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[NFC] polish colossalai/auto_parallel/offload/amp_optimizer.py code s… #4255

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Merged
Fridge003 merged 1 commit into from
Jul 18, 2023
Merged

[NFC] polish colossalai/auto_parallel/offload/amp_optimizer.py code s… #4255

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11 changes: 6 additions & 5 deletions colossalai/auto_parallel/offload/amp_optimizer.py
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Original file line number Diff line number Diff line change
@@ -1,24 +1,25 @@
from typing import Dict, Tuple
from enum import Enum
from typing import Dict, Tuple

import torch
from torch.optim import Optimizer

from colossalai.amp.naive_amp.grad_scaler import DynamicGradScaler
from colossalai.logging import get_dist_logger
from colossalai.nn.optimizer import ColossalaiOptimizer
from colossalai.amp.naive_amp.grad_scaler import DynamicGradScaler
from colossalai.utils import get_current_device

from .base_offload_module import BaseOffloadModule
from .region_manager import RegionManager
from .region import Region
from .region_manager import RegionManager


class OptimState(Enum):
SCALED = 0
UNSCALED = 1

class AMPOptimizer(ColossalaiOptimizer):

class AMPOptimizer(ColossalaiOptimizer):
"""
A wrapper for Optimizer.
Code reference: https://github.com/hpcaitech/ColossalAI/blob/main/colossalai/nn/optimizer/zero_optimizer.py
Expand Down Expand Up @@ -174,4 +175,4 @@ def __init__optimizer(self):

# Leverage state_dict() and load_state_dict() to
# recast preexisting per-param state tensors
self.optim.load_state_dict(self.optim.state_dict())
self.optim.load_state_dict(self.optim.state_dict())