Thanks 2009/6/29 Eric Blossom <[email protected]>
> On Mon, Jun 29, 2009 at 05:21:29PM +0200, Vincenzo Pellegrini wrote: > > Hi everybody, > > I have recently had a look at two possibilities for SWRadio-aimed > intensive > > computing, > > which i guess are the two main development lanes for our kind of stuff: > > > > .:. Cell BE platform > > .:. CUDA & nVidia GPUs > > > > I think this list is the best place to for a discussion on PROs and CONs > of > > the two solutions, > > but couldn't find any by searching the mailing list. > > > > has this been discussed already? > > There's been a lot of conversation about this stuff, but mostly off list. > > Many of us are hoping that Larrabee turns out to be a big winner. > > The Cell BE is pretty cool, and fun to program, but I'm not sure how > much of a future it has. > > I'd say the court is still out on CUDA with regard to signal > processing applications. From my reading of the CUDA docs, it looks > like you need a very "data parallel" application to take good > advantage of it. Again from reading, it appears that you need at > least 64 elements that you can apply an instruction to, to be in it's > target zone. For certain parts of our graphs, this is probably OK > (e.g., FEC decode, FIR's, FFTs), but I'm kind of dubious about > anything with a depedency chain (IIR's, PLLs, equalizers, etc.) With regards to the 64 elements to apply an instruction to, can you say a bit more about this? Does it mean to at least a computation of than 64 times (like a loop thats more than 64 times) per one call to the device? > I'm > also not sure if you can launch multiple kernels simultaneously > (CUDA-speak). If you could launch multiple kernels, we'd have a > better chance of using the parallelism. That said, more experimenting > should be done with GPUs to see if they can be made useful for signal > processing. > I am also trying to experiment to see how GPUs can make GNURadio faster, but progressing very slowly....anyone who can give me a boost would be great! > > regards to all gr-fellows > > vincenzo > > Eric > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
_______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
