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[BugFix] Fix hold_out_net #1719

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merged 1 commit into from
Nov 28, 2023
Merged

[BugFix] Fix hold_out_net #1719

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12 changes: 9 additions & 3 deletions torchrl/objectives/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -363,13 +363,19 @@ class hold_out_net(_context_manager):

def __init__(self, network: nn.Module) -> None:
self.network = network
for p in network.parameters():
self.mode = p.requires_grad
break
else:
self.mode = True

def __enter__(self) -> None:
self.params = TensorDict.from_module(self.network)
self.params.detach().to_module(self.network, return_swap=False)
if self.mode:
self.network.requires_grad_(False)

def __exit__(self, exc_type, exc_val, exc_tb) -> None:
self.params.to_module(self.network, return_swap=False)
if self.mode:
self.network.requires_grad_()


class hold_out_params(_context_manager):
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