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Fixing Ghost Clipping with Batch Memory Manager #707

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Fixing Ghost Clipping with Batch Memory Manager #707

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5 changes: 3 additions & 2 deletions opacus/optimizers/optimizer_fast_gradient_clipping.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@

from __future__ import annotations

import copy
import logging
from typing import Callable, Optional

Expand Down Expand Up @@ -112,9 +113,9 @@ def accumulate(self):
"""
for p in self.params:
if p.summed_grad is not None:
p.summed_grad += p.grad
p.summed_grad.add_(p.grad.data)
else:
p.summed_grad = p.grad
p.summed_grad = copy.deepcopy(p.grad.data)

def zero_grad(self, set_to_none: bool = False):
"""
Expand Down
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