-
Notifications
You must be signed in to change notification settings - Fork 2
/
test_LF.py
340 lines (287 loc) · 13.5 KB
/
test_LF.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
import os
import argparse
import torch
import torch.nn.functional as F
import torchvision
import torch.optim as optim
from torchvision import datasets, transforms
from utils import pgd_attack
from autoattack import AutoAttack
import torch.backends.cudnn as cudnn
import time
from utils import AverageMeter, eval_adv_test, logger, eval_test
import numpy as np
import copy
parser = argparse.ArgumentParser(
description='Linear Finetuning (SLF and ALF)')
parser.add_argument('--experiment', type=str,
help='location for saving trained models,\
we recommend to specify it as a subdirectory of the pretraining export path',
required=True)
parser.add_argument('--data', type=str, default='data/CIFAR10',
help='location of the data')
parser.add_argument('--dataset', default='cifar10', type=str,
help='dataset to be used (cifar10 or cifar100)')
parser.add_argument('--batch-size', type=int, default=512, metavar='N',
help='input batch size for training (default: 512)')
parser.add_argument('--test-batch-size', type=int, default=512, metavar='N',
help='input batch size for testing (default: 512)')
parser.add_argument('--epochs', type=int, default=25, metavar='N',
help='number of epochs to train')
parser.add_argument('--weight-decay', '--wd', default=2e-4,
type=float, metavar='W')
parser.add_argument('--lr', type=float, default=0.01, metavar='LR',
help='learning rate')
parser.add_argument('--momentum', type=float, default=0.9, metavar='M',
help='SGD momentum')
parser.add_argument('--epsilon', type=float, default=8. / 255.,
help='perturbation')
parser.add_argument('--step-size', type=float, default=2. / 255.,
help='perturb step size')
parser.add_argument('--num-steps-train', type=int, default=10,
help='perturb number of steps')
parser.add_argument('--num-steps-test', type=int, default=20,
help='perturb number of steps')
parser.add_argument('--eval-only', action='store_true',
help='if specified, eval the loaded model')
parser.add_argument('--checkpoint', default='', type=str,
help='path to pretrained model')
parser.add_argument('--resume', action='store_true',
help='if resume training')
parser.add_argument('--start-epoch', default=0, type=int,
help='the start epoch number')
parser.add_argument('--decreasing_lr', default='10,20',
help='decreasing strategy')
parser.add_argument('--cvt_state_dict', action='store_true',
help='Need to be specified if pseudo-label finetune is not implemented')
parser.add_argument('--bnNameCnt', default=1, type=int)
parser.add_argument('--evaluation_mode', type=str, default='SLF',
help='SLF or ALF')
parser.add_argument('--test_frequency', type=int, default=0,
help='validation frequency during finetuning, 0 for no evaluation')
parser.add_argument('--gpu_id', type=str, default='0')
args = parser.parse_args()
# settings
os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_id
model_dir = os.path.join('checkpoints', args.experiment)
print(model_dir)
if not os.path.exists(model_dir):
os.makedirs(model_dir)
log = logger(os.path.join(model_dir))
log.info(str(args))
device = 'cuda'
cudnn.benchmark = True
# setup data loader
transform_train = transforms.Compose([
transforms.RandomCrop(96 if args.dataset == 'stl10' else 32, padding=4),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
])
transform_test = transforms.Compose([
transforms.ToTensor(),
])
if args.dataset == 'cifar10':
train_datasets = torchvision.datasets.CIFAR10(
root=args.data, train=True, download=True, transform=transform_train)
vali_datasets = torchvision.datasets.CIFAR10(
root=args.data, train=True, download=True, transform=transform_test)
testset = torchvision.datasets.CIFAR10(
root=args.data, train=False, download=True, transform=transform_test)
num_classes = 10
elif args.dataset == 'cifar100':
train_datasets = torchvision.datasets.CIFAR100(
root=args.data, train=True, download=True, transform=transform_train)
vali_datasets = torchvision.datasets.CIFAR100(
root=args.data, train=True, download=True, transform=transform_test)
testset = torchvision.datasets.CIFAR100(
root=args.data, train=False, download=True, transform=transform_test)
num_classes = 100
elif args.dataset == 'stl10':
train_datasets = torchvision.datasets.STL10(
root=args.data, split='train', transform=transform_train, download=True)
vali_datasets = datasets.STL10(
root=args.data, split='train', transform=transform_test, download=True)
testset = datasets.STL10(
root=args.data, split='test', transform=transform_test, download=True)
num_classes = 10
else:
print("dataset {} is not supported".format(args.dataset))
assert False
train_loader = torch.utils.data.DataLoader(
train_datasets,
batch_size=args.batch_size, shuffle=True)
vali_loader = torch.utils.data.DataLoader(
vali_datasets,
batch_size=args.batch_size, shuffle=True)
test_loader = torch.utils.data.DataLoader(
testset, batch_size=args.test_batch_size, shuffle=True)
def train(args, model, device, train_loader, optimizer, epoch, log):
# model.train()
model.eval()
parameters = list(filter(lambda p: p.requires_grad, model.parameters()))
assert len(parameters) == 2 # fc.weight, fc.bias
dataTimeAve = AverageMeter()
totalTimeAve = AverageMeter()
end = time.time()
criterion = torch.nn.CrossEntropyLoss().cuda()
for batch_idx, (data, target) in enumerate(train_loader):
data, target = data.to(device), target.to(device)
dataTime = time.time() - end
dataTimeAve.update(dataTime)
optimizer.zero_grad()
if args.evaluation_mode == 'ALF':
data = pgd_attack(model, data, target, device, eps=args.epsilon,
alpha=args.step_size, iters=args.num_steps_train, forceEval=True).data
output = model.eval()(data)
loss = criterion(output, target)
loss.backward()
optimizer.step()
totalTime = time.time() - end
totalTimeAve.update(totalTime)
end = time.time()
# print progress
if batch_idx % 10 == 0:
log.info('Train Epoch: {} [{}/{} ({:.0f}%)]\tLoss: {:.6f}\tData time: {:.3f}\tTotal time: {:.3f}'.format(
epoch, batch_idx * len(data), len(train_loader.dataset),
100. * batch_idx / len(train_loader), loss.item(), dataTimeAve.avg, totalTimeAve.avg))
def main():
if args.dataset == 'stl10':
from models.resnet_stl import resnet18
else:
from models.resnet import resnet18
model = resnet18(num_classes=num_classes).to(device)
for name, param in model.named_parameters():
if name not in ['fc.weight', 'fc.bias']:
param.requires_grad = False
parameters = list(filter(lambda p: p.requires_grad, model.parameters()))
assert len(parameters) == 2 # fc.weight, fc.bias
optimizer = optim.SGD(parameters, lr=args.lr,
momentum=args.momentum, weight_decay=args.weight_decay)
decreasing_lr = list(map(int, args.decreasing_lr.split(',')))
scheduler = torch.optim.lr_scheduler.MultiStepLR(
optimizer, milestones=decreasing_lr, gamma=0.1)
start_epoch = args.start_epoch
if args.checkpoint != '':
checkpoint = torch.load(args.checkpoint, map_location="cpu")
if 'state_dict' in checkpoint:
state_dict = checkpoint['state_dict']
elif 'model' in checkpoint:
state_dict = checkpoint['model']
else:
state_dict = checkpoint
if args.cvt_state_dict:
state_dict = cvt_state_dict(
state_dict, args, num_classes=num_classes)
elif not args.eval_only and not args.resume:
state_dict['fc.weight'] = torch.zeros(num_classes, 512).cuda()
state_dict['fc.bias'] = torch.zeros(num_classes).cuda()
# model.normalize = torch.nn.Identity()
model.load_state_dict(state_dict, strict=False)
log.info('read checkpoint {}'.format(args.checkpoint))
if args.resume:
if 'epoch' in checkpoint and 'optim' in checkpoint:
start_epoch = checkpoint['epoch'] + 1
optimizer.load_state_dict(checkpoint['optim'])
for i in range(start_epoch):
scheduler.step()
log.info("resume the checkpoint {} from epoch {}".format(
args.checkpoint, checkpoint['epoch']))
else:
log.info("cannot resume since lack of files")
assert False
if args.eval_only:
model.eval()
_, test_tacc = eval_test(model, device, test_loader, log)
test_atacc = eval_adv_test(model, device, test_loader, epsilon=args.epsilon, alpha=args.step_size,
criterion=F.cross_entropy, log=log, attack_iter=args.num_steps_test)
log_path = 'checkpoints/' + args.experiment + '/robustness_result.txt'
t_loader = torch.utils.data.DataLoader(
testset, batch_size=10000 if args.dataset != 'stl10' else 8000, shuffle=True, num_workers=0, pin_memory=True, drop_last=True)
runAA(model, t_loader, log_path)
log.info("On the {}, test tacc is {}, test atacc is {}".format(
args.checkpoint, test_tacc, test_atacc))
return
best_atacc = 0
for epoch in range(start_epoch + 1, args.epochs + 1):
# adjust learning rate for SGD
log.info("current lr is {}".format(
optimizer.state_dict()['param_groups'][0]['lr']))
# linear classification
train(args, model, device, train_loader, optimizer, epoch, log)
scheduler.step()
# evaluation
if (not args.test_frequency == 0) and (epoch % args.test_frequency == 1 or args.test_frequency == 1):
print('================================================================')
eval_test(model, device, test_loader, log)
vali_atacc = eval_adv_test(model, device, test_loader, epsilon=args.epsilon, alpha=args.step_size,
criterion=F.cross_entropy, log=log, attack_iter=args.num_steps_test)
if vali_atacc > best_atacc:
best_atacc = vali_atacc
torch.save({
'epoch': epoch,
'state_dict': model.state_dict(),
'optim': optimizer.state_dict(),
}, os.path.join(model_dir, 'model_bestAT.pt'))
print('================================================================')
# save checkpoint
torch.save({
'epoch': epoch,
'state_dict': model.state_dict(),
'optim': optimizer.state_dict(),
}, os.path.join(model_dir, 'model_finetune.pt'))
# testing
_, test_tacc = eval_test(model, device, test_loader, log)
test_atacc = eval_adv_test(model, device, test_loader, epsilon=args.epsilon, alpha=args.step_size,
criterion=F.cross_entropy, log=log, attack_iter=args.num_steps_test)
log.info("On the final model, test tacc is {}, test atacc is {}".format(
test_tacc, test_atacc))
log_path = 'checkpoints/' + args.experiment + '/robustness_result.txt'
aa_loader = torch.utils.data.DataLoader(
testset, batch_size=8000 if args.dataset == 'stl10' else 10000, shuffle=True, num_workers=0, pin_memory=True, drop_last=True)
runAA(model, aa_loader, log_path)
def runAA(model, loader, log_path):
model.eval()
adversary = AutoAttack(model, norm='Linf', eps=8/255, version='standard', log_path=log_path)
for images, labels in loader:
images = images.cuda()
labels = labels.cuda()
adversary.run_standard_evaluation(images, labels, bs=100)
def cvt_state_dict(state_dict, args, num_classes):
# deal with adv bn
state_dict_new = copy.deepcopy(state_dict)
if args.bnNameCnt >= 0:
for name, item in state_dict.items():
if 'bn' in name:
assert 'bn_list' in name
state_dict_new[name.replace(
'.bn_list.{}'.format(args.bnNameCnt), '')] = item
name_to_del = []
for name, item in state_dict_new.items():
if 'bn' in name and 'adv' in name:
name_to_del.append(name)
if 'bn_list' in name:
name_to_del.append(name)
if 'fc' in name:
name_to_del.append(name)
for name in np.unique(name_to_del):
del state_dict_new[name]
# deal with down sample layer
keys = list(state_dict_new.keys())[:]
name_to_del = []
for name in keys:
if 'downsample.conv' in name:
state_dict_new[name.replace(
'downsample.conv', 'downsample.0')] = state_dict_new[name]
name_to_del.append(name)
if 'downsample.bn' in name:
state_dict_new[name.replace(
'downsample.bn', 'downsample.1')] = state_dict_new[name]
name_to_del.append(name)
for name in np.unique(name_to_del):
del state_dict_new[name]
# zero init fc
state_dict_new['fc.weight'] = torch.zeros(num_classes, 512).cuda()
state_dict_new['fc.bias'] = torch.zeros(num_classes).cuda()
return state_dict_new
if __name__ == '__main__':
main()