I forgot to mention that I am using the latest clang-llvm-openmp versions of source code (10.0.0). ---------- Forwarded message --------- From: mashilamani sambasivam <kandanarul1...@gmail.com> Date: Fri, Jul 3, 2020 at 10:56 AM Subject: omp_get_num_devices() returns 0 even though I have GPUs To: <cfe-users@lists.llvm.org>
Hi, I am trying to offload to my GPUs. I have GTX1060 6GB with compute capability of 6.1. I followed the instructions given in https://hpc-wiki.info/hpc/Building_LLVM/Clang_with_OpenMP_Offloading_to_NVIDIA_GPUs Then I compiled my helloworld program using the following environment variables: CFLAGS="-fopenmp -fopenmp-targets=nvptx64-sm_61 -pthread -I /usr/lib/gcc/x86_64-linux-gnu/9/include -O2 --libomptarget-nvptx-path=$CLANG_HOME/lib --cuda-gpu-arch=sm_61" LD_LIBRARY_PATH=$CLANG_HOME/lib:$LD_LIBRARY_PATH CC=clang my helloworld program simply printfs omp_get_num_devices() after #including <omp.h> it compiles fine; but when i run it i get the number of devices as 0. Does someone have any idea? Thanks much, Mani
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