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[CORE] Quantized lm-head Framework (#4442)

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Co-authored-by: Robert Shaw <rshaw@neuralmagic.com>
Co-authored-by: ZX <zx@lbx.dev>
This commit is contained in:
Qubitium-ModelCloud
2024-07-03 06:25:17 +08:00
committed by GitHub
parent 7c008c51a9
commit ee93f4f92a
48 changed files with 268 additions and 121 deletions
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8
vllm/model_executor/models/qwen2.py
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@@ -316,11 +316,11 @@ class Qwen2ForCausalLM(nn.Module, SupportsLoRA):
self.model = Qwen2Model(config, cache_config, quant_config)
if config.tie_word_embeddings:
self.lm_head_weight = self.model.embed_tokens.weight
self.lm_head = self.model.embed_tokens
else:
self.lm_head = ParallelLMHead(config.vocab_size,
config.hidden_size)
self.lm_head_weight = self.lm_head.weight
config.hidden_size,
quant_config=quant_config)
self.logits_processor = LogitsProcessor(config.vocab_size)
self.sampler = Sampler()
@@ -339,7 +339,7 @@ class Qwen2ForCausalLM(nn.Module, SupportsLoRA):
def compute_logits(self, hidden_states: torch.Tensor,
sampling_metadata: SamplingMetadata) -> torch.Tensor:
logits = self.logits_processor(self.lm_head_weight, hidden_states,
logits = self.logits_processor(self.lm_head, hidden_states,
sampling_metadata)
return logits