add mistral support

higgsfield · higgsfield · commit 61bc432622f4 · 2023-11-15T05:33:36.000+06:00
diff --git a/README.md b/README.md
@@ -84,6 +84,7 @@ You can use whatever you want, whenever you want. We just introduce a simple int
 
 **Clouds we have tested on:**
 
+- Azure
 - LambdaLabs
 - FluidStack
 
diff --git a/higgsfield/mistral/__init__.py b/higgsfield/mistral/__init__.py
diff --git a/higgsfield/mistral/mistral.py b/higgsfield/mistral/mistral.py
@@ -0,0 +1,219 @@
+import os
+import functools
+from pathlib import Path
+
+import torch
+import torch.distributed as dist
+
+from torch.distributed.fsdp.fully_sharded_data_parallel import (
+    FullyShardedDataParallel as FSDP,
+    CPUOffload,
+)
+
+from torch.distributed.fsdp import (
+    MixedPrecision,
+    ShardingStrategy,
+)
+from torch.distributed.fsdp.wrap import (
+    transformer_auto_wrap_policy,
+)
+from torch.distributed.algorithms._checkpoint.checkpoint_wrapper import (
+    checkpoint_wrapper,
+    CheckpointImpl,
+    apply_activation_checkpointing,
+)
+
+from transformers import (
+    MistralForCausalLM,
+    MistralConfig,
+    default_data_collator,
+)
+from transformers.models.mistral.modeling_mistral import MistralDecoderLayer
+from optimum.bettertransformer import BetterTransformer
+
+from higgsfield.checkpoint.fsdp_checkpoint import (
+    save_distributed_model_rank0,
+    fsdp_model_state_dict_rank0,
+)
+
+from higgsfield.mistral.mistral_utils import (
+    load_mistral_from_checkpoint,
+    load_mistral_from_config,
+)
+
+class Mistral(FSDP):
+    def __init__(
+        self,
+        model_name,
+        checkpoint_path=None,
+        zero_stage=3,
+        fast_attn=False,
+        precision="bf16",
+        cpu_init_rank0=False,
+        cpu_offload=False,
+        num_embeddings=None,
+        cache_dir=None,
+    ):
+        
+        rank = dist.get_rank()
+        
+        
+        model = MistralForCausalLM.from_pretrained(model_name, cache_dir=cache_dir)
+            
+        if num_embeddings:
+            model.resize_token_embeddings(num_embeddings)
+
+            
+        if fast_attn:
+            #raise NotImplementedError("Fast attention is not supported yet")
+            model = BetterTransformer.transform(model)
+        
+        fpSixteen = MixedPrecision(
+            param_dtype=torch.float16,
+            reduce_dtype=torch.float16,
+            buffer_dtype=torch.float16,
+        )
+
+        bfSixteen_mixed = MixedPrecision(
+            param_dtype=torch.float32,
+            reduce_dtype=torch.bfloat16,
+            buffer_dtype=torch.bfloat16,
+        )
+        
+        pure_bf16 = False
+        if precision == "fp16":
+            mixed_precision_policy = fpSixteen
+            
+        elif precision == "bf16":
+            mixed_precision_policy = None
+            pure_bf16 = True
+            
+        elif precision == "bf16_mixed":
+            mixed_precision_policy = bfSixteen_mixed
+
+        else:
+            mixed_precision_policy = None
+            
+        if pure_bf16:
+            model.to(torch.bfloat16) 
+
+        wrapping_policy = functools.partial(
+            transformer_auto_wrap_policy,
+            transformer_layer_cls={
+                MistralDecoderLayer,
+            }
+        )
+        
+        if zero_stage == 0:
+            sharding_strategy = ShardingStrategy.NO_SHARD
+        
+        elif zero_stage == 1:
+            raise NotImplementedError("stage 1 is not supported. Only 0 2 3")
+            
+        elif zero_stage == 2:
+            sharding_strategy = ShardingStrategy.SHARD_GRAD_OP
+            
+        elif zero_stage == 3:
+            sharding_strategy = ShardingStrategy.FULL_SHARD
+        else:
+            raise NotImplementedError("stage can be only 0 2 3")
+
+        if cpu_init_rank0 and rank != 0:
+            param_init_fn = lambda module: module.to_empty(
+                device=torch.device('cuda'),
+                recurse=False,
+            )
+        else:
+            param_init_fn = None
+            
+        if cpu_offload:
+            cpu_offload = CPUOffload(offload_params=True)
+        else:
+            cpu_offload = None
+
+        super().__init__(
+            model,
+            auto_wrap_policy=wrapping_policy,
+            cpu_offload=cpu_offload,
+            mixed_precision=mixed_precision_policy,
+            sharding_strategy=sharding_strategy,
+            device_id=torch.cuda.current_device(),
+            limit_all_gathers=True,
+            sync_module_states=cpu_init_rank0,
+            param_init_fn=param_init_fn,
+        )
+        
+        non_reentrant_wrapper = functools.partial(
+            checkpoint_wrapper,
+            checkpoint_impl=CheckpointImpl.NO_REENTRANT,
+        )
+
+        check_fn = lambda submodule: isinstance(submodule, MistralDecoderLayer)
+
+        apply_activation_checkpointing(
+            self,
+            checkpoint_wrapper_fn=non_reentrant_wrapper,
+            check_fn=check_fn,
+        )
+        
+        fsdp = True
+        self.precision = precision
+        self.fsdp = fsdp
+        self.model_name = model_name
+        self.num_embeddings = num_embeddings
+    
+    def __call__(self, batch):
+        local_rank = int(os.environ["LOCAL_RANK"])
+        
+        for key in batch.keys():
+            batch[key] = batch[key].to(local_rank)
+            
+        if self.precision == "fp16":
+            with torch.cuda.amp.autocast(): 
+                loss = super().__call__(**batch).loss
+        else:
+            loss = super().__call__(**batch).loss
+            
+        return loss
+    
+    def save_model(self, save_path):
+        '''
+            Save model's weight to master node 
+                ~/.cache/higgsfield/{save_path}
+        '''
+        if "/" == save_path[0]:
+            save_path = save_path[1:]
+            
+        head, tail = os.path.split(save_path)
+        
+        path = Path.home() / ".cache/higgsfield" / head
+        path.mkdir(exist_ok=True, parents=True)
+    
+        save_distributed_model_rank0(path / tail, self)
+        
+    def save_huggingface_model(self, save_path):
+        '''
+            Save model's weight in huggingface format to master node 
+                ~/.cache/higgsfield/{save_path}
+        '''
+        if "/" == save_path[0]:
+            save_path = save_path[1:]
+            
+        head, tail = os.path.split(save_path)
+        
+        path = Path.home() / ".cache/higgsfield" / head
+        path.mkdir(exist_ok=True, parents=True)
+        cpu_state = fsdp_model_state_dict_rank0(self)
+        
+        if dist.get_rank() == 0:
+           model = load_mistral_from_config(self.model_name, num_embeddings=self.num_embeddings)
+           model.load_state_dict(cpu_state)
+           model.save_pretrained(path / tail)
+        
+    def push_to_hub(self, repo_id, token):
+        cpu_state = fsdp_model_state_dict_rank0(self)
+        
+        if dist.get_rank() == 0:
+           model = load_mistral_from_config(self.model_name, num_embeddings=self.num_embeddings)
+           model.load_state_dict(cpu_state) 
+           model.push_to_hub(repo_id, token=token)
diff --git a/higgsfield/mistral/mistral_loader.py b/higgsfield/mistral/mistral_loader.py
@@ -0,0 +1,110 @@
+import torch.distributed as dist
+
+from torch.utils.data import (
+    DistributedSampler, 
+    DataLoader
+)
+
+from transformers import (
+    AutoTokenizer, 
+    default_data_collator
+)
+
+from higgsfield.dataset import TorchCompletionDataset
+
+IGNORE_INDEX = -100
+DEFAULT_PAD_TOKEN = "<|pad|>"
+DEFAULT_EOS_TOKEN = "<|endoftext|>"
+DEFAULT_UNK_TOKEN = "<|unk|>"
+
+def get_tokenizer(model_name, max_length, cache_dir=None):
+
+    tokenizer = AutoTokenizer.from_pretrained(
+        model_name,
+        model_max_length=max_length,
+        padding_side="right",
+        use_fast=False,
+        pad_token=DEFAULT_PAD_TOKEN,
+        trust_remote_code=True,
+        cache_dir=cache_dir,
+    )
+
+    special_tokens_dict = dict()
+    if tokenizer.pad_token is None:
+        special_tokens_dict["pad_token"] = DEFAULT_PAD_TOKEN
+    if tokenizer.eos_token is None:
+        special_tokens_dict["eos_token"] = DEFAULT_EOS_TOKEN
+    if tokenizer.unk_token is None:
+        special_tokens_dict["unk_token"] = DEFAULT_UNK_TOKEN
+
+    tokenizer.add_special_tokens(special_tokens_dict)
+    
+    return tokenizer
+
+class HiggsfieldSampler(DistributedSampler):
+    def __init__(
+        self, 
+        dataset, 
+        shuffle=True,
+        seed=0, 
+        drop_last=False
+    ):
+        rank=dist.get_rank()
+        num_replicas=dist.get_world_size()
+        
+        super(HiggsfieldSampler, self).__init__(
+            dataset=dataset, 
+            num_replicas=num_replicas,
+            rank=rank, 
+            shuffle=shuffle,
+            seed=seed, 
+            drop_last=drop_last,
+        )
+
+class MistralLoader(DataLoader):
+    def __init__(
+        self,
+        dataset, 
+        tokenizer=None,
+        max_sequence_length=2048,
+        batch_size_per_gpu=1,
+        shuffle=True, 
+        seed=0,
+        num_workers=0, 
+        pin_memory=False, 
+        drop_last=False,
+        timeout=0, 
+        worker_init_fn=None,
+        multiprocessing_context=None, 
+        *, 
+        prefetch_factor=None,
+        persistent_workers=False,
+        pin_memory_device=""
+    ):
+        
+        if not tokenizer:
+            tokenizer = get_tokenizer("mistralai/Mistral-7B-v0.1", max_sequence_length)
+    
+        dataset = TorchCompletionDataset(
+            dataset,
+            tokenizer,
+            max_sequence_length,
+        )
+        
+        sampler = HiggsfieldSampler(dataset, shuffle=shuffle, seed=seed,)
+        
+        super(MistralLoader, self).__init__(
+            dataset, 
+            batch_size=batch_size_per_gpu,
+            sampler=sampler,
+            num_workers=num_workers,
+            pin_memory=pin_memory, 
+            drop_last=drop_last,
+            timeout=timeout, 
+            worker_init_fn=worker_init_fn,
+            multiprocessing_context=multiprocessing_context, 
+            prefetch_factor=prefetch_factor,
+            persistent_workers=persistent_workers,
+            pin_memory_device=pin_memory_device 
+        )
+ 
diff --git a/higgsfield/mistral/mistral_utils.py b/higgsfield/mistral/mistral_utils.py
@@ -0,0 +1,21 @@
+import torch
+from transformers import (
+    MistralConfig,
+    MistralForCausalLM,
+)
+from higgsfield.checkpoint import fsdp_model_state_dict_rank0
+
+def load_mistral_from_config(model_name, num_embeddings=None):
+    config = MistralConfig.from_pretrained(model_name)
+    model = MistralForCausalLM(config)
+    
+    if num_embeddings:
+        model.resize_token_embeddings(num_embeddings)
+        
+    return model
+
+def load_mistral_from_checkpoint(model_name, checkpoint_path, num_embeddings=None):
+    model = load_mistral_from_config(model_name, num_embeddings=num_embeddings)
+    state_dict = torch.load(checkpoint_path)
+    model.load_state_dict(state_dict)
+    return model
