nvprof not working in Ubuntu 12.04

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1

I’m having a problem getting nvprof working under Ubuntu 12.04. I posted about it over at http://askubuntu.com/q/278845/88229 but I suspect it’s really a problem with nvprof itself and not Ubuntu so I’ll ask here as well.

The short of it is this: I have the latest CUDA toolkit up and running on an Ubuntu 12.04 server. I can compile and run the sample code and have written, compiled, and run some code of my own as well. cuda-memcheck works just fine as well as the older command line profiler. I have not tried the nvvp because I don’t have a GUI installed on this system. So, by all accounts everything is running just fine except nvprof.

When I run nvprof I get this error

Error: unable to locate profiling library libcuinj64.so.5.0.35.

I am 99.9% certain that library is properly installed (see the askubuntu link if you want to know more) and now I’m at a loss as to what to do next. Anyone have any thoughts?

2

Can you verify that you have /usr/local/cuda/lib64 in your LD_LIBRARY_PATH? If not, please add it and try again.

3

Yes. It’s there. Running

ldconfig -v

shows all the CUDA libraries properly loaded.

/usr/local/cuda-5.0/lib:
    libcurand.so.5.0 -> libcurand.so.5.0.35
    libnpp.so.5.0 -> libnpp.so.5.0.35
    libcusparse.so.5.0 -> libcusparse.so.5.0.35
    libcufft.so.5.0 -> libcufft.so.5.0.35
    **libcuinj32.so.5.0 -> libcuinj32.so.5.0.35**
    libcudart.so.5.0 -> libcudart.so.5.0.35
    libnvToolsExt.so.5.0 -> libnvToolsExt.so.5.0.35
    libcublas.so.5.0 -> libcublas.so.5.0.35
/usr/local/cuda-5.0/lib64:
    libcurand.so.5.0 -> libcurand.so.5.0.35
    libcuinj64.so.5.0 -> libcuinj64.so.5.0.35
    libnpp.so.5.0 -> libnpp.so.5.0.35
    libcusparse.so.5.0 -> libcusparse.so.5.0.35
    libcufft.so.5.0 -> libcufft.so.5.0.35
    libcudart.so.5.0 -> libcudart.so.5.0.35
    libnvToolsExt.so.5.0 -> libnvToolsExt.so.5.0.35
    libcublas.so.5.0 -> libcublas.so.5.0.35

I’ve even tried running nvprof with the LD_PRELOAD trick (

LD_PRELOAD=/path/to/lib nvprof myprogram
4

I am also facing the same issue. @jlmayfield4 please let me know if you have resolved the issue. Thanks!

5

There is a solution to this problem over here [url]http://askubuntu.com/a/305097/88229[/url] on askubuntu.

6

Thank you Logan for the solution to fix the nvprof error unable to locate profiling library libcuinj64.so.5.0.35. I followed the solution and now I am able to run nvprof, but only as the root or super user. Any idea how to enable it for all users? Thanks for your time and help!

7

The problem mentioned above is related to sudo use permissions. One needs to add the user to the sudo users group and everything should be good to go.