forked from fauxpilot/fauxpilot
-
Notifications
You must be signed in to change notification settings - Fork 0
/
huggingface_opt_convert.py
424 lines (356 loc) · 18.2 KB
/
huggingface_opt_convert.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
# Copyright (c) 2021-2022, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
'''
Convert huggingface Meta OPT model. Use https://huggingface.co/facebook/opt-125m as demo.
'''
import argparse
import configparser
import multiprocessing
import numpy as np
import os
import sys
import torch
from datetime import datetime
from pathlib import Path
from tqdm import tqdm
from transformers import OPTForCausalLM, AutoModelForCausalLM, AutoTokenizer # transformers-4.20.0.dev0
from transformers.models.opt.modeling_opt import OPTAttention, OPTDecoderLayer
dir_path = os.path.dirname(os.path.realpath(__file__))
sys.path.append(dir_path + "/../../../..")
sys.path.append(dir_path)
class Evaluator:
def __init__(self, dataset, tokenizer, device):
self.dataset = dataset
self.tokenizer = tokenizer
self.device = device
# tokenize the dataset
def tokenize_function(examples):
example = self.tokenizer(examples['text'])
return example
self.dataset = self.dataset.map(tokenize_function, batched=True)
self.dataset.set_format(type='torch', columns=['input_ids'])
@torch.no_grad()
def evaluate(self, model):
model.eval()
# The task is to predict the last word of the input.
total, hit = 0, 0
for batch in tqdm(self.dataset):
input_ids = batch['input_ids'].to(self.device).unsqueeze(0)
label = input_ids[:, -1]
outputs = model(input_ids)
last_token_logits = outputs.logits[:, -2, :]
pred = last_token_logits.argmax(dim=-1)
total += label.size(0)
hit += (pred == label).sum().item()
acc = hit / total
return acc
class RangeDetector(torch.nn.Module):
def __init__(self, layer, name, save_dict):
super().__init__()
self.layer = layer
self.name = f"model.{name}.weight"
self.save_dict = save_dict
@torch.no_grad()
def forward(self, x):
matmul = x @ self.layer.weight.T
act_pre_max = x.abs().max()
act_post_max = matmul.abs().max()
if self.name in self.save_dict:
act_pre_max = torch.max(act_pre_max, self.save_dict[self.name][0])
act_post_max = torch.max(act_post_max, self.save_dict[self.name][1])
self.save_dict[self.name] = (act_pre_max, act_post_max)
return matmul + self.layer.bias
def inject_range_detectors(model):
capture_dict = {}
for name, m in model.model.named_modules():
if isinstance(m, OPTDecoderLayer):
m.fc1 = RangeDetector(m.fc1, f"{name}.fc1", capture_dict)
m.fc2 = RangeDetector(m.fc2, f"{name}.fc2", capture_dict)
elif isinstance(m, OPTAttention):
m.q_proj = RangeDetector(m.q_proj, f"{name}.q_proj", capture_dict)
m.k_proj = RangeDetector(m.k_proj, f"{name}.k_proj", capture_dict)
m.v_proj = RangeDetector(m.v_proj, f"{name}.v_proj", capture_dict)
m.out_proj = RangeDetector(m.out_proj, f"{name}.out_proj", capture_dict)
return capture_dict
def remove_range_detectors(model):
for name, m in model.model.named_modules():
if isinstance(m, OPTDecoderLayer):
m.fc1 = m.fc1.layer
m.fc2 = m.fc2.layer
elif isinstance(m, OPTAttention):
m.q_proj = m.q_proj.layer
m.k_proj = m.k_proj.layer
m.v_proj = m.v_proj.layer
m.out_proj = m.out_proj.layer
def get_weight_data_type(data_type):
if data_type == "fp32":
return np.float32
elif data_type == "fp16":
return np.float16
else:
assert False, f"Invalid weight data type {data_type}"
def quantize(mat, act_range):
if mat.ndim == 3 and mat.shape[1] == 3:
mat_max = np.abs(mat).clip(1e-8, None).max(axis=(0,2))[None, :, None]
else:
mat_max = np.abs(mat).clip(1e-8, None).max()
act_scale_in = 127. / act_range[0].cpu().numpy()
weight_scales = 127. / mat_max
act_scale_post = 127. / act_range[1].cpu().numpy()
mat_quant = (mat * weight_scales).round().astype(np.int8)
return mat_quant, weight_scales, act_scale_in, act_scale_post
def split_and_convert_process(i, saved_dir, factor, key, args, val, capture_dict, old_name, dtype):
def save_val(val, key, tp_num=None):
path = saved_dir + "/model." + key
if tp_num is not None:
path += "." + str(tp_num)
path += ".bin"
val.tofile(path)
quantized_out = args.quantize or args.act_scale is not None
if "input_layernorm.weight" in key or "input_layernorm.bias" in key or \
"attention.dense.bias" in key or "post_attention_layernorm.weight" in key or \
"post_attention_layernorm.bias" in key or "mlp.dense_4h_to_h.bias" in key or \
"final_layernorm.weight" in key or "final_layernorm.bias" in key:
# shared weights, only need to convert the weights of rank 0
if i == 0:
save_val(val, key)
elif "attention.dense.weight" in key or "mlp.dense_4h_to_h.weight" in key:
if quantized_out:
val_q, weight_scales, act_scale_pre, act_scale_post = quantize(val, capture_dict[old_name])
save_val(act_scale_pre.astype(dtype), key.replace("weight", "scale"))
scale_inter = (act_scale_post / (act_scale_pre * weight_scales)).astype(dtype)
save_val(scale_inter, key.replace("weight", "scale_inter"))
save_val((1. / act_scale_post).astype(dtype), key.replace("weight", "scale_out"))
split_vals_q = np.split(val_q, factor, axis=0)
for j in range(factor):
save_val(split_vals_q[j], key + ".int8", i * factor + j)
split_vals = np.split(val, factor, axis=0)
for j in range(factor):
save_val(split_vals[j], key, i * factor + j)
elif "mlp.dense_h_to_4h.weight" in key or "mlp.dense_h_to_4h.bias" in key:
if quantized_out and "weight" in key:
val_q, weight_scales, act_scale_pre, act_scale_post = quantize(val, capture_dict[old_name])
save_val(act_scale_pre.astype(dtype), key.replace("weight", "scale"))
scale_inter = (act_scale_post / (act_scale_pre * weight_scales)).astype(dtype)
save_val(scale_inter, key.replace("weight", "scale_inter"))
save_val((1. / act_scale_post).astype(dtype), key.replace("weight", "scale_out"))
split_vals_q = np.split(val_q, factor, axis=-1)
for j in range(factor):
save_val(split_vals_q[j], key + ".int8", i * factor + j)
split_vals = np.split(val, factor, axis=-1)
for j in range(factor):
save_val(split_vals[j], key, i * factor + j)
elif "attention.query_key_value.bias" in key:
local_dim = (int)(val.shape[-1] / 3)
val = val.reshape(3, local_dim)
split_vals = np.split(val, factor, axis=-1)
for j in range(factor):
save_val(split_vals[j], key, i * factor + j)
elif "attention.query_key_value.weight" in key:
hidden_dim = val.shape[0]
local_dim = (int)(val.shape[-1] / 3)
val = val.reshape(hidden_dim, 3, local_dim)
if quantized_out:
val_q, weight_scales, act_scale_pre, act_scale_post = quantize(val, capture_dict[old_name])
weight_scales = weight_scales[0] * np.ones((3, local_dim // factor))
save_val(act_scale_pre.astype(dtype), key.replace("weight", "scale"))
scale_inter = (act_scale_post[:, None] / (act_scale_pre[:, None] * weight_scales)).astype(dtype)
save_val(scale_inter, key.replace("weight", "scale_inter"))
save_val((1. / act_scale_post).astype(dtype), key.replace("weight", "scale_out"))
split_vals_q = np.split(val_q, factor, axis=-1)
for j in range(factor):
save_val(split_vals_q[j], key + ".int8", i * factor + j)
split_vals = np.split(val, factor, axis=-1)
for j in range(factor):
save_val(split_vals[j], key, i * factor + j)
else:
print("[ERROR] cannot find key '{}'".format(key))
def fuse_qkv_weight(q, k, v):
if q.dim() == 0:
qkv = torch.tensor((q.item(), k.item(), v.item()))
else:
qkv = torch.cat([q, k, v], dim=-1)
return qkv
def split_and_convert(args):
saved_dir = args.saved_dir + "/%d-gpu/" % args.infer_gpu_num
if(os.path.exists(saved_dir) == False):
os.makedirs(saved_dir)
ckpt_name = args.in_file
t_gpu_num = args.trained_gpu_num
i_gpu_num = args.infer_gpu_num
assert(i_gpu_num % t_gpu_num == 0)
save_int8 = args.quantize or args.act_scale is not None
factor = (int)(i_gpu_num / t_gpu_num)
# load position_embedding from rank 0
model = AutoModelForCausalLM.from_pretrained(args.in_file)
capture_dict = None
if args.quantize:
capture_dict = inject_range_detectors(model)
from datasets import load_dataset
Evaluator(load_dataset('lambada', split='validation[:1000]'),
AutoTokenizer.from_pretrained("facebook/opt-125m"),
"cuda").evaluate(model.to("cuda"))
remove_range_detectors(model)
model.to("cpu")
elif args.act_scale is not None:
scales = {key: value.max() for (key, value) in torch.load(args.act_scale).items()}
capture_dict = {}
for key, value in scales.items():
if key.endswith(".after"):
continue
capture_dict[key + ".weight"] = (value, scales[key + ".after"])
hf_config = vars(model.config)
num_layers = hf_config["num_hidden_layers"]
layer_names = [name for name, param in model.named_parameters()]
# NOTE: save parameters to config files (loaded by triton backends)
config = configparser.ConfigParser()
config["gpt"] = {}
has_post_decoder_layernorm = "model.decoder.final_layer_norm.bias" in layer_names
try:
config["gpt"]["model_name"] = "opt" if hf_config["_name_or_path"] == '' else hf_config["_name_or_path"]
config["gpt"]["head_num"] = str(hf_config["num_attention_heads"])
n_embd = hf_config["hidden_size"]
config["gpt"]["size_per_head"] = str(n_embd // hf_config["num_attention_heads"])
config["gpt"]["inter_size"] = str(hf_config["ffn_dim"])
config['gpt']['max_pos_seq_len'] = str(hf_config['max_position_embeddings'])
config["gpt"]["num_layer"] = str(hf_config["num_hidden_layers"])
config["gpt"]["layernorm_eps"] = "1e-5";
config["gpt"]["layernorm_type"] = "pre_layernorm" if hf_config["do_layer_norm_before"] else "post_layernorm"
config["gpt"]["activation_type"] = "Relu"
config["gpt"]["has_post_decoder_layernorm"] = "1" if has_post_decoder_layernorm else "0"
config["gpt"]["vocab_size"] = str(hf_config["vocab_size"])
config["gpt"]["start_id"] = str(hf_config["bos_token_id"])
config["gpt"]["end_id"] = str(hf_config["eos_token_id"])
config['gpt']['weight_data_type'] = args.weight_data_type
config['gpt']['int8'] = str(save_int8) # really useful?
with open(saved_dir + "/config.ini", 'w') as configfile:
config.write(configfile)
except:
print(f"Fail to save the config in config.ini.")
np_weight_data_type = get_weight_data_type(args.weight_data_type)
huggingface_model_name_pattern = [
"self_attn_layer_norm.bias",
"self_attn_layer_norm.weight",
"self_attn.qkv_proj.bias",
"self_attn.qkv_proj.weight",
"self_attn.out_proj.bias",
"self_attn.out_proj.weight",
"final_layer_norm.bias",
"final_layer_norm.weight",
"fc1.bias",
"fc1.weight",
"fc2.bias",
"fc2.weight",
]
ft_model_name_pattern = [
"input_layernorm.bias",
"input_layernorm.weight",
"attention.query_key_value.bias",
"attention.query_key_value.weight",
"attention.dense.bias",
"attention.dense.weight",
"post_attention_layernorm.bias",
"post_attention_layernorm.weight",
"mlp.dense_h_to_4h.bias",
"mlp.dense_h_to_4h.weight",
"mlp.dense_4h_to_h.bias",
"mlp.dense_4h_to_h.weight",
]
model_named_parameters_iter = model.named_parameters()
model_named_parameters = dict()
for name, param in model_named_parameters_iter:
if "embed" in name:
model_named_parameters[name] = param
elif "project_in" in name:
model_named_parameters[name] = param.permute(1, 0)
elif "project_out" in name:
model_named_parameters[name] = param
else:
model_named_parameters[name] = param.permute(1, 0) if len(param.shape) == 2 else param
for l in range(num_layers):
prefix = f'model.decoder.layers.{l}.self_attn.'
q_weight = model_named_parameters[prefix + 'q_proj.weight']
k_weight = model_named_parameters[prefix + 'k_proj.weight']
v_weight = model_named_parameters[prefix + 'v_proj.weight']
q_bias = model_named_parameters[prefix + 'q_proj.bias']
k_bias = model_named_parameters[prefix + 'k_proj.bias']
v_bias = model_named_parameters[prefix + 'v_proj.bias']
qkv_weight = fuse_qkv_weight(q_weight, k_weight, v_weight)
qkv_bias = fuse_qkv_weight(q_bias, k_bias, v_bias)
if save_int8:
qkv_scales = (capture_dict[prefix + 'q_proj.weight'],
capture_dict[prefix + 'k_proj.weight'],
capture_dict[prefix + 'v_proj.weight'])
capture_dict[prefix + 'qkv_proj.weight'] = (fuse_qkv_weight(qkv_scales[0][0], qkv_scales[1][0], qkv_scales[2][0]),
fuse_qkv_weight(qkv_scales[0][1], qkv_scales[1][1], qkv_scales[2][1]))
model_named_parameters[prefix + 'qkv_proj.weight'] = qkv_weight
model_named_parameters[prefix + 'qkv_proj.bias'] = qkv_bias
pool = multiprocessing.Pool(args.processes)
padding_offset = 2
for name, param in model_named_parameters.items():
if name == 'model.decoder.embed_positions.weight':
param[padding_offset:,...].detach().cpu().numpy().astype(np_weight_data_type).tofile(saved_dir + "model.wpe.bin")
elif name == 'model.decoder.embed_tokens.weight':
if 'model.decoder.project_in.weight' in model_named_parameters.keys():
project_in = model_named_parameters['model.decoder.project_in.weight']
project_out = model_named_parameters['model.decoder.project_out.weight']
torch.matmul(param, project_in).detach().cpu().numpy().astype(np_weight_data_type).tofile(saved_dir + "model.wte.bin")
torch.matmul(param, project_out).detach().cpu().numpy().astype(np_weight_data_type).tofile(saved_dir + "model.lm_head.weight.bin")
else:
param.detach().cpu().numpy().astype(np_weight_data_type).tofile(saved_dir + "model.wte.bin")
param.detach().cpu().numpy().astype(np_weight_data_type).tofile(saved_dir + "model.lm_head.weight.bin")
elif name == 'model.decoder.final_layer_norm.weight':
param.detach().cpu().numpy().astype(np_weight_data_type).tofile(saved_dir + "model.final_layernorm.weight.bin")
elif name == 'model.decoder.final_layer_norm.bias':
param.detach().cpu().numpy().astype(np_weight_data_type).tofile(saved_dir + "model.final_layernorm.bias.bin")
elif "project_in" in name or "project_out" in name:
continue
else:
starmap_args = []
for i in range(len(huggingface_model_name_pattern)):
if huggingface_model_name_pattern[i] in name:
new_name = name.replace("model.decoder.layers.", "layers.").replace(huggingface_model_name_pattern[i], ft_model_name_pattern[i])
starmap_args.append((0, saved_dir, factor, new_name, args,
param.detach().cpu().numpy().astype(np_weight_data_type),
capture_dict, name, np_weight_data_type))
pool.starmap(split_and_convert_process, starmap_args)
pool.close()
pool.join()
if __name__ == "__main__":
torch.multiprocessing.set_start_method("spawn")
torch.multiprocessing.set_sharing_strategy("file_system")
parser = argparse.ArgumentParser(formatter_class=argparse.RawTextHelpFormatter)
parser.add_argument('-saved_dir', '-o', type=str, help='file name of output file', required=True)
parser.add_argument('-in_file', '-i', type=str, help='file name of input checkpoint file', required=True)
parser.add_argument('-trained_gpu_num', '-t_g', type=int, help='How many gpus for inference', default=1)
parser.add_argument('-infer_gpu_num', '-i_g', type=int, help='How many gpus for inference', required=True)
parser.add_argument("-processes", "-p", type=int, help="How many processes to spawn for conversion (default: 4)", default=4)
parser.add_argument("-weight_data_type", type=str, default="fp16", choices=["fp32", "fp16"])
parser.add_argument("-quantize",
help="Store selected in int8, run the models to determine scaling factors",
action="store_true")
parser.add_argument("-act_scale", default=None, help="path to activation scalings for int8 conversion")
args = parser.parse_args()
print("\n=============== Argument ===============")
for key in vars(args):
print(f"{key}: {vars(args)[key]}")
print("========================================")
if args.quantize and args.act_scale is not None:
print("[ERROR] Cannot specify both -quantize and -act_scale")
sys.exit()
start_time = datetime.now()
split_and_convert(args)
stop_time = datetime.now()
run_time = (stop_time - start_time)
print(f"[INFO] Spend {run_time} (h:m:s) to convert the model")