The attributes of Slice

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Question

When opset version<=9 the node of Slice have attribute which stores starts, end and axis. However, opset version >9 there isn’t attribute, how can I get the value of starts, ends and axis?

Further information

• I intend to convert onnx format of ViT model to Crypten. There is a error about Slice whose cause is that Crypten requires ‘starts’, ends and axis of Slice, but opset version>9 onnx doesn’t have attribute, I can’t find the starts etc.

• Is this issue related to a specific model?
  Model name (e.g. mnist): ViT model and Crypten Model opset (e.g. 7): opset version>=10

Notes

Any additional information, code snippets.

[gramalingam]

Just to clarify: “210” here is the name of a tensor. You can check whether there is an initializer with that name, which will provide the value. If not, there must be some node with an output named “210”. If it is a “Constant” node, then the value can be obtained from that node’s attributes. Otherwise, it is probably computed at runtime, and so a value cannot be determined statically.

[jcwchen]

If you didn’t find those input names of Slice node in your graph.initializer/graph.input, they are probably produced while forwarding the graph… That is to say, they are not static and their values can only obtained during runtime (giving inputs and going through the graph).