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Subject [GitHub] [incubator-tvm] mbrookhart opened a new pull request #5755: Edit onnx parser to infer values in post order
Date Tue, 09 Jun 2020 17:46:36 GMT

mbrookhart opened a new pull request #5755:

   This makes infer_value and infer_value_simulated run one op at a time to prevent recompiling/rerunning
the same graph over and over.
   If the old version ran in `t = A * N * M`, where N is the number of nodes in the call,
and M is the number of times infer_value is called, this runs in `t = B * N`, but `B >>
A`. This means some models slow down during import, but very long running models speed up.
   Import performance testing on my laptop with  models from the onnx model zoo and HuggingFace
   RN50 (
     master: 5.05 s
     this: 6.05 s
   BERT-Squad (
     master: 68.8 s
     this: 158.5 s
   HuggingFace BERT (`transformers.TFBertForSequenceClassification.from_pretrained('bert-base-cased')`)
     master: 567.1 s
     this: 122.5 s
   @jwfromm @masahi Do you think this is worth including?

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