When Boinc starts i get message "Can't load library libcudart" and "No coprocessors". I use Ubuntu Intrepid 64-bit, nVidia driver 177.82, Boinc 6.4.5 and my graphic card is GeForce 8400M GS. What can I do to run GPUGrid on my machine?

When Boinc starts i get message "Can't load library libcudart" and "No coprocessors". I use Ubuntu Intrepid 64-bit, nVidia driver 177.82, Boinc 6.4.5 and my graphic card is GeForce 8400M GS. What can I do to run GPUGrid on my machine?

I have the same issue with the exception my card is a 9600GSO. I started an identical box several days ago and after repeated tries finally got it to work. I have tried this second box all day without success.

More google, I guess:(

mike

Don't know much about the joys of installing under Linux.. but I remember reading something about manually placing this "libcudart" somewhere. Maybe searching this forum yields more information.

MrS

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Scanning for our furry friends since Jan 2002

wget http://boinc.berkeley.edu/dl/boinc_6.4.5_x86_64-pc-linux-gnu.sh
sh boinc_6.4.5_x86_64-pc-linux-gnu.sh
invoke-rc.d boinc-client stop
cd BOINC
cp libcudart.so /var/lib/boinc-client #or where ever you installed your BOINC, this directory is the Debian/Ubuntu default
invoke-rc.d boinc-client start

...this should be enough

edit:

please ensure that the user that runs BOINC is member of the group video. In a default Ubuntu/Debian BOINC setup this is not the case for user boinc

All this should not be necessary.
Are you using an up-to-date boinc version like 6.4.5?

gdf

thanks, your advise works for me and now boinc can use libcudart.so.
i've used getdeb package to install boinc 6.4.5 and it doesn't install libcudart.so in boinc data directory. it must be downloaded and copied manualy as you said.

but...

strange thing happened and my boinc says now "No CUDA devices found" and "No coprocessors"
I use the newest driver, my card GeForce 8400M GS is on nVIDAIA's CUDA supported list http://www.nvidia.com/object/cuda_learn_products.html

So where is the problem now? Why can't boinc see my GPU?

So you installed BOINC from a .deb package? Which user runs BOINC, is it the boinc user that was created during the install? Then you need to add him to the group video, otherwise he is not allowed to access the video card.

The concept of copying worked for me.

More precisely I created a symlink in the boic libs folder

user@host:/var/lib/boinc-client$ sudo ln -s /usr/local/cuda/lib/libcudart.so libcudart.so

then

sudo /etc/init.d/boinc-client restart

and I get:

Sun 11 Jan 2009 11:43:57 AM CET||CUDA devices found
Sun 11 Jan 2009 11:43:57 AM CET||Coprocessor: GeForce 8500 GT (1)

*Cheers*