CUDA Minor Version Compatibility
CUDA Minor Version Compatibility (MVC) enables the use of a newer CUDA Toolkit version than the CUDA version supported by the driver, provided that the Toolkit and driver both have the same major version. For example, use of CUDA Toolkit 11.5 with CUDA driver 450 (CUDA version 11.0) is supported through MVC.
Numba supports MVC for CUDA 12 on Linux using the external pynvjitlink
package.
Numba supports MVC for CUDA 11 on Linux using the external cubinlinker and
ptxcompiler packages, subject to the following limitations:
Linking of archives is unsupported.
Cooperative Groups are unsupported, because they require an archive to be linked.
MVC is not supported on Windows.
Installation
CUDA 12
To use MVC support, the pynvjitlink package must be installed. To install
using conda, use:
conda install -c rapidsai pynvjitlink
To install with pip, use the NVIDIA package index:
pip install --extra-index-url https://pypi.nvidia.com pynvjitlink-cu12
CUDA 11
To use MVC support, the cubinlinker and ptxcompiler compiler packages
must be installed from the appropriate channels. To install using conda, use:
conda install -c rapidsai -c conda-forge cubinlinker ptxcompiler
To install with pip, use the NVIDIA package index:
pip install --extra-index-url https://pypi.nvidia.com ptxcompiler-cu11 cubinlinker-cu11
Enabling MVC Support
MVC support is enabled by setting the environment variable:
export NUMBA_CUDA_ENABLE_MINOR_VERSION_COMPATIBILITY=1
or by setting a configuration variable prior to using any CUDA functionality in Numba:
from numba import config
config.CUDA_ENABLE_MINOR_VERSION_COMPATIBILITY = True