默认情况下,以下后端可用: ‘loky’:单主机、基于进程的并行性(默认使用), ‘threading’:单主机、基于线程的并行性、 ‘multiprocessing’:传统单主机、基于进程的并行性。 建议‘loky’运行操作Python对象的函数。 ‘threading’ 是一种低开销替代方案,对于释放全局解释器锁的函数来说最有效:例如对显式释放 GIL 的...
# 需要导入模块: import joblib [as 别名]# 或者: from joblib importparallel_backend[as 别名]deftest_optimize_parallel_storage_warning(recwarn):# type: (WarningsRecorder) -> Nonestudy = optuna.create_study()# Default joblib backend is threading and no warnings will be captured.study.optimize(lam...
KeyError in line 287 of resource_tracker.py with loky backend when setting n_jobs=-1 wtih large dataset? #1243 Open Artimi commented Apr 26, 2023 • edited I'd add that this error is very cryptic. Basically we should not try to extend with something that might not be an iterable...
with Parallel(n_jobs=2, prefer="processes", max_nbytes='1M') as p: > assert isinstance(p._backend, LokyBackend) E assert False E + where False = isinstance(<joblib._parallel_backends.ThreadingBackend object at 0x7d4e9f90ea80>, LokyBackend) E + where <joblib._parallel_backends.Threading...