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Add option to chain multiple learning rate schedulers. #59

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Add option to chain multiple learning rate schedulers. #59

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e3d4515
Add option to chain lr schedules.
veichta Jan 24, 2024
1c8d315
Fix formatting.
veichta Jan 24, 2024
5863345
Fix docstring.
veichta Jan 24, 2024
84b9a12
Cleaner way to get options.
veichta Jan 24, 2024
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13 changes: 13 additions & 0 deletions gluefactory/train.py
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Original file line number Diff line number Diff line change
Expand Up @@ -145,6 +145,19 @@ def filter_fn(x):
def get_lr_scheduler(optimizer, conf):
"""Get lr scheduler specified by conf.train.lr_schedule."""
if conf.type not in ["factor", "exp", None]:
if hasattr(conf.options, "schedulers"):
# Add option to chain multiple schedulers together
# This is useful for e.g. warmup, then cosine decay
schedulers = []
for scheduler_conf in conf.options.schedulers:
scheduler = get_lr_scheduler(optimizer, scheduler_conf)
schedulers.append(scheduler)

options = {k: v for k, v in conf.options.items() if k != "schedulers"}
return getattr(torch.optim.lr_scheduler, conf.type)(
optimizer, schedulers, **options
)

return getattr(torch.optim.lr_scheduler, conf.type)(optimizer, **conf.options)

# backward compatibility
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