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Fix the deprecated torch.cuda.amp module #21

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Merged
lauriebax merged 3 commits into from
Nov 4, 2025
Merged

Fix the deprecated torch.cuda.amp module #21

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0427373
Fix the deprecated torch.cuda.amp module
MGAMZ Nov 1, 2025
47e5298
Fix test according to the latest GradScaler definition.
MGAMZ Nov 1, 2025
5e31726
Fix lint
MGAMZ Nov 4, 2025
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4 changes: 3 additions & 1 deletion mmengine/optim/optimizer/amp_optimizer_wrapper.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
# Copyright (c) OpenMMLab. All rights reserved.
from contextlib import contextmanager
from typing import Union
from functools import partial

import torch
import torch.nn as nn
Expand All @@ -17,7 +18,8 @@
elif is_mlu_available():
from torch.mlu.amp import GradScaler
else:
from torch.cuda.amp import GradScaler
from torch.amp import GradScaler
GradScaler = partial(GradScaler, device='cuda')


@OPTIM_WRAPPERS.register_module()
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2 changes: 1 addition & 1 deletion tests/test_optim/test_optimizer/test_optimizer_wrapper.py
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Expand Up @@ -8,7 +8,7 @@
import torch.distributed as torch_dist
import torch.nn as nn
from parameterized import parameterized
from torch.cuda.amp import GradScaler
from torch.amp import GradScaler
from torch.nn.parallel.distributed import DistributedDataParallel
from torch.optim import SGD, Adam, Optimizer

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