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Posted to commits@tvm.apache.org by GitBox <gi...@apache.org> on 2021/03/11 14:34:28 UTC

[GitHub] [tvm] FrozenGene edited a comment on issue #7563: Accuracy drop when use batch and opt_level=3

FrozenGene edited a comment on issue #7563:
URL: https://github.com/apache/tvm/issues/7563#issuecomment-796780183


   > > @guyzsarun There is no mxnet model attachment. So I can not reproduce your issue.
   > 
   > @FrozenGene You can use [this model](https://drive.google.com/drive/folders/1yGXAKebez7R_ZMjWWxaSBD5ixB68GUyR?usp=sharing) as already reported in [TVM discuss](https://discuss.tvm.apache.org/t/bug-performance-drop-with-batch-and-opt-level-3/9193/2).
   
   I could reproduce this issue use the model mentioned. Besides `CanonicalizeOps`, if we just disable `AlterOpLayout` we could pass it too. If we set the target be `cuda`, we could pass too. The difference I could think of is when we set target be `llvm` and turn on `AlterOpLayout`, the layout is `NCHWc`. Maybe we trigger some bug of `NCHWc` layout when batch size is not 1.


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