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Merge 7bd999ba02 into bc1fca39f3

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Abdulaziz Gabitov 2025-11-15 22:38:03 +03:00 committed by GitHub
commit 920fa8663d
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1 changed files with 2 additions and 2 deletions
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nanochat/engine.py
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@ -218,6 +218,8 @@ class Engine:
ids = torch.tensor([tokens], dtype=torch.long, device=device) ids = torch.tensor([tokens], dtype=torch.long, device=device)
logits = self.model.forward(ids, kv_cache=kv_cache_prefill) logits = self.model.forward(ids, kv_cache=kv_cache_prefill)
logits = logits[:, -1, :] logits = logits[:, -1, :]
# expand the logits to be of size (num_samples, vocab_size)
logits = logits.expand(num_samples, -1)
next_ids = sample_next_token(logits, rng, temperature, top_k) # (B, 1) next_ids = sample_next_token(logits, rng, temperature, top_k) # (B, 1)
sampled_tokens = next_ids[:, 0].tolist() sampled_tokens = next_ids[:, 0].tolist()
@ -248,8 +250,6 @@ class Engine:
# Get sampled tokens - either from prefill or from forward pass # Get sampled tokens - either from prefill or from forward pass
if first_iteration: if first_iteration:
# Use the tokens we already sampled from prefill # Use the tokens we already sampled from prefill
sampled_tokens = [sampled_tokens[0]] * num_samples # Broadcast first token to all rows
# TODO: we should sample a token for each row instead of broadcasting
first_iteration = False first_iteration = False
else: else:
# Forward the model and get the next token for each row # Forward the model and get the next token for each row