[CMake] FindCUDA fails to find libcuda.so

[Marcel Loose]

Hi Robert,

I agree that on the CentOS machine the install paths are non-standard. 
For the Ubuntu system, on the other hand, I have to disagree with that 
statement. It is a *standard* Ubuntu 12.10 system, so IMHO 
FindCUDA.cmake should be able to locate libcuda.so on that system.

Regards,
Marcel Loose.

On 29/04/13 16:54, Robert Maynard wrote:
> You have a nonstandard install path that will require you to use
> CUDA_PATH / CUDA_BIN_PATH and CUDA_LIB_PATH.
>
> On Mon, Apr 29, 2013 at 10:10 AM, Marcel Loose <loose at astron.nl> wrote:
>> Hi,
>>
>> It fails to find CUDA 5.0. See below.
>>
>> $ env | grep CUDA
>> CUDA_PATH=/cm/shared/apps/cuda50/toolkit/5.0.35
>> CUDA_INC_PATH=/cm/shared/apps/cuda50/toolkit/5.0.35
>> CUDA_SDK=/cm/shared/apps/cuda50/sdk/5.0.35
>> CUDA_CACHE_DISABLE=1
>> CUDA_INSTALL_PATH=/cm/shared/apps/cuda50/toolkit/5.0.35
>> CUDA_ROOT=/cm/local/apps/cuda50/libs/304.54
>>
>> $ cat ../CMakeLists.txt
>> cmake_minimum_required(VERSION 2.8)
>> project(CheckCUDALibs)
>> find_package(CUDA)
>> message(STATUS "CUDA_LIBRARIES = ${CUDA_LIBRARIES}")
>>
>> $ cmake ..
>> -- The C compiler identification is GNU
>> -- The CXX compiler identification is GNU
>> -- Check for working C compiler: /usr/bin/gcc
>> -- Check for working C compiler: /usr/bin/gcc -- works
>> -- Detecting C compiler ABI info
>> -- Detecting C compiler ABI info - done
>> -- Check for working CXX compiler: /usr/bin/c++
>> -- Check for working CXX compiler: /usr/bin/c++ -- works
>> -- Detecting CXX compiler ABI info
>> -- Detecting CXX compiler ABI info - done
>> -- Found CUDA: /cm/shared/apps/cuda50/toolkit/5.0.35 (found version "5.0")
>> -- CUDA_LIBRARIES = /cm/shared/apps/cuda50/toolkit/5.0.35/lib64/libcudart.so
>> -- Configuring done
>> -- Generating done
>> -- Build files have been written to: /home/loose/temp/cmake/cuda/build
>>
>> $ CUDA_LIB_PATH=$CUDA_ROOT/lib cmake ..
>> -- CUDA_LIBRARIES =
>> /cm/shared/apps/cuda50/toolkit/5.0.35/lib64/libcudart.so;/cm/local/apps/cuda50/libs/304.54/lib64/libcuda.so
>> -- Configuring done
>> -- Generating done
>> -- Build files have been written to: /home/loose/temp/cmake/cuda/build
>>
>> Only when explicitly setting CUDA_LIB_PATH, libcuda.so is found.
>>
>> BTW: On Ubuntu I also need to set CUDA_LIB_PATH, but then to
>> /usr/lib/nvidia-current.
>>
>> Regards,
>> Marcel Loose.
>>
>>
>>
>> On 29/04/13 15:36, Robert Maynard wrote:
>>> Can you provide what Cuda version FindCuda is failing to find, and
>>> where Cluster Manager is installing the CUDA toolkit and library?
>>>
>>> On Mon, Apr 29, 2013 at 7:38 AM, Marcel Loose <loose at astron.nl> wrote:
>>>> Hi all,
>>>>
>>>> I noticed that FindCUDA.cmake fails to locate libcuda.so on at least two
>>>> different platforms: Ubuntu 12.10 and CentOS 6.3 using Cluster Manager
>>>> v5.2.
>>>> I can persuade FindCUDA.cmake to search for this library by explicitly
>>>> setting the environment variable CUDA_LIB_PATH, and then it finds it.
>>>> However, IMHO, using this trick should only be necessary as a last
>>>> resort.
>>>> Is this a bug?
>>>>
>>>> Best regards,
>>>> Marcel Loose.
>>>>
>>>>
>>>>
>>>>
>>>>
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