keras-team/keras · error · ValueError

The `flip` operation does not support tensors with dynamic r

Error message

The `flip` operation does not support tensors with dynamic rank for the OpenVINO backend.

What it means

Error "The `flip` operation does not support tensors with dynamic rank for the OpenVINO backend." thrown in keras-team/keras.

Source

Thrown at keras/src/backend/openvino/numpy.py:1970

def expm1(x):
    x = get_ov_output(x)
    x_type = x.get_element_type()
    if x_type.is_integral():
        ov_type = OPENVINO_DTYPES[config.floatx()]
        x = ov_opset.convert(x, ov_type)
    exp_x = ov_opset.exp(x).output(0)
    const_one = ov_opset.constant(1, exp_x.get_element_type())
    result = ov_opset.subtract(exp_x, const_one).output(0)
    return OpenVINOKerasTensor(result)


def flip(x, axis=None):
    x_node = get_ov_output(x)

    # Using OpenVINO tensor shape
    ndim = len(x_node.get_partial_shape())
    if ndim is None:
        raise ValueError(
            "The `flip` operation does not support tensors with dynamic rank "
            "for the OpenVINO backend."
        )

    if axis is None:
        axis = list(range(ndim))
    elif isinstance(axis, int):
        axis = [axis]

    axis = [a + ndim if a < 0 else a for a in axis]

    begin = [0] * ndim
    end = [0] * ndim
    strides = [1] * ndim
    for a in axis:
        strides[a] = -1

    all_ones_mask = [1] * ndim

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/backend/openvino/numpy.py:1970 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of keras-team/keras@7a34a03db6 (2026-08-25). Data as JSON: /api/errors/6b6553d9e4fea06d. Report an issue: GitHub.