local_data)
!call fftwnd_f77_mpi(plancf,1,local_data,work,0,FFTW_NORMAL_ORDER)
do k=0,LOCAL_SIZE-1
local_data(k+1)=local_data(k+1)*exp_K2(k)
enddo
call fftw_mpi_execute_dft(bplan, local_data, local_data)
do k=0,LOCAL_SIZE-1
qBstar(s,k)=real(local_data(k+1))*M_grid_inv*exp_WB(k)
enddo
enddo !enddo s=1,NB
do k=0,LOCAL_SIZE-1
qAstar(0,K)=qBstar(NB,k)
enddo
do s=1+NB,Nmax
!!!doing the forward FFT
do k=0,LOCAL_SIZE-1
local_data(k+1)=cmplx(qAstar(s-1-NB,k)*exp_WA(k),0.0)
enddo
call fftw_mpi_execute_dft(fplan, local_data, local_data)
!call fftwnd_f77_mpi(plancf,1,local_data,work,0,FFTW_NORMAL_ORDER)
do k=0,LOCAL_SIZE-1
local_data(k+1)=local_data(k+1)*exp_K2(k)
enddo
call fftw_mpi_execute_dft(bplan, local_data, local_data)
do k=0,LOCAL_SIZE-1
qAstar(s-NB,k)=real(local_data(k+1))*M_grid_inv*exp_WA(k)
enddo
enddo !enddo s=1+NB,Nmax
deallocate(exp_WA)
deallocate(exp_WB)
end subroutine MDE_qstar