Hi @spolisetty,

I am sharing the verbose of trtexec:

```
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Conv_184 for ONNX node: Conv_184
[02/22/2021-12:45:06] [V] [TRT] builtin_op_importers.cpp:533: Using kernel: (1, 1, 1), strides: (1, 1, 1), prepadding: (0, 0, 0), postpadding: (0, 0, 0), dilations: (1, 1, 1), numOutputs: 512
[02/22/2021-12:45:06] [V] [TRT] builtin_op_importers.cpp:534: Convolution output dimensions: (1, 512, 4, 8, 14)
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1572 for ONNX tensor: 1572
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Conv_184 [Conv] outputs: [1572 -> (1, 512, 4, 8, 14)],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Unsqueeze_185 [Unsqueeze]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1559
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Unsqueeze_185 [Unsqueeze] inputs: [1559 -> ()],
[02/22/2021-12:45:06] [V] [TRT] onnx2trt_utils.cpp:1793: Original shape: (), unsqueezing to: (1,)
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Unsqueeze_185 for ONNX node: Unsqueeze_185
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1575 for ONNX tensor: 1575
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Unsqueeze_185 [Unsqueeze] outputs: [1575 -> (1)],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Concat_186 [Concat]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1575
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 2878
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 2879
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Concat_186 [Concat] inputs: [1575 -> (1)], [2878 -> (1)], [2879 -> (1)],
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Concat_186 for ONNX node: Concat_186
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1578 for ONNX tensor: 1578
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Concat_186 [Concat] outputs: [1578 -> (3)],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Reshape_187 [Reshape]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1569
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1578
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Reshape_187 [Reshape] inputs: [1569 -> (1, 512, 8, 16, 29)], [1578 -> (3)],
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Reshape_187 for ONNX node: Reshape_187
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1579 for ONNX tensor: 1579
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Reshape_187 [Reshape] outputs: [1579 -> (-1, -1, -1)],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Unsqueeze_188 [Unsqueeze]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1559
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Unsqueeze_188 [Unsqueeze] inputs: [1559 -> ()],
[02/22/2021-12:45:06] [V] [TRT] onnx2trt_utils.cpp:1793: Original shape: (), unsqueezing to: (1,)
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Unsqueeze_188 for ONNX node: Unsqueeze_188
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1582 for ONNX tensor: 1582
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Unsqueeze_188 [Unsqueeze] outputs: [1582 -> (1)],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Concat_189 [Concat]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1582
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 2880
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 2881
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Concat_189 [Concat] inputs: [1582 -> (1)], [2880 -> (1)], [2881 -> (1)],
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Concat_189 for ONNX node: Concat_189
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1585 for ONNX tensor: 1585
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Concat_189 [Concat] outputs: [1585 -> (3)],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Reshape_190 [Reshape]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1571
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1585
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Reshape_190 [Reshape] inputs: [1571 -> (1, 512, 4, 8, 14)], [1585 -> (3)],
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Reshape_190 for ONNX node: Reshape_190
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1586 for ONNX tensor: 1586
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Reshape_190 [Reshape] outputs: [1586 -> (-1, -1, -1)],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Unsqueeze_191 [Unsqueeze]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1559
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Unsqueeze_191 [Unsqueeze] inputs: [1559 -> ()],
[02/22/2021-12:45:06] [V] [TRT] onnx2trt_utils.cpp:1793: Original shape: (), unsqueezing to: (1,)
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Unsqueeze_191 for ONNX node: Unsqueeze_191
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1589 for ONNX tensor: 1589
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Unsqueeze_191 [Unsqueeze] outputs: [1589 -> (1)],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Concat_192 [Concat]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1589
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 2882
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 2883
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Concat_192 [Concat] inputs: [1589 -> (1)], [2882 -> (1)], [2883 -> (1)],
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Concat_192 for ONNX node: Concat_192
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1592 for ONNX tensor: 1592
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Concat_192 [Concat] outputs: [1592 -> (3)],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Reshape_193 [Reshape]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1572
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1592
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Reshape_193 [Reshape] inputs: [1572 -> (1, 512, 4, 8, 14)], [1592 -> (3)],
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Reshape_193 for ONNX node: Reshape_193
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1593 for ONNX tensor: 1593
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Reshape_193 [Reshape] outputs: [1593 -> (-1, -1, -1)],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Einsum_194 [Einsum]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1579
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1586
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Einsum_194 [Einsum] inputs: [1579 -> (-1, -1, -1)], [1586 -> (-1, -1, -1)],
[02/22/2021-12:45:06] [I] [TRT] ModelImporter.cpp:135: No importer registered for op: Einsum. Attempting to import as plugin.
[02/22/2021-12:45:06] [I] [TRT] builtin_op_importers.cpp:3659: Searching for plugin: Einsum, plugin_version: 1, plugin_namespace:
[02/22/2021-12:45:06] [I] [TRT] builtin_op_importers.cpp:3676: Successfully created plugin: Einsum
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Einsum_194 for ONNX node: Einsum_194
[02/22/2021-12:45:06] [E] [TRT] Einsum_194: PluginV2Layer must be V2DynamicExt when there are runtime input dimensions.
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1594 for ONNX tensor: 1594
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Einsum_194 [Einsum] outputs: [1594 -> ()],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Shape_195 [Shape]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1594
[02/22/2021-12:45:06] [E] [TRT] Einsum_194: PluginV2Layer must be V2DynamicExt when there are runtime input dimensions.
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Shape_195 [Shape] inputs: [1594 -> ()],
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:141: Registering layer: Shape_195 for ONNX node: Shape_195
[02/22/2021-12:45:06] [E] [TRT] Einsum_194: PluginV2Layer must be V2DynamicExt when there are runtime input dimensions.
[02/22/2021-12:45:06] [V] [TRT] ImporterContext.hpp:116: Registering tensor: 1595 for ONNX tensor: 1595
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Shape_195 [Shape] outputs: [1595 -> ()],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Constant_196 [Constant]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Constant_196 [Constant] inputs:
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:179: Constant_196 [Constant] outputs: [1596 -> ()],
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:103: Parsing node: Gather_197 [Gather]
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1595
[02/22/2021-12:45:06] [E] [TRT] Einsum_194: PluginV2Layer must be V2DynamicExt when there are runtime input dimensions.
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:119: Searching for input: 1596
[02/22/2021-12:45:06] [V] [TRT] ModelImporter.cpp:125: Gather_197 [Gather] inputs: [1595 -> ()], [1596 -> ()],
[02/22/2021-12:45:06] [E] [TRT] Einsum_194: PluginV2Layer must be V2DynamicExt when there are runtime input dimensions.
ERROR: onnx2trt_utils.cpp:188 In function convertAxis:
[8] Assertion failed: axis >= 0 && axis < nbDims
[02/22/2021-12:45:06] [E] Failed to parse onnx file
[02/22/2021-12:45:06] [E] Parsing model failed
[02/22/2021-12:45:06] [E] Engine creation failed
[02/22/2021-12:45:06] [E] Engine set up failed
&&&& FAILED TensorRT.trtexec # ./trtexec --onnx=/home/darshan/slow_fast.onnx --shapes=input1:1x3x8x256x455,input2:1x3x32x256x455 --plugins=/home/darshan/Einsum_op.so --verbose
```

I have implemented the plugin for Einsum Operator.

Below is the node Information:

If you can observe in the verbose:

Reshape_187 [Reshape] inputs: [1569 → (1, 512, 8, 16, 29)], [1578 → (3)], outputs: [1579 → (-1, -1, -1)]

Reshape_190 [Reshape] inputs: [1571 → (1, 512, 4, 8, 14)], [1585 → (3)], outputs: [1586 → (-1, -1, -1)]

Reshape_187 and Reshape_190 are going as an input to the einsum_194. But the Output shape info of both the reshape is (-1, -1, -1)(which is dynamic), so may be the reason I have to implement the Plugin for Dynamic case.

Is it right? Or is there any other way?

Thanks,

Darshan