[daip] Re: CONVL

[Eric Greisen]

Frazer Owen writes:

 >     Can you fix this ? Easily ? I have some images between 8400 and 
 > 11500 on a side that
 > I would like to convolve.
 > 
 > CONVL2: Task CONVL  (release of 31DEC05) begins
 > CONVL2: CANNOT HANDLE SUBIMAGES LARGER THAN  8192 ON A SIDE
 > CONVL2: Purports to die of UNNATURAL causes
 > 
It required allow 32K images in the FFT engine.  CONVL rounds up to
the next power of 2 and then doubles that.  I tried getting it to live
without the doubling but it is too deeply embedded so I changed the
FFT routines.  It took 9600 sec real time to do a 10K image.

Eric Greisen