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Sofie Van Landeghem 2026-04-13 14:17:23 +02:00 committed by GitHub
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nanochat/gpt.py
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@ -237,6 +237,8 @@ class GPT(nn.Module):
# Decaying x0 init: earlier layers get more input embedding blending
for i in range(n_layer):
self.x0_lambdas.data[i] = 0.20 - (0.15 * i / max(n_layer - 1, 1))
# Smear/backout scalars and smear gate must be explicitly initialized
torch.nn.init.zeros_(self.smear_lambda)
torch.nn.init.constant_(self.backout_lambda, 0.2)
torch.nn.init.uniform_(self.smear_gate.weight, 0.0, 0.02)