Update to reflect the config LR

[aastha3]

Why is the LR hardcoded? Should it not be the same as that provided in the config file?

[sshaoshuai]

For the one-cycle optimizer/scheduler strategy, the LR is set by the following lines:

https://github.com/open-mmlab/OpenPCDet/blob/master/tools/train_utils/optimization/__init__.py#L51-L53

So your mentioned part will not have effect for the LR of optimizer.

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