How to add trials/walltime after a optimize call ends

[oddg]

Description

I ran myfacade.optimize and it completed successfully. Now I want to re-optimize but with a larger budget on n_trials and walltime_limit while reusing the data collected on the first scenario. How can I do that?

What I tried.

The documentation explains how to use prior over the optimum but it is not clear how to find that prior from the previous successful optimization.

I tried to reuse the intensifier of the first facade without success.

[dengdifan]

Hi,

you could create a new facade with the enlarged n_trials and walltime_limit, then use the tell function to tell the optimizer the TrialValue and TrialInfo from your previous runs (which can be read from the runhistory generated by your first SMAC run). Please let me know if that helps

[oddg]

Thanks @dengdifan for the reply!

This is what I was looking for. I ended doing something like below

for (trial_key, trial_value) in complete_facade.runhistory.items():
    trial_info = TrialInfo(
        config=complete_facade.runhistory.get_config(trial_key.config_id),
        instance=trial_key.instance,
        seed=trial_key.seed,
        budget=trial_key.budget
    )
    new_facade.tell(trial_info, trial_value)