PyOpenCL November 2014

pyopencl@tiker.net

6 participants
4 discussions

by Lars Callenbach

Hello, I have tried to compile a simple opencl program using pyopencl. --- __kernel void Pricing(__global float* simResults, __global const unsigned int *d_MT, __global const unsigned int *para, __global const float *simPara, __global const float *dt ) { ... } --- Everything works fine for AMD (CPU) but for NVIDIA I get a compilation error: --- Choose platform: [0] <pyopencl.Platform 'NVIDIA CUDA' at 0x2ea9450> [1] <pyopencl.Platform 'AMD Accelerated Parallel Processing' at 0x7f2ef9485de0> Choice [0]: Set the environment variable PYOPENCL_CTX='' to avoid being asked again. Workers 2 self.CLProgram.Pricing(self.queue, (16384,), (2,), self.parameterList[0], self.parameterList[1], self.parameterList[2], self.parameterList[3], self.parameterList[4]) Traceback (most recent call last): File "test_ProductPricing.py", line 171, in <module> res = instance.executeProgram(CODE, 'Pricing', para, (data_points,) , (workers,) ) File "/work/pythonopencl/opencl/clinterface.py", line 82, in executeProgram exec_event = eval(command) File "<string>", line 1, in <module> File "/usr/lib64/python2.7/site-packages/pyopencl-2014.1-py2.7-linux-x86_64.egg/pyopencl/__init__.py", line 523, in kernel_call global_offset, wait_for, g_times_l=g_times_l) pyopencl.LogicError: clEnqueueNDRangeKernel failed: invalid value --- I have assumed that OpenCL programs are flexible in the sense that I can execute them on different hardware platforms (in general it works for all examples provided in the pyopencl package). Does anybody have an idea why it is not working for cuda although it works for AMD? Best regards, Lars

6 years, 1 month

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6 years, 2 months

Re: [PyOpenCL] Import Error - Yosemite and Xcode 6.1

by Andreas Kloeckner

Gavin, Gavin Coombes <gav(a)darkseas.org> writes: > Seems to be having the the same dynamic lookup issue still. > I removed the build directory, installed as you suggested, ain a new shell... Please make sure to keep the list cc'd. Try CC=g++ LDSHARED="gcc -bundle -undefined dynamic_lookup" \ BLDSHARED="gcc -bundle -undefined dynamic_lookup" python setup.py \ install as before. Andreas

6 years, 2 months

Import Error - Yosemite and Xcode 6.1

by Gavin Coombes

HI all, I have used PyOpenCl successfully on Windows and Linux platforms but thought to take the Iris Pro graphics for a drive on a new MBP. However, I have had problems getting started. Hope someone can help me find a solution, or suggest some better diagnostics to lay bare the issue. I’m using * Yosemite OS X 10.10 * Xcode 6.1 * Anaconda Python * Numpy 1.9 * gcc 4.2.1 I have followed the Mavericks installation guide at http://wiki.tiker.net/PyOpenCL/Installation/Mac <http://wiki.tiker.net/PyOpenCL/Installation/Mac>, with a few warnings that didn’t seem too serious, mainly deprecated numpy warnings and string to char * warnings. There was a ctags error on make: ➜ pyopencl git:(master) make ctags -R src || true /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ctags: illegal option -- R usage: ctags [-BFadtuwvx] [-f tagsfile] file … And the main error was on the import of pyopencl. ➜ cl ipython Python 2.7.8 |Anaconda 2.1.0 (x86_64)| (default, Aug 21 2014, 15:21:46) Type "copyright", "credits" or "license" for more information. IPython 2.2.0 -- An enhanced Interactive Python. Anaconda is brought to you by Continuum Analytics. Please check out: http://continuum.io/thanks and https://binstar.org ? -> Introduction and overview of IPython's features. %quickref -> Quick reference. help -> Python's own help system. object? -> Details about 'object', use 'object??' for extra details. In [1]: import pyopencl --------------------------------------------------------------------------- ImportError Traceback (most recent call last) <ipython-input-1-63105a952239> in <module>() ----> 1 import pyopencl //anaconda/lib/python2.7/site-packages/pyopencl-2014.1-py2.7-macosx-10.5-x86_64.egg/pyopencl/__init__.py in <module>() 28 29 try: ---> 30 import pyopencl._cl as _cl 31 except ImportError: 32 import os ImportError: dlopen(//anaconda/lib/python2.7/site-packages/pyopencl-2014.1-py2.7-macosx-10.5-x86_64.egg/pyopencl/_cl.so, 2): Symbol not found: __ZNSbIwSt11char_traitsIwESaIwEE4_Rep20_S_empty_rep_storageE Referenced from: //anaconda/lib/python2.7/site-packages/pyopencl-2014.1-py2.7-macosx-10.5-x86_64.egg/pyopencl/_cl.so Expected in: dynamic lookup The full install log is attached. Thanks for any help, Gavin.

6 years, 2 months

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PyOpenCL November 2014