zxy844288792 opened a new pull request #4671: [AutoTVM] Download fallback schedule file if it does not exist URL: https://github.com/apache/incubator-tvm/pull/4671 Autotvm will download the default schedule file from tophub if user does not specify a schedule file. Howver, if user specifies a shedule file but a certain workload is not found in the file. It will fallback to default config, which will search the default schedule file for a closest config. However, in this case, as no schedule is downloaded from tophub, it fails to find a closest config and the performance is really bad. An example of performance before and after is shown below: The model is mxnet resnet50_v1 and device is NVIDIA K80 GPU Before: Total_time - 550853.527(us) After: Total_time - 28898.537(us) Thanks for contributing to TVM! Please refer to guideline https://docs.tvm.ai/contribute/ for useful information and tips. After the pull request is submitted, please request code reviews from [Reviewers](https://github.com/apache/incubator-tvm/blob/master/CONTRIBUTORS.md#reviewers) by @ them in the pull request thread.
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