support resume model from pai (#544)
Co-authored-by: aky15 <ankeyu.aky@11.17.44.249>
| | |
| | | schedulers: Sequence[Optional[AbsScheduler]], |
| | | scaler: Optional[GradScaler], |
| | | ngpu: int = 0, |
| | | oss_bucket=None, |
| | | ): |
| | | states = torch.load( |
| | | checkpoint, |
| | | map_location=f"cuda:{torch.cuda.current_device()}" if ngpu > 0 else "cpu", |
| | | ) |
| | | if oss_bucket is None: |
| | | if os.path.exists(checkpoint): |
| | | states = torch.load( |
| | | checkpoint, |
| | | map_location=f"cuda:{torch.cuda.current_device()}" if ngpu > 0 else "cpu", |
| | | ) |
| | | |
| | | else: |
| | | return 0 |
| | | else: |
| | | if oss_bucket.object_exists(checkpoint): |
| | | buffer = BytesIO(oss_bucket.get_object(checkpoint).read()) |
| | | states = torch.load(buffer, map_location=f"cuda:{torch.cuda.current_device()}" if ngpu > 0 else "cpu",) |
| | | else: |
| | | return 0 |
| | | model.load_state_dict(states["model"]) |
| | | reporter.load_state_dict(states["reporter"]) |
| | | for optimizer, state in zip(optimizers, states["optimizers"]): |
| | |
| | | else: |
| | | scaler = None |
| | | |
| | | if trainer_options.resume and (output_dir / "checkpoint.pb").exists(): |
| | | if trainer_options.resume: |
| | | cls.resume( |
| | | checkpoint=output_dir / "checkpoint.pb", |
| | | checkpoint=os.path.join(trainer_options.output_dir, "checkpoint.pb") if trainer_options.use_pai else output_dir / "checkpoint.pb", |
| | | model=model, |
| | | optimizers=optimizers, |
| | | schedulers=schedulers, |
| | | reporter=reporter, |
| | | scaler=scaler, |
| | | ngpu=trainer_options.ngpu, |
| | | oss_bucket=trainer_options.oss_bucket if trainer_options.use_pai else None, |
| | | ) |
| | | |
| | | start_epoch = reporter.get_epoch() + 1 |