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import glob
import re
import shutil
import sys
import accelerate
import torch
from configuration_afmoe_scm import AfmoeSCMConfig
from modeling_afmoe_scm import AfmoeSCMForCausalLM
from configuration_afmoe import AfmoeConfig
from safetensors import safe_open
input_model = sys.argv[1]
output_model_path = sys.argv[2]
auto_map = {
"AutoConfig": "configuration_afmoe_scm.AfmoeSCMConfig",
"AutoModel": "modeling_afmoe_scm.AfmoeSCMModel",
"AutoModelForCausalLM": "modeling_afmoe_scm.AfmoeSCMForCausalLM"
}
cfg_standard_moe = AfmoeConfig.from_pretrained(input_model)
cfg_shared_moe = AfmoeSCMConfig(
auto_map=auto_map,
layer_types=cfg_standard_moe.layer_types,
global_attn_every_n_layers=cfg_standard_moe.global_attn_every_n_layers,
load_balance_coeff=cfg_standard_moe.load_balance_coeff,
mup_enabled=cfg_standard_moe.mup_enabled,
num_dense_layers=cfg_standard_moe.num_dense_layers,
num_expert_groups=cfg_standard_moe.num_expert_groups,
num_limited_groups=cfg_standard_moe.num_limited_groups,
route_norm=cfg_standard_moe.route_norm,
route_scale=cfg_standard_moe.route_scale,
score_func=cfg_standard_moe.score_func,
topk_group=cfg_standard_moe.topk_group,
num_shared_experts=cfg_standard_moe.num_shared_experts,
vocab_size=cfg_standard_moe.vocab_size,
hidden_size=cfg_standard_moe.hidden_size,
intermediate_size=cfg_standard_moe.intermediate_size,
num_hidden_layers=cfg_standard_moe.num_hidden_layers,
num_attention_heads=cfg_standard_moe.num_attention_heads,
num_key_value_heads=cfg_standard_moe.num_key_value_heads,
hidden_act=cfg_standard_moe.hidden_act,
max_position_embeddings=cfg_standard_moe.max_position_embeddings,
initializer_range=cfg_standard_moe.initializer_range,
rms_norm_eps=cfg_standard_moe.rms_norm_eps,
use_cache=cfg_standard_moe.use_cache,
tie_word_embeddings=cfg_standard_moe.tie_word_embeddings,
rope_theta=cfg_standard_moe.rope_theta,
rope_scaling=cfg_standard_moe.rope_scaling,
sliding_window=cfg_standard_moe.sliding_window,
attention_dropout=cfg_standard_moe.attention_dropout,
moe_intermediate_size=cfg_standard_moe.moe_intermediate_size,
num_experts_per_tok=cfg_standard_moe.num_experts_per_tok,
num_experts=cfg_standard_moe.num_experts,
head_dim=cfg_standard_moe.head_dim,
eos_token_id=cfg_standard_moe.eos_token_id,
pad_token_id=cfg_standard_moe.pad_token_id,
torch_dtype=cfg_standard_moe.torch_dtype,
)
num_experts = cfg_standard_moe.num_experts
with accelerate.init_empty_weights():
model_shared_moe = AfmoeSCMForCausalLM(cfg_shared_moe)
model_shared_moe = model_shared_moe.to(torch.bfloat16)
new_state_dict = {}
pattern = f"{input_model}/model-*-of-*.safetensors"
files = sorted(glob.glob(pattern))
if len(files) == 0:
raise FileNotFoundError
tensors = {}
for file_path in files:
print(f"processing {file_path}")
with safe_open(file_path, framework="pt", device="cpu") as f:
for key in f.keys():
tensor = f.get_tensor(key)
tensors[key] = tensor
for key in tensors:
if "experts" not in key or "shared_experts" in key:
new_state_dict[key] = tensors[key]
elif "experts.0" in key:
layer_num = int(re.search(r"\d+", key).group())
new_state_dict[
f"model.layers.{layer_num}.mlp.moe_mlp.output_experts.weight"
] = torch.stack(
[
tensors[f"model.layers.{layer_num}.mlp.experts.{i}.down_proj.weight"]
for i in range(num_experts)
]
)
new_state_dict[f"model.layers.{layer_num}.mlp.moe_mlp.experts.weight"] = (
torch.stack(
[
torch.cat(
[
tensors[
f"model.layers.{layer_num}.mlp.experts.{i}.up_proj.weight"
],
tensors[
f"model.layers.{layer_num}.mlp.experts.{i}.gate_proj.weight"
],
],
dim=0,
)
for i in range(num_experts)
]
)
)
model_shared_moe.load_state_dict(new_state_dict, strict=True, assign=True)
model_shared_moe.save_pretrained(output_model_path)
cfg_shared_moe.save_pretrained(output_model_path)
shutil.copy(
"modeling_afmoe_scm.py",
output_model_path + "/" + "modeling_afmoe_scm.py",
)
shutil.copy(
"configuration_afmoe_scm.py",
output_model_path + "/" + "configuration_afmoe_scm.py",
)
for i in ["special_tokens_map.json", "tokenizer_config.json", "tokenizer.json", "chat_template.jinja"]:
shutil.copy(input_model + "/" + i, output_model_path + "/" + i)
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