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add set_lr & get_lr for stage2 optimizer. #48857

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Merged
merged 2 commits into from
Dec 9, 2022
Merged

add set_lr & get_lr for stage2 optimizer. #48857

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edc5765
update for stage2 optimizer.
wuhuachaocoding Dec 7, 2022
05ff662
update.
wuhuachaocoding Dec 8, 2022
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7 changes: 7 additions & 0 deletions python/paddle/distributed/fleet/meta_parallel/sharding/group_sharded_optimizer_stage2.py
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Original file line number Diff line number Diff line change
Expand Up @@ -580,6 +580,13 @@ def __impl__(x, y):

return __impl__

def set_lr(self, lr):
super().set_lr(lr)
self._optim.set_lr(lr)

def get_lr(self):
return self._optim.get_lr()

@paddle.autograd.no_grad()
def _broadcast_params_overlap_forward(self):
# Exchange all the shards with the other ranks,
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4 changes: 4 additions & 0 deletions python/paddle/fluid/tests/unittests/collective/fleet/dygraph_group_sharded_api_eager.py
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Expand Up @@ -100,6 +100,10 @@ def train_mlp(
dp_group=dp_group,
)

# just for test_coverage.
if shard_level == "os_g":
optimizer.set_lr(optimizer.get_lr())

train_reader = paddle.batch(
reader_decorator(), batch_size=batch_size, drop_last=True
)
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