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fix stable weight decay for madgrad

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Zohten
2021-07-18 18:00:21 +02:00
parent d670dbaab5
commit cd022ff593
1 changed files with 4 additions and 1 deletions
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ranger21/ranger21.py
+4 -1
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@@ -702,7 +702,10 @@ class Ranger21(TO.Optimizer):
raise ValueError("failed to set param size")
# stable weight decay
variance_normalized = math.sqrt(variance_ma_sum / param_size)
if self.use_madgrad:
variance_normalized = torch.pow(variance_ma_sum / param_size, 1/3)
else:
variance_normalized = math.sqrt(variance_ma_sum / param_size)
# variance_mean = variance_ma_sum / param_size
if math.isnan(variance_normalized):
raise RuntimeError("hit nan for variance_normalized")