update inference

eval_model.py

@@ -120,7 +120,7 @@ def main():
     # history_cnt需要设为偶数，即【用户问题, 模型回答】为1组；设置为0时，即当前query不携带历史上文
     # 模型未经过外推微调时，在更长的上下文的chat_template时难免出现性能的明显退化，因此需要注意此处设置
     parser.add_argument('--history_cnt', default=0, type=int)
-    parser.add_argument('--stream', default=True, type=bool)
+    parser.add_argument('--stream', default=False, type=bool)
     parser.add_argument('--load', default=0, type=int, help="0: 原生torch权重，1: transformers加载")
     parser.add_argument('--model_mode', default=1, type=int,
                         help="0: 预训练模型，1: SFT-Chat模型，2: RLHF-Chat模型，3: Reason模型")
@@ -154,7 +154,7 @@ def main():
                 max_new_tokens=args.max_seq_len,
                 temperature=args.temperature,
                 top_p=args.top_p,
-                stream=True,
+                stream=args.stream,
                 pad_token_id=tokenizer.pad_token_id
             )
 

model/model.py

@@ -4,7 +4,7 @@ import inspect
 import time
 
 from .LMConfig import LMConfig
-from typing import Any, Optional, Tuple, List
+from typing import Any, Optional, Tuple, List, Union
 import numpy as np
 import torch
 import torch.nn.functional as F
@@ -307,6 +307,7 @@ class MiniMindLM(PreTrainedModel):
                 input_ids: Optional[torch.Tensor] = None,
                 past_key_values: Optional[List[Tuple[torch.Tensor, torch.Tensor]]] = None,
                 use_cache: bool = False,
+                logits_to_keep: Union[int, torch.Tensor] = 0,
                 **args):
         past_key_values = past_key_values or [None] * len(self.layers)
         start_pos = args.get('start_pos', 0)
@@ -320,7 +321,9 @@ class MiniMindLM(PreTrainedModel):
                 use_cache=use_cache
             )
             past_kvs.append(past_kv)
-        logits = self.output(self.norm(h))
+
+        slice_indices = slice(-logits_to_keep, None) if isinstance(logits_to_keep, int) else logits_to_keep
+        logits = self.output(self.norm(h)[:, slice_indices, :])
         aux_loss = sum(l.feed_forward.aux_loss for l in self.layers if isinstance(l.feed_forward, MOEFeedForward))
         self.OUT.__setitem__('logits', logits)
         self.OUT.__setitem__('aux_loss', aux_loss)
@@ -329,7 +332,7 @@ class MiniMindLM(PreTrainedModel):
 
     @torch.inference_mode()
     def generate(self, input_ids, eos_token_id=2, max_new_tokens=1024, temperature=0.75, top_p=0.90,
-                 stream=False, rp=1., use_cache=True, pad_token_id=0, **args):
+                 stream=False, rp=1., use_cache=True, pad_token_id=0, num_return_sequences=1, **args):
         # 流式生成
         if stream:
             return self._stream(input_ids, eos_token_id, max_new_tokens, temperature, top_p, rp, use_cache, **args)
@@ -338,11 +341,13 @@ class MiniMindLM(PreTrainedModel):
         generated = []
         for i in range(input_ids.size(0)):
             non_pad = input_ids[i][input_ids[i] != pad_token_id].unsqueeze(0)
+            for _ in range(num_return_sequences):
                 out = self._stream(non_pad, eos_token_id, max_new_tokens, temperature, top_p, rp, use_cache, **args)
                 tokens_list = [tokens[:, -1:] for tokens in out]
                 gen = torch.cat(tokens_list, dim=-1) if tokens_list else non_pad
                 full_sequence = torch.cat([non_pad, gen], dim=-1)
                 generated.append(full_sequence)
+
         max_length = max(seq.size(1) for seq in generated)
         generated = [
             torch.cat(
@@ -350,7 +355,11 @@ class MiniMindLM(PreTrainedModel):
                 dim=-1)
             for seq in generated
         ]
-        return torch.cat(generated, dim=0)
+        output = torch.cat(generated, dim=0)
+        res = output.view(input_ids.size(0), num_return_sequences, -1)
+        res = res.squeeze(0) if input_ids.size(0) == 1 else res
+        res = res.squeeze(1) if num_return_sequences == 1 else res
+        return res
 
     def _stream(self, input_ids, eos_token_id, max_new_tokens, temperature, top_p, rp, use_cache, **args):
         start, first_seq, past_kvs = input_ids.shape[1], True, None