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WIP: Disable _optimizer_to_device logic #20036

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WIP: Disable _optimizer_to_device logic #20036

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137c7b9
Disable _optimizer_to_device logic
corwinjoy Jul 2, 2024
d2589fc
update test
awaelchli Jul 3, 2024
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Disable _optimizer_to_device logic
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@corwinjoy
corwinjoy committed Jul 2, 2024
commit 137c7b9d7443c32e21db8e5e9f70c919141984f3
6 changes: 1 addition & 5 deletions src/lightning/fabric/utilities/optimizer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,11 +14,8 @@

from typing import Iterable

from lightning_utilities.core.apply_func import apply_to_collection
from torch import Tensor
from torch.optim import Optimizer

from lightning.fabric.utilities.apply_func import move_data_to_device
from lightning.fabric.utilities.types import _DEVICE


Expand All @@ -30,5 +27,4 @@ def _optimizers_to_device(optimizers: Iterable[Optimizer], device: _DEVICE) -> N

def _optimizer_to_device(optimizer: Optimizer, device: _DEVICE) -> None:
"""Moves the state of a single optimizer to the device."""
for p, v in optimizer.state.items():
optimizer.state[p] = apply_to_collection(v, Tensor, move_data_to_device, device, allow_frozen=True)
pass
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