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https://github.com/saitohirga/WSJT-X.git
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c7c50830bf
This issue was probably triggered by OpenMP forcing some large arrays onto the stack where Fortran might normally make them static. The change that seemed to make the difference was putting cdat2 in msk144_freq_search into static storage. I am not convinced that the problem is really solved but it works for now. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7130 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
113 lines
2.6 KiB
Fortran
113 lines
2.6 KiB
Fortran
subroutine msk144sync(cdat,nframes,ntol,delf,navmask,npeaks,fc,fest, &
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npklocs,nsuccess,c)
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!$ use omp_lib
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parameter (NSPM=864)
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complex cdat(NSPM*nframes)
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complex c(NSPM) !Coherently averaged complex data
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complex cs(NSPM,8)
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complex cb(42) !Complex waveform for sync word
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! integer*8 count0,count1,clkfreq
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integer s8(8)
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integer iloc(1)
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integer npklocs(npeaks)
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integer navmask(nframes) ! defines which frames to average
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real cbi(42),cbq(42)
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real pkamps(npeaks)
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real xcc(0:NSPM-1)
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real xccs(0:NSPM-1,8)
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real xm(8)
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real bf(8)
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real pp(12) !Half-sine pulse shape
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logical first
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data first/.true./
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data s8/0,1,1,1,0,0,1,0/
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save first,cb,fs,pi,twopi,dt,s8,pp
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! call system_clock(count0,clkfreq)
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if(first) then
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pi=4.0*atan(1.0)
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twopi=8.0*atan(1.0)
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fs=12000.0
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dt=1.0/fs
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do i=1,12 !Define half-sine pulse
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angle=(i-1)*pi/12.0
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pp(i)=sin(angle)
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enddo
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! Define the sync word waveforms
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s8=2*s8-1
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cbq(1:6)=pp(7:12)*s8(1)
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cbq(7:18)=pp*s8(3)
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cbq(19:30)=pp*s8(5)
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cbq(31:42)=pp*s8(7)
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cbi(1:12)=pp*s8(2)
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cbi(13:24)=pp*s8(4)
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cbi(25:36)=pp*s8(6)
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cbi(37:42)=pp(1:6)*s8(8)
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cb=cmplx(cbi,cbq)
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first=.false.
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endif
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nfreqs=2*nint(ntol/delf) + 1
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xm=0.0
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bf=0.0
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nthreads=1
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!$ nthreads=min(8,int(OMP_GET_MAX_THREADS(),4))
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nstep=nfreqs/nthreads
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!$OMP PARALLEL NUM_THREADS(nthreads) PRIVATE(id,if1,if2)
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id=1
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!$ id=OMP_GET_THREAD_NUM() + 1 !Thread id = 1,2,...
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if1=-nint(ntol/delf) + (id-1)*nstep
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if2=if1+nstep-1
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if(id.eq.nthreads) if2=nint(ntol/delf)
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call msk144_freq_search(cdat,fc,if1,if2,delf,nframes,navmask,cb, &
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xm(id),bf(id),cs(1,id),xccs(1,id))
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! write(73,3002) id,if1,if2,nfreqs,nthreads,bf(id),xm(id)
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!3002 format(5i5,2f10.3)
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!$OMP END PARALLEL
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xmax=xm(1)
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fest=fc+bf(1)
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c=cs(1:NSPM,1)
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xcc=xccs(0:NSPM-1,1)
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if(nthreads.gt.1) then
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do i=2,nthreads
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if(xm(i).gt.xmax) then
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xmax=xm(i)
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fest=fc+bf(i)
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c=cs(1:NSPM,i)
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xcc=xccs(0:NSPM-1,i)
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endif
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enddo
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endif
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! Find npeaks largest peaks
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do ipk=1,npeaks
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iloc=maxloc(xcc)
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ic2=iloc(1)
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npklocs(ipk)=ic2
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pkamps(ipk)=xcc(ic2-1)
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xcc(max(0,ic2-7):min(NSPM-1,ic2+7))=0.0
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enddo
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if( xmax .lt. 0.7 ) then
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nsuccess=0
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else
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nsuccess=1
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endif
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! call system_clock(count1,clkfreq)
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! t=float(count1-count0)/clkfreq
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! write(72,3001) nfreqs,OMP_GET_MAX_THREADS(),nthreads,t
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!3001 format(3i6,f8.3)
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return
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end subroutine msk144sync
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