Source code for orion.algo.dehb.brackets

"""Specialization of SHBracketManager to support duplicated trials"""
from __future__ import annotations

import logging
from collections import defaultdict

import numpy

    from dehb.utils import SHBracketManager as SHBracketManagerImpl

except ImportError as exc:

    class SHBracketManagerImpl:

    IMPORT_ERROR = exc

logger = logging.getLogger(__name__)

[docs]class SHBracketManager(SHBracketManagerImpl): """Override the default implementation to ignore duplicated trials in budget accounting""" def __init__( self, n_configs: numpy.ndarray, budgets: numpy.ndarray, bracket_id: int, duplicates: defaultdict[str, int], ): super().__init__(n_configs, budgets, bracket_id) self.duplicates = duplicates
[docs] def complete_job(self, budget: int) -> None: """Notifies the bracket that a job for a budget has been completed This function must be called when a config for a budget has finished evaluation to inform the Bracket Manager that no job needs to be waited for and the next rung can begin for the synchronous Successive Halving case. """ assert budget in self.budgets _max_configs: int = self.n_configs[list(self.budgets).index(budget)] offset = 0 if self.duplicates is not None: offset = self.duplicates.get(str(budget), 0) assert self._sh_bracket[budget] - offset < _max_configs self._sh_bracket[budget] += 1