keras-team/keras · error · ValueError

`slice_update` is not supported by openvino backend for `sta

Error message

`slice_update` is not supported by openvino backend for `start_indices` of type {}

What it means

Error "`slice_update` is not supported by openvino backend for `start_indices` of type {}" thrown in keras-team/keras.

Source

Thrown at keras/src/backend/openvino/core.py:1431

    # Apply reshape to ensure output matches expected shape
    # Convert None (dynamic) dimensions to -1 for OpenVINO compatibility
    if all(dim is None or (isinstance(dim, int) and dim >= 0) for dim in shape):
        reshape_pattern = [(-1 if dim is None else dim) for dim in shape]
        target_shape = ov_opset.constant(reshape_pattern, Type.i32).output(0)
        result = ov_opset.reshape(result, target_shape, False).output(0)

    return OpenVINOKerasTensor(result)


def slice_update(inputs, start_indices, updates):
    inputs = get_ov_output(inputs)
    updates_tensor = get_ov_output(updates)

    if isinstance(start_indices, (list, np.ndarray)):
        start_indices = tuple(start_indices)
    if not isinstance(start_indices, tuple):
        raise ValueError(
            "`slice_update` is not supported by openvino backend"
            " for `start_indices` of type {}".format(type(start_indices))
        )

    zero_scalar = ov_opset.constant(0, Type.i32)
    one_scalar = ov_opset.constant(1, Type.i32)
    zero_tensor = ov_opset.constant([0], Type.i32)
    one_tensor = ov_opset.constant([1], Type.i32)

    processed_start_indices = []
    for idx in start_indices:
        val = get_ov_output(idx)
        if not val.get_element_type().is_integral():
            raise ValueError("`slice_update` requires integral start_indices")
        if val.get_element_type() != Type.i32:
            val = ov_opset.convert(val, Type.i32).output(0)
        if val.get_partial_shape().rank.get_length() == 0:
            val = ov_opset.unsqueeze(val, zero_scalar).output(0)

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/backend/openvino/core.py:1431 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/1fa0efc188b2c007. Report an issue: GitHub.