| # coding=utf-8 | |
| # Copyright 2023-present the HuggingFace Inc. team. | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| import importlib | |
| def is_bnb_available(): | |
| return importlib.util.find_spec("bitsandbytes") is not None | |
| def is_bnb_4bit_available(): | |
| if not is_bnb_available(): | |
| return False | |
| import bitsandbytes as bnb | |
| return hasattr(bnb.nn, "Linear4bit") | |