5 ms·

Yeah, I got the runtime down from 40min to 10min. Then I implemented a Python->CUDA compiler and got it down to 30sec. :)

• angusgr 16y ago
  I implemented a Python->CUDA compiler Wow, interesting. Is it released somewhere? Googling found me the Copperhead project[1], was that what you used? I'm not sure if "implemented" means you implemented your code for it, or you implemented the entire compiler. :) [1] http://code.google.com/p/copperhead/ http://code.google.com/p/copperhead/
  • wkornewald 16y ago
    No, it's a custom implementation of a simple compiler. It's nothing complicated. It converts Python to C++ and compiles that with nvcc. It also supports numpy arrays. It doesn't do any complex optimization steps like a full compiler. It's more like Cython, actually (with type annotations via an @gpu decorator). This allowed me to take my Python image processing code almost literally and annotate it with @gpu. The code isn't released, yet. I originally wanted use Copperhead and got in contact with the developer a year ago, but it was too early even for "private" beta testing, so I never got access to their code. Also, my compiler is specialized on image processing, so probably Copperhead wouldn't have worked, anyway. I'm only jealous of Copperhead's type inferencer. :) But then again, I have to get finished with my thesis and a type inferencer wouldn't help with that goal. ;)
    • angusgr 16y ago
      Interesting, thanks for explaining. :)