update model

Author: Nghi Bui

codetf/models/__init__.py

@@ -51,6 +51,13 @@ def load_model_pipeline(model_name, model_type="base", task="sum",
 
     return model
 
+def load_model_from_path(checkpoint_path, tokenizer_path, model_name, is_eval=True, load_in_8bit=False, load_in_4bit=False):
+    model_cls = registry.get_model_class(model_name)
+    model = model_cls.from_custom(checkpoint_path=checkpoint_path, tokenizer_path=tokenizer_path, load_in_8bit=load_in_8bit, load_in_4bit=load_in_4bit)
+    if is_eval:
+        model.eval()
+
+    return model
 
 class ModelZoo:
     def __init__(self, config_files):

codetf/models/base_model.py

@@ -45,7 +45,17 @@ def from_pretrained(model_class, model_card, load_in_8bit=False, load_in_4bit=Fa
         Build a pretrained model from default configuration file, specified by model_type.
         """
         model_config = OmegaConf.load(get_abs_path(model_class.MODEL_DICT))[model_card]
-        model_cls = model_class.load_model_from_config(model_config=model_config, load_in_8bit=load_in_8bit, load_in_4bit=load_in_4bit, weight_sharding=weight_sharding)
+        model_cls = model_class.load_huggingface_model_from_config(model_config=model_config, load_in_8bit=load_in_8bit, load_in_4bit=load_in_4bit, weight_sharding=weight_sharding)
+
+        return model_cls
+    
+
+    @classmethod
+    def from_custom(model_class, checkpoint_path, tokenizer_path, load_in_8bit=False, load_in_4bit=False):
+        """
+        Build a pretrained model from default configuration file, specified by model_type.
+        """
+        model_cls = model_class.load_custom_model(checkpoint_path, tokenizer_path, load_in_8bit=load_in_8bit, load_in_4bit=load_in_4bit)
 
         return model_cls
 

codetf/models/causal_lm_models/__init__.py

@@ -29,7 +29,7 @@ def init_tokenizer(cls, model):
         return tokenizer
 
     @classmethod
-    def load_model_from_config(model_class, model_config, load_in_8bit=False, load_in_4bit=False, weight_sharding=False):
+    def load_huggingface_model_from_config(model_class, model_config, load_in_8bit=False, load_in_4bit=False, weight_sharding=False):
         checkpoint = model_config["huggingface_url"]
 
         if load_in_8bit and load_in_4bit:
@@ -79,6 +79,35 @@ def load_model_from_config(model_class, model_config, load_in_8bit=False, load_i
             model_config=model_config,
             tokenizer=tokenizer
         )
+
+    @classmethod
+    def load_custom_model(model_class, checkpoint_path, tokenizer_path, load_in_8bit=False, load_in_4bit=False):
+
+        if load_in_8bit and load_in_4bit:
+            raise ValueError("Only one of load_in_8bit or load_in_4bit can be True. Please choose one.")
+        
+        if load_in_8bit:
+            model = AutoModelForCausalLM.from_pretrained(checkpoint_path, 
+                                        load_in_8bit=load_in_8bit, 
+                                        low_cpu_mem_usage=True,
+                                        device_map="auto")
+        elif load_in_4bit:
+            model = AutoModelForCausalLM.from_pretrained(checkpoint_path, 
+                                        load_in_4bit=load_in_4bit, 
+                                        low_cpu_mem_usage=True,
+                                        device_map="auto")
+        else:
+            model = AutoModelForCausalLM.from_pretrained(checkpoint_path, 
+                                        low_cpu_mem_usage=True,
+                                        device_map="auto")
+
+        tokenizer = model_class.init_tokenizer(tokenizer_path)
+        
+        return model_class(
+            model=model,
+            model_config=model_config,
+            tokenizer=tokenizer
+        )
 
     def forward(self, sources, max_length=512):
         encoding = self.tokenizer(sources, return_tensors='pt').to(self.device)

codetf/models/seq2seq_models/__init__.py

@@ -30,15 +30,15 @@ def init_tokenizer(cls, model):
 
 
     @classmethod
-    def load_model_from_config(model_class, model_config, load_in_8bit=False, load_in_4bit=False, weight_sharding=False):
+    def load_huggingface_model_from_config(model_class, model_config, load_in_8bit=False, load_in_4bit=False, weight_sharding=False):
 
         checkpoint = model_config["huggingface_url"]
 
         if load_in_8bit and load_in_4bit:
             raise ValueError("Only one of load_in_8bit or load_in_4bit can be True. Please choose one.")
 
         # This "device" is for the case of CodeT5plus, will be removed in the future
-        device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
+        device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
         if weight_sharding:
             try:
                 # Try to download and load the json index file
@@ -85,12 +85,10 @@ def load_model_from_config(model_class, model_config, load_in_8bit=False, load_i
             else:
                 if model_config["device_map"]:
                     model = AutoModelForSeq2SeqLM.from_pretrained(checkpoint, 
-                                                load_in_4bit=load_in_4bit, 
                                                 low_cpu_mem_usage=True,
                                                 device_map=model_config["device_map"], trust_remote_code=model_config["trust_remote_code"])
                 else:
                     model = AutoModelForSeq2SeqLM.from_pretrained(checkpoint, 
-                                                load_in_4bit=load_in_4bit, 
                                                 low_cpu_mem_usage=True,
                                                 trust_remote_code=model_config["trust_remote_code"]).to(device)
 
@@ -103,6 +101,35 @@ def load_model_from_config(model_class, model_config, load_in_8bit=False, load_i
             tokenizer=tokenizer
         )
 
+    @classmethod
+    def load_custom_model(model_class, checkpoint_path, tokenizer_path, load_in_8bit=False, load_in_4bit=False):
+
+        if load_in_8bit and load_in_4bit:
+            raise ValueError("Only one of load_in_8bit or load_in_4bit can be True. Please choose one.")
+        
+        if load_in_8bit:
+            model = AutoModelForSeq2SeqLM.from_pretrained(checkpoint_path, 
+                                        load_in_8bit=load_in_8bit, 
+                                        low_cpu_mem_usage=True,
+                                        device_map="auto")
+        elif load_in_4bit:
+            model = AutoModelForSeq2SeqLM.from_pretrained(checkpoint_path, 
+                                        load_in_4bit=load_in_4bit, 
+                                        low_cpu_mem_usage=True,
+                                        device_map="auto")
+        else:
+            model = AutoModelForSeq2SeqLM.from_pretrained(checkpoint_path, 
+                                        low_cpu_mem_usage=True,
+                                        device_map="auto")
+
+        tokenizer = model_class.init_tokenizer(tokenizer_path)
+        
+        return model_class(
+            model=model,
+            model_config=model_config,
+            tokenizer=tokenizer
+        )
+
 
     def forward(self, sources, max_length=512, beam_size=5):
         encoding = self.tokenizer(sources, return_tensors='pt').to(self.model.device)