cannot find -lcuda on Ubuntu 11.04

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi,

I have Ubuntu 11.04 64 bit installed and wanted to try cuda using pycuda.

I tried making the example files of the NVIDIA SDK… I think I installed everything that is necessary, even gcc4.4. But when I type make, it keeps saying, “cannot find -lcuda”. I also tried adding this line in common.mk on line 278, without effect.

What am I missing… what information do you need in order to suggest something helpfull?
Thx.

2

Hi,

Depending on what drivers you have installed, the libcuda.so and so.1 files will be located in slightly different places in Ubuntu. For example, /usr/lib/nvidia-current or /usr/lib/nvidia-current-updates on 11.10 (you should be able to find them at any rate.) The easiest way to point the compiler to the correct libs (IMO) is to symlink them from a more obvious location:

sudo ln -s /usr/lib/nvidia-location/libcuda.so /usr/lib/libcuda.so

sudo ln -s /usr/lib/nvidia-location/libcuda.so1 /usr/lib/libcuda.so1

Hope this helps,

Best,

Graham

3

Arguably the safer option is adding

-L/usr/lib/nvidia-current

to you linker flags. In the case of the CUDA SDK change common.mk:148 to

LINKFLAGS += -L/usr/lib/nvidia-current