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[AutoTVM] Download fallback schedule file if it does not exist - #4671
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comaniac
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Jan 9, 2020
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LGTM
@merrymercy could you help review and merge?
kevinthesun
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Jan 10, 2020
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Thanks @zxy844288792@comaniac |
CoinCheung
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Jan 20, 2020
Hi, Does this requires downloading from blocked websites. Do we need to download through the firewall? |
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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 by @ them in the pull request thread.