Thanks Imran. I'm attaching a modified version of test_gpuarray.py, for devices that don't support double precision, in case this is useful to anyone else.
I made simple changes to check whether the device being tested supports double precision, and if it doesn't, skip tests that require double precision. test_random, test_minmax, and test_subset_minmax were modified to skip the 64 bit tests. test_astype gets skipped altogether, since this seems to test conversion from single to double precision. test_complex_bits simply gets skipped as I couldn't figure out a way to make it work with a single precision type. Anyway, I'm a novice to this, so I wouldn't advocate integrating these changes unless someone else looks it over. I hope this is helpful. Thanks for the responses guys. Chethan On Sun, Apr 25, 2010 at 2:38 PM, Imran Haque <iha...@stanford.edu> wrote: > Hi Chethan, > > Devices of compute capability 1.3 do support double. 1.2 and lower do not. > > Imran > > Chethan Pandarinath wrote: > >> Hi Bryan, thanks for the quick reply. I understand the issue now. >> >> So it looks like any devices of compute capability 1.x would not have >> support for double precision (from section 5.1.1.1 of the NVIDIA CUDA >> Programming Guide). >> >> Does this seem like a reasonable way of checking for double precision >> support in the test script? e.g., : >> >> import pycuda.driver as cuda >> dev=cuda.Device(0); >> if dev.compute_capability() < (2,0): >> no double precision support, don't run those tests... >> >> >> >> >> On Fri, Apr 23, 2010 at 9:07 PM, Bryan Catanzaro < >> bryan.catanz...@gmail.com <mailto:bryan.catanz...@gmail.com>> wrote: >> >> The GPU in your MacBook doesn't support double precision, which is >> why these tests are failing. You're of course welcome to change the >> tests so that they check for >> double precision support before running them - that would probably >> help out others who end up in this situation. >> >> - bryan >> >> On Apr 23, 2010, at 5:41 PM, Chethan Pandarinath >> <chethan.pandarin...@gmail.com >> <mailto:chethan.pandarin...@gmail.com>> wrote: >> >> Hi everybody, >>> >>> I've been working on installing PyCUDA on my MacBook (Snow >>> Leopard). I think I'm close to having it working, it's been quite >>> a long road: getting compatible versions of boost, setuptools, >>> pytools... anyway, I think I'm past all that. >>> >>> I can now successfully run test_math.py and test_driver.py with no >>> errors. >>> >>> I am having trouble, however, with test_gpuarray.py >>> >>> I'm attaching the output from running the test script, with the >>> standard error appended as well. >>> $ arch -i386 python test_gpuarray.py >test_gpuarray_output.txt >>> >>> >>> There are a couple types of errors that I can see here: >>> >>> E AssertionError: (array(-4.2129004090721698e+36), >>> -1.2509687918788644e+303, <type 'numpy.float64'>, 'min') >>> test_gpuarray.py:328: AssertionError >>> >>> E assert array(-6.0786212321272663e+144) == >>> -2.6357594520767543e+301 >>> test_gpuarray.py:357: AssertionError >>> >>> E LaunchError: cuCtxPopCurrent failed: launch failed >>> /Library/Python/2.6/site-packages/pycuda/tools.py:504: LaunchError >>> >>> E RuntimeError: make_default_context() wasn't able to >>> create a context on any of the 1 detected devices >>> /Library/Python/2.6/site-packages/pycuda/tools.py:216: RuntimeError >>> >>> >>> To tell you the truth I don't know how to begin debugging this. If >>> anyone can point me in the right direction, I'd greatly appreciate >>> it. Willing to provide any info that would help... >>> >>> I'm running this on a MacBook, Snow Leopard (10.6.3), with an >>> NVIDIA GeForce 9400M. Using Python 2.6.1. >>> >>> Thanks. >>> Chethan >>> >>> >>> >>> -- Chethan Pandarinath >>> <mailto:chethan.pandarin...@gmail.com>chethan.pandarin...@gmail.com >>> <mailto:chethan.pandarin...@gmail.com> >>> >>> <test_gpuarray_output.txt> >>> _______________________________________________ >>> PyCUDA mailing list >>> pyc...@host304.hostmonster.com <mailto:pyc...@host304.hostmonster.com >>> > >>> >>> http://host304.hostmonster.com/mailman/listinfo/pycuda_tiker.net >>> >> >> >> >> >> -- >> Chethan Pandarinath >> chethan.pandarin...@gmail.com <mailto:chethan.pandarin...@gmail.com> >> >> >> ------------------------------------------------------------------------ >> >> >> _______________________________________________ >> PyCUDA mailing list >> pyc...@host304.hostmonster.com >> http://host304.hostmonster.com/mailman/listinfo/pycuda_tiker.net >> > -- Chethan Pandarinath chethan.pandarin...@gmail.com
test_gpuarray_mod.py
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