Refine model of qwen.

qwen/modeling_qwen.py

@@ -48,21 +48,7 @@ from qwen_generation_utils import (
 
 logger = logging.get_logger(__name__)
 
-QWen_PRETRAINED_MODEL_ARCHIVE_LIST = ["qwen-7b"]
-
-_ERROR_BAD_CHAT_FORMAT = """\
-We detect you are probably using the pretrained model (rather than chat model) for chatting, since the chat_format in generation_config is not "chatml".
-If you are directly using the model downloaded from Huggingface, please make sure you are using our "Qwen/Qwen-7B-Chat" Huggingface model (rather than "Qwen/Qwen-7B") when you call model.chat().
-我们检测到您可能在使用预训练模型（而非chat模型）进行多轮chat，因为您当前在generation_config指定的chat_format，并未设置为我们在对话中所支持的"chatml"格式。
-如果您在直接使用我们从Huggingface提供的模型，请确保您在调用model.chat()时，使用的是"Qwen/Qwen-7B-Chat"模型（而非"Qwen/Qwen-7B"预训练模型）。
-"""
-
 _SENTINEL = object()
-_ERROR_STREAM_IN_CHAT = """\
-Pass argument `stream` to model.chat() is buggy, deprecated, and marked for removal. Please use model.chat_stream(...) instead of model.chat(..., stream=True).
-向model.chat()传入参数stream的用法可能存在Bug，该用法已被废弃，将在未来被移除。请使用model.chat_stream(...)代替model.chat(..., stream=True)。
-"""
-
 
 class QWenAttention(nn.Module):
     def __init__(self, config):
@@ -209,7 +195,6 @@ class QWenAttention(nn.Module):
         attn_output = F.scaled_dot_product_attention(
             query, key, value, attn_mask=attention_mask
         ).transpose(1, 2)
-        attn_weight = None
 
         context_layer = self._merge_heads(attn_output, self.num_heads, self.head_dim)
 
@@ -339,13 +324,7 @@ class QWenPreTrainedModel(PreTrainedModel):
                     ),
                 )
 
-    def _set_gradient_checkpointing(self, module, value=False):
-        if isinstance(module, QWenModel):
-            module.gradient_checkpointing = value
-
-
 class QWenModel(QWenPreTrainedModel):
-    _keys_to_ignore_on_load_missing = ["attn.masked_bias"]
 
     def __init__(self, config):
         super().__init__(config)
@@ -353,7 +332,6 @@ class QWenModel(QWenPreTrainedModel):
         self.num_hidden_layers = config.num_hidden_layers
         self.embed_dim = config.hidden_size
 
-        self.gradient_checkpointing = False
         self.use_dynamic_ntk = config.use_dynamic_ntk
         self.seq_length = config.seq_length
 
@@ -381,12 +359,6 @@ class QWenModel(QWenPreTrainedModel):
 
         self.post_init()
 
-    def get_input_embeddings(self):
-        return self.wte
-
-    def set_input_embeddings(self, new_embeddings):
-        self.wte = new_embeddings
-
     def get_ntk_alpha(self, true_seq_len):
         context_value = math.log(true_seq_len / self.seq_length, 2) + 1
         ntk_alpha = 2 ** math.ceil(context_value) - 1
@@ -398,8 +370,6 @@ class QWenModel(QWenPreTrainedModel):
         input_ids: Optional[torch.LongTensor] = None,
         past_key_values: Optional[Tuple[Tuple[torch.Tensor]]] = None,
         attention_mask: Optional[torch.FloatTensor] = None,
-        token_type_ids: Optional[torch.LongTensor] = None,
-        position_ids: Optional[torch.LongTensor] = None,
         head_mask: Optional[torch.FloatTensor] = None,
         inputs_embeds: Optional[torch.FloatTensor] = None,
         encoder_hidden_states: Optional[torch.Tensor] = None,
@@ -434,26 +404,8 @@ class QWenModel(QWenPreTrainedModel):
         else:
             raise ValueError("You have to specify either input_ids or inputs_embeds")
 
-        device = input_ids.device if input_ids is not None else inputs_embeds.device
-
-        if token_type_ids is not None:
-            token_type_ids = token_type_ids.view(-1, input_shape[-1])
-        if position_ids is not None:
-            position_ids = position_ids.view(-1, input_shape[-1])
-
         if past_key_values is None:
-            past_length = 0
             past_key_values = tuple([None] * len(self.h))
-        else:
-            past_length = past_key_values[0][0].size(-2)
-        if position_ids is None:
-            position_ids = torch.arange(
-                past_length,
-                input_shape[-1] + past_length,
-                dtype=torch.long,
-                device=device,
-            )
-            position_ids = position_ids.unsqueeze(0).view(-1, input_shape[-1])
 
         if attention_mask is not None:
             if batch_size <= 0:
@@ -504,13 +456,6 @@ class QWenModel(QWenPreTrainedModel):
         hidden_states = self.drop(hidden_states)
         output_shape = input_shape + (hidden_states.size(-1),)
 
-        if self.gradient_checkpointing and self.training:
-            if use_cache:
-                logger.warning_once(
-                    "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..."
-                )
-                use_cache = False
-
         presents = () if use_cache else None
         all_self_attentions = () if output_attentions else None
         all_hidden_states = () if output_hidden_states else None
@@ -518,26 +463,6 @@ class QWenModel(QWenPreTrainedModel):
             if output_hidden_states:
                 all_hidden_states = all_hidden_states + (hidden_states,)
 
-            if self.gradient_checkpointing and self.training:
-
-                def create_custom_forward(module):
-                    def custom_forward(*inputs):
-                        # None for past_key_value
-                        return module(*inputs, use_cache, output_attentions)
-
-                    return custom_forward
-
-                outputs = torch.utils.checkpoint.checkpoint(
-                    create_custom_forward(block),
-                    hidden_states,
-                    rotary_pos_emb_list,
-                    None,
-                    attention_mask,
-                    head_mask[i],
-                    encoder_hidden_states,
-                    encoder_attention_mask,
-                )
-            else:
             outputs = block(
                 hidden_states,
                 layer_past=layer_past,
@@ -574,8 +499,6 @@ class QWenModel(QWenPreTrainedModel):
 
 
 class QWenLMHeadModel(QWenPreTrainedModel):
-    _keys_to_ignore_on_load_missing = [r"h\.\d+\.attn\.rotary_emb\.inv_freq"]
-    _keys_to_ignore_on_load_unexpected = [r"h\.\d+\.attn\.masked_bias"]
 
     def __init__(self, config):
         super().__init__(config)
@@ -584,12 +507,6 @@ class QWenLMHeadModel(QWenPreTrainedModel):
         self.lm_head = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
         self.post_init()
 
-    def get_output_embeddings(self):
-        return self.lm_head
-
-    def set_output_embeddings(self, new_embeddings):
-        self.lm_head = new_embeddings
-
     def prepare_inputs_for_generation(
         self, input_ids, past_key_values=None, inputs_embeds=None, **kwargs
     ):
@@ -620,8 +537,6 @@ class QWenLMHeadModel(QWenPreTrainedModel):
         input_ids: Optional[torch.LongTensor] = None,
         past_key_values: Optional[Tuple[Tuple[torch.Tensor]]] = None,
         attention_mask: Optional[torch.FloatTensor] = None,
-        token_type_ids: Optional[torch.LongTensor] = None,
-        position_ids: Optional[torch.LongTensor] = None,
         head_mask: Optional[torch.FloatTensor] = None,
         inputs_embeds: Optional[torch.FloatTensor] = None,
         encoder_hidden_states: Optional[torch.Tensor] = None,
@@ -637,8 +552,6 @@ class QWenLMHeadModel(QWenPreTrainedModel):
             input_ids,
             past_key_values=past_key_values,
             attention_mask=attention_mask,
-            token_type_ids=token_type_ids,
-            position_ids=position_ids,
             head_mask=head_mask,
             inputs_embeds=inputs_embeds,
             encoder_hidden_states=encoder_hidden_states,
@@ -694,8 +607,8 @@ class QWenLMHeadModel(QWenPreTrainedModel):
             else self.generation_config
         )
 
-        assert stream is _SENTINEL, _ERROR_STREAM_IN_CHAT
+        assert stream is _SENTINEL
-        assert generation_config.chat_format == "chatml", _ERROR_BAD_CHAT_FORMAT
+        assert generation_config.chat_format == "chatml"
         if history is None:
             history = []
         else:
@@ -746,81 +659,6 @@ class QWenLMHeadModel(QWenPreTrainedModel):
 
         return response, history
 
-    def chat_stream(
-        self,
-        tokenizer: PreTrainedTokenizer,
-        query: str,
-        history: Optional[HistoryType],
-        system: str = "You are a helpful assistant.",
-        stop_words_ids: Optional[List[List[int]]] = None,
-        logits_processor: Optional[LogitsProcessorList] = None,
-        generation_config: Optional[GenerationConfig] = None,
-        **kwargs,
-    ) -> Generator[str, Any, None]:
-        generation_config = (
-            generation_config
-            if generation_config is not None
-            else self.generation_config
-        )
-        assert generation_config.chat_format == "chatml", _ERROR_BAD_CHAT_FORMAT
-        if history is None:
-            history = []
-        if stop_words_ids is None:
-            stop_words_ids = []
-
-        max_window_size = kwargs.get("max_window_size", None)
-        if max_window_size is None:
-            max_window_size = generation_config.max_window_size
-        raw_text, context_tokens = make_context(
-            tokenizer,
-            query,
-            history=history,
-            system=system,
-            max_window_size=max_window_size,
-            chat_format=generation_config.chat_format,
-        )
-
-        stop_words_ids.extend(
-            get_stop_words_ids(generation_config.chat_format, tokenizer)
-        )
-        if stop_words_ids is not None:
-            stop_words_logits_processor = StopWordsLogitsProcessor(
-                stop_words_ids=stop_words_ids,
-                eos_token_id=generation_config.eos_token_id,
-            )
-            if logits_processor is None:
-                logits_processor = LogitsProcessorList([stop_words_logits_processor])
-            else:
-                logits_processor.append(stop_words_logits_processor)
-        input_ids = torch.tensor([context_tokens]).to(self.device)
-
-        from transformers_stream_generator.main import (
-            NewGenerationMixin,
-            StreamGenerationConfig,
-        )
-
-        self.__class__.generate_stream = NewGenerationMixin.generate
-        self.__class__.sample_stream = NewGenerationMixin.sample_stream
-        stream_config = StreamGenerationConfig(
-            **generation_config.to_dict(), do_stream=True
-        )
-
-        def stream_generator():
-            outputs = []
-            for token in self.generate_stream(
-                input_ids,
-                generation_config=stream_config,
-                logits_processor=logits_processor,
-                seed=-1,
-                **kwargs,
-            ):
-                outputs.append(token.item())
-                yield tokenizer.decode(
-                    outputs, skip_special_tokens=True, errors="ignore"
-                )
-
-        return stream_generator()
-
     def generate(
         self,
         inputs: Optional[torch.Tensor] = None,