coffezhou opened a new issue, #18136:
URL: https://github.com/apache/tvm/issues/18136

   
   ### Expected behavior
   
   TVM should run the model correctly.
   
   ### Actual behavior
   
   For the following model,
   
   <img width="896" height="682" alt="Image" 
src="https://github.com/user-attachments/assets/f62695b0-71cd-4045-89b5-6658de6ee3f8";
 />
   
   it can be executed by onnxruntime and tensorrt, the results are as follows:
   ```c
    [array([[[[ 0.956883  ,  0.34308553,  0.5195541 ,  1.9632151 ],
            [ 1.883044  , -0.23061049, -0.7294371 ,  2.5681047 ],
            [ 0.28407115,  1.682113  ,  2.5914793 ,  0.4852687 ],
            [ 0.24526536,  0.30622482,  3.0827932 ,  1.4561847 ]],
   
           [[ 2.1793444 , -2.5670562 , -0.80677223,  2.8984652 ],
            [ 0.08523583, -0.3017456 , -2.035876  ,  2.2447228 ],
            [-0.35428178,  2.6846695 ,  0.35822523,  2.3507211 ],
            [ 1.695939  ,  0.96472025,  0.18676078,  0.34729946]],
   
           [[ 2.6731548 ,  0.75374746, -0.6920886 ,  1.0468161 ],
            [ 3.229167  , -0.11532289, -2.1251893 ,  0.39142615],
            [-2.1620007 ,  2.5675638 ,  1.9419372 ,  4.1579857 ],
            [ 0.9184834 ,  1.6698728 ,  2.0392544 ,  0.292496  ]]]],
         dtype=float32)]
   ```
   However, the onnx frontend of TVM cannot import it:
   ```c
   File 
"/home/carla/Documents/tvm/python/tvm/relax/frontend/onnx/onnx_frontend.py", 
line 3925, in from_onnx
       return g.from_onnx(graph, opset)
              ^^^^^^^^^^^^^^^^^^^^^^^^^
     File 
"/home/carla/Documents/tvm/python/tvm/relax/frontend/onnx/onnx_frontend.py", 
line 3556, in from_onnx
       self._construct_nodes(graph)
     File 
"/home/carla/Documents/tvm/python/tvm/relax/frontend/onnx/onnx_frontend.py", 
line 3736, in _construct_nodes
       raise err
     File 
"/home/carla/Documents/tvm/python/tvm/relax/frontend/onnx/onnx_frontend.py", 
line 3733, in _construct_nodes
       op = self.bb.normalize(op)
            ^^^^^^^^^^^^^^^^^^^^^
     File "/home/carla/Documents/tvm/python/tvm/relax/block_builder.py", line 
667, in normalize
       return _ffi_api.BlockBuilderNormalize(self, expr)  # type: ignore
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     File "tvm/ffi/cython/./function.pxi", line 228, in 
tvm.ffi.core.Function.__call__
   tvm.error.InternalError: Op(relax.nn.layer_norm) requires the input gamma to 
have as many dimensions as the length of input axes. However, the given one has 
ndim 3, which is other than the length of axes 1
   ```
   From the onnx specification of 
[LayerNormalization](https://onnx.ai/onnx/operators/onnx__LayerNormalization.html),
 the attribute 'axis' is the first normalization dimension. In this issue, 
axis=1, which indicates that the LayerNormalization operator will normalize the 
last three dimension of the date. According to this understanding, the shape 
[3,4,4] of Scale should be correct.
   
   ### Environment
   
   OS: Ubuntu 20.04
   TVM: 0.22.dev0 (c6969d723)
   onnxruntime: 1.21.0
   
   ### Steps to reproduce
   
   This bug can be reproduced by the following code with the model in the 
attachment. As shown in the code, the model can be executed by onnxruntime. 
However, TVM cannot import this model.
   ```python
   import sys
   
   import numpy as np
   import onnx
   import onnxruntime
   
   import tvm
   from tvm import relax
   from tvm.relax.frontend.onnx import from_onnx
   
   import pickle
   
               
   def main():
       onnx_model = onnx.load("111.onnx")
       
       with open("inputs.pkl", "rb") as fp:
           inputs = pickle.load(fp)
   
       try:
           ort_session = onnxruntime.InferenceSession(
               onnx_model.SerializeToString(), 
providers=["CPUExecutionProvider"]
           )
           ort_output = ort_session.run([], inputs)
       except Exception as e:
           print(e)
           sys.exit(1)
           
       print("ONNXRuntime:\n", ort_output)   
   
       # Convert the onnx model into relax through the onnx importer.
       tvm_model = from_onnx(onnx_model, keep_params_in_input=True)
       
   
       
   if __name__ == "__main__":
       
       main()
   
   ```
   
   ### Triage
   
   Please refer to the list of label tags 
[here](https://github.com/apache/tvm/wiki/Issue-Triage-Labels) to find the 
relevant tags and add them below in a bullet format (example below).
   
   * needs-triage
   


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