Files
axolotl/tests/utils/test_models.py
2024-10-25 09:06:56 -04:00

119 lines
4.3 KiB
Python

"""Module for testing models utils file."""
from unittest.mock import MagicMock, patch
import pytest
from transformers import BitsAndBytesConfig, PreTrainedTokenizerBase
from transformers.integrations.deepspeed import is_deepspeed_zero3_enabled
from transformers.utils.import_utils import is_torch_mps_available
from axolotl.utils.dict import DictDefault
from axolotl.utils.models import ModelLoader, load_model
class TestModelsUtils:
"""Testing module for models utils."""
def setup_method(self) -> None:
# load config
self.cfg = DictDefault( # pylint: disable=attribute-defined-outside-init
{
"base_model": "JackFram/llama-68m",
"model_type": "LlamaForCausalLM",
"tokenizer_type": "LlamaTokenizer",
"load_in_8bit": True,
"load_in_4bit": False,
"adapter": "lora",
"flash_attention": False,
"sample_packing": True,
"device_map": "auto",
}
)
self.tokenizer = MagicMock( # pylint: disable=attribute-defined-outside-init
spec=PreTrainedTokenizerBase
)
self.inference = False # pylint: disable=attribute-defined-outside-init
self.reference_model = True # pylint: disable=attribute-defined-outside-init
# init ModelLoader
self.model_loader = ( # pylint: disable=attribute-defined-outside-init
ModelLoader(
cfg=self.cfg,
tokenizer=self.tokenizer,
inference=self.inference,
reference_model=self.reference_model,
)
)
def test_set_device_map_config(self):
# check device_map
device_map = self.cfg.device_map
if is_torch_mps_available():
device_map = "mps"
self.model_loader.set_device_map_config()
if is_deepspeed_zero3_enabled():
assert "device_map" not in self.model_loader.model_kwargs
else:
assert device_map in self.model_loader.model_kwargs["device_map"]
# check torch_dtype
assert self.cfg.torch_dtype == self.model_loader.model_kwargs["torch_dtype"]
def test_cfg_throws_error_with_s2_attention_and_sample_packing(self):
cfg = DictDefault(
{
"s2_attention": True,
"sample_packing": True,
"base_model": "",
"model_type": "LlamaForCausalLM",
}
)
# Mock out call to HF hub
with patch(
"axolotl.utils.models.load_model_config"
) as mocked_load_model_config:
mocked_load_model_config.return_value = {}
with pytest.raises(ValueError) as exc:
# Should error before hitting tokenizer, so we pass in an empty str
load_model(cfg, tokenizer="")
assert (
"shifted-sparse attention does not currently support sample packing"
in str(exc.value)
)
@pytest.mark.parametrize("adapter", ["lora", "qlora", None])
@pytest.mark.parametrize("load_in_8bit", [True, False])
@pytest.mark.parametrize("load_in_4bit", [True, False])
@pytest.mark.parametrize("gptq", [True, False])
def test_set_quantization_config(
self,
adapter,
load_in_8bit,
load_in_4bit,
gptq,
):
# init cfg as args
self.cfg.load_in_8bit = load_in_8bit
self.cfg.load_in_4bit = load_in_4bit
self.cfg.gptq = gptq
self.cfg.adapter = adapter
self.model_loader.set_quantization_config()
if "quantization_config" in self.model_loader.model_kwargs or self.cfg.gptq:
assert not (
hasattr(self.model_loader.model_kwargs, "load_in_8bit")
and hasattr(self.model_loader.model_kwargs, "load_in_4bit")
)
elif load_in_8bit and self.cfg.adapter is not None:
assert self.model_loader.model_kwargs["load_in_8bit"]
elif load_in_4bit and self.cfg.adapter is not None:
assert self.model_loader.model_kwargs["load_in_4bit"]
if (self.cfg.adapter == "qlora" and load_in_4bit) or (
self.cfg.adapter == "lora" and load_in_8bit
):
assert self.model_loader.model_kwargs.get(
"quantization_config", BitsAndBytesConfig
)