49 lines
1.5 KiB
Plaintext
49 lines
1.5 KiB
Plaintext
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subroutine timefft_opts(npatience,nthreads,linplace,lcomplex,nfft, &
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problem,nflags)
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use FFTW3
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logical linplace,lcomplex
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character problem*9,arg*12
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nargs=iargc()
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if(nargs.lt.3) then
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print*,'Usage: timefft npatience maxthreads [[o|i][r|c]]nfft'
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print*,' npatience - 0 to 4'
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print*,' maxthreads - suggest #CPUs or #CPUs-1'
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print*,' o,i - out-of-place or in-place (default=in-place)'
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print*,' r,c - real or complex (default=complex)'
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print*,' '
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print*,'Examples:'
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print*,' timefft 1 1 32768 (1 thread, in-place, complex)'
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print*,' timefft 2 3 or32768 (more patient, 3 threads,'
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print*,' out-of-place, real)'
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stop
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endif
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call getarg(1,arg)
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read(arg,*) npatience
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call getarg(2,arg)
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read(arg,*) nthreads
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call getarg(3,arg)
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linplace=arg(1:1).ne.'o' .and. arg(2:2).ne.'o'
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lcomplex=arg(1:1).ne.'r' .and. arg(2:2).ne.'r'
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k=3
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if(ichar(arg(2:2)).ge.48 .and. ichar(arg(2:2)).le.57) k=2
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if(ichar(arg(1:1)).ge.48 .and. ichar(arg(1:1)).le.57) k=1
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read(arg(k:),*) nfft
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write(problem,'(i9)') nfft
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problem='ic'//adjustl(problem)
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if(.not.linplace) problem(1:1)='o'
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if(.not.lcomplex) problem(2:2)='r'
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nflags=FFTW_ESTIMATE
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if(npatience.eq.1) nflags=FFTW_ESTIMATE_PATIENT
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if(npatience.eq.2) nflags=FFTW_MEASURE
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if(npatience.eq.3) nflags=FFTW_PATIENT
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if(npatience.eq.4) nflags=FFTW_EXHAUSTIVE
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return
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end subroutine timefft_opts
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