mention cuTensorNet backend
@@ -457,6 +457,8 @@ def einsum(*operands, **kwargs):
- Memory contiguity of the returned array is not always compatible with
:func:`numpy.einsum`.
- ``out``, ``order``, and ``casting`` options are not supported.
+ - If :envvar:`CUPY_ACCELERATORS` includes ``cutensornet``, the `einsum`
+ calculation will be performed by the cuTensorNet backend if possible.
- If :envvar:`CUPY_ACCELERATORS` includes ``cutensor``, `einsum` will be
accelerated by the cuTENSOR backend whenever possible.
