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# Author: Simon Blanke |
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# Email: [email protected] |
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# License: MIT License |
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import time |
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import numpy as np |
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import multiprocessing |
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from .base_positioner import BasePositioner |
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from .candidate import Candidate |
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from .verbosity import set_verbosity |
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class BaseOptimizer: |
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def __init__(self, _main_args_, _opt_args_): |
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self._main_args_ = _main_args_ |
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self._opt_args_ = _opt_args_ |
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self._info_, _pbar_ = set_verbosity(_main_args_.verbosity) |
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self._pbar_ = _pbar_() |
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def search(self, nth_process=0, rayInit=False): |
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self.start_time = time.time() |
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self.results = {} |
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self.eval_times = {} |
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self.iter_times = {} |
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self.best_scores = {} |
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self.pos_list = {} |
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self.score_list = {} |
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if rayInit: |
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self._run_job(nth_process) |
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elif self._main_args_.n_jobs == 1: |
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self._run_job(nth_process) |
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else: |
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self._run_multiple_jobs() |
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return ( |
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self.results, |
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self.pos_list, |
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self.score_list, |
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self.eval_times, |
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self.iter_times, |
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self.best_scores, |
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) |
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def _search_multiprocessing(self): |
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"""Wrapper for the parallel search. Passes integer that corresponds to process number""" |
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pool = multiprocessing.Pool(self._main_args_.n_jobs) |
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_cand_list, _p_list = zip( |
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*pool.map(self._search, self._main_args_._n_process_range) |
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) |
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return _cand_list, _p_list |
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def _run_job(self, nth_process): |
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_cand_, _p_ = self._search(nth_process) |
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self._get_attributes(_cand_, _p_) |
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def _get_attributes(self, _cand_, _p_): |
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self.results[_cand_.func_] = _cand_._process_results(self._opt_args_) |
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self.eval_times[_cand_.func_] = _cand_.eval_time |
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self.iter_times[_cand_.func_] = _cand_.iter_times |
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self.best_scores[_cand_.func_] = _cand_.score_best |
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if isinstance(_p_, list): |
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self.pos_list[_cand_.func_] = [np.array(p.pos_new_list) for p in _p_] |
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self.score_list[_cand_.func_] = [np.array(p.score_new_list) for p in _p_] |
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else: |
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self.pos_list[_cand_.func_] = [np.array(_p_.pos_new_list)] |
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self.score_list[_cand_.func_] = [np.array(_p_.score_new_list)] |
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def _run_multiple_jobs(self): |
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_cand_list, _p_list = self._search_multiprocessing() |
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for _ in range(int(self._main_args_.n_jobs / 2) + 2): |
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print("\n") |
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for _cand_, _p_ in zip(_cand_list, _p_list): |
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self._get_attributes(_cand_, _p_) |
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def _search(self, nth_process): |
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_cand_, _p_ = self._initialize_search( |
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self._main_args_, nth_process, self._info_ |
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) |
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for i in range(self._main_args_.n_iter - 1): |
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c_time = time.time() |
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_cand_.i = i |
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_cand_ = self._iterate(i, _cand_, _p_) |
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self._pbar_.update_p_bar(1, _cand_) |
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run_time = time.time() - self.start_time |
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if self._main_args_.max_time and run_time > self._main_args_.max_time: |
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break |
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_cand_.iter_times.append(time.time() - c_time) |
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self._pbar_.close_p_bar() |
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return _cand_, _p_ |
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def _initialize_search(self, _main_args_, nth_process, _info_): |
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_main_args_._set_random_seed(nth_process) |
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_cand_ = Candidate(nth_process, _main_args_, _info_) |
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self._pbar_.init_p_bar(_cand_, self._main_args_) |
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_p_ = self._init_opt_positioner(_cand_) |
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self._pbar_.update_p_bar(1, _cand_) |
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return _cand_, _p_ |
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def _init_base_positioner(self, _cand_, positioner=None): |
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if positioner: |
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_p_ = positioner(**self._opt_args_.kwargs_opt) |
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else: |
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_p_ = BasePositioner(**self._opt_args_.kwargs_opt) |
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_p_.pos_current = _cand_.pos_best |
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_p_.score_current = _cand_.score_best |
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return _p_ |
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def _update_pos(self, _cand_, _p_): |
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_cand_.pos_best = _p_.pos_new |
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_cand_.score_best = _p_.score_new |
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_p_.pos_current = _p_.pos_new |
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_p_.score_current = _p_.score_new |
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self._pbar_.best_since_iter = _cand_.i |
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return _cand_, _p_ |
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SimonBlanke /
Hyperactive
