> Le 23 févr. 2018 à 09:55, Christoph Kuhr <christoph.k...@web.de> a écrit : > > Hey, > > perhapes some topic to discuss on LAC2018? > >> 1) GPU computation is not really adapted to the need of general audio >> algorithms, but more for highly « data parallel » needs (likes images). In >> audio code, as soon as your code is doing recursions, GPU are quite >> inefficient and not used the way they like >> >> 2) the code generation strategy was very naive, so probably even under-using >> what could be theoretically achieved >> >> 3) GPU/CPU memory transfer suffers from high latency, so is not adapted to >> real-time computation with small buffer sizes > I did some recent research on that. > http://ceur-ws.org/Vol-2009/fmt-proceedings-2017-paper10.pdf > > With NVidia Pascal architecture ( > GT 10XX) and newer you have Zero-Copy > Data Transfer. > Sadly now Pascal Card around :-/ > > With GT 900 we could achieve 512 Samples / 48k @ 2Ch.
Very interesting indeed ! > > >> >> I read later on that the Csound guys did some experiment, see here about the >> CUDA thing: http://www.csounds.com/manual/html/PrefaceWhatsNew.html. Victor >> Lazzarini on this list can probably develop here. >> >> So my conclusion is that OpenCL/CUDA *could* be interesting again assuming >> 1) a subset of audio algorithms only would be compiled, 2) the Faust >> compiler possibly need some new primitives (vector, matrix..) more adapted >> to GPU processing, and code generation would have two be improved, 3) the >> latency issues would have to be revisited with more recent and powerful >> cards. > > I am not very familiar with using Faust, just followed it on LAC. I just > think this would be a really interesting topic, espacially with the Faust web > interpreter Do you mean using WebGL for GPGPU ? > You could do some serious online signal processing like virtual soundscapes, > which is something we are considering in our research project fast-music > (www.soundjack.eu). > Or am I on a wrong path regarding Faust? > Well I suggest you dig a bit more the language itself, with them documentation and libraries here : http://faust.grame.fr/Documentation/ Then "FAUST Compiler for GPGPU could then be an interesting topic for «Round Table Topics » for IFC: here http://www.ifc18.uni-mainz.de ? Would you be there? Stéphane ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Faudiostream-users mailing list Faudiostreamfirstname.lastname@example.org https://lists.sourceforge.net/lists/listinfo/faudiostream-users