Spaces:
Runtime error
Runtime error
File size: 11,249 Bytes
ed4d993 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 |
from __future__ import annotations
import importlib.util
import logging
from typing import Any, List, Mapping, Optional
from langchain_core._api.deprecation import deprecated
from langchain_core.callbacks import CallbackManagerForLLMRun
from langchain_core.language_models.llms import BaseLLM
from langchain_core.outputs import Generation, LLMResult
from langchain_core.pydantic_v1 import Extra
DEFAULT_MODEL_ID = "gpt2"
DEFAULT_TASK = "text-generation"
VALID_TASKS = (
"text2text-generation",
"text-generation",
"summarization",
"translation",
)
DEFAULT_BATCH_SIZE = 4
logger = logging.getLogger(__name__)
@deprecated(
since="0.0.37",
removal="0.3",
alternative_import="langchain_huggingface.HuggingFacePipeline",
)
class HuggingFacePipeline(BaseLLM):
"""HuggingFace Pipeline API.
To use, you should have the ``transformers`` python package installed.
Only supports `text-generation`, `text2text-generation`, `summarization` and
`translation` for now.
Example using from_model_id:
.. code-block:: python
from langchain_community.llms import HuggingFacePipeline
hf = HuggingFacePipeline.from_model_id(
model_id="gpt2",
task="text-generation",
pipeline_kwargs={"max_new_tokens": 10},
)
Example passing pipeline in directly:
.. code-block:: python
from langchain_community.llms import HuggingFacePipeline
from transformers import AutoModelForCausalLM, AutoTokenizer, pipeline
model_id = "gpt2"
tokenizer = AutoTokenizer.from_pretrained(model_id)
model = AutoModelForCausalLM.from_pretrained(model_id)
pipe = pipeline(
"text-generation", model=model, tokenizer=tokenizer, max_new_tokens=10
)
hf = HuggingFacePipeline(pipeline=pipe)
"""
pipeline: Any #: :meta private:
model_id: str = DEFAULT_MODEL_ID
"""Model name to use."""
model_kwargs: Optional[dict] = None
"""Keyword arguments passed to the model."""
pipeline_kwargs: Optional[dict] = None
"""Keyword arguments passed to the pipeline."""
batch_size: int = DEFAULT_BATCH_SIZE
"""Batch size to use when passing multiple documents to generate."""
class Config:
"""Configuration for this pydantic object."""
extra = Extra.forbid
@classmethod
def from_model_id(
cls,
model_id: str,
task: str,
backend: str = "default",
device: Optional[int] = -1,
device_map: Optional[str] = None,
model_kwargs: Optional[dict] = None,
pipeline_kwargs: Optional[dict] = None,
batch_size: int = DEFAULT_BATCH_SIZE,
**kwargs: Any,
) -> HuggingFacePipeline:
"""Construct the pipeline object from model_id and task."""
try:
from transformers import (
AutoModelForCausalLM,
AutoModelForSeq2SeqLM,
AutoTokenizer,
)
from transformers import pipeline as hf_pipeline
except ImportError:
raise ImportError(
"Could not import transformers python package. "
"Please install it with `pip install transformers`."
)
_model_kwargs = model_kwargs or {}
tokenizer = AutoTokenizer.from_pretrained(model_id, **_model_kwargs)
try:
if task == "text-generation":
if backend == "openvino":
try:
from optimum.intel.openvino import OVModelForCausalLM
except ImportError:
raise ImportError(
"Could not import optimum-intel python package. "
"Please install it with: "
"pip install 'optimum[openvino,nncf]' "
)
try:
# use local model
model = OVModelForCausalLM.from_pretrained(
model_id, **_model_kwargs
)
except Exception:
# use remote model
model = OVModelForCausalLM.from_pretrained(
model_id, export=True, **_model_kwargs
)
else:
model = AutoModelForCausalLM.from_pretrained(
model_id, **_model_kwargs
)
elif task in ("text2text-generation", "summarization", "translation"):
if backend == "openvino":
try:
from optimum.intel.openvino import OVModelForSeq2SeqLM
except ImportError:
raise ImportError(
"Could not import optimum-intel python package. "
"Please install it with: "
"pip install 'optimum[openvino,nncf]' "
)
try:
# use local model
model = OVModelForSeq2SeqLM.from_pretrained(
model_id, **_model_kwargs
)
except Exception:
# use remote model
model = OVModelForSeq2SeqLM.from_pretrained(
model_id, export=True, **_model_kwargs
)
else:
model = AutoModelForSeq2SeqLM.from_pretrained(
model_id, **_model_kwargs
)
else:
raise ValueError(
f"Got invalid task {task}, "
f"currently only {VALID_TASKS} are supported"
)
except ImportError as e:
raise ImportError(
f"Could not load the {task} model due to missing dependencies."
) from e
if tokenizer.pad_token is None:
tokenizer.pad_token_id = model.config.eos_token_id
if (
(
getattr(model, "is_loaded_in_4bit", False)
or getattr(model, "is_loaded_in_8bit", False)
)
and device is not None
and backend == "default"
):
logger.warning(
f"Setting the `device` argument to None from {device} to avoid "
"the error caused by attempting to move the model that was already "
"loaded on the GPU using the Accelerate module to the same or "
"another device."
)
device = None
if (
device is not None
and importlib.util.find_spec("torch") is not None
and backend == "default"
):
import torch
cuda_device_count = torch.cuda.device_count()
if device < -1 or (device >= cuda_device_count):
raise ValueError(
f"Got device=={device}, "
f"device is required to be within [-1, {cuda_device_count})"
)
if device_map is not None and device < 0:
device = None
if device is not None and device < 0 and cuda_device_count > 0:
logger.warning(
"Device has %d GPUs available. "
"Provide device={deviceId} to `from_model_id` to use available"
"GPUs for execution. deviceId is -1 (default) for CPU and "
"can be a positive integer associated with CUDA device id.",
cuda_device_count,
)
if device is not None and device_map is not None and backend == "openvino":
logger.warning("Please set device for OpenVINO through: `model_kwargs`")
if "trust_remote_code" in _model_kwargs:
_model_kwargs = {
k: v for k, v in _model_kwargs.items() if k != "trust_remote_code"
}
_pipeline_kwargs = pipeline_kwargs or {}
pipeline = hf_pipeline(
task=task,
model=model,
tokenizer=tokenizer,
device=device,
device_map=device_map,
batch_size=batch_size,
model_kwargs=_model_kwargs,
**_pipeline_kwargs,
)
if pipeline.task not in VALID_TASKS:
raise ValueError(
f"Got invalid task {pipeline.task}, "
f"currently only {VALID_TASKS} are supported"
)
return cls(
pipeline=pipeline,
model_id=model_id,
model_kwargs=_model_kwargs,
pipeline_kwargs=_pipeline_kwargs,
batch_size=batch_size,
**kwargs,
)
@property
def _identifying_params(self) -> Mapping[str, Any]:
"""Get the identifying parameters."""
return {
"model_id": self.model_id,
"model_kwargs": self.model_kwargs,
"pipeline_kwargs": self.pipeline_kwargs,
}
@property
def _llm_type(self) -> str:
return "huggingface_pipeline"
def _generate(
self,
prompts: List[str],
stop: Optional[List[str]] = None,
run_manager: Optional[CallbackManagerForLLMRun] = None,
**kwargs: Any,
) -> LLMResult:
# List to hold all results
text_generations: List[str] = []
pipeline_kwargs = kwargs.get("pipeline_kwargs", {})
skip_prompt = kwargs.get("skip_prompt", False)
for i in range(0, len(prompts), self.batch_size):
batch_prompts = prompts[i : i + self.batch_size]
# Process batch of prompts
responses = self.pipeline(
batch_prompts,
**pipeline_kwargs,
)
# Process each response in the batch
for j, response in enumerate(responses):
if isinstance(response, list):
# if model returns multiple generations, pick the top one
response = response[0]
if self.pipeline.task == "text-generation":
text = response["generated_text"]
elif self.pipeline.task == "text2text-generation":
text = response["generated_text"]
elif self.pipeline.task == "summarization":
text = response["summary_text"]
elif self.pipeline.task in "translation":
text = response["translation_text"]
else:
raise ValueError(
f"Got invalid task {self.pipeline.task}, "
f"currently only {VALID_TASKS} are supported"
)
if skip_prompt:
text = text[len(batch_prompts[j]) :]
# Append the processed text to results
text_generations.append(text)
return LLMResult(
generations=[[Generation(text=text)] for text in text_generations]
)
|