29 May
2006
29 May
'06
9:14 p.m.
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james(a)dis-dot-dat.net escribió:
On Mon, 29 May, 2006 at 04:49PM -0400, Dan Easley
spake thus:
My thoughts exactly... Given the great degree of variation in terms of
raw horsepower in graphics cards, especially the ones from the two
major vendors (ATi and nVidia), say you wrote something with a 7900,
how would a GF 4 440 MX, or an R9200 play that back?
Slashdot recently mentioned the following FFT via
GPU library:
http://gamma.cs.unc.edu/GPUFFTW/index.html
(slashdot article)
http://hardware.slashdot.org/hardware/06/05/29/1424213.shtml
it has a custom license, which seems friendly enough, but i'd
prefer GPL.
It would be nice if fftw switched to this when it was available.
Or would it? Maybe that would cause too much heterogeneity of
platform. Small changes from one system to another (ATI instead of
nVidia, for example) could change performance drastically. You'd
be unable to rely on an "average" level of performance. I might
write something nifty with my nVidia card and it be unusable by
some significant percentage of people because they just can't run
it that fast.
I dunno. What does everyone think? It's nice, but should we use
it?
James
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