[Fix] Llama3 Load/Omit CheckpointIO Temporarily (#5717)

* Fix Llama3 Load error
* Omit Checkpoint IO Temporarily

colossalai/inference/core/engine.py

@@ -24,7 +24,7 @@ from colossalai.inference.modeling.policy import model_policy_map
 from colossalai.inference.sampler import search_tokens
 from colossalai.inference.spec import Drafter, GlideInput
 from colossalai.inference.struct import Sequence
-from colossalai.inference.utils import get_model_size, has_index_file
+from colossalai.inference.utils import get_model_size
 from colossalai.interface import ModelWrapper
 from colossalai.logging import get_dist_logger
 from colossalai.pipeline.stage_manager import PipelineStageManager
@@ -113,18 +113,15 @@ class InferenceEngine:
             model_policy (Policy): the policy to replace the model
         """
 
-        casuallm = None
         if isinstance(model_or_path, str):
             try:
                 hf_config = AutoConfig.from_pretrained(model_or_path, trust_remote_code=True)
                 arch = getattr(hf_config, "architectures")[0]
                 if arch in _supported_models.keys():
-                    casuallm = _supported_models[arch](hf_config)
-                    if isinstance(casuallm, AutoModelForCausalLM):
-                        # NOTE(caidi) It's necessary to add half() here, otherwise baichuan13B will overflow the memory.
-                        model = AutoModelForCausalLM.from_pretrained(model_or_path, trust_remote_code=True).half()
-                    else:
-                        model = _supported_models[arch](hf_config)
+                    # NOTE(lry89757) Currently we load the model using transformers-api,
+                    # but we will use lazy tensor and checkpoint io to accelerate
+                    # the model load process in the future.
+                    model = _supported_models[arch].from_pretrained(model_or_path, trust_remote_code=True)
                 else:
                     raise ValueError(f"Model {arch} is not supported.")
 
@@ -175,13 +172,14 @@ class InferenceEngine:
                 f"After the shard, Rank: [{dist.get_rank()}], model size: {get_model_size(self.model)} GB, model's device is: {model.device}"
             )
 
-        if isinstance(model_or_path, str) and not isinstance(casuallm, AutoModelForCausalLM):
-            from colossalai.inference.core.plugin import InferCheckpoint_io
+        # NOTE(lry89757) Deprecated currently, will reused when introduce lazy tensor
+        # if isinstance(model_or_path, str) and not isinstance(casuallm, AutoModelForCausalLM):
+        #     from colossalai.inference.core.plugin import InferCheckpoint_io
 
-            cpt_io = InferCheckpoint_io()
-            if_has_index_file, model_index_file = has_index_file(model_or_path)
-            assert if_has_index_file, "the model path is invalid"
-            cpt_io.load_model(self.model, model_index_file)
+        #     cpt_io = InferCheckpoint_io()
+        #     if_has_index_file, model_index_file = has_index_file(model_or_path)
+        #     assert if_has_index_file, "the model path is invalid"
+        #     cpt_io.load_model(self.model, model_index_file)
 
         free_gpu_memory, total_gpu_memory = torch.cuda.mem_get_info()
         peak_memory = init_gpu_memory - free_gpu_memory

colossalai/inference/executor/rpc_worker.py

@@ -1,4 +1,3 @@
-import os
 from typing import List, Tuple, Union
 
 import rpyc
@@ -19,7 +18,7 @@ from colossalai.inference.modeling.policy import (
     model_policy_map,
 )
 from colossalai.inference.sampler import search_tokens
-from colossalai.inference.utils import get_model_size, has_index_file
+from colossalai.inference.utils import get_model_size
 from colossalai.interface import ModelWrapper
 from colossalai.logging import get_dist_logger
 from colossalai.pipeline.stage_manager import PipelineStageManager
@@ -178,15 +177,19 @@ class rpcWorkerService(rpyc.Service):
         """
 
         if isinstance(model_or_path, str):
-            is_local = os.path.isdir(model_or_path)
+            # is_local = os.path.isdir(model_or_path)
             try:
                 hf_config = AutoConfig.from_pretrained(model_or_path, trust_remote_code=True)
                 arch = getattr(hf_config, "architectures")[0]
-                if is_local:
-                    model = _SUPPORTED_MODELS[arch](hf_config)
-                else:
-                    # load the real checkpoint
+                # NOTE(lry89757) Currently we load the model using transformers-api,
+                # but we will use lazy tensor and checkpoint io to accelerate
+                # the model load process in the future.
                 model = _SUPPORTED_MODELS[arch].from_pretrained(model_or_path, trust_remote_code=True)
+                # if is_local:
+                #     model = _SUPPORTED_MODELS[arch](hf_config)
+                # else:
+                #     # load the real checkpoint
+                #     model = _SUPPORTED_MODELS[arch].from_pretrained(model_or_path, trust_remote_code=True)
             except Exception as e:
                 logger.error(
                     f"An exception occurred during loading model: {e}, model should be loaded by transformers\n"
@@ -235,13 +238,14 @@ class rpcWorkerService(rpyc.Service):
                 f"After the shard, Rank: [{dist.get_rank()}], model size: {get_model_size(self.model)} GB, model's device is: {model.device}"
             )
 
-        if isinstance(model_or_path, str) and is_local:
-            from colossalai.inference.core.plugin import InferCheckpoint_io
+        # NOTE(lry89757) Deprecated currently, will reused when introduce lazy tensor
+        # if isinstance(model_or_path, str) and is_local:
+        #     from colossalai.inference.core.plugin import InferCheckpoint_io
 
-            cpt_io = InferCheckpoint_io()
-            if_has_index_file, model_index_file = has_index_file(model_or_path)
-            assert if_has_index_file, "the model path is invalid"
-            cpt_io.load_model(self.model, model_index_file)
+        #     cpt_io = InferCheckpoint_io()
+        #     if_has_index_file, model_index_file = has_index_file(model_or_path)
+        #     assert if_has_index_file, "the model path is invalid"
+        #     cpt_io.load_model(self.model, model_index_file)
 
         free_gpu_memory, total_gpu_memory = torch.cuda.mem_get_info()
         peak_memory = init_gpu_memory - free_gpu_memory

colossalai/inference/modeling/models/nopadding_llama.py

@@ -646,6 +646,7 @@ class NopadLlamaAttention(LlamaAttention, ParallelModule):
     def _load_from_state_dict(
         self, state_dict, prefix, local_metadata, strict, missing_keys, unexpected_keys, error_msgs
     ):
+        if self.num_heads == self.num_key_value_heads:
             # NOTE This is a hack to ensure we could load the right weight from LlamaAttention checkpoint due to the use of torch.stack(q_weight, k_weight, v_weight)
             for hook in self._load_state_dict_pre_hooks.values():
                 hook(state_dict, prefix, local_metadata, strict, missing_keys, unexpected_keys, error_msgs)