tiny fix

Former-commit-id: 450910c1db969533c5268022cb064cbc2c9cb7e6

README.md

@@ -208,6 +208,7 @@ accelerate launch src/train_XX.py # arguments (same as above)
 compute_environment: LOCAL_MACHINE
 deepspeed_config:
   gradient_accumulation_steps: 4
+  gradient_clipping: 0.5
   offload_optimizer_device: none
   offload_param_device: none
   zero3_init_flag: false

src/export_model.py

@@ -13,6 +13,7 @@ def main():
     model.save_pretrained(training_args.output_dir, max_shard_size="10GB")
     tokenizer.save_pretrained(training_args.output_dir)
     print("model and tokenizer have been saved at:", training_args.output_dir)
+    print("Remember to copy the *.py files from the original directory.")
 
 
 if __name__ == "__main__":

src/utils/data_collator.py

@@ -26,8 +26,10 @@ class DynamicDataCollatorWithPadding(DataCollatorWithPadding):
         """
         batch_size, seq_length = input_ids.size()
         attention_mask = torch.ones((batch_size, seq_length), device=device)
+
         for i, seq in enumerate(input_ids):
             attention_mask[i, :(seq != self.tokenizer.pad_token_id).nonzero()[0].item()] = 0 # padding
+
         attention_mask = attention_mask.bool()
         return attention_mask
 
@@ -49,7 +51,11 @@ class DynamicDataCollatorWithPadding(DataCollatorWithPadding):
                 labels = [torch.tensor(feature["labels"]).flip(0) for feature in features]
             input_ids = input_ids + labels # pad them to the same length
 
-        input_ids = torch.nn.utils.rnn.pad_sequence(input_ids, batch_first=True, padding_value=self.tokenizer.pad_token_id).flip(-1)
+        input_ids = torch.nn.utils.rnn.pad_sequence(
+            input_ids,
+            batch_first=True,
+            padding_value=self.tokenizer.pad_token_id
+        ).flip(-1)
 
         batch = {}
 

src/utils/seq2seq.py

@@ -35,8 +35,9 @@ class ComputeMetrics:
         score_dict = {"rouge-1": [], "rouge-2": [], "rouge-l": [], "bleu-4": []}
 
         for pred, label in zip(preds, labels):
-            pred = pred[len(label) - np.sum(label == IGNORE_INDEX) : len(pred) - np.sum(pred == IGNORE_INDEX)] # remove prompts
-            label = label[:len(label) - np.sum(label == IGNORE_INDEX)]
+            pred_pad_len, label_pad_len = np.sum(pred == IGNORE_INDEX), np.sum(label == IGNORE_INDEX)
+            pred = pred[len(label) - label_pad_len : len(pred) - pred_pad_len] # remove prompts
+            label = label[:len(label) - label_pad_len]
 
             hypothesis = list(jieba.cut(self.tokenizer.decode(pred, skip_special_tokens=True)))
             reference = list(jieba.cut(self.tokenizer.decode(label, skip_special_tokens=True)))
@@ -79,8 +80,9 @@ class Seq2SeqPeftTrainer(PeftTrainer):
         with open(output_prediction_file, "w", encoding="utf-8") as writer:
             res: List[str] = []
             for pred, label in zip(predict_results.predictions, predict_results.label_ids):
-                pred = pred[len(label) - np.sum(label == IGNORE_INDEX) : len(pred) - np.sum(pred == IGNORE_INDEX)] # remove prompts
-                label = label[:len(label) - np.sum(label == IGNORE_INDEX)]
+                pred_pad_len, label_pad_len = np.sum(pred == IGNORE_INDEX), np.sum(label == IGNORE_INDEX)
+                pred = pred[len(label) - label_pad_len : len(pred) - pred_pad_len] # remove prompts
+                label = label[:len(label) - label_pad_len]
 
                 pred = self.tokenizer.decode(pred, skip_special_tokens=True)
                 label = self.tokenizer.decode(label, skip_special_tokens=True)