Merge pull request #190 from stanfordnlp/gemma2

[P2] Add Gemma 2 model

Author: explanare

pyvene/models/gemma2/__init__.py

@@ -0,0 +1,89 @@
+"""
+Each modeling file in this library is a mapping between
+abstract naming of intervention anchor points and actual
+model module defined in the huggingface library.
+
+We also want to let the intervention library know how to
+config the dimensions of intervention based on model config
+defined in the huggingface library.
+"""
+
+
+import torch
+from ..constants import *
+
+
+gemma2_type_to_module_mapping = {
+    "block_input": ("layers[%s]", CONST_INPUT_HOOK),
+    "block_output": ("layers[%s]", CONST_OUTPUT_HOOK),
+    "mlp_activation": ("layers[%s].mlp.act_fn", CONST_OUTPUT_HOOK),
+    "mlp_output": ("layers[%s].mlp", CONST_OUTPUT_HOOK),
+    "mlp_input": ("layers[%s].mlp", CONST_INPUT_HOOK),
+    "attention_value_output": ("layers[%s].self_attn.o_proj", CONST_INPUT_HOOK),
+    "head_attention_value_output": ("layers[%s].self_attn.o_proj", CONST_INPUT_HOOK, (split_head_and_permute, "n_head")),
+    "attention_output": ("layers[%s].self_attn", CONST_OUTPUT_HOOK),
+    "attention_input": ("layers[%s].self_attn", CONST_INPUT_HOOK),
+    "query_output": ("layers[%s].self_attn.q_proj", CONST_OUTPUT_HOOK),
+    "key_output": ("layers[%s].self_attn.k_proj", CONST_OUTPUT_HOOK),
+    "value_output": ("layers[%s].self_attn.v_proj", CONST_OUTPUT_HOOK),
+    "head_query_output": ("layers[%s].self_attn.q_proj", CONST_OUTPUT_HOOK, (split_head_and_permute, "n_head")),
+    "head_key_output": ("layers[%s].self_attn.k_proj", CONST_OUTPUT_HOOK, (split_head_and_permute, "n_kv_head")),
+    "head_value_output": ("layers[%s].self_attn.v_proj", CONST_OUTPUT_HOOK, (split_head_and_permute, "n_kv_head")),
+}
+
+
+gemma2_type_to_dimension_mapping = {
+    "n_head": ("num_attention_heads",),
+    "n_kv_head": ("num_key_value_heads",),
+    "block_input": ("hidden_size",),
+    "block_output": ("hidden_size",),
+    "mlp_activation": ("intermediate_size",),
+    "mlp_output": ("hidden_size",),
+    "mlp_input": ("hidden_size",),
+    "attention_value_output": ("hidden_size",),
+    "head_attention_value_output": ("head_dim",),
+    "attention_output": ("hidden_size",),
+    "attention_input": ("hidden_size",),
+    "query_output": ("hidden_size",),
+    "key_output": ("hidden_size",),
+    "value_output": ("hidden_size",),
+    "head_query_output": ("head_dim",),
+    "head_key_output": ("head_dim",),
+    "head_value_output": ("hhead_dim",),
+}
+
+
+"""gemma2 model with LM head"""
+gemma2_lm_type_to_module_mapping = {}
+for k, v in gemma2_type_to_module_mapping.items():
+    gemma2_lm_type_to_module_mapping[k] = (f"model.{v[0]}", ) + v[1:]
+
+
+gemma2_lm_type_to_dimension_mapping = gemma2_type_to_dimension_mapping
+
+
+"""gemma2 model with classifier head"""
+gemma2_classifier_type_to_module_mapping = {}
+for k, v in gemma2_type_to_module_mapping.items():
+    gemma2_classifier_type_to_module_mapping[k] = (f"model.{v[0]}", ) + v[1:]
+
+
+gemma2_classifier_type_to_dimension_mapping = gemma2_type_to_dimension_mapping
+
+
+def create_gemma2(
+    name="google/gemma2-2b", cache_dir=None, dtype=torch.bfloat16
+):
+    """Creates a Causal LM model, config, and tokenizer from the given name and revision"""
+    from transformers import AutoConfig, AutoModelForCausalLM, AutoTokenizer
+
+    config = AutoConfig.from_pretrained(name, cache_dir=cache_dir)
+    tokenizer = AutoTokenizer.from_pretrained(name, cache_dir=cache_dir)
+    gemma = AutoModelForCausalLM.from_pretrained(
+        name,
+        config=config,
+        cache_dir=cache_dir,
+        torch_dtype=dtype,
+    )
+    print("loaded model")
+    return config, tokenizer, gemma

pyvene/models/gemma2/modelings_intervenable_gemma2.py

@@ -2,6 +2,7 @@
 from .llama.modelings_intervenable_llama import *
 from .mistral.modellings_intervenable_mistral import *
 from .gemma.modelings_intervenable_gemma import *
+from .gemma2.modelings_intervenable_gemma2 import *
 from .gpt2.modelings_intervenable_gpt2 import *
 from .gpt_neo.modelings_intervenable_gpt_neo import *
 from .gpt_neox.modelings_intervenable_gpt_neox import *
@@ -58,6 +59,8 @@
     hf_models.gemma.modeling_gemma.GemmaModel: gemma_type_to_module_mapping,
     hf_models.gemma.modeling_gemma.GemmaForCausalLM: gemma_lm_type_to_module_mapping,
     hf_models.gemma.modeling_gemma.GemmaForSequenceClassification: gemma_classifier_type_to_module_mapping,
+    hf_models.gemma2.modeling_gemma2.Gemma2Model: gemma2_type_to_module_mapping,
+    hf_models.gemma2.modeling_gemma2.Gemma2ForCausalLM: gemma2_lm_type_to_module_mapping,
     hf_models.olmo.modeling_olmo.OlmoModel: olmo_type_to_module_mapping,
     hf_models.olmo.modeling_olmo.OlmoForCausalLM: olmo_lm_type_to_module_mapping,  
     hf_models.blip.modeling_blip.BlipForQuestionAnswering: blip_type_to_module_mapping,
@@ -91,6 +94,8 @@
     hf_models.gemma.modeling_gemma.GemmaModel: gemma_type_to_dimension_mapping,
     hf_models.gemma.modeling_gemma.GemmaForCausalLM: gemma_lm_type_to_dimension_mapping,
     hf_models.gemma.modeling_gemma.GemmaForSequenceClassification: gemma_classifier_type_to_dimension_mapping,
+    hf_models.gemma2.modeling_gemma2.Gemma2Model: gemma2_type_to_dimension_mapping,
+    hf_models.gemma2.modeling_gemma2.Gemma2ForCausalLM: gemma2_lm_type_to_dimension_mapping,
     hf_models.olmo.modeling_olmo.OlmoModel: olmo_type_to_dimension_mapping,
     hf_models.olmo.modeling_olmo.OlmoForCausalLM: olmo_lm_type_to_dimension_mapping, 
     hf_models.blip.modeling_blip.BlipForQuestionAnswering: blip_type_to_dimension_mapping,