[tools/mec] Show values of constant tensor

[batcheu]

What

The constant tensors (a.k.a. pseudo_const node in model explorer) have fixed value, and it can be shown in model explorer.

[batcheu]

• Model Explorer has the option 'Maximum element count for constant tensor values' which is limit the number of data to be shown in value attribute. (default = 16)
• Handling the option is varying depends on the adapter (e.g. TFliteFlatbuffer, ONNX...)

  • TFLite

    • Keep the original rank, and resize with size limit

      // Original tensor : shape[32,3,3,3]
      [[[ 
          [101, 27, 32], 
          [252, 22, 19], 
          [278, 1, 2] 
         ], 
         [ 
          [11, 227, 142], 
          [21, 52, 9], 
          [7, 121, 32] 
         ], 
         [ ... 
       ]]]
      
      // Shown in model explorer (w/ size limit : 16)
      [[[
          [101, 27, 32],
          [252, 22, 19], 
          [278, 1, 2]
         ], 
         [
          [11, 227, 142], 
          [21, 52, 9],
          [7, 121]
      ]]]
      

  • ONNX

    • Flatten and resize with the size limit

      // Original tensor : shape[32,3,3,3]
      [[[ 
          [101, 27, 32], 
          [252, 22, 19], 
          [278, 1, 2] 
         ], 
         [ 
          [11, 227, 142], 
          [21, 52, 9], 
          [7, 121, 32] 
         ], 
         [ ... 
      ]]]
      
      // Shown in model explorer (w/ size limit : 16)
      [ 101, 27, 32, 252, 22, 19, 278, 1, 2, 11, 227, 142, 21, 52, 9, 7, 121 ]