> ## Documentation Index > Fetch the complete documentation index at: https://docs.gpuhub.com/llms.txt > Use this file to discover all available pages before exploring further. # OpenCL > OpenCL is a tool that will enable you to perform parallel general-purpose computing on GPUs or other compliant hardware accelerators. If your program uses OpenCL and it fails to work properly after installing OpenCL, you can handle it in the following way: First, check if the nvidia-opencl dynamic link library exists: ```bash bash theme={null} ldconfig -p | grep nvidia-opencl ``` If there is output, it means the library exists (if it does not exist, there is an issue with the system environment; please contact customer service). Then execute the following commands: ```bash bash theme={null} mkdir -p /etc/OpenCL/vendors echo "libnvidia-opencl.so.1" > /etc/OpenCL/vendors/nvidia.icd ``` Finally, check again if OpenCL can be used normally. If it still cannot be used, please contact customer service.