import os, sys import argparse import shutil import subprocess from omegaconf import OmegaConf from pytorch_lightning import seed_everything from pytorch_lightning.trainer import Trainer from pytorch_lightning.strategies import DDPStrategy from pytorch_lightning.callbacks import Callback from pytorch_lightning.utilities import rank_zero_only, rank_zero_warn from src.utils.train_util import instantiate_from_config @rank_zero_only def rank_zero_print(*args): print(*args) def get_parser(**parser_kwargs): def str2bool(v): if isinstance(v, bool): return v if v.lower() in ("yes", "true", "t", "y", "1"): return True elif v.lower() in ("no", "false", "f", "n", "0"): return False else: raise argparse.ArgumentTypeError("Boolean value expected.") parser = argparse.ArgumentParser(**parser_kwargs) parser.add_argument( "-r", "--resume", type=str, default=None, help="resume from checkpoint", ) parser.add_argument( "--resume_weights_only", action="store_true", help="only resume model weights", ) parser.add_argument( "-b", "--base", type=str, default="base_config.yaml", help="path to base configs", ) parser.add_argument( "-n", "--name", type=str, default="", help="experiment name", ) parser.add_argument( "--num_nodes", type=int, default=1, help="number of nodes to use", ) parser.add_argument( "--gpus", type=str, default="0,", help="gpu ids to use", ) parser.add_argument( "-s", "--seed", type=int, default=42, help="seed for seed_everything", ) parser.add_argument( "-l", "--logdir", type=str, default="logs", help="directory for logging data", ) return parser class SetupCallback(Callback): def __init__(self, resume, logdir, ckptdir, cfgdir, config): super().__init__() self.resume = resume self.logdir = logdir self.ckptdir = ckptdir self.cfgdir = cfgdir self.config = config def on_fit_start(self, trainer, pl_module): if trainer.global_rank == 0: # Create logdirs and save configs os.makedirs(self.logdir, exist_ok=True) os.makedirs(self.ckptdir, exist_ok=True) os.makedirs(self.cfgdir, exist_ok=True) rank_zero_print("Project config") rank_zero_print(OmegaConf.to_yaml(self.config)) OmegaConf.save(self.config, os.path.join(self.cfgdir, "project.yaml")) class CodeSnapshot(Callback): """ Modified from https://github.com/threestudio-project/threestudio/blob/main/threestudio/utils/callbacks.py#L60 """ def __init__(self, savedir): self.savedir = savedir def get_file_list(self): return [ b.decode() for b in set( subprocess.check_output( 'git ls-files -- ":!:configs/*"', shell=True ).splitlines() ) | set( # hard code, TODO: use config to exclude folders or files subprocess.check_output( "git ls-files --others --exclude-standard", shell=True ).splitlines() ) ] @rank_zero_only def save_code_snapshot(self): os.makedirs(self.savedir, exist_ok=True) for f in self.get_file_list(): if not os.path.exists(f) or os.path.isdir(f): continue os.makedirs(os.path.join(self.savedir, os.path.dirname(f)), exist_ok=True) shutil.copyfile(f, os.path.join(self.savedir, f)) def on_fit_start(self, trainer, pl_module): try: self.save_code_snapshot() except: rank_zero_warn( "Code snapshot is not saved. Please make sure you have git installed and are in a git repository." ) if __name__ == "__main__": # add cwd for convenience and to make classes in this file available when # running as `python main.py` sys.path.append(os.getcwd()) parser = get_parser() opt, unknown = parser.parse_known_args() cfg_fname = os.path.split(opt.base)[-1] cfg_name = os.path.splitext(cfg_fname)[0] exp_name = "-" + opt.name if opt.name != "" else "" logdir = os.path.join(opt.logdir, cfg_name+exp_name) ckptdir = os.path.join(logdir, "checkpoints") cfgdir = os.path.join(logdir, "configs") codedir = os.path.join(logdir, "code") seed_everything(opt.seed) # init configs config = OmegaConf.load(opt.base) lightning_config = config.lightning trainer_config = lightning_config.trainer trainer_config["accelerator"] = "gpu" rank_zero_print(f"Running on GPUs {opt.gpus}") ngpu = len(opt.gpus.strip(",").split(',')) trainer_config['devices'] = ngpu trainer_opt = argparse.Namespace(**trainer_config) lightning_config.trainer = trainer_config # model model = instantiate_from_config(config.model) if opt.resume and opt.resume_weights_only: model = model.__class__.load_from_checkpoint(opt.resume, **config.model.params) model.logdir = logdir # trainer and callbacks trainer_kwargs = dict() # logger default_logger_cfg = { "target": "pytorch_lightning.loggers.TensorBoardLogger", "params": { "name": "tensorboard", "save_dir": logdir, "version": "0", } } logger_cfg = OmegaConf.merge(default_logger_cfg) trainer_kwargs["logger"] = instantiate_from_config(logger_cfg) # model checkpoint default_modelckpt_cfg = { "target": "pytorch_lightning.callbacks.ModelCheckpoint", "params": { "dirpath": ckptdir, "filename": "{step:08}", "verbose": True, "save_last": True, "every_n_train_steps": 5000, "save_top_k": -1, # save all checkpoints } } if "modelcheckpoint" in lightning_config: modelckpt_cfg = lightning_config.modelcheckpoint else: modelckpt_cfg = OmegaConf.create() modelckpt_cfg = OmegaConf.merge(default_modelckpt_cfg, modelckpt_cfg) # callbacks default_callbacks_cfg = { "setup_callback": { "target": "train.SetupCallback", "params": { "resume": opt.resume, "logdir": logdir, "ckptdir": ckptdir, "cfgdir": cfgdir, "config": config, } }, "learning_rate_logger": { "target": "pytorch_lightning.callbacks.LearningRateMonitor", "params": { "logging_interval": "step", } }, "code_snapshot": { "target": "train.CodeSnapshot", "params": { "savedir": codedir, } }, } default_callbacks_cfg["checkpoint_callback"] = modelckpt_cfg if "callbacks" in lightning_config: callbacks_cfg = lightning_config.callbacks else: callbacks_cfg = OmegaConf.create() callbacks_cfg = OmegaConf.merge(default_callbacks_cfg, callbacks_cfg) trainer_kwargs["callbacks"] = [ instantiate_from_config(callbacks_cfg[k]) for k in callbacks_cfg] trainer_kwargs['precision'] = '32-true' trainer_kwargs["strategy"] = DDPStrategy(find_unused_parameters=True) # trainer trainer = Trainer(**trainer_config, **trainer_kwargs, num_nodes=opt.num_nodes) trainer.logdir = logdir # data data = instantiate_from_config(config.data) data.prepare_data() data.setup("fit") # configure learning rate base_lr = config.model.base_learning_rate if 'accumulate_grad_batches' in lightning_config.trainer: accumulate_grad_batches = lightning_config.trainer.accumulate_grad_batches else: accumulate_grad_batches = 1 rank_zero_print(f"accumulate_grad_batches = {accumulate_grad_batches}") lightning_config.trainer.accumulate_grad_batches = accumulate_grad_batches model.learning_rate = base_lr rank_zero_print("++++ NOT USING LR SCALING ++++") rank_zero_print(f"Setting learning rate to {model.learning_rate:.2e}") # run training loop if opt.resume and not opt.resume_weights_only: trainer.fit(model, data, ckpt_path=opt.resume) else: trainer.fit(model, data)