def supported_versions(self):
        """A tuple of all supported CUDA toolkit versions. Versions are given in
        the form ``(major_version, minor_version)``."""
        if sys.platform not in ('linux', 'win32') or config.MACHINE_BITS != 64:
            # Only 64-bit Linux and Windows are supported
            return ()
        return ((11, 0), (11, 1), (11, 2), (11, 3), (11, 4), (11, 5), (11, 6),
                (11, 7))
A tuple of all supported CUDA toolkit versions. Versions are given in
        the form ``(major_version, minor_version)``.
numba/cuda/cudadrv/runtime.py