Enable dequant+matmul 8bit path for Intel CPU and XPU #1484
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Hi @Titus-von-Koeller @matthewdouglas . This feature enables dequant 8bit weight and using float matmul. It speed-up the lora finetune for 3x on XPU and 2x on CPU by the lora finetune script on llama3-8b by the command
python olora_finetuning.py --base_model alokabhishek/Meta-Llama-3-8B-Instruct-bnb-8bit --init_lora_weights gaussian --seed 42 --torch_dtype bfloat16 --device_map cpu.All tests in transformers have been passed, please review this PR. Thanks!