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Former-commit-id: 0da6ec2d516326fe9c7583ba71cd1778eb838178
This commit is contained in:
hiyouga
2024-04-02 20:07:43 +08:00
parent 117b67ea30
commit b12176d818
24 changed files with 244 additions and 890 deletions
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101
src/llmtuner/model/patcher.py
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@@ -17,8 +17,7 @@ from ..extras.logging import get_logger
from ..extras.misc import get_current_device, infer_optim_dtype
from ..extras.packages import is_flash_attn2_available
from ..extras.patches.llama_patch import apply_llama_patch
from ..extras.patches.mixtral_patch import patch_mixtral_replace_moe_impl
from .utils import QuantizationMethod
from .utils import QuantizationMethod, add_z3_leaf_module
if TYPE_CHECKING:
@@ -32,47 +31,6 @@ logger = get_logger(__name__)
SUPPORTED_CLASS_FOR_S2ATTN = ["llama"]
def _noisy_mean_initialization(embed_weight: torch.Tensor, num_new_tokens: int):
embedding_dim = embed_weight.size(1)
avg_weight = embed_weight[:-num_new_tokens].mean(dim=0, keepdim=True)
noise_weight = torch.empty_like(embed_weight[-num_new_tokens:])
noise_weight.normal_(mean=0, std=(1.0 / math.sqrt(embedding_dim)))
embed_weight[-num_new_tokens:] = avg_weight + noise_weight
def _resize_embedding_layer(model: "PreTrainedModel", tokenizer: "PreTrainedTokenizer") -> None:
r"""
Resize token embeddings.
"""
if is_deepspeed_zero3_enabled():
import deepspeed # type: ignore
params = [model.get_input_embeddings().weight]
if model.get_output_embeddings() is not None and not model.config.tie_word_embeddings:
params.append(model.get_output_embeddings().weight)
context_maybe_zero3 = deepspeed.zero.GatheredParameters(params, modifier_rank=0)
else:
context_maybe_zero3 = nullcontext()
with context_maybe_zero3:
current_embedding_size = model.get_input_embeddings().weight.size(0)
if len(tokenizer) > current_embedding_size:
if not isinstance(model.get_output_embeddings(), torch.nn.Linear):
logger.warning("Current model does not support resizing token embeddings.")
return
model.resize_token_embeddings(len(tokenizer), pad_to_multiple_of=64)
with context_maybe_zero3:
new_embedding_size = model.get_input_embeddings().weight.size(0)
num_new_tokens = new_embedding_size - current_embedding_size
_noisy_mean_initialization(model.get_input_embeddings().weight.data, num_new_tokens)
_noisy_mean_initialization(model.get_output_embeddings().weight.data, num_new_tokens)
logger.info("Resized token embeddings from {} to {}.".format(current_embedding_size, new_embedding_size))
def _get_quantization_dataset(tokenizer: "PreTrainedTokenizer", model_args: "ModelArguments") -> List[str]:
r"""
Inspired by: https://github.com/huggingface/optimum/blob/v1.16.0/optimum/gptq/data.py#L133
@@ -180,8 +138,12 @@ def _configure_quantization(
quant_method = quantization_config.get("quant_method", "")
if quant_method == QuantizationMethod.GPTQ:
require_version("auto_gptq>=0.5.0", "To fix: pip install auto_gptq>=0.5.0")
quantization_config["use_exllama"] = False # disable exllama
if quant_method == QuantizationMethod.AWQ:
require_version("autoawq", "To fix: pip install autoawq")
if quant_method == QuantizationMethod.AQLM:
require_version("transformers>=4.39.0", "To fix: pip install transformers>=4.39.0")
require_version("aqlm>=1.1.0", "To fix: pip install aqlm[gpu]>=1.1.0")
@@ -235,6 +197,47 @@ def _configure_quantization(
logger.info("Quantizing model to {} bit.".format(model_args.quantization_bit))
def _noisy_mean_initialization(embed_weight: torch.Tensor, num_new_tokens: int):
embedding_dim = embed_weight.size(1)
avg_weight = embed_weight[:-num_new_tokens].mean(dim=0, keepdim=True)
noise_weight = torch.empty_like(embed_weight[-num_new_tokens:])
noise_weight.normal_(mean=0, std=(1.0 / math.sqrt(embedding_dim)))
embed_weight[-num_new_tokens:] = avg_weight + noise_weight
def _resize_embedding_layer(model: "PreTrainedModel", tokenizer: "PreTrainedTokenizer") -> None:
r"""
Resize token embeddings.
"""
if is_deepspeed_zero3_enabled():
import deepspeed # type: ignore
params = [model.get_input_embeddings().weight]
if model.get_output_embeddings() is not None and not model.config.tie_word_embeddings:
params.append(model.get_output_embeddings().weight)
context_maybe_zero3 = deepspeed.zero.GatheredParameters(params, modifier_rank=0)
else:
context_maybe_zero3 = nullcontext()
with context_maybe_zero3:
current_embedding_size = model.get_input_embeddings().weight.size(0)
if len(tokenizer) > current_embedding_size:
if not isinstance(model.get_output_embeddings(), torch.nn.Linear):
logger.warning("Current model does not support resizing token embeddings.")
return
model.resize_token_embeddings(len(tokenizer), pad_to_multiple_of=64)
with context_maybe_zero3:
new_embedding_size = model.get_input_embeddings().weight.size(0)
num_new_tokens = new_embedding_size - current_embedding_size
_noisy_mean_initialization(model.get_input_embeddings().weight.data, num_new_tokens)
_noisy_mean_initialization(model.get_output_embeddings().weight.data, num_new_tokens)
logger.info("Resized token embeddings from {} to {}.".format(current_embedding_size, new_embedding_size))
def _fp32_forward_post_hook(
module: "torch.nn.Module", args: Tuple["torch.Tensor"], output: "torch.Tensor"
) -> "torch.Tensor":
@@ -348,15 +351,15 @@ def patch_model(
if is_trainable:
_prepare_model_for_training(model, model_args)
if getattr(model.config, "model_type", None) == "mixtral" and is_deepspeed_zero3_enabled():
require_version("deepspeed>=0.13.0", "To fix: pip install deepspeed>=0.13.0")
from deepspeed.utils import set_z3_leaf_modules # type: ignore
if getattr(model.config, "model_type", None) == "mixtral":
from transformers.models.mixtral.modeling_mixtral import MixtralSparseMoeBlock
set_z3_leaf_modules(model, [MixtralSparseMoeBlock])
add_z3_leaf_module(model, MixtralSparseMoeBlock)
if is_trainable:
patch_mixtral_replace_moe_impl()
if getattr(model.config, "model_type", None) == "qwen2moe":
from transformers.models.qwen2_moe.modeling_qwen2_moe import Qwen2MoeSparseMoeBlock
add_z3_leaf_module(model, Qwen2MoeSparseMoeBlock)
try:
model.add_model_tags(["llama-factory"])