unmpiswitch.f90

基于linux操作下的fortran快速付立变换的程序

        subroutine unmpiswitch(j3,n1dfft,Jp2st,J2st,lot,n1,nd2proc,nd3proc,nproc,ioption,zw,zmpi1)
        implicit real*8 (a-h,o-z)
        dimension zmpi1(2,n1,nd2proc,nd3proc,nproc),zw(2,lot,n1)

        mfft=0
	if (ioption == 2) then
        do 300,Jp2=Jp2st,nproc
        do 200,J2=J2st,nd2proc
        mfft=mfft+1
        if (mfft.gt.n1dfft) then
        Jp2st=Jp2
        J2st=J2
        return
        endif
        do 100,I1=1,n1
        zmpi1(1,I1,J2,j3,Jp2)=zw(1,mfft,I1)
        zmpi1(2,I1,J2,j3,Jp2)=zw(2,mfft,I1)
100     continue
200     continue
        J2st=1
300     continue
	else
        do 600,Jp2=Jp2st,nproc
        do 500,J2=J2st,nd2proc
        mfft=mfft+1
        if (mfft.gt.n1dfft) then
        Jp2st=Jp2
        J2st=J2
        return
        endif
	ind=(Jp2-1) * nd2proc + J2
	jj2=(ind-1)/nproc +1
	jjp2=modulo(ind,nproc) +1
        do 400,I1=1,n1
	zmpi1(1,I1,jj2,j3,jjp2)=zw(1,mfft,I1)
        zmpi1(2,I1,jj2,j3,jjp2)=zw(2,mfft,I1)
400     continue
500     continue
        J2st=1
600     continue
	endif
        end