FYI: I was able to get Pyopencl running on Windows 10 using the method outlined in this
The laptop is HP ENVY with I7-6700HQ with Intel 530 graphics and NVidia GeForce GTX 950M.
I was able to get my code working on both graphics cards with no problems using both
Python 2.7 and Python 3.5 based installers from anaconda, and the Pyopencl binaries from
Christoph Golke, (2015 for 2.7, 2016 for 3.5). Python 3.5 is slow in a couple of places,
seemingly due to arbitrary integer precision and the fact I have a couple of while loops
that are 32 bit integer dependent. Indeed, those would not finish on the python 3.5 code.
BUT, Pyopencl worked as expected. I did not run the test suite only my code.
Also, I was able to put Ubuntu 16.04 on this same laptop and get Pyopencl to run with no
problems by using the Ubuntu repository binaries for nvidia-cuda-toolkit and
python-pyopencl. However, I had to disable UEFI secure boot or the NVIDIA drivers would
not load. I need to run the test suite here because I am seeing the following problem with
On Windows everything calculates as expected that is I get the results I expect in my code
test. In Ubuntu there appears to be a problem with my sorting function. (Code on windows
and Ubuntu are exactly the same except for the program working directory.) That is
particles in the simulation appear stacked to one side instead of uniformly randomly
distributed across the simulation grid. If I remove the sorting function that problem goes
away but the final answer I expect (100) is double (200). I see this on my Ubuntu 14.04
workstation with NVidia GTX 780 TI as well.
I assume the problem is in the CUDA toolkit and Pyopencl combination. No other systems
have this behavior. I have the code running on windows on Intel Graphics Cards, AMD
graphics cards, and now NVidia Cards. It doesn't work on Linux. The equivalent Cuda
version works as expected on Linux and an OpenCL version using Scipy Weave inline works as
expected (only a little slower).
Joe Reese Haywood, Ph.D., DABR
Johnson Family Cancer Center
Mercy Health Muskegon
1440 E. Sherman Blvd, Suite 300
Muskegon, MI 49444
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