[PyCUDA] PyCUDA Digest, Vol 31, Issue 3

[Bryan Absher]

Make sure you have the latest version of the Nvidia drivers installed.
In my case with ubuntu i had to get the upstream drivers.
____________
Bryan Absher



On Sat, Jan 8, 2011 at 12:00 PM,  <pycuda-request at tiker.net> wrote:
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> Today's Topics:
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>   1. Re: Problems compling (Patrick Herron)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 7 Jan 2011 20:27:51 +0000 (UTC)
> From: Patrick Herron <patrick.h at duke.edu>
> To: pycuda at tiker.net
> Subject: Re: [PyCUDA] Problems compling
> Message-ID: <loom.20110107T211320-190 at post.gmane.org>
> Content-Type: text/plain; charset=us-ascii
>
> Andreas Kloeckner <lists at ...> writes:
>
>>
>> Hi Bryan,
>>
>> On Fri, 1 Oct 2010 21:10:27 -0700, Bryan Absher
>> <bryan.absher at ...> wrote:
>> > I have heard great things about the pycuda, if only it would run. Here
>> > is the output to the test_driver.py
>> >
>> > $ python ./test_driver.py
>> > Traceback (most recent call last):
> [...]
>>
>> My suspicion would be that /usr/lib/nvidia-current/libcuda.so.1 is not
>> the current (3.2) version of libcuda.so. (But it seems you're compiling
>> against 3.2 headers, which gives you unavailable symbol errors. You can
>> easily check for a 3.2 libcuda yourself:
>>
>> I get:
>> nm -D /usr/lib/libcuda.so | grep cuMemAllocPitch_v2
>> 000000000015c0e0 T cuMemAllocPitch_v2
>>
>> Try
>>
>> nm -D /usr/lib/nvidia-current/libcuda.so.1 | grep cuMemAllocPitch_v2
>>
>> If you get empty output, you have an old version.
>>
>> HTH,
>> Andreas
>>
>>
>
>
> I too am very eager to use PyCUDA. After some effort I was finally able to
> install on my RHEL5.5 system using
> [root at netreg-536608 doc]# CC=gcc44 make install
> This solved a host of build errors. Your advice on this and other forums has
> been very helpful.
> Unfortunately when I run the test code I get a very similar error to the one
> described above. Further, when I use the above nm command I get empty output,
> which you suggest means I don't have 3.2 drivers. Yet I (only) have 3.2 drivers
> installed.
>
> Error:
>
> [root at netreg-536608 test]# python test_driver.py
> Traceback (most recent call last):
>  File "test_driver.py", line 4, in ?
>    from pycuda.tools import mark_cuda_test
>  File
> "/usr/lib64/python2.4/site-packages/pycuda-0.94.2-py2.4-linux-x86_64.egg/
> pycuda/tools.py",
> line 30, in ?
>    import pycuda.driver as cuda
>  File
> "/usr/lib64/python2.4/site-packages/pycuda-0.94.2-py2.4-linux-x86_64.egg/
> pycuda/driver.py",
> line 1, in ?
>    from pycuda._driver import *
> ImportError:
> /usr/lib64/python2.4/site-packages/pycuda-0.94.2-py2.4-linux-x86_64.egg/
> pycuda/_driver.so:
> undefined symbol: _ZNKSt5ctypeIcE13_M_widen_initEv
>
>
> [root at netreg-536608 test]# ldd
> /usr/lib64/python2.4/site-packages/pycuda-0.94.2-py2.4-linux-x86_64.egg/
> pycuda/_driver.so
>
>        libcuda.so.1 => /usr/lib64/libcuda.so.1 (0x00002b095e94d000)
>        libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00002b095f3b4000)
>        libm.so.6 => /lib64/libm.so.6 (0x00002b095f6b4000)
>        libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00002b095f938000)
>        libpthread.so.0 => /lib64/libpthread.so.0 (0x00002b095fb46000)
>        libc.so.6 => /lib64/libc.so.6 (0x00002b095fd61000)
>        libz.so.1 => /usr/lib64/libz.so.1 (0x00002b09600b9000)
>        libdl.so.2 => /lib64/libdl.so.2 (0x00002b09602cd000)
>        /lib64/ld-linux-x86-64.so.2 (0x0000003d81600000)
>
> [root at netreg-536608 doc]# nm -D /usr/lib64/libcuda.so | grep
> _ZNKSt5ctypeIcE13_M_widen_initEv
>
>
>
> [root at netreg-536608 doc]#
> /root/NVIDIA_GPU_Computing_SDK/C/bin/linux/release/deviceQuery
> Device 0: "Tesla C2070"
>  CUDA Driver Version:                           3.20
>  CUDA Runtime Version:                          3.20
> [...]
>
>
> Thanks in advance!
>
>
>
>
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> End of PyCUDA Digest, Vol 31, Issue 3
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