[tune] How to run simple SHA (1 bracket of Hyperband)

[chanshing]

How can I run a simple SHA -- in other words, one bracket of Hyperband? For example, I'd like to be able to run only the bracket s=3 in your example blog https://homes.cs.washington.edu/~jamieson/hyperband.html

Is this possible?

Edit: I think ASHA pretty much does this but I'm not 100% sure I want the eager promotion for asynchronicity (I have 8 GPUs, not hundreds).

[richardliaw]

hey @chanshing sorry for the late reply.

You can try something like this - the promotion here is 'semi-eager'. You can also adjust the implementation to your liking. #4401 (comment)

The key place to adjust promotion is in _Bracket. Note that we will prioritize upstreaming this in a couple weeks.

[chanshing]

Thanks for the pointers. I will have a look :)

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