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[Feature] Device transform #1472

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merged 10 commits into from
Aug 30, 2023
Merged

[Feature] Device transform #1472

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vmoens Aug 26, 2023
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Merge remote-tracking branch 'origin/main' into device_transform
vmoens Aug 30, 2023
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@vmoens
vmoens committed Aug 30, 2023
commit 93c49bab10bbf81ddf1cd47acc41142bb7708ffb
16 changes: 8 additions & 8 deletions torchrl/envs/transforms/transforms.py
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Expand Up @@ -2761,18 +2761,18 @@ class DeviceCastTransform(Transform):

Args:
device (torch.device or equivalent): the destination device.
orig_device (torch.device or equivalent): the origin device. If not specified and
a parent environment exists, it it retrieved from it. In all other cases,
it remains unspecified.

Examples:
>>> td = TensorDict(
... {'obs': torch.ones(1, dtype=torch.double),
... 'not_transformed': torch.ones(1, dtype=torch.double),
... }, [])
>>> transform = DeviceTransform(torch.device("cpu:2"))
>>> _ = transform(td)
>>> print(td.get("obs").device)
torch.cpu:2
>>> print(td.get("not_transformed").device)
torch.cpu:2
... }, [], device="cpu:0")
>>> transform = DeviceCastTransform(device=torch.device("cpu:2"))
>>> td = transform(td)
>>> print(td.device)
cpu:2

"""

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