Mark, Couple of thoughts based on some experience with OpenCL...
1. This may be going outside the proposed purpose, but some algorithms such as molecular simulations can benefit from a fairly large amount of constant data loaded at the beginning of the program and persisted in between invocations of a function. If I understand the proposal, entire program would need to be within one `with` block, which would certainly be limiting to the architecture. Eg. # run.py from cython_module import Evaluator # Arrays are loaded into device memory here x = Evaluator(params...) for i in range(N): # Calculations are performed with # mostly data in the device memory data_i = x.step() ... 2. AFAIK, given a device, OpenCL basically takes it over (which would be eg. 8 cores on 2 CPU x 4 cores machine), so I'm not sure how `num_cores` parameter would work here. There's the fission extension that allows you to selectively run on a portion of the device, but the idea is that you're still dedicating entire device to your process, but merely giving more organization to your processing tasks, where you have to specify the core numbers you want to use. I may very well be wrong here, bashing is welcome :) 3. Does it make sense to make OpenCL more explicit? Heuristics and automatic switching between, say, CPU and GPU is great for eg. Sage users, but maybe not so much if you know exactly what you're doing with your machine resources. E.g just having a library with thin cython-adapted wrappers would be awesome. I imagine this can be augmented by arrays having a knowledge of device-side/client-side (which would go towards addressing the issue 1. above) Cheers, Dimitri. On Sun, Feb 5, 2012 at 1:57 PM, mark florisson <markflorisso...@gmail.com> wrote: > Hey, > > I created a CEP for opencl support: http://wiki.cython.org/enhancements/opencl > What do you think? > > Mark > _______________________________________________ > cython-devel mailing list > cython-devel@python.org > http://mail.python.org/mailman/listinfo/cython-devel _______________________________________________ cython-devel mailing list cython-devel@python.org http://mail.python.org/mailman/listinfo/cython-devel
