Re: upgrade to jessie from wheezy with cuda problems
On Wed, Nov 13, 2013 at 10:13:15AM +0100, Francesco Pietra wrote:
> >
> > I think it was renamed. No idea why. modinfo nvidia-current should
> > work though.
>
> Yes, it does.
>
> Do you have the cuda libraries for the 319 version installed?
>
> Yes
>
>
> I don't play around with GPU computations, but from what I have read it
> > does need a certain size job before the overhead of transfering the
> > data and managing the GPU makse it worthwhile, but for large jobs the
> > high core count and memory bandwidth makes a big difference.
>
>
> 500,000 atoms, as in my test, is a large system for unbiased molecular
> dynamics. At any event, I looked at the the nvidia-cuda-toolkit version
> 5.0. nvidia for GPU Computing SDK, to build examples that should include a
> bandwidth test, offers linux packages for Fedora RHEL Ubuntu OpenSUSE and
> SUSE. No Debian. I had unpleasant experiences with Ubuntu packages, and it
> is well known that Ubuntu, unlike LinuxMint, is not compatible with Debian.
> Therefore, I did not try the cuda toolkit. I wonder why Ubuntu has so
> widely replaced Debian among the mass. Sad, and somewhat irritating, for me.
>
> I tried
> francesco@gig64:~/tmp$ ls
> CUDA-Z-0.7.189.run
> francesco@gig64:~/tmp$ ./CUDA-Z-0.7.189.run
> CUDA-Z 0.7.189 Container
> Starting CUDA-Z...
> /home/francesco/tmp/CUDA-Z-657a-580e-a8aa-0faa/cuda-z: error while loading
> shared libraries: libXrender.so.1: cannot open shared object file: No such
> file or directory
Try:
LD_LIBRARY_PATH=. ./CUDA-Z-0.7.189.run
See if it finds that lirary then.
> francesco@gig64:~/tmp$ ls
> CUDA-Z-0.7.189.run libXrender.so.1
> francesco@gig64:~/tmp$ ./CUDA-Z-0.7.189.run
> CUDA-Z 0.7.189 Container
> Starting CUDA-Z...
> /home/francesco/tmp/CUDA-Z-a3db-49bf-8cb7-059d/cuda-z: error while loading
> shared libraries: libXrender.so.1: cannot open shared object file: No such
> file or directory
> francesco@gig64:~/tmp$
>
> Actually the required lib is available, as shown by my copy into tmp. I
> don't remember the source of this GNU CUDA-Z tool. Any experience with?
>
> I have also met reports of unexciting experience with PCIe 3.0, that is
> meager or no gain over PCIe 2.0, however it deals of people carrying out
> games, which is different from NAMD molecular dynamics, where most is done
> by the GPUs but AT EACH STEP energy has to be calculated by the CPU.
I see a package in Debian named 'nvidia-cuda-toolkit'. Does that include
that you were looking for? I guess the bandwidthtest isn't built normally.
--
Len Sroensen
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