Hello, When I try to compile ROOT with cuda support for TMVA (Ubuntu 16.04, root 6.10.04, cmake option: “-Dcuda=ON”) I get the following error message: [ 81%] Building NVCC (Device) object tmva/tmva/CMakeFiles/dnn_cuda.dir/src/DNN/Architectures/Cuda/dnn_cuda_generated_CudaMatrix.cu.o nvcc warning…

HI Andreas, Is the file TMVA/DNN/Architectures/Cuda/CudaMatrix.h present in your build directory ? It should be installed under build_dir/include/TMVA… If this is the case but the file is not found, maybe there is an issue with finding the file with nvcc. Can you send me the output in this cas…

Dear Lorenzo, Yes, the file is present: root_v6.10.04-build/include/TMVA/DNN/Architectures/Cuda/CudaMatrix.h Running make -j1 VERBOSE=1, I get: [ 81%] Building NVCC (Device) object tmva/tmva/CMakeFiles/dnn_cuda.dir/src/DNN/Architectures/Cuda/dnn_cuda_generated_CudaMatrix.cu.o cd /home/andreas/Sc…

Hi, I see the include path is not set in the CUDA compilation. Can you maybe try adding this line in the tmva/tmva/CMakeLists.txt CUDA_INCLUDE_DIRECTORIES(${ROOT_INCLUDE_DIRS}) in the section where CUDA is found if(CUDA_FOUND) CUDA_INCLUDE_DIRECTORIES(${ROOT_INCLUDE_DIRS}) CUDA_ADD_LIBRARY(dnn_…

Actually the correct line to add is CUDA_INCLUDE_DIRECTORIES("${CMAKE_BINARY_DIR}/include") I have committed a fix in the master, see https://github.com/root-project/root/commit/c1bc3daf741cee9f2928bdf90b4f59ed6af5db3e Lorenzo

Hi Lorenzo, Everything works now. Thanks a lot! Andreas

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Trouble compiling ROOT with CUDA support for TMVA

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