Hi all, A possible way to come around portability and other issues, you could pack just the computationally expensive code into a "slim" library that implements serial code or GPU code if the hardware is available. In past projects I noted that multi-core teams and GPU teams produce both good solutions if they work competitively and cooperatively on the same algorithms.
Francisco On 23.08.2013, at 22:57, Tim McNamara wrote: > On 24 August 2013 08:25, Oreste Villa <[email protected]> wrote: > Tim, > > I partially agree with you, in the sense that if you are not careful > portability can be an issue. Having said that I have the following comments. > > 1) We are talking about a small prototype for the CLA algorithm on GPU (used > to understand potential benefits of the approach) and not moving NuPIC > tomorrow to GPU X. > 2) I plan to make several tests (starting with CUDA) but ultimately using > OpenCL or openACC which support multiple architectures (multi-core CPUs and > GPU of different vendors). > 3) I would really like to work on MPI on the parallelism at larger scale, but > I have very limited bandwidth and unfortunately I can't work on both now (I > am glad to help and advise if there people that want to try immediately) > > Oreste > > I don't want to get in the way of good work! CUDA & OpenCL are very effective > technologies and I am actually very supportive. If you are happy to invest > your time, then that seems like a great way forward. OpenACC directives could > be very nice to include, as they really are device independent. > > My concerns are: > > - decrease portability, as mentioned earlier > - increasing the barrier to entry to get up and running, e.g. build the > system, users will have more documentation to read and compiler flags to learn > - code readability, more tokens makes code harder to grok > > It sounds like you have a lot of enthusiasm though. Your work is likely to > benefit the whole community. Good luck :) > _______________________________________________ > nupic mailing list > [email protected] > http://lists.numenta.org/mailman/listinfo/nupic_lists.numenta.org
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