Environment variables

Here are the environment variables CuPy uses.

CUPY_CACHE_DIR

Path to the directory to store kernel cache. $(HOME)/.cupy.kernel_cache is used by default. See Overview for details.

For install

These environment variables are only used during installation.

CUDA_PATH

Path to the directory containing CUDA. The parent of the directory containing nvcc is used as default. When nvcc is not found, /usr/local/cuda is used. See Install CuPy with CUDA for details.