66 lines
1.9 KiB
Python
66 lines
1.9 KiB
Python
"""multipack patching for v2 of sample packing"""
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import importlib
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import transformers
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from accelerate import init_empty_weights
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from transformers import AutoConfig, AutoModelForCausalLM
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from transformers.integrations import is_deepspeed_zero3_enabled
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from axolotl.monkeypatch.mixtral import patch_mixtral_moe_forward_zero3
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from axolotl.monkeypatch.utils import get_unpad_data
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SUPPORTED_MULTIPACK_MODEL_TYPES = [
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"mllama_text_model",
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"llama",
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"llama4",
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"mistral",
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"mixtral",
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"qwen2",
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"qwen2_moe",
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"qwen3",
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"qwen3_moe",
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"falcon",
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"phi",
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"phi3",
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"gemma",
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"gemma2",
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"gemma3",
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"gemma3_text",
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"cohere",
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"cohere2",
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"gemmoe",
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"starcoder2",
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"deepseek_v2",
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"deepseek_v3",
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"glm",
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"glm4",
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]
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def patch_for_multipack(model_type, model_name=None, has_remote_code=False):
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if has_remote_code:
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patch_remote(model_name)
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elif hasattr(transformers, "modeling_flash_attention_utils"):
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transformers.modeling_flash_attention_utils._get_unpad_data = ( # pylint: disable=protected-access
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get_unpad_data
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)
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if model_type == "mixtral" and is_deepspeed_zero3_enabled():
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patch_mixtral_moe_forward_zero3()
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def patch_remote(model_name):
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model_config = AutoConfig.from_pretrained(model_name, trust_remote_code=True)
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# we need to load the model here in order for modeling_* to be available
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with init_empty_weights():
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AutoModelForCausalLM.from_pretrained(model_name, trust_remote_code=True)
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parts = model_config.__class__.__module__.split(".")
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parts[-1] = parts[-1].replace("configuration_", "modeling_", 1)
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module_name = ".".join(parts)
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modeling_arch = importlib.import_module(module_name)
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if hasattr(modeling_arch, "_get_unpad_data"):
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modeling_arch._get_unpad_data = ( # pylint: disable=protected-access
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get_unpad_data
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)
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