def find_lr(self, start_lr=1e-7, end_lr=100, num_iter=100):
optimizer_state = self.optimizer.state_dict()
self.update_lr(start_lr)
self.lr_finder = LRFinder(self.model, self.optimizer, self.criterion,
self.device)
self.lr_finder.range_test(self.train_loader,
end_lr=end_lr,
num_iter=num_iter)
self.optimizer.load_state_dict(optimizer_state)
self.lr_finder.plot()
def lr_finder(model, optimizer, criterion, trainloader):
lr_finder = LRFinder(model, optimizer, criterion, device="cuda")
lr_finder.range_test(trainloader,
end_lr=100,
num_iter=100,
step_mode="exp")
lr_finder.plot() #to plot the loss vs Learning Rate curve
lr_finder.reset() # to reset the lr_finder
def lr_finder(model, train_loader):
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
criterion = nn.CrossEntropyLoss()
optimizer_ft = optim.Adam(model.parameters(), lr=0.0000001)
lr_finder = LRFinder(model, optimizer_ft, criterion, device=device)
lr_finder.range_test(train_loader, end_lr=1, num_iter=1000)
lr_finder.reset()
lr_finder.plot()
def executeLr_finder(model, optimizer, device, trainloader, criterion):
#finding and plotting the best LR
lr_finder = LRFinder(model, optimizer, criterion, device="cuda")
lr_finder.range_test(trainloader,
end_lr=100,
num_iter=100,
step_mode="exp")
lr_finder.plot() # to inspect the loss-learning rate graph
lr_finder.reset(
) # to reset the model and optimizer to their initial state
def get_model(batchsize=8, dropout=0.3):
# Inputs
inp_normal = keras.layers.Input(shape=(xtrain.shape[1] - len(embedding_features), ), name='inp_normal')
inp_dow_embedding = keras.layers.Input(shape=(1, ), name='inp_dow_embedding')
inp_hod_embedding = keras.layers.Input(shape=(1, ), name='inp_hod_embedding')
# Embeddings
dow_embedding = keras.layers.Embedding(input_dim=7, output_dim=3, input_length=1)(inp_dow_embedding)
dow_embedding = keras.layers.Flatten()(dow_embedding)
hod_embedding = keras.layers.Embedding(input_dim=24, output_dim=10, input_length=1)(inp_hod_embedding)
hod_embedding = keras.layers.Flatten()(hod_embedding)
# Hidden layers
concat = keras.layers.Concatenate()([inp_normal, dow_embedding, hod_embedding])
x = keras.layers.Dense(units=100, activation='relu')(concat)
x = keras.layers.BatchNormalization()(x)
x = keras.layers.Dropout(dropout)(x)
x = keras.layers.Dense(units=40, activation='relu')(x)
x = keras.layers.BatchNormalization()(x)
x = keras.layers.Dropout(dropout)(x)
x = keras.layers.Dense(units=10, activation='relu')(x)
x = keras.layers.BatchNormalization()(x)
out = keras.layers.Dense(units=1, activation='sigmoid')(x)
nn = keras.Model(inputs=[inp_normal, inp_dow_embedding, inp_hod_embedding], outputs=out)
nn.compile(
loss='binary_crossentropy',
optimizer=keras.optimizers.SGD(lr=0.0001),
metrics=['accuracy', keras.metrics.Precision()]
)
lr_finder = LRFinder(0.0001, 0.1)
nn.fit(
x={
'inp_normal': xtrain.drop(embedding_features, axis=1).values,
'inp_dow_embedding': xtrain.dayofweek.values.reshape(-1, 1),
'inp_hod_embedding': xtrain.hourofday.values.reshape(-1, 1)
},
y=ytrain.values,
validation_data=(
[
xval.drop(embedding_features, axis=1).values,
xval.dayofweek.values.reshape(-1, 1),
xval.hourofday.values.reshape(-1, 1)
],
yval.values
),
epochs=2,
batch_size=batchsize,
callbacks=[lr_finder]
)
return nn
def find_lr(self,model, device, train_loader, lr_val=1e-8, decay=1e-2): criterion = nn.CrossEntropyLoss() optimizer = optim.SGD(model.parameters(), lr=lr_val, weight_decay=decay) lr_finder = LRFinder(model, optimizer, criterion, device) lr_finder.range_test(train_loader, end_lr=100, num_iter=100, step_mode="exp") lr_finder.plot() return lr_finder
def lr_finder(net, optimizer, loss_fun, trainloader, testloader):
# Using LRFinder
lr_finder = LRFinder(net, optimizer, loss_fun, device='cuda')
lr_finder.range_test(trainloader,
val_loader=testloader,
start_lr=1e-3,
end_lr=0.1,
num_iter=100,
step_mode='exp')
lr_finder.plot(log_lr=False)
lr_finder.reset(
) # important to restore the model and optimizer's parameters to its initial state
return lr_finder.history
def train_and_test():
# load network
model = vgg11(365, 1)
model.compile(
loss='categorical_crossentropy',
# Learning rate will be set by lr_finder
optimizer=SGD(lr=0.0, momentum=0.9),
metrics=['accuracy', top_5])
# load data
img_size = (224, 224)
color_mode = 'grayscale'
batch_size = 64
train_dir = '/usr/local/data/gabriel/places365_line_drawings/train'
test_dir = '/usr/local/data/gabriel/places365_line_drawings/val'
# fixed for places365
nb_train_samples = 1803460.
nb_test_samples = 36500.
train_datagen = ImageDataGenerator(rescale=1. / 255,
shear_range=0.2,
zoom_range=0.2,
horizontal_flip=True)
# no test data for now
# test_datagen = ImageDataGenerator(rescale=1. / 255)
train_gen = train_datagen.flow_from_directory(train_dir,
target_size=img_size,
batch_size=batch_size,
class_mode='categorical',
color_mode=color_mode)
# no test data for now
# test_gen = test_datagen.flow_from_directory(
# test_dir,
# target_size = img_size,
# batch_size = batch_size,
# class_mode = 'categorical',
# color_mode = color_mode
# )
# find best learning rate
lr_finder = LRFinder(min_lr=1e-5,
max_lr=1e-2,
steps_per_epoch=np.ceil(nb_train_samples /
batch_size),
epochs=4)
model.fit_generator(train_gen,
steps_per_epoch=np.ceil(nb_train_samples / batch_size),
epochs=4,
callbacks=[lr_finder])
# save loss and learning rate plots to files
lr_finder.plot_loss('loss.png')
lr_finder.plot_lr('lr.png')
def lr_finder(self, end_lr):
lr_find = LRFinder(self.model, self.optimizer, self.criterion,
cfg.device)
lr_find.range_test(self.data_loaders['val'],
end_lr=end_lr,
num_iter=2000)
lr_find.plot()
def _main():
annotation_path = 'train.txt'
classes_path = 'model_data/openimgs_classes.txt'
anchors_path = 'model_data/yolo_anchors.txt'
class_names = get_classes(classes_path)
num_classes = len(class_names)
anchors = get_anchors(anchors_path)
input_shape = (416, 416) # multiple of 32, hw
# use darknet53 weights
#model = create_model(input_shape, anchors, num_classes,
# freeze_body=2, weights_path='model_data/darknet53_weights.h5')
model = create_model(input_shape,
anchors,
num_classes,
freeze_body=0,
weights_path='logs/001/trained_weights_stage_2.h5')
val_split = 0.1
with open(annotation_path) as f:
lines = f.readlines()
#np.random.seed(10101)
np.random.shuffle(lines)
#np.random.seed(None)
num_val = int(len(lines) * val_split)
num_val = 10000 if num_val > 10000 else num_val
num_train = len(lines) - num_val
if True:
batch_size = 6
lr_finder = LRFinder(min_lr=1e-10,
max_lr=2e-2,
steps_per_epoch=TOTAL_ITERATIONS,
epochs=1)
for i in range(len(model.layers)):
model.layers[i].trainable = True
model.compile(optimizer=SGD(lr=1e-8),
loss={
'yolo_loss': lambda y_true, y_pred: y_pred
})
print('train on {} samples, val on {} samples, with batch size {}.'.
format(num_train, num_val, batch_size))
model.fit_generator(data_generator_wrapper(lines[:num_train],
batch_size, input_shape,
anchors, num_classes),
steps_per_epoch=TOTAL_ITERATIONS,
validation_data=data_generator_wrapper(
lines[num_train:], batch_size, input_shape,
anchors, num_classes),
validation_steps=1,
epochs=1,
initial_epoch=0,
callbacks=[lr_finder])
lr_finder.save_history('lr_finder_loss.csv')
lr_finder.plot_loss('lr_finder_loss.png')
def get_LR(model, trainloader, optimizer, criterion, device, testloader=None):
# print("########## Tweaked version from fastai ###########")
# lr_find = LRFinder(model, optimizer, criterion, device="cuda")
# lr_find.range_test(trainloader, end_lr=100, num_iter=100)
# best_lr=lr_find.plot() # to inspect the loss-learning rate graph
# lr_find.reset()
# return best_lr
# print("########## Tweaked version from fastai ###########")
# lr_find = LRFinder(model, optimizer, criterion, device="cuda")
# lr_find.range_test(trainloader, end_lr=1, num_iter=100)
# lr_find.plot() # to inspect the loss-learning rate graph
# lr_find.reset()
# for index in range(len(lr_find.history['loss'])):
# item = lr_find.history['loss'][index]
# if item == lr_find.best_loss:
# min_val_index = index
# print(f"{min_val_index}")
#
# lr_find.plot(show_lr=lr_find.history['lr'][75])
# lr_find.plot(show_lr=lr_find.history['lr'][min_val_index])
#
# val_index = 75
# mid_val_index = math.floor((val_index + min_val_index)/2)
# show_lr=[{'data': lr_find.history['lr'][val_index], 'linestyle': 'dashed'}, {'data': lr_find.history['lr'][mid_val_index], 'linestyle': 'solid'}, {'data': lr_find.history['lr'][min_val_index], 'linestyle': 'dashed'}]
# # lr_find.plot_best_lr(skip_start=10, skip_end=5, log_lr=True, show_lr=show_lr, ax=None)
#
# best_lr = lr_find.history['lr'][mid_val_index]
# print(f"LR to be used: {best_lr}")
#
# return best_lr
print("########## Leslie Smith's approach ###########")
lr_find = LRFinder(model, optimizer, criterion, device="cuda")
lr_find.range_test(trainloader,
val_loader=testloader,
end_lr=1,
num_iter=100,
step_mode="linear")
best_lr = lr_find.plot(log_lr=False)
lr_find.reset()
return best_lr
#iaa.Sometimes(0.1, iaa.Grayscale(alpha=(0.0, 1.0), from_colorspace="RGB", name="grayscale")),
# iaa.Sometimes(0.2, iaa.AdditiveLaplaceNoise(scale=(0, 0.1*255), per_channel=True, name="gaus-noise")),
# Color, Contrast, etc.
iaa.Sometimes(0.2, iaa.Multiply((0.75, 1.25), per_channel=0.1, name="brightness")),
iaa.Sometimes(0.2, iaa.GammaContrast((0.7, 1.3), per_channel=0.1, name="contrast")),
iaa.Sometimes(0.2, iaa.AddToHueAndSaturation((-20, 20), name="hue-sat")),
iaa.Sometimes(0.3, iaa.Add((-20, 20), per_channel=0.5, name="color-jitter")),
])
augs_test = iaa.Sequential([
# Geometric Augs
iaa.Scale((imsize, imsize), 0),
])
db_train = AlphaPilotSegmentation(
input_dir='data/dataset/train/images', label_dir='data/dataset/train/labels',
transform=augs_train,
input_only=["gaus-blur", "grayscale", "gaus-noise", "brightness", "contrast", "hue-sat", "color-jitter"],
return_image_name=False
)
trainloader = DataLoader(db_train, batch_size=p['trainBatchSize'], shuffle=True, num_workers=32, drop_last=True)
# %matplotlib inline
lr_finder = LRFinder(net, optimizer, criterion, device="cuda")
lr_finder.range_test(trainloader, end_lr=1, num_iter=100)
lr_finder.plot()
# plt.show()
# else tensor.size(self.ch_dim) # for i in range(2)] # pad = torch.empty(padding_size, dtype=tensor.dtype).fill_(self.fill_value) # tensor = torch.cat((tensor, pad), dim=self.len_dim) # import os # os.environ['MKL_NUM_THREADS'] = '1' # import numpy as np # import utils # # # def main(): # inpt = np.random.randint(-10, 10, 150000) # # for i in range(1000): # out = utils.spectrogram(inpt, 256) # # # if __name__ == '__main__': # main() from lr_finder import LRFinder criterion = nn.CrossEntropyLoss() optimizer = optim.Adam(model.parameters(), lr=1e-5) lr_finder = LRFinder(model, optimizer, criterion, device="cuda") lr_finder.range_test(train_loader, end_lr=1, num_iter=50, step_mode="exp") lr_finder.get_best_lr() # lr_finder.plot() # lr_finder.history
def main(batch_size: int = 24,
epochs: int = 384,
train_path: str = 'train',
val_path: str = 'val',
multi_gpu_weights=None,
weights=None,
workers: int = 8,
find_lr: bool = False):
keras_model = MobileDetectNetModel.complete_model()
keras_model.summary()
if weights is not None:
keras_model.load_weights(weights, by_name=True)
train_seq = MobileDetectNetSequence(train_path,
stage="train",
batch_size=batch_size)
val_seq = MobileDetectNetSequence(val_path,
stage="val",
batch_size=batch_size)
keras_model = keras.utils.multi_gpu_model(keras_model,
gpus=[0, 1],
cpu_merge=True,
cpu_relocation=False)
if multi_gpu_weights is not None:
keras_model.load_weights(multi_gpu_weights, by_name=True)
callbacks = []
def region_loss(classes):
def loss_fn(y_true, y_pred):
# Don't penalize bounding box errors when there is no object present
return 10 * classes * K.abs(y_pred - y_true)
return loss_fn
keras_model.compile(optimizer=SGD(),
loss=[
'mean_absolute_error',
region_loss(
keras_model.get_layer('classes').output),
'binary_crossentropy'
])
if find_lr:
from lr_finder import LRFinder
lr_finder = LRFinder(keras_model)
lr_finder.find_generator(train_seq,
start_lr=0.000001,
end_lr=1,
epochs=5)
lr_finder.plot_loss()
return
filepath = "weights-{epoch:02d}-{val_loss:.4f}-multi-gpu.hdf5"
checkpoint = ModelCheckpoint(filepath,
monitor='val_loss',
verbose=1,
save_best_only=True,
mode='min')
callbacks.append(checkpoint)
sgdr_sched = SGDRScheduler(0.00001,
0.01,
steps_per_epoch=np.ceil(
len(train_seq) / batch_size),
mult_factor=1.5)
callbacks.append(sgdr_sched)
keras_model.fit_generator(
train_seq,
validation_data=val_seq,
epochs=epochs,
steps_per_epoch=np.ceil(len(train_seq) / batch_size),
validation_steps=np.ceil(len(val_seq) / batch_size),
callbacks=callbacks,
use_multiprocessing=True,
workers=workers,
shuffle=True)
def main(args=None):
set_random_seed(63)
chainer.global_config.autotune = True
chainer.cuda.set_max_workspace_size(512 * 1024 * 1024)
parser = argparse.ArgumentParser()
parser.add_argument('--batchsize',
'-b',
type=int,
default=64,
help='Number of images in each mini-batch')
parser.add_argument('--learnrate',
'-l',
type=float,
default=0.01,
help='Learning rate for SGD')
parser.add_argument('--epoch',
'-e',
type=int,
default=80,
help='Number of sweeps over the dataset to train')
parser.add_argument('--gpu',
'-g',
type=int,
default=0,
help='GPU ID (negative value indicates CPU)')
parser.add_argument('--out',
'-o',
default='result',
help='Directory to output the result')
parser.add_argument('--resume',
'-r',
default='',
help='Resume the training from snapshot')
parser.add_argument('--loss-function',
choices=['focal', 'sigmoid'],
default='focal')
parser.add_argument('--optimizer',
choices=['sgd', 'adam', 'adabound'],
default='adam')
parser.add_argument('--size', type=int, default=224)
parser.add_argument('--limit', type=int, default=None)
parser.add_argument('--data-dir', type=str, default='data')
parser.add_argument('--lr-search', action='store_true')
parser.add_argument('--pretrained', type=str, default='')
parser.add_argument('--backbone',
choices=['resnet', 'seresnet', 'debug_model'],
default='resnet')
parser.add_argument('--log-interval', type=int, default=100)
parser.add_argument('--find-threshold', action='store_true')
parser.add_argument('--finetune', action='store_true')
parser.add_argument('--mixup', action='store_true')
args = parser.parse_args() if args is None else parser.parse_args(args)
print(args)
if args.mixup and args.loss_function != 'focal':
raise ValueError('mixupを使うときはfocal lossしか使えません（いまんところ）')
train, test, cooccurrence = get_dataset(args.data_dir, args.size,
args.limit, args.mixup)
base_model = backbone_catalog[args.backbone](args.dropout)
if args.pretrained:
print('loading pretrained model: {}'.format(args.pretrained))
chainer.serializers.load_npz(args.pretrained, base_model, strict=False)
model = TrainChain(base_model,
1,
loss_fn=args.loss_function,
cooccurrence=cooccurrence,
co_coef=0)
if args.gpu >= 0:
chainer.backends.cuda.get_device_from_id(args.gpu).use()
model.to_gpu()
if args.optimizer in ['adam', 'adabound']:
optimizer = Adam(alpha=args.learnrate,
adabound=args.optimizer == 'adabound',
weight_decay_rate=1e-5,
gamma=5e-7)
elif args.optimizer == 'sgd':
optimizer = chainer.optimizers.MomentumSGD(lr=args.learnrate)
optimizer.setup(model)
if not args.finetune:
print('最初のエポックは特徴抽出層をfreezeします')
model.freeze_extractor()
train_iter = chainer.iterators.MultiprocessIterator(train,
args.batchsize,
n_processes=8,
n_prefetch=2)
test_iter = chainer.iterators.MultithreadIterator(test,
args.batchsize,
n_threads=8,
repeat=False,
shuffle=False)
if args.find_threshold:
# train_iter, optimizerなど無駄なsetupもあるが。。
print('thresholdを探索して終了します')
chainer.serializers.load_npz(join(args.out, 'bestmodel_loss'),
base_model)
print('lossがもっとも小さかったモデルに対しての結果:')
find_threshold(base_model, test_iter, args.gpu, args.out)
chainer.serializers.load_npz(join(args.out, 'bestmodel_f2'),
base_model)
print('f2がもっとも大きかったモデルに対しての結果:')
find_threshold(base_model, test_iter, args.gpu, args.out)
return
# Set up a trainer
updater = training.updaters.StandardUpdater(
train_iter,
optimizer,
device=args.gpu,
converter=lambda batch, device: chainer.dataset.concat_examples(
batch, device=device))
trainer = training.Trainer(updater, (args.epoch, 'epoch'), out=args.out)
# Evaluate the model with the test dataset for each epoch
trainer.extend(FScoreEvaluator(test_iter, model, device=args.gpu))
if args.optimizer == 'sgd':
# Adamにweight decayはあんまりよくないらしい
optimizer.add_hook(chainer.optimizer_hooks.WeightDecay(5e-4))
trainer.extend(extensions.ExponentialShift('lr', 0.1),
trigger=(3, 'epoch'))
if args.lr_search:
print('最適な学習率を探します')
trainer.extend(LRFinder(1e-7, 1, 5, optimizer),
trigger=(1, 'iteration'))
elif args.optimizer in ['adam', 'adabound']:
if args.lr_search:
print('最適な学習率を探します')
trainer.extend(LRFinder(1e-7, 1, 5, optimizer, lr_key='alpha'),
trigger=(1, 'iteration'))
trainer.extend(extensions.ExponentialShift('alpha', 0.2),
trigger=triggers.EarlyStoppingTrigger(
monitor='validation/main/loss'))
# Take a snapshot of Trainer at each epoch
trainer.extend(
extensions.snapshot(filename='snaphot_epoch_{.updater.epoch}'),
trigger=(10, 'epoch'))
# Take a snapshot of Model which has best val loss.
# Because searching best threshold for each evaluation takes too much time.
trainer.extend(extensions.snapshot_object(model.model, 'bestmodel_loss'),
trigger=triggers.MinValueTrigger('validation/main/loss'))
trainer.extend(extensions.snapshot_object(model.model, 'bestmodel_f2'),
trigger=triggers.MaxValueTrigger('validation/main/f2'))
trainer.extend(extensions.snapshot_object(model.model,
'model_{.updater.epoch}'),
trigger=(5, 'epoch'))
# Write a log of evaluation statistics for each epoch
trainer.extend(
extensions.LogReport(trigger=(args.log_interval, 'iteration')))
trainer.extend(
extensions.PrintReport([
'epoch', 'lr', 'elapsed_time', 'main/loss', 'main/co_loss',
'validation/main/loss', 'validation/main/co_loss',
'validation/main/precision', 'validation/main/recall',
'validation/main/f2', 'validation/main/threshold'
]))
trainer.extend(extensions.ProgressBar(update_interval=args.log_interval))
trainer.extend(extensions.observe_lr(),
trigger=(args.log_interval, 'iteration'))
trainer.extend(CommandsExtension())
save_args(args, args.out)
trainer.extend(lambda trainer: model.unfreeze_extractor(),
trigger=(1, 'epoch'))
if args.resume:
# Resume from a snapshot
chainer.serializers.load_npz(args.resume, trainer)
# save args with pickle for prediction time
pickle.dump(args, open(str(Path(args.out).joinpath('args.pkl')), 'wb'))
# Run the training
trainer.run()
# find optimal threshold
chainer.serializers.load_npz(join(args.out, 'bestmodel_loss'), base_model)
print('lossがもっとも小さかったモデルに対しての結果:')
find_threshold(base_model, test_iter, args.gpu, args.out)
chainer.serializers.load_npz(join(args.out, 'bestmodel_f2'), base_model)
print('f2がもっとも大きかったモデルに対しての結果:')
find_threshold(base_model, test_iter, args.gpu, args.out)
from lr_finder import LRFinder from src.model_lib.MultiFTNet import MultiFTNet from src.model_lib.MiniFASNet import MiniFASNetV1, MiniFASNetV2,MiniFASNetV1SE,MiniFASNetV2SE from src.utility import get_kernel from torch.nn import CrossEntropyLoss, MSELoss from torch import optim from src.data_io.dataset_loader import get_train_loader,get_eval_loader from src.default_config import get_default_config, update_config from train import parse_args import os os.environ["CUDA_VISIBLE_DEVICES"] = "3" kernel_size = get_kernel(80, 60) model = MultiFTNet(conv6_kernel = kernel_size) cls_criterion = CrossEntropyLoss() FT_criterion = MSELoss() from torch import optim # optimizer = optim.SGD(model.parameters(), # lr=0.1, # weight_decay=5e-4, # momentum=0.9) optimizer = optim.AdamW(model.parameters()) lr_finder = LRFinder(model, optimizer, cls_criterion,FT_criterion) conf = get_default_config() args = parse_args() conf = update_config(args, conf) trainloader = get_train_loader(conf) val_loader = get_eval_loader(conf) lr_finder.range_test(trainloader, end_lr=1, num_iter=100, step_mode="linear") lr_finder.plot(log_lr=False) lr_finder.reset()
from learner import Learner
from sklearn import model_selection as ms
from classifier import Classifier
if __name__ == '__main__':
device = torch.device("cpu")
net = Classifier('tf_efficientnet_b4_ns', 5, pretrained=True)
transform = T.Compose([
T.ToTensor(),
T.Resize((380, 380)),
T.Normalize((0.485, 0.456, 0.406), (0.229, 0.224, 0.225))
])
data_root = "/home/namnd/personal-workspace/cassava-leaf-disease-classification"
df = pd.read_csv(os.path.join(data_root, 'train.csv'))
# train_df, val_df = ms.train_test_split(df, test_size=0.2, random_state=42, stratify=df.label.values)
#
# train_dataset = CassavaLeafDiseaseDataset(data_root, df=train_df, transform=transform)
# val_dataset = CassavaLeafDiseaseDataset(data_root, df=val_df, transform=transform)
#
# train_loader = torch.utils.data.DataLoader(train_dataset, batch_size=8, shuffle=True, num_workers=mp.cpu_count())
# val_loader = torch.utils.data.DataLoader(val_dataset, batch_size=4, shuffle=False, num_workers=mp.cpu_count())
dataloader = CassavaLeafDiseaseDataset(data_root, df, transform=transform)
learner = Learner(net, dataloader, device)
lr_finder = LRFinder(learner)
lr_finder.find()
lr_finder.plot()
def main(args):
# load train data into ram
# data_path = '/mntlong/lanl_comp/data/'
file_dir = os.path.dirname(__file__)
data_path = os.path.abspath(os.path.join(file_dir, os.path.pardir, 'data'))
train_info_path = os.path.join(data_path, 'train_info.csv')
train_data_path = os.path.join(data_path, 'train_compressed.npz')
train_info = pd.read_csv(train_info_path, index_col='Unnamed: 0')
train_info['exp_len'] = train_info['indx_end'] - train_info['indx_start']
train_signal = np.load(train_data_path)['signal']
train_quaketime = np.load(train_data_path)['quake_time']
# В валидацию берем 2 последних волны (части эксперимента)
val_start_idx = train_info.iloc[-2, :]['indx_start']
val_signal = train_signal[val_start_idx:]
val_quaketime = train_quaketime[val_start_idx:]
train_signal = train_signal[:val_start_idx]
train_quaketime = train_quaketime[:val_start_idx]
# training params
window_size = 150000
overlap_size = int(window_size * 0.5)
num_bins = 17
model = models.BaselineNetRawSignalCnnRnnV1(out_size=num_bins-1)
loss_fn = nn.CrossEntropyLoss() # L1Loss() SmoothL1Loss() MSELoss()
# logs_path = '/mntlong/scripts/logs/'
logs_path = os.path.abspath(os.path.join(file_dir, os.path.pardir, 'logs'))
current_datetime = datetime.today().strftime('%b-%d_%H-%M-%S')
log_writer_path = os.path.join(logs_path, 'runs',
current_datetime + '_' + args.model_name)
train_dataset = data.SignalDataset(train_signal, train_quaketime,
num_bins=num_bins,
idxs_wave_end=train_info['indx_end'].values,
window_size=window_size,
overlap_size=overlap_size)
val_dataset = data.SignalDataset(val_signal, val_quaketime,
num_bins=num_bins,
idxs_wave_end=train_info['indx_end'].values,
window_size=window_size,
overlap_size=overlap_size)
print('wave size:', train_dataset[0][0].size())
train_loader = DataLoader(dataset=train_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=5,
pin_memory=True)
val_loader = DataLoader(dataset=val_dataset,
batch_size=args.batch_size,
shuffle=False,
num_workers=5,
pin_memory=True)
if args.find_lr:
from lr_finder import LRFinder
optimizer = optim.Adam(model.parameters(), lr=1e-6)
lr_find = LRFinder(model, optimizer, loss_fn, device='cuda')
lr_find.range_test(train_loader, end_lr=1, num_iter=50, step_mode='exp')
best_lr = lr_find.get_best_lr()
lr_find.plot()
lr_find.reset()
print('best lr found: {:.2e}'.format(best_lr))
else:
best_lr = 3e-4
optimizer = optim.Adam(model.parameters(), lr=best_lr) # weight_decay=0.1
lr_sched = optim.lr_scheduler.ReduceLROnPlateau(optimizer,
factor=0.5,
patience=3,
threshold=0.005)
log_writer = SummaryWriter(log_writer_path)
utils.train_clf_model(model=model, optimizer=optimizer, lr_scheduler=lr_sched,
train_loader=train_loader, val_loader=val_loader,
num_epochs=args.num_epochs, model_name=args.model_name,
logs_path=logs_path, log_writer=log_writer,
loss_fn=loss_fn, num_bins=num_bins)
def main():
global global_token_count, event_writer, train_step, train_loss, last_log_step, \
best_val_loss, epoch, model
if args.local_rank > 0:
pass # skip shutdown when rank is explicitly set + not zero rank
else:
os.system('shutdown -c')
if not args.local:
logger.info(
f'Distributed initializing process group with {args.dist_backend}, {args.dist_url}, {util.get_world_size()}'
)
dist.init_process_group(backend=args.dist_backend,
init_method=args.dist_url,
world_size=util.get_world_size())
assert (util.get_world_size() == dist.get_world_size())
logger.info(
f"Distributed: success ({args.local_rank}/{dist.get_world_size()})"
)
model = MemTransformerLM(ntokens,
args.n_layer,
args.n_head,
args.d_model,
args.d_head,
args.d_inner,
args.dropout,
args.dropatt,
tie_weight=args.tied,
d_embed=args.d_embed,
div_val=args.div_val,
tie_projs=tie_projs,
pre_lnorm=args.pre_lnorm,
tgt_len=args.tgt_len,
ext_len=args.ext_len,
mem_len=args.mem_len,
cutoffs=cutoffs,
same_length=args.same_length,
attn_type=args.attn_type,
clamp_len=args.clamp_len,
sample_softmax=args.sample_softmax)
# log model info
n_all_param = sum([p.nelement() for p in model.parameters()])
log_tb('sizes/params', n_all_param)
n_nonemb_param = sum([p.nelement() for p in model.layers.parameters()])
log_tb('sizes/non_emb_params', n_nonemb_param)
logger.info('params %s non_emb_params %s', n_all_param, n_nonemb_param)
# optimizer
if args.optim.lower() == 'sgd':
optimizer = optim.SGD(model.parameters(),
lr=args.lr,
momentum=args.mom)
elif args.optim.lower() == 'lamb':
optimizer = Lamb(model.parameters(), lr=args.lr, weight_decay=args.wd)
else:
assert args.optim.lower() == 'adam'
optimizer = optim.Adam(model.parameters(),
lr=args.lr,
weight_decay=args.wd)
# scheduler
if args.scheduler == 'cosine':
# Divide by 1e6 for numerical stability.
scheduler = optim.lr_scheduler.CosineAnnealingLR(optimizer,
args.max_tokens //
1e6,
eta_min=args.eta_min)
elif args.scheduler == 'finder':
scheduler = LRFinder(optimizer,
args.max_tokens,
init_value=args.lr / 1e3)
elif args.scheduler == 'constant':
pass
model.apply(weights_init)
model.word_emb.apply(
weights_init
) # ensure embedding init is not overridden by out_layer in case of weight sharing
if args.checkpoint:
if global_rank == 0:
util.restore_from_checkpoint(model=model,
checkpoint_fn=args.checkpoint)
model = model.to(device)
if args.fp16:
model = FP16_Module(model)
optimizer = FP16_Optimizer(optimizer,
static_loss_scale=args.static_loss_scale,
dynamic_loss_scale=args.dynamic_loss_scale,
dynamic_loss_args={'init_scale': 2**16},
verbose=False)
if args.local:
model = nn.DataParallel(model, dim=1)
else:
# Uncomment find_unused_parameters and upgrade to torch 1.1 for adaptive embedding.
model = DistributedDataParallel(
model, device_ids=[args.local_rank],
output_device=args.local_rank) #, find_unused_parameters=True)
if global_rank == 0:
event_writer = SummaryWriter(args.logdir)
event_writer.add_text('args', str(args))
# test checkpoint writing
if args.checkpoint_each_epoch:
logger.info(f'Saving checkpoint for epoch {epoch}')
util.dist_save_checkpoint(model, optimizer, args.logdir, suffix=f'{0}')
# Loop over epochs.
train_step = 0
train_loss = 0
last_log_step = 0
best_val_loss = None
va_iter, te_iter = [
corpus.get_dist_iterator(split,
global_rank,
max_rank,
args.batch_size * 2,
args.tgt_len,
device=device,
ext_len=args.ext_len)
for split in ('valid', 'test')
]
# At any point you can hit Ctrl + C to break out of training early.
try:
for epoch in itertools.count(start=1):
train(va_iter, optimizer, scheduler)
except KeyboardInterrupt:
logger.info('-' * 100)
logger.info('Exiting from training early')
except StopIteration:
pass
# Eval one more time.
evaluate_and_log(optimizer, va_iter, 'val', train_step=-1)
# Load the best saved model.
logger.info("Loading best checkpoint")
model_file = os.path.join(args.logdir, 'model-best.pt')
if os.path.exists(model_file):
with open(model_file, 'rb') as model_f:
with timeit('load'):
if args.local:
model = torch.load(model_f)
else:
model = torch.load(model_f,
map_location=lambda storage, loc:
storage.cuda(args.local_rank))
model = DistributedDataParallel(
model,
device_ids=[args.local_rank],
output_device=args.local_rank)
else:
logger.warn('no model file, using current model for loss')
# Run on test data.
evaluate_and_log(optimizer, te_iter, 'test', -1)
sum_kl_loss = keras.backend.sum(kl_loss, axis=0)
sum_g_loss = keras.backend.sum(g_loss, axis=0)
sum_g_loss = sum_g_loss * alpha #This is basically a loss penalty
loss = sum_g_loss + sum_kl_loss
return loss
#Model: define inputs and outputs
model = Model(inputs=[in_1, in_2, in_3], outputs=out_vals) #probabilities)#
opt = optimizers.Adam(
clipnorm=1.,
lr=lrate) #remove clipnorm and add loss penalty - clipnorm works better
model.compile(loss=bin_loss, optimizer=opt)
if find_lr == True:
lr_finder = LRFinder(model)
X_train = [X1_train, X2_train, X3_train]
lr_finder.find(X_train,
y_train,
start_lr=0.00000001,
end_lr=1,
batch_size=batch_size,
epochs=1)
losses = lr_finder.losses
lrs = lr_finder.lrs
l_l = np.asarray([lrs, losses])
np.savetxt(out_dir + 'lrs_losses.txt', l_l)
num_epochs = 0
def train_loop(folds, fold):
if CFG.device == 'GPU':
LOGGER.info(f"========== fold: {fold} training ==========")
# ====================================================
# loader
# ====================================================
trn_idx = folds[folds['fold'] != fold].index
val_idx = folds[folds['fold'] == fold].index
train_folds = folds.loc[trn_idx].reset_index(drop=True)
valid_folds = folds.loc[val_idx].reset_index(drop=True)
valid_labels = valid_folds[CFG.target_cols].values
train_dataset = TrainDataset(train_folds,
transform=get_transforms(data='train'))
valid_dataset = TrainDataset(valid_folds,
transform=get_transforms(data='valid'))
train_loader = DataLoader(train_dataset,
batch_size=CFG.batch_size,
shuffle=True,
num_workers=CFG.num_workers,
pin_memory=True,
drop_last=True)
valid_loader = DataLoader(valid_dataset,
batch_size=CFG.batch_size * 2,
shuffle=False,
num_workers=CFG.num_workers,
pin_memory=True,
drop_last=False)
# ====================================================
# scheduler
# ====================================================
def get_scheduler(optimizer):
if CFG.scheduler == 'ReduceLROnPlateau':
scheduler = ReduceLROnPlateau(optimizer,
mode='min',
factor=CFG.factor,
patience=CFG.patience,
verbose=True,
eps=CFG.eps)
elif CFG.scheduler == 'CosineAnnealingLR':
scheduler = CosineAnnealingLR(optimizer,
T_max=CFG.T_max,
eta_min=CFG.min_lr,
last_epoch=-1)
elif CFG.scheduler == 'CosineAnnealingWarmRestarts':
scheduler = CosineAnnealingWarmRestarts(optimizer,
T_0=CFG.T_0,
T_mult=1,
eta_min=CFG.min_lr,
last_epoch=-1)
return scheduler
# ====================================================
# model & optimizer
# ====================================================
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
model = CustomModel(CFG.model_name, pretrained=False)
model = torch.nn.DataParallel(model)
model.load_state_dict(
torch.load(f'{CFG.model_name}_student_fold{fold}_best_score.pth',
map_location=torch.device('cpu'))['model'])
# model.load_state_dict(torch.load(f'0.9647/{CFG.model_name}_no_hflip_fold{fold}_best_score.pth', map_location=torch.device('cpu'))['model'])
model.to(device)
# criterion = nn.BCEWithLogitsLoss()
criterion = FocalLoss(alpha=1, gamma=6)
# optimizer = Adam(model.parameters(), lr=CFG.lr, weight_decay=CFG.weight_decay, amsgrad=False)
optimizer = SGD(model.parameters(),
lr=1e-2,
weight_decay=CFG.weight_decay,
momentum=0.9)
find_lr = False
if find_lr:
from lr_finder import LRFinder
lr_finder = LRFinder(model, optimizer, criterion, device=device)
lr_finder.range_test(train_loader,
start_lr=1e-2,
end_lr=1e0,
num_iter=100,
accumulation_steps=1)
fig_name = f'{CFG.model_name}_lr_finder.png'
lr_finder.plot(fig_name)
lr_finder.reset()
return
scheduler = get_scheduler(optimizer)
swa_model = torch.optim.swa_utils.AveragedModel(model)
swa_scheduler = torch.optim.swa_utils.SWALR(optimizer, swa_lr=1e-3)
swa_start = 9
# ====================================================
# loop
# ====================================================
best_score = 0.
best_loss = np.inf
for epoch in range(CFG.epochs):
start_time = time.time()
# train
avg_loss = train_fn(train_loader, model, criterion, optimizer, epoch,
scheduler, device)
# eval
# avg_val_loss, preds, _ = valid_fn(valid_loader, model, criterion, device)
if epoch > swa_start:
swa_model.update_parameters(model)
swa_scheduler.step()
else:
if isinstance(scheduler, ReduceLROnPlateau):
scheduler.step(avg_val_loss)
elif isinstance(scheduler, CosineAnnealingLR):
scheduler.step()
elif isinstance(scheduler, CosineAnnealingWarmRestarts):
scheduler.step()
# scoring
avg_val_loss, preds, _ = valid_fn(valid_loader, model, criterion,
device)
score, scores = get_score(valid_labels, preds)
elapsed = time.time() - start_time
LOGGER.info(
f'Epoch {epoch+1} - avg_train_loss: {avg_loss:.4f} avg_val_loss: {avg_val_loss:.4f} time: {elapsed:.0f}s'
)
LOGGER.info(
f'Epoch {epoch+1} - Score: {score:.4f} Scores: {np.round(scores, decimals=4)}'
)
if score > best_score:
best_score = score
LOGGER.info(
f'Epoch {epoch+1} - Save Best Score: {best_score:.4f} Model')
torch.save({'model': model.state_dict()}, OUTPUT_DIR +
f'{CFG.model_name}_no_hflip_fold{fold}_best_score.pth')
# if avg_val_loss < best_loss:
# best_loss = avg_val_loss
# LOGGER.info(f'Epoch {epoch+1} - Save Best Loss: {best_loss:.4f} Model')
# torch.save({'model': model.state_dict(),
# 'preds': preds},
# OUTPUT_DIR+f'{CFG.model_name}_fold{fold}_best_loss.pth')
torch.optim.swa_utils.update_bn(train_loader, swa_model)
avg_val_loss, preds, _ = valid_fn(valid_loader, swa_model, criterion,
device)
score, scores = get_score(valid_labels, preds)
LOGGER.info(f'Save swa Score: {score:.4f} Model')
torch.save({'model': swa_model.state_dict()},
OUTPUT_DIR + f'swa_{CFG.model_name}_fold{fold}_{score:.4f}.pth')
# if CFG.nprocs != 8:
# check_point = torch.load(OUTPUT_DIR+f'{CFG.model_name}_fold{fold}_best_score.pth')
# for c in [f'pred_{c}' for c in CFG.target_cols]:
# valid_folds[c] = np.nan
# try:
# valid_folds[[f'pred_{c}' for c in CFG.target_cols]] = check_point['preds']
# except:
# pass
return
class Trainer:
def __init__(self,
model,
criterion,
optimizer,
train_loader,
val_loader=None,
name="experiment",
experiments_dir="runs",
save_dir=None,
div_lr=1):
self.device = device()
self.model = model.to(self.device)
self.criterion = criterion
self.optimizer = optimizer
self.train_loader = train_loader
self.val_loader = val_loader
self.div_lr = div_lr
self.update_lr(self.optimizer.defaults['lr'])
self._epoch_count = 0
self._best_loss = None
self._best_acc = None
if save_dir is None:
save_dir = f"{self.get_num_dir(experiments_dir):04d}-{get_git_hash()}-{name}"
self._save_dir = os.path.join(experiments_dir, save_dir)
self.writer = Logger(self._save_dir)
atexit.register(self.cleanup)
def train(self, epochs=1):
for epoch in range(epochs):
self._epoch_count += 1
print("\n----- epoch ", self._epoch_count, " -----")
train_loss, train_acc = self._train_epoch()
if self.val_loader:
val_loss, val_acc = self._validate_epoch()
if self._best_loss is None or val_loss < self._best_loss:
self.save_checkpoint('best_model')
self._best_loss = val_loss
print("new best val loss!")
if self._best_acc is None or val_acc > self._best_acc:
self.save_checkpoint('best_model_acc')
self._best_acc = val_acc
print("new best val acc!")
def test(self, test_loader):
self.model.eval()
running_loss = 0
running_acc = 0
for iter, (inputs, targets) in enumerate(tqdm(test_loader)):
inputs = inputs.to(device())
targets = targets.to(device())
with torch.set_grad_enabled(False):
outputs = self.model(inputs)
batch_loss = self.criterion(outputs, targets)
batch_acc = accuracy(outputs, targets)
running_loss += batch_loss.item()
running_acc += batch_acc.item()
epoch_loss = running_loss / len(test_loader)
epoch_acc = running_acc / len(test_loader)
print(f"test loss: {epoch_loss:.5f} test acc: {epoch_acc:.5f}")
return epoch_loss, epoch_acc
def train_one_cycle(self, epochs=1, lr=None):
if lr is None:
lr = self.optimizer.defaults['lr']
self.onecycle = OneCycle(len(self.train_loader) * epochs, lr)
self.train(epochs)
self.onecycle = None
def _train_epoch(self, save_histogram=False):
self.model.train()
running_loss = 0
running_acc = 0
for iter, (inputs, targets) in enumerate(tqdm(self.train_loader)):
inputs = inputs.to(device())
targets = targets.to(device())
if self.onecycle is not None:
lr, mom = next(self.onecycle)
self.update_lr(lr)
self.update_mom(mom)
with torch.set_grad_enabled(True):
outputs = self.model(inputs)
batch_loss = self.criterion(outputs, targets)
batch_acc = accuracy(outputs, targets)
batch_loss.backward()
self.optimizer.step()
self.optimizer.zero_grad()
running_loss += batch_loss.item()
running_acc += batch_acc.item()
if self.log_every(iter):
self.writer.add_scalars(
"loss", {"train_loss": running_loss / float(iter + 1)},
(self._epoch_count - 1) * len(self.train_loader) + iter)
self.writer.add_scalars(
"acc", {"train_acc": running_acc / float(iter + 1)},
(self._epoch_count - 1) * len(self.train_loader) + iter)
epoch_loss = running_loss / len(self.train_loader)
epoch_acc = running_acc / len(self.train_loader)
print(f"train loss: {epoch_loss:.5f} train acc: {epoch_acc:.5f}")
return epoch_loss, epoch_acc
def _validate_epoch(self):
self.model.eval()
running_loss = 0
running_acc = 0
for iter, (inputs, targets) in enumerate(tqdm(self.val_loader)):
inputs = inputs.to(device())
targets = targets.to(device())
with torch.set_grad_enabled(False):
outputs = self.model(inputs)
batch_loss = self.criterion(outputs, targets)
batch_acc = accuracy(outputs, targets)
running_loss += batch_loss.item()
running_acc += batch_acc.item()
if self.log_every(iter):
self.writer.add_scalars(
"loss", {"val_loss": running_loss / float(iter + 1)},
(self._epoch_count - 1) * len(self.val_loader) + iter)
self.writer.add_scalars(
"acc", {"val_acc": running_acc / float(iter + 1)},
(self._epoch_count - 1) * len(self.val_loader) + iter)
epoch_loss = running_loss / len(self.val_loader)
epoch_acc = running_acc / len(self.val_loader)
print(f"val loss: {epoch_loss:.5f} val acc: {epoch_acc:.5f}")
return epoch_loss, epoch_acc
def get_num_dir(self, path):
num_dir = len(os.listdir(path))
return num_dir
def save_checkpoint(self, fname):
path = os.path.join(self._save_dir, fname)
torch.save(
dict(
epoch=self._epoch_count,
best_loss=self._best_loss,
best_acc=self._best_acc,
model=self.model.state_dict(),
optimizer=self.optimizer.state_dict(),
), path)
def load_checkpoint(self, fname):
path = os.path.join(self._save_dir, fname)
checkpoint = torch.load(path,
map_location=lambda storage, loc: storage)
self._epoch_count = checkpoint['epoch']
self.model.load_state_dict(checkpoint['model'])
self.optimizer.load_state_dict(checkpoint['optimizer'])
def log_every(self, i):
return (i % 100) == 0
def update_lr(self, lr):
n = len(self.optimizer.param_groups) - 1
for i, g in enumerate(self.optimizer.param_groups):
g['lr'] = lr / (self.div_lr**(n - i))
def update_mom(self, mom):
keys = self.optimizer.param_groups[0].keys()
for g in self.optimizer.param_groups:
if 'momentum' in g.keys():
g['momentum'] = mom
elif 'betas' in g.keys():
g['betas'] = mom if isinstance(mom, tuple) else (mom,
g['betas'][1])
else:
raise ValueError
def find_lr(self, start_lr=1e-7, end_lr=100, num_iter=100):
optimizer_state = self.optimizer.state_dict()
self.update_lr(start_lr)
self.lr_finder = LRFinder(self.model, self.optimizer, self.criterion,
self.device)
self.lr_finder.range_test(self.train_loader,
end_lr=end_lr,
num_iter=num_iter)
self.optimizer.load_state_dict(optimizer_state)
self.lr_finder.plot()
def cleanup(self):
copy_runpy(self._save_dir)
path = os.path.join(self._save_dir, "./all_scalars.json")
self.writer.export_scalars_to_json(path)
self.writer.close()
def main_loop():
util.cancel_shutdown()
losses = []
args = g.args
if not args.local:
g.logger.info(
f'Distributed initializing process group with '
f'{args.dist_backend}, {args.dist_url}, {util.get_world_size()}')
dist.init_process_group(
backend=args.dist_backend,
#init_method=args.dist_url,
#world_size=util.get_world_size()
)
assert (util.get_world_size() == dist.get_world_size())
g.logger.info(
f"Distributed: success ({args.local_rank}/{dist.get_world_size()})"
)
g.logger.info("creating new model")
g.state = TrainState(args)
g.state.model = MemTransformerLM(g.ntokens,
args.n_layer,
args.n_head,
args.d_model,
args.d_head,
args.d_inner,
args.dropout,
args.dropatt,
tie_weight=args.tied,
d_embed=args.d_embed,
div_val=args.div_val,
tie_projs=g.tie_projs,
pre_lnorm=args.pre_lnorm,
tgt_len=args.tgt_len,
ext_len=args.ext_len,
mem_len=args.mem_len,
cutoffs=g.cutoffs,
same_length=args.same_length,
attn_type=args.attn_type,
clamp_len=args.clamp_len,
sample_softmax=args.sample_softmax,
freeze_below=args.freeze_below)
g.state.model.to(g.device)
optimizer_setup(g.state)
if args.checkpoint:
if args.checkpoint_secondary:
g.logger.info(f"restoring extra checkpoint")
util.restore_from_checkpoint(g.state.model, g.state.optimizer,
args.checkpoint_secondary,
args.optim_state_dict)
g.logger.info(f"Restoring model from {args.checkpoint}" +
f" and optimizer from {args.optim_state_dict}" if args.
optim_state_dict else "")
util.restore_from_checkpoint(g.state.model, g.state.optimizer,
args.checkpoint, args.optim_state_dict)
else:
g.state.model.apply(weights_init)
# ensure embedding init is not overridden by out_layer in case of weight sharing
g.state.model.word_emb.apply(weights_init)
model: MemTransformerLM = g.state.model
optimizer = g.state.optimizer
if g.state.args.fp16:
model = FP16_Module(model)
optimizer = FP16_Optimizer(
optimizer,
static_loss_scale=g.state.args.static_loss_scale,
dynamic_loss_scale=g.state.args.dynamic_loss_scale,
dynamic_loss_args={'init_scale': 2**16},
verbose=False)
# log model info
# n_all_param = sum([p.nelement() for p in model.parameters()])
# log_tb('sizes/params', n_all_param)
# n_nonemb_param = sum([p.nelement() for p in model.layers.parameters()])
# log_tb('sizes/non_emb_params', n_nonemb_param)
# g.logger.info('params %s non_emb_params %s', n_all_param, n_nonemb_param)
# scheduler
if args.scheduler == 'cosine':
# Divide by 1e6 for numerical stability.
g.state.scheduler = optim.lr_scheduler.CosineAnnealingLR(
optimizer, args.max_tokens // 1e6, eta_min=args.eta_min)
elif args.scheduler == 'finder':
g.state.scheduler: LRFinder = LRFinder(optimizer,
args.max_tokens,
init_value=args.lr / 1e3)
else:
assert args.scheduler == 'constant'
g.state.scheduler = util.NoOp()
# Setup distributed model
if args.local:
model = nn.DataParallel(model, dim=1)
else:
# Uncomment find_unused_parameters and upgrade to torch 1.1 for adaptive embedding.
model = DistributedDataParallel(
model, device_ids=[args.local_rank],
output_device=args.local_rank) # , find_unused_parameters=True)
if util.get_global_rank() == 0:
if not args.test:
wandb.config.update(vars(args))
# wandb.watch(model)
g.event_writer.add_text('args', str(args)) # TODO: replace with log_tb
accumulated_loss = 0
# At any point you can hit Ctrl + C to break out of training early.
try:
for epoch in itertools.count(start=g.state.last_epoch):
print(f"epoch -- {epoch}, token_count -- {g.state.token_count}")
model.train()
log_tb('sizes/batch_size', args.batch_size)
log_tb('sizes/seq_size', args.tgt_len)
if g.state.partial_epoch:
# reuse previously loaded tr_iter and states
assert g.state.tr_iter is not None
assert g.state.mems is not None
else:
g.state.tr_iter = g.corpus.get_dist_iterator(
'train',
rank=util.get_global_rank(),
max_rank=util.get_world_size(),
bsz=args.batch_size,
bptt=args.tgt_len,
device=g.device,
ext_len=args.ext_len,
skip_files=g.args.skip_files)
g.state.mems = tuple()
g.state.last_epoch = epoch
log_start_time = time.time()
tokens_per_epoch = 0
for batch, (data, target, seq_len) in enumerate(g.state.tr_iter):
# assert seq_len == data.shape[0]
# for i in range(1, data.shape[0]):
# assert torch.all(torch.eq(data[i], target[i - 1]))
# break
# print(g.state.token_count, data)
if g.state.train_step % args.eval_interval == 0:
evaluate_and_log(model,
g.va_iter,
'val_short-mem-1',
generate_text=False,
reset_mems_interval=1)
evaluate_and_log(model,
g.va_iter,
'val_short-mem-2',
generate_text=False,
reset_mems_interval=2)
evaluate_and_log(model,
g.va_iter,
'val_short-mem-3',
generate_text=False,
reset_mems_interval=3)
evaluate_and_log(model, g.va_iter, 'val')
if g.va_custom_iter:
evaluate_and_log(g.state.model,
g.va_custom_iter,
g.args.valid_custom,
generate_text=False)
batch_total = torch.tensor(data.shape[1]).to(g.device)
if args.local: # TODO(y): factor out (need way to see if dist was inited)
batch_total = batch_total.sum()
else:
batch_total = util.dist_sum_tensor(
batch_total) # global batch size
batch_total = util.toscalar(batch_total)
should_log = (g.state.train_step < args.verbose_log_steps) or \
(g.state.train_step + 1) % args.log_interval == 0
model.zero_grad()
ret = model(data, target, *g.state.mems)
loss, g.state.mems = ret[0], ret[1:]
loss: torch.Tensor = loss.float().mean().type_as(loss)
with timeit('backwards', noop=not should_log):
if args.fp16:
optimizer.backward(loss)
else:
loss.backward()
loss0 = util.toscalar(loss)
util.record('loss', loss0)
util.record('params', torch.sum(util.flat_param(model)).item())
losses.append(loss0)
accumulated_loss += loss0
if args.fp16:
optimizer.clip_master_grads(args.clip)
else:
torch.nn.utils.clip_grad_norm_(model.parameters(),
args.clip)
# step-wise learning rate annealing
if hasattr(optimizer, 'overflow') and optimizer.overflow:
g.logger.info("skipped iteration")
else:
if args.scheduler in ['cosine', 'constant', 'dev_perf']:
# linear warmup stage
if g.state.token_count < args.warmup_tokens:
curr_lr = args.lr * float(
g.state.token_count) / args.warmup_tokens
optimizer.param_groups[0]['lr'] = curr_lr
elif args.scheduler == 'cosine':
# Divide by 1e6 for numerical stability.
g.state.scheduler.step(g.state.token_count //
1000 // 1000)
else:
g.state.scheduler.step(g.state.token_count)
optimizer.step()
g.state.train_step += 1
consumed_tokens = data.shape[0] * data.shape[1]
world_size = int(os.environ.get("WORLD_SIZE", "8"))
if world_size > 8: # correction factor for multiple machines
consumed_tokens = consumed_tokens * (world_size // 8)
tokens_per_epoch += consumed_tokens
g.state.token_count += consumed_tokens
g.token_count = g.state.token_count
if g.state.token_count >= args.max_tokens:
g.state.partial_epoch = True
raise StopIteration # break out of parent train loop
if should_log:
elapsed_time = time.time() - log_start_time
elapsed_steps = g.state.train_step - g.state.last_log_step
# compute average loss over last logging interval
cur_loss = accumulated_loss / elapsed_steps
cur_loss_mean = util.dist_mean(cur_loss)
log_str = f'| epoch {epoch:3d} step {g.state.train_step:>8d} ' \
f'| {batch:>6d} batches ' \
f'| lr {optimizer.param_groups[0]["lr"]:.3g} ' \
f'| ms/batch {elapsed_time * 1000 / elapsed_steps:5.2f} ' \
f'| loss {cur_loss:5.2f}'
if args.dataset in ['enwik8', 'text8']:
log_str += f' | bpc {cur_loss / math.log(2):9.5f}'
else:
log_str += f' | ppl {math.exp(cur_loss):9.3f}'
g.logger.info(log_str)
log_tb('learning/epoch', epoch)
log_tb('_loss', cur_loss_mean) # the most important thing
log_tb('learning/loss', cur_loss_mean)
log_tb('learning/ppl', math.exp(cur_loss_mean))
# currently step timings are not synchronized in multi-machine
# case (see #4). Can add torch.distributed.barrier() to get
# more accurate timings, but this may add slowness.
log_tb('times/step', 1000 * elapsed_time / elapsed_steps)
current_lr = optimizer.param_groups[0]['lr']
log_tb('learning/lr', current_lr)
# 32 is the "canonical" batch size
linear_scaling_factor = batch_total / 32 # TODO(y): merge logic from master
log_tb('learning/base_lr',
current_lr / linear_scaling_factor)
if args.optim == 'lamb':
log_lamb_rs(optimizer, g.event_writer,
g.state.token_count)
time_per_batch = elapsed_time / elapsed_steps
time_per_sample = time_per_batch / args.batch_size
time_per_token = time_per_sample / args.tgt_len
log_tb('times/batches_per_sec', 1 / time_per_batch)
log_tb('times/samples_per_sec', 1 / time_per_sample)
log_tb('times/tokens_per_sec', 1 / time_per_token)
if str(g.device) == 'cuda':
log_tb("memory/allocated_gb",
torch.cuda.memory_allocated() / 1e9)
log_tb("memory/max_allocated_gb",
torch.cuda.max_memory_allocated() / 1e9)
log_tb("memory/cached_gb",
torch.cuda.memory_cached() / 1e9)
log_tb("memory/max_cached_gb",
torch.cuda.max_memory_cached() / 1e9)
accumulated_loss = 0
log_start_time = time.time()
g.state.last_log_step = g.state.train_step
if args.checkpoint_each_epoch:
g.logger.info(f'Saving checkpoint for epoch {epoch}')
util.dist_save_checkpoint(model,
optimizer,
args.logdir,
suffix=f'{epoch}')
if tokens_per_epoch == 0:
logging.info("Zero tokens in last epoch, breaking")
break
g.state.partial_epoch = False
except KeyboardInterrupt:
g.logger.info('-' * 100)
g.logger.info('Exiting from training early')
except StopIteration:
pass
return losses
factor=0.5,
patience=4,
min_lr=0.000001,
cooldown=3,
verbose=1)
stop_on_nan = keras.callbacks.TerminateOnNaN()
# LR finder
if opt.find_lr:
# pre-train to avoid model being too far away from interesting range
history = model.fit_generator(gen_x_train,
epochs=2,
verbose=1,
callbacks=[clr])
lr_finder = LRFinder(model)
lr_finder.find_generator(gen_x_train, 0.00001, 1.0, 5)
lr_finder.plot_loss()
import pdb
pdb.set_trace()
# Run training
if not opt.notrain:
# Train classifier
history = model.fit_generator(
gen_x_train,
epochs=epochs,
verbose=1, # switch to 1 for more verbosity
callbacks=[early_stopping, clr,
stop_on_nan], #, reduce_lr], #, lr, reduce_lr],
# callbacks=[early_stopping, reduce_lr], #, lr, reduce_lr],
def main_loop():
util.cancel_shutdown()
losses = []
args = g.args
if not args.local:
g.logger.info(
f'Distributed initializing process group with {args.dist_backend}, {args.dist_url}, {util.get_world_size()}')
dist.init_process_group(backend=args.dist_backend,
init_method=args.dist_url,
world_size=util.get_world_size())
assert (util.get_world_size() == dist.get_world_size())
g.logger.info(f"Distributed: success ({args.local_rank}/{dist.get_world_size()})")
if args.load_state_fn:
g.state = load_state(args.load_state_fn)
g.logger.info(f"Restoring training from {args.load_state_fn}")
else:
g.logger.info("creating new model")
g.state = TrainState(args)
g.state.model = MemTransformerLM(g.ntokens, args.n_layer, args.n_head, args.d_model,
args.d_head, args.d_inner, args.dropout, args.dropatt,
tie_weight=args.tied, d_embed=args.d_embed, div_val=args.div_val,
tie_projs=g.tie_projs, pre_lnorm=args.pre_lnorm, tgt_len=args.tgt_len,
ext_len=args.ext_len, mem_len=args.mem_len, cutoffs=g.cutoffs,
same_length=args.same_length, attn_type=args.attn_type,
clamp_len=args.clamp_len, sample_softmax=args.sample_softmax)
if args.checkpoint:
util.restore_from_checkpoint(g.state.model, checkpoint_fn=args.checkpoint)
else:
g.state.model.apply(weights_init)
g.state.model.word_emb.apply(
weights_init) # ensure embedding init is not overridden by out_layer in case of weight sharing
g.state.model.to(g.device)
optimizer_setup(g.state)
model: MemTransformerLM = g.state.model
optimizer = g.state.optimizer
# log model info
# n_all_param = sum([p.nelement() for p in model.parameters()])
# log_tb('sizes/params', n_all_param)
# n_nonemb_param = sum([p.nelement() for p in model.layers.parameters()])
# log_tb('sizes/non_emb_params', n_nonemb_param)
# g.logger.info('params %s non_emb_params %s', n_all_param, n_nonemb_param)
# scheduler
if not g.args.load_state_fn:
if args.scheduler == 'cosine':
# Divide by 1e6 for numerical stability.
g.state.scheduler = optim.lr_scheduler.CosineAnnealingLR(optimizer, args.max_tokens // 1e6,
eta_min=args.eta_min)
elif args.scheduler == 'finder':
g.state.scheduler: LRFinder = LRFinder(optimizer, args.max_tokens, init_value=args.lr / 1e3)
else:
assert args.scheduler == 'constant'
g.state.scheduler = util.NoOp()
# Setup distributed model
if args.local:
model = nn.DataParallel(model, dim=1)
else:
# Uncomment find_unused_parameters and upgrade to torch 1.1 for adaptive embedding.
model = DistributedDataParallel(model, device_ids=[args.local_rank],
output_device=args.local_rank) # , find_unused_parameters=True)
if util.get_global_rank() == 0:
if not args.test:
wandb.config.update(vars(args))
# wandb.watch(model)
g.event_writer.add_text('args', str(args)) # TODO: replace with log_tb
accumulated_loss = 0
# At any point you can hit Ctrl + C to break out of training early.
try:
for epoch in itertools.count(start=g.state.last_epoch):
print(f"epoch -- {epoch}, token_count -- {g.state.
def main(args):
# load train data into ram
# data_path = '/mntlong/lanl_comp/data/'
file_dir = os.path.dirname(__file__)
data_path = os.path.abspath(os.path.join(file_dir, os.path.pardir, 'data'))
train_info_path = os.path.join(data_path, 'train_info.csv')
train_data_path = os.path.join(data_path, 'train_compressed.npz')
train_info = pd.read_csv(train_info_path, index_col='Unnamed: 0')
train_info['exp_len'] = train_info['indx_end'] - train_info['indx_start']
train_signal = np.load(train_data_path)['signal']
train_quaketime = np.load(train_data_path)['quake_time']
# В валидацию берем 2 последних волны (части эксперимента)
val_start_idx = train_info.iloc[-2, :]['indx_start']
val_signal = train_signal[val_start_idx:]
val_quaketime = train_quaketime[val_start_idx:]
train_signal = train_signal[:val_start_idx]
train_quaketime = train_quaketime[:val_start_idx]
# training params
large_ws = 1500000
overlap_size = int(large_ws * 0.5)
small_ws = 150000
num_bins = 17
cpc_meta_model = models.CPCv1(out_size=num_bins - 1)
# logs_path = '/mntlong/scripts/logs/'
logs_path = os.path.abspath(os.path.join(file_dir, os.path.pardir, 'logs'))
current_datetime = datetime.today().strftime('%b-%d_%H-%M-%S')
log_writer_path = os.path.join(logs_path, 'runs',
current_datetime + '_' + args.model_name)
train_dataset = data.SignalCPCDataset(
train_signal,
train_quaketime,
num_bins=num_bins,
idxs_wave_end=train_info['indx_end'].values,
large_ws=large_ws,
overlap_size=overlap_size,
small_ws=small_ws)
val_dataset = data.SignalCPCDataset(
val_signal,
val_quaketime,
num_bins=num_bins,
idxs_wave_end=train_info['indx_end'].values,
large_ws=large_ws,
overlap_size=overlap_size,
small_ws=small_ws)
print('x_t size:', train_dataset[0][0].size())
train_loader = DataLoader(dataset=train_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=5,
pin_memory=True)
val_loader = DataLoader(dataset=val_dataset,
batch_size=args.batch_size,
shuffle=False,
num_workers=5,
pin_memory=True)
if args.find_lr:
from lr_finder import LRFinder
optimizer = optim.Adam(cpc_meta_model.parameters(), lr=1e-6)
lr_find = LRFinder(cpc_meta_model,
optimizer,
criterion=None,
is_cpc=True,
device='cuda')
lr_find.range_test(train_loader,
end_lr=2,
num_iter=75,
step_mode='exp')
best_lr = lr_find.get_best_lr()
lr_find.plot()
lr_find.reset()
print('best lr found: {:.2e}'.format(best_lr))
else:
best_lr = 3e-4
# sys.exit()
# model_path = os.path.join(logs_path, 'cpc_no_target_head_cont_last_state.pth')
# cpc_meta_model.load_state_dict(torch.load(model_path)['model_state_dict'])
# cpc_meta_model.to(torch.device('cuda'))
optimizer = optim.Adam(cpc_meta_model.parameters(), lr=best_lr)
# optimizer.load_state_dict(torch.load(model_path)['optimizer_state_dict'])
lr_sched = optim.lr_scheduler.ReduceLROnPlateau(optimizer,
factor=0.5,
patience=3,
threshold=0.005)
log_writer = SummaryWriter(log_writer_path)
utils.train_cpc_model(cpc_meta_model=cpc_meta_model,
optimizer=optimizer,
num_bins=num_bins,
lr_scheduler=lr_sched,
train_loader=train_loader,
val_loader=val_loader,
num_epochs=args.num_epochs,
model_name=args.model_name,
logs_path=logs_path,
log_writer=log_writer)
def main(args):
np.random.seed(432)
torch.random.manual_seed(432)
try:
os.makedirs(args.outpath)
except OSError:
pass
experiment_path = utils.get_new_model_path(args.outpath)
print(experiment_path)
train_writer = SummaryWriter(os.path.join(experiment_path, 'train_logs'))
val_writer = SummaryWriter(os.path.join(experiment_path, 'val_logs'))
trainer = train.Trainer(train_writer, val_writer)
# todo: add config
train_transform = data.build_preprocessing()
eval_transform = data.build_preprocessing()
trainds, evalds = data.build_dataset(args.datadir, None)
trainds.transform = train_transform
evalds.transform = eval_transform
model = models.resnet34()
opt = torch.optim.Adam(model.parameters(), lr=1e-8)
trainloader = DataLoader(trainds,
batch_size=args.batch_size,
shuffle=True,
num_workers=8,
pin_memory=True)
evalloader = DataLoader(evalds,
batch_size=args.batch_size,
shuffle=False,
num_workers=16,
pin_memory=True)
#find lr fast ai
criterion = torch.nn.BCEWithLogitsLoss()
lr_finder = LRFinder(model, opt, criterion, device="cuda")
# lr_finder.range_test(trainloader, val_loader=evalloader, end_lr=1, num_iter=10, step_mode="exp")
lr_finder.range_test(trainloader,
end_lr=100,
num_iter=100,
step_mode="exp")
#plot graph fast ai
skip_start = 6
skip_end = 3
lrs = lr_finder.history["lr"]
losses = lr_finder.history["loss"]
grad_norm = lr_finder.history["grad_norm"]
# ind = grad_norm.index(min(grad_norm))
# opt_lr = lrs[ind]
# print('LR with min grad_norm =', opt_lr)
lrs = lrs[skip_start:-skip_end]
losses = losses[skip_start:-skip_end]
fig = plt.figure(figsize=(12, 9))
plt.plot(lrs, losses)
plt.xscale("log")
plt.xlabel("Learning rate")
plt.ylabel("Loss")
train_writer.add_figure('loss_vs_lr', fig)
lr_finder.reset()
# fixed_lr = 1e-3
fixed_lr = 3e-4
opt = torch.optim.Adam(model.parameters(), lr=fixed_lr)
# #new
# lr = 1e-3
# eta_min = 1e-5
# t_max = 10
# opt = torch.optim.Adam(model.parameters(), lr=lr)
# scheduler = CosineAnnealingLR(opt, T_max=t_max, eta_min=eta_min)
# #new
# one cycle for 5 ehoches
# scheduler = CosineAnnealingLR(opt, 519*4, eta_min=1e-4)
scheduler = CosineAnnealingLR(opt, args.epochs)
# scheduler = CosineAnnealingLR(opt, 519, eta_min=1e-5)
# scheduler = StepLR(opt, step_size=3, gamma=0.1)
state_list = []
for epoch in range(args.epochs):
# t = epoch / args.epochs
# lr = np.exp((1 - t) * np.log(lr_begin) + t * np.log(lr_end))
# выставляем lr для всех параметров
trainer.train_epoch(model, opt, trainloader, fixed_lr, scheduler)
# trainer.train_epoch(model, opt, trainloader, 3e-4, scheduler)
# trainer.train_epoch(model, opt, trainloader, 9.0451e-4, scheduler)
metrics = trainer.eval_epoch(model, evalloader)
state = dict(
epoch=epoch,
model_state_dict=model.state_dict(),
optimizer_state_dict=opt.state_dict(),
loss=metrics['loss'],
lwlrap=metrics['lwlrap'],
global_step=trainer.global_step,
)
state_copy = copy.deepcopy(state)
state_list.append(state_copy)
export_path = os.path.join(experiment_path, 'last.pth')
torch.save(state, export_path)
# save the best path
best_export_path = os.path.join(experiment_path, 'best.pth')
max_lwlrap = 0
max_lwlrap_ind = 0
for i in range(args.epochs):
if state_list[i]['lwlrap'] > max_lwlrap:
max_lwlrap = state_list[i]['lwlrap']
max_lwlrap_ind = i
best_state = state_list[max_lwlrap_ind]
torch.save(best_state, best_export_path)
train_loader = DataLoader(train_ds,batch_size=batch_size, sampler=BalanceClassSampler(labels=train_ds.get_labels(), mode="downsampling"), shuffle=False, num_workers=4)
else:
train_loader = DataLoader(train_ds,batch_size=batch_size, shuffle=True, num_workers=4)
plist = [
{'params': model.backbone.parameters(), 'lr': learning_rate/50},
{'params': model.meta_fc.parameters(), 'lr': learning_rate},
# {'params': model.metric_classify.parameters(), 'lr': learning_rate},
]
optimizer = optim.Adam(plist, lr=learning_rate)
# lr_reduce_scheduler = torch.optim.lr_scheduler.ReduceLROnPlateau(optimizer, mode='min', factor=0.5, patience=patience, verbose=True, threshold=1e-4, threshold_mode='rel', cooldown=0, min_lr=1e-7, eps=1e-08)
# cyclic_scheduler = torch.optim.lr_scheduler.CyclicLR(optimizer, base_lr=learning_rate, max_lr=10*learning_rate, step_size_up=2000, step_size_down=2000, mode='triangular', gamma=1.0, scale_fn=None, scale_mode='cycle', cycle_momentum=False, base_momentum=0.8, max_momentum=0.9, last_epoch=-1)
criterion = criterion_margin_focal_binary_cross_entropy
if load_model:
tmp = torch.load(os.path.join(model_dir, model_name+'_loss.pth'))
model.load_state_dict(tmp['model'])
# optimizer.load_state_dict(tmp['optim'])
# lr_reduce_scheduler.load_state_dict(tmp['scheduler'])
# cyclic_scheduler.load_state_dict(tmp['cyclic_scheduler'])
# amp.load_state_dict(tmp['amp'])
prev_epoch_num = tmp['epoch']
best_valid_loss = tmp['best_loss']
del tmp
print('Model Loaded!')
# model, optimizer = amp.initialize(model, optimizer, opt_level='O1')
lr_finder = LRFinder(model, optimizer, criterion, device="cuda")
lr_finder.range_test(train_loader, end_lr=100, num_iter=500, accumulation_steps=accum_step)
lr_finder.plot() # to inspect the loss-learning rate graph
xval[cols_to_scale] = ss.transform(xval[cols_to_scale])
yval = yval.values
xtrain, xval = xtrain.values, xval.values
# %%
nn = keras.Sequential([
keras.layers.Dense(units=15, activation='relu'),
keras.layers.Dense(units=15, activation='relu'),
keras.layers.Dense(units=1, activation='linear'),
])
nn.compile(keras.optimizers.SGD(lr=0.001), 'MAE', metrics=['MAE'])
nn.build((None, xtrain.shape[1]))
# Find optimal learning rate. Use the one with the steepest descent of loss (not minimum)
lrf = LRFinder(0.01, 1)
nn.fit(xtrain,
ytrain,
validation_data=(xval, yval),
epochs=5,
batch_size=32,
callbacks=[lrf])
# %%
from CLRCallback import CyclicLR
clr = CyclicLR((10**-1) / 3, 10**-1)
h = nn.fit(xtrain,
ytrain,
validation_data=(xval, yval),
epochs=25,
batch_size=32,
shuffle=True, num_workers=4)
for x in ['train', 'val']}
dataset_sizes = {x: len(image_datasets[x]) for x in ['train', 'val']}
class_names = image_datasets['train'].classes
device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
# Finetuning the convnet
model = models.resnet18(pretrained=True)
num_ftrs = model.fc.in_features
model.fc = nn.Linear(num_ftrs, 2)
model = model.to(device)
criterion = nn.CrossEntropyLoss()
#Select a small learning rate for the start
optimizer_ft = optim.SGD(model.parameters(), lr=1e-5, momentum = 0.9)
lr_finder = LRFinder(model,optimizer_ft, criterion, device="cuda")
#Using the train loss
lr_finder.range_test(dataloaders['train'], end_lr=100,num_iter=1000,step_mode='exp')
lr_finder.plot()
#Using the validation loss
lr_finder.reset()
lr_finder.range_test(dataloaders['train'], val_loader=dataloaders['val'],end_lr=100,num_iter=200,step_mode='exp')
lr_finder.plot(skip_end=0)
