[OMPI users] Build Open-MPI without OpenCL support
Hello, How can I compile openmpi without the support of open-cl? The only link I could find is [1], but openmpi doesn't configure this option. The reason why I'm trying to build openmpi without open-cl is it throws the following errors even with the nvidia installed opencl. ./mpicc -I/usr/local/cuda-8.0.61/lib64 -lcuda test_cuda_aware.c -o myapp ./mpicc: /usr/local/cuda-8.0.61/lib64/libOpenCL.so.1: no version information available (required by /home/kokanen/opt/lib/libopen-pal.so.20) /tmp/cc7KaPDe.o: In function `main': test_cuda_aware.c:(.text+0x5b): undefined reference to `cudaMalloc' test_cuda_aware.c:(.text+0xd3): undefined reference to `cudaFree' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetPlatformInfo@OPENCL_1.0' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetPlatformIDs@OPENCL_1.0' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetDeviceInfo@OPENCL_1.0' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetDeviceIDs@OPENCL_1.0' [1]. https://www.open-mpi.org/projects/hwloc/doc/v1.7.2/a00014.php -- Regards, Nilesh Kokane ___ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
Re: [OMPI users] Build Open-MPI without OpenCL support
On Fri, Sep 8, 2017 at 3:33 PM, Gilles Gouaillardet wrote: > > Nilesh, > > Can you > configure --without-nvidia ... > And see if it helps ? No, I need Nvidia cuda support. //Nilesh Kokane ___ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
Re: [OMPI users] Build Open-MPI without OpenCL support
On Fri, Sep 8, 2017 at 4:08 PM, Nilesh Kokane wrote: > On Fri, Sep 8, 2017 at 3:33 PM, Gilles Gouaillardet > wrote: >> >> Nilesh, >> >> Can you >> configure --without-nvidia ... >> And see if it helps ? > > No, I need Nvidia cuda support. Or else do you have a way to solve this open-cl errors? ./mpicc -I/usr/local/cuda-8.0.61/lib64 -lcuda test_cuda_aware.c -o myapp ./mpicc: /usr/local/cuda-8.0.61/lib64/libOpenCL.so.1: no version information available (required by /home/kokanen/opt/lib/libopen-pal.so.20) /tmp/cc7KaPDe.o: In function `main': test_cuda_aware.c:(.text+0x5b): undefined reference to `cudaMalloc' test_cuda_aware.c:(.text+0xd3): undefined reference to `cudaFree' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetPlatformInfo@OPENCL_1.0' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetPlatformIDs@OPENCL_1.0' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetDeviceInfo@OPENCL_1.0' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetDeviceIDs@OPENCL_1.0' Pointing to -L/usr/local/cuda-8.0.61/lib64 while compiling with mpicc didn't help. Any clues? -- Regards, Nilesh Kokane ___ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
Re: [OMPI users] Build Open-MPI without OpenCL support
On Fri, Sep 8, 2017 at 4:45 PM, Gilles Gouaillardet wrote: > can you > ./mpicc -showme -I/usr/local/cuda-8.0.61/lib64 -lcuda test_cuda_aware.c -o > myapp > and double check -lcuda is *after* -lopen-pal ? gcc -I/usr/local/cuda-8.0.61/lib64 -lcuda test_cuda_aware.c -o myapp -I/home/kokanen/opt/include -pthread -Wl,-rpath -Wl,/home/kokanen/opt/lib -Wl,--enable-new-dtags -L/home/kokanen/opt/lib -lmpi -- Regards, Nilesh Kokane ___ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
Re: [OMPI users] Build Open-MPI without OpenCL support
On Fri, Sep 8, 2017 at 11:43 PM, Sylvain Jeaugey wrote: > To solve the undefined references to cudaMalloc and cudaFree, you need to > link the CUDA runtime. So you should replace -lcuda by -lcudart. If I compile with the following option: ./mpicc -I/usr/local/cuda-8.0.61/include -lOpenCL test_cuda_aware.c -o myapp I get: ./mpicc: /usr/local/cuda-8.0.61/lib64/libOpenCL.so.1: no version information available (required by /home/kokanen/opt/lib/libopen-pal.so.20) /tmp/cceiNnHc.o: In function `main': test_cuda_aware.c:(.text+0x5b): undefined reference to `cudaMalloc' test_cuda_aware.c:(.text+0xd3): undefined reference to `cudaFree' collect2: error: ld returned 1 exit status And the movement I try compiling giving the option /usr/local/cuda-8.0.61 : ./mpicc -I/usr/local/cuda-8.0.61/include -lOpenCL -L/usr/local/cuda-8.0.61/lib64 -lcudart test_cuda_aware.c -o myapp I get: /tmp/cchauUBT.o: In function `main': test_cuda_aware.c:(.text+0x5b): undefined reference to `cudaMalloc' test_cuda_aware.c:(.text+0xd3): undefined reference to `cudaFree' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetPlatformInfo@OPENCL_1.0' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetPlatformIDs@OPENCL_1.0' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetDeviceInfo@OPENCL_1.0' /home/kokanen/opt/lib/libopen-pal.so.20: undefined reference to `clGetDeviceIDs@OPENCL_1.0' collect2: error: ld returned 1 exit status So my inference is if it tries to link the nvidia opencl this issue arises. Also the application is not able to link the -lcudart. I back checked and made sure that I have libcudart. /usr/local/cuda-8.0.61/lib64/libcudart.so.8.0.61 any clue? > For the OPENCL undefined references, I don't know where those are coming > from ... could it be that hwloc is compiling OpenCL support but not adding > -lOpenCL to the mpicc command, thus causing this issue ? Could be. > To work around the issue, I would try to uninstall the opencl libraries > before recompiling Open MPI. Another way could be to add manually the OpenCL > library with -lOpenCL. Yes, if I dont give the option -L/usr/local/cuda-8.0.61 opencl linking goes off as it links to the system one, but error like test_cuda_aware.c:(.text+0x5b): undefined reference to `cudaMalloc' test_cuda_aware.c:(.text+0xd3): undefined reference to `cudaFree' giving -lcudart doesn't help. -- Regards, Nilesh Kokane ___ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
