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Allow for GroupedQueryAttention #12

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Allow for GroupedQueryAttention #12

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33 changes: 25 additions & 8 deletions auto_circuit/model_utils/transformer_lens_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -82,32 +82,49 @@ def factorized_dest_nodes(
nodes = set()
for block_idx in range(model.cfg.n_layers):
layer = next(layers)
for head_idx in range(model.cfg.n_heads):
if separate_qkv:
for letter in ["Q", "K", "V"]:
n_query_heads = model.cfg.n_heads
n_key_value_heads = getattr(model.cfg, "n_key_value_heads", n_query_heads)

if separate_qkv:
for q_head_idx in range(n_query_heads):
nodes.add(
DestNode(
name=f"A{block_idx}.{q_head_idx}.Q",
module_name=f"blocks.{block_idx}.hook_q_input",
layer=layer,
head_dim=2,
head_idx=q_head_idx,
weight=f"blocks.{block_idx}.attn.W_Q",
weight_head_dim=0,
)
)
for kv_head_idx in range(n_key_value_heads):
for letter in ["K", "V"]:
nodes.add(
DestNode(
name=f"A{block_idx}.{head_idx}.{letter}",
name=f"A{block_idx}.{kv_head_idx}.{letter}",
module_name=f"blocks.{block_idx}.hook_{letter.lower()}_input",
layer=layer,
head_dim=2,
head_idx=head_idx,
head_idx=kv_head_idx,
weight=f"blocks.{block_idx}.attn.W_{letter}",
weight_head_dim=0,
)
)
else:
else:
for q_head_idx in range(n_query_heads):
nodes.add(
DestNode(
name=f"A{block_idx}.{head_idx}",
name=f"A{block_idx}.{q_head_idx}",
module_name=f"blocks.{block_idx}.hook_attn_in",
layer=layer,
head_dim=2,
head_idx=head_idx,
head_idx=q_head_idx,
weight=f"blocks.{block_idx}.attn.W_QKV",
weight_head_dim=0,
)
)

if not model.cfg.attn_only:
nodes.add(
DestNode(
Expand Down