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Do not include non_persistent buffer in state_dict #1826

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Merged
emailweixu merged 1 commit into from
Jan 23, 2026
Merged

Do not include non_persistent buffer in state_dict #1826

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9 changes: 7 additions & 2 deletions alf/algorithms/algorithm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1050,7 +1050,8 @@ def _save_to_state_dict(self, destination, prefix, visited=None):
visited.add(param)
destination[prefix + name] = param.detach()
for name, buf in self._buffers.items():
if buf is not None and buf not in visited:
if (buf is not None and buf not in visited
and name not in self._non_persistent_buffers_set):
visited.add(buf)
destination[prefix + name] = buf.detach()

Expand Down Expand Up @@ -1105,7 +1106,11 @@ def _load_from_state_dict(self,

local_name_params = itertools.chain(self._parameters.items(),
self._buffers.items())
local_state = {k: v for k, v in local_name_params if v is not None}
local_state = {
k: v
for k, v in local_name_params
if v is not None and k not in self._non_persistent_buffers_set
}

for name, param in local_state.items():
if param is not None and param not in visited:
Expand Down