def __init__(self, config: ModelConfig):
"""
Defines the model using the appropriate config class containing all the necessary parameters (activation, loss,
loss, optimizer, training/eval batch size, ...)
:param config: an object of the ModelConfig class.
"""
super(BaseModel, self).__init__()
self._check_config(config)
self._name = config.name
self._set_activation(config.activation)
self._set_normalization(config.normalization)
self._set_loss(config.loss)
self._build_model(config)
self.initialize_params(
config.initializer) # initialize the parameters using the config
if len(list(self.parameters())) == 0:
raise ValueError(
"Model has no parameters defined and optimizer cannot be defined: len(self.parameters) = "
"0. Parameters have to be defined in the _build_model() method."
)
else: # only set the optimizer if some parameters have been already defined
self._set_optimizer(config.optimizer)
self._set_scheduler(config.scheduler)
# define hparams for later logging
self.hparams = config.dict()
self.save_hyperparameters(config.dict())
# define an attribute to hold all the history of train/val/test metrics for later plotting /analysing
self.results = {'training': [], 'validation': [], 'test': []}
def setUp(self) -> None:
config_dict = read_yaml(CONFIG_PATH)
self.input_size = config_dict['architecture']['input_size']
self.base_lr = config_dict['optimizer']['params']['lr']
self.n_warmup_steps = 1
self.batch_size = 128
self.width = config_dict['architecture']['width']
self.L = 3
config_dict['architecture']['n_layers'] = self.L + 1
config_dict['optimizer']['params']['lr'] = self.base_lr
config_dict['scheduler'] = {
'name': 'warmup_switch',
'params': {
'n_warmup_steps': self.n_warmup_steps,
'calibrate_base_lr': True
}
}
self.base_model_config = ModelConfig(config_dict)
self.training_dataset, _ = load_data(download=False, flatten=True)
self.train_data_loader = DataLoader(self.training_dataset,
shuffle=True,
batch_size=self.batch_size)
self.batches = list(self.train_data_loader)
def test_resnet_config_from_file(self):
config = ModelConfig(config_file=self.reset_config_path)
self.assertTrue(config.name == "ResNet")
# architecture
self.assertDictEqual(
{
"input_size": 28,
"n_blocks": 2,
"n_layers": 2,
"kernel_size": 3,
"stride": 1,
"n_channels": 32,
"bias_conv": True,
"fc_dim": 256,
"bias_fc": True,
"output_size": 10
}, config.architecture)
# activation
self.assertTrue(config.activation.name == "relu")
self.assertFalse(hasattr(config.activation, "params"))
# loss
self.assertTrue(config.loss.name == "cross_entropy")
self.assertDictEqual(config.loss.params, {"reduction": "mean"})
# opt
self.assertTrue(config.optimizer.name == "adam")
self.assertDictEqual(config.optimizer.params, {
"lr": 1.0e-4,
"beta1": 0.9,
"beta2": 0.999
})
# norm
self.assertTrue(config.normalization.name == "batch_norm_2d")
self.assertFalse(hasattr(config.normalization, "params"))
def setUp(self) -> None:
config_dict = read_yaml(CONFIG_PATH)
self.base_model_config = ModelConfig(config_dict)
self.width = 0
self.ntk = ntk.FCNTK(self.base_model_config, self.width)
self.ip = ip.FCIP(self.base_model_config, c=0, width=self.width)
self.muP = muP.FCmuP(self.base_model_config, self.width)
def _run_trial(self, idx, seed, k, r, batch_size, n, n_train, d, m):
trial_name = 'trial_{}'.format(idx + 1)
self.trial_dir = os.path.join(self.exp_dir, trial_name)
if not os.path.exists(
self.trial_dir): # run trial only if it doesn't already exist
create_dir(self.trial_dir) # directory to save the trial
self.trial_version = '{}_{}'.format(
self.version, trial_name) # version for TensorBoard
self._set_tb_logger_and_callbacks(
trial_name) # tb logger, checkpoints and early stopping
log_dir = os.path.join(
self.trial_dir,
self.LOG_NAME) # define path to save the logs of the trial
logger = set_up_logger(log_dir)
logger.info('----- Trial {:,} with version {} -----\n'.format(
idx, self.trial_version))
self._log_experiment_info(k, r, batch_size, n, n_train, d, m)
set_random_seeds(seed) # set random seed for the trial
logger.info('Random seed used for the script : {:,}'.format(
self.SEED))
logger.info('Random seed used for the trial : {:,}\n'.format(seed))
config = ModelConfig(
config_dict=self.config_dict
) # define the config as a class to pass to the model
two_layer_net = TwoLayerNet(config,
train_hidden=True) # define the model
logger.info('Number of model parameters : {:,}'.format(
two_layer_net.count_parameters()))
logger.info('Model architecture :\n{}\n'.format(two_layer_net))
# training and validation pipeline
trainer = pl.Trainer(
max_epochs=MAX_EPOCHS,
max_steps=MAX_STEPS,
logger=self.tb_logger,
checkpoint_callback=self.checkpoint_callback,
num_sanity_val_steps=0,
early_stop_callback=self.early_stopping_callback)
trainer.fit(model=two_layer_net,
train_dataloader=self.train_data_loader,
val_dataloaders=self.val_data_loader)
# test pipeline
test_results = trainer.test(model=two_layer_net,
test_dataloaders=self.test_data_loader)
logger.info('Test results :\n{}\n'.format(test_results))
# save all training val and test results to pickle file
with open(os.path.join(self.trial_dir, self.RESULTS_FILE),
'wb') as file:
pickle.dump(two_layer_net.results, file)
def test_named_config_from_dict(self):
config = ModelConfig(config_dict={"name": "Config"})
self.assertTrue(config.name == "Config")
# activation
self.assertTrue(config.activation.name is None)
self.assertFalse(hasattr(config.activation, "params"))
# loss
self.assertTrue(config.loss.name is None)
self.assertFalse(hasattr(config.loss, "params"))
# opt
self.assertTrue(config.optimizer.name is None)
self.assertFalse(hasattr(config.optimizer, "params"))
# norm
self.assertTrue(config.normalization is None)
def test_empty_config_from_file(self):
config = ModelConfig(config_file=self.empty_config_path)
self.assertTrue(config.name == "model")
# activation
self.assertTrue(config.activation.name is None)
self.assertFalse(hasattr(config.activation, "params"))
# loss
self.assertTrue(config.loss.name is None)
self.assertFalse(hasattr(config.loss, "params"))
# opt
self.assertTrue(config.optimizer.name is None)
self.assertFalse(hasattr(config.optimizer, "params"))
# norm
self.assertTrue(config.normalization is None)
def setUp(self) -> None:
config_dict = read_yaml(CONFIG_PATH)
self.input_size = config_dict['architecture']['input_size']
self.base_lr = config_dict['optimizer']['params']['lr']
self.n_warmup_steps = 2
self.width = config_dict['architecture']['width']
self.L = config_dict['architecture']['n_layers'] - 1
config_dict['optimizer']['params']['lr'] = self.base_lr
config_dict['scheduler'] = {'name': 'warmup_switch',
'params': {'n_warmup_steps': self.n_warmup_steps,
'calibrate_base_lr': False}}
self.base_model_config = ModelConfig(config_dict)
self.ipllr = FcIPLLR(self.base_model_config, n_warmup_steps=4)
def setUp(self) -> None:
config_file = os.path.join('../../pytorch/configs',
'wide_two_layer_net.yaml')
with open(config_file, 'r') as stream:
try:
config_dict = yaml.safe_load(stream)
except yaml.YAMLError as e:
raise Exception(
"Exception while reading yaml file {} : {}".format(
config_file, e))
# parameters of the experiment
r, k, self.n, d = 0.5, 3, 700, 20
self.n_train, self.n_val = 256, 256 # n_test = n - (n_train + n_val)
self.version = 'test_new_mac_n={}_d={}_m={}'.\
format(self.n, d, config_dict['architecture']['hidden_layer_dim'])
# config and net
config_dict['architecture']['input_size'] = d
self.config = ModelConfig(config_dict=config_dict)
self.two_layer_net = TwoLayerNet(self.config, train_hidden=True)
# generate data
ds = self._generate_data(k, r, d, self.n)
# define train/val/test data loaders
self._set_data_loaders(ds, self.n, self.n_train, self.n_val)
# define tb logger and callbacks
self.tb_logger = TensorBoardLogger(save_dir=SAVE_DIR,
version=self.version,
name=NAME)
checkpoints_name_template = '{epoch}_{val_accuracy:.3f}_{val_loss:.3f}_{val_auc:.3f}'
checkpoints_path = os.path.join(SAVE_DIR, NAME, self.version,
'checkpoints',
checkpoints_name_template)
self.checkpoint_callback = ModelCheckpoint(filepath=checkpoints_path,
save_top_k=3,
verbose=True,
monitor='val_accuracy',
mode='max',
prefix='')
self.early_stopping_callback = EarlyStopping(monitor='val_loss',
min_delta=1.0e-6,
patience=5,
mode='min')
def setUp(self) -> None:
config_file = os.path.join('../../pytorch/configs', 'wide_two_layer_net.yaml')
with open(config_file, 'r') as stream:
try:
config_dict = yaml.safe_load(stream)
except yaml.YAMLError as e:
raise Exception("Exception while reading yaml file {} : {}".format(config_file, e))
self.config = ModelConfig(config_dict=config_dict)
self.two_layer_net = TwoLayerNet(self.config, train_hidden=True)
r, k, n = 1., 4, 5000
d = config_dict['architecture']['input_size']
data = random.RandomData(k=k, r=r, d=d, n=n)
data.generate_samples()
self.ds = dataset.RandomDataset(data)
self.data_loader = DataLoader(self.ds, shuffle=True, batch_size=BATCH_SIZE)
def setUp(self) -> None:
config_dict = read_yaml(CONFIG_PATH)
L = 4
width = 1024
mean = 1.0
self.input_size = config_dict['architecture']['input_size']
self.base_lr = config_dict['optimizer']['params']['lr']
self.n_warmup_steps = 1
self.width = width
config_dict['architecture']['width'] = width
self.L = L
self.mean = mean
config_dict['architecture']['n_layers'] = L + 1
config_dict['optimizer']['params']['lr'] = self.base_lr
self.base_model_config = ModelConfig(config_dict)
self.base_model_config.initializer.params["mean"] = mean
self.ip_non_centered = StandardFCIP(self.base_model_config)
def setUp(self) -> None:
# define model
config = ModelConfig(
config_file=os.path.join(RESOURCES_DIR, 'resnet_config.yaml'))
self.resnet = ResNetMNIST(config)
# set up train and val data loaders
n_train = int(RATIO_TRAIN * N_SAMPLES)
n_val = N_SAMPLES - n_train
indexes = list(range(N_SAMPLES))
np.random.shuffle(indexes)
train_indexes = indexes[:n_train]
val_indexes = indexes[n_train:]
self.train_data_loader = self.resnet.train_dataloader(
data_dir=DATA_DIR,
download=False,
batch_size=BATCH_SIZE,
indexes=train_indexes)
self.val_data_loader = self.resnet.train_dataloader(
data_dir=DATA_DIR,
download=False,
batch_size=BATCH_SIZE,
indexes=val_indexes)
self.test_dataloader = self.resnet.test_dataloader(
data_dir=DATA_DIR, download=False, batch_size=BATCH_SIZE)
self.tb_logger = TensorBoardLogger(save_dir=SAVE_DIR,
version=version,
name=NAME)
checkpoints_path = os.path.join(
SAVE_DIR, NAME, version, 'checkpoints',
'{epoch}_{val_accuracy:.3f}_{val_loss:.3f}_{val_auc:.3f}')
self.checkpoint_callback = ModelCheckpoint(filepath=checkpoints_path,
save_top_k=3,
verbose=True,
monitor='val_accuracy',
mode='max',
prefix='')
def setUp(self) -> None:
config_dict = read_yaml(CONFIG_PATH)
self.base_model_config = ModelConfig(config_dict)
self.width = 0
self.standard_ip = StandardFCIP(self.base_model_config, self.width)
def setUp(self) -> None:
self.config = ModelConfig(config_file=os.path.join(RESOURCES_DIR, 'resnet_config.yaml'))
def main(activation="relu", base_lr=0.01, batch_size=512, dataset="mnist"):
config_path = os.path.join(CONFIG_PATH, 'fc_ipllr_{}.yaml'.format(dataset))
figures_dir = os.path.join(FIGURES_DIR, dataset)
create_dir(figures_dir)
log_path = os.path.join(figures_dir, 'log_muP_{}.txt'.format(activation))
logger = set_up_logger(log_path)
logger.info('Parameters of the run:')
logger.info('activation = {}'.format(activation))
logger.info('base_lr = {}'.format(base_lr))
logger.info('batch_size = {:,}'.format(batch_size))
logger.info('Random SEED : {:,}'.format(SEED))
logger.info(
'Number of random trials for each model : {:,}'.format(N_TRIALS))
try:
set_random_seeds(SEED) # set random seed for reproducibility
config_dict = read_yaml(config_path)
version = 'L={}_m={}_act={}_lr={}_bs={}'.format(
L, width, activation, base_lr, batch_size)
template_name = 'muP_{}_ranks_{}_' + version
config_dict['architecture']['width'] = width
config_dict['architecture']['n_layers'] = L + 1
config_dict['optimizer']['params']['lr'] = base_lr
config_dict['activation']['name'] = activation
base_model_config = ModelConfig(config_dict)
# Load data & define models
logger.info('Loading data ...')
if dataset == 'mnist':
from utils.dataset.mnist import load_data
elif dataset == 'cifar10':
from utils.dataset.cifar10 import load_data
elif dataset == 'cifar100':
# TODO : add cifar100 to utils.dataset
pass
else:
error = ValueError(
"dataset must be one of ['mnist', 'cifar10', 'cifar100'] but was {}"
.format(dataset))
logger.error(error)
raise error
training_dataset, test_dataset = load_data(download=False,
flatten=True)
train_data_loader = DataLoader(training_dataset,
shuffle=True,
batch_size=batch_size)
batches = list(train_data_loader)
full_x = torch.cat([a for a, _ in batches], dim=0)
full_y = torch.cat([b for _, b in batches], dim=0)
logger.info('Defining models')
base_model_config.scheduler = None
muPs = [FCmuP(base_model_config) for _ in range(N_TRIALS)]
for muP in muPs:
for i, param_group in enumerate(muP.optimizer.param_groups):
if i == 0:
param_group['lr'] = param_group['lr'] * (muP.d + 1)
# save initial models
muPs_0 = [deepcopy(muP) for muP in muPs]
# train model one step
logger.info('Training model a first step (t=1)')
x, y = batches[0]
muPs_1 = []
for muP in muPs:
train_model_one_step(muP, x, y, normalize_first=True)
muPs_1.append(deepcopy(muP))
# train models for a second step
logger.info('Training model a second step (t=2)')
x, y = batches[1]
muPs_2 = []
for muP in muPs:
train_model_one_step(muP, x, y, normalize_first=True)
muPs_2.append(deepcopy(muP))
# set eval mode for all models
for i in range(N_TRIALS):
muPs[i].eval()
muPs_0[i].eval()
muPs_1[i].eval()
muPs_2[i].eval()
logger.info('Storing initial and update matrices')
# define W0 and b0
W0s = []
b0s = []
for muP_0 in muPs_0:
W0, b0 = get_W0_dict(muP_0, normalize_first=True)
W0s.append(W0)
b0s.append(b0)
# define Delta_W_1 and Delta_b_1
Delta_W_1s = []
Delta_b_1s = []
for i in range(N_TRIALS):
Delta_W_1, Delta_b_1 = get_Delta_W1_dict(muPs_0[i],
muPs_1[i],
normalize_first=True)
Delta_W_1s.append(Delta_W_1)
Delta_b_1s.append(Delta_b_1)
# define Delta_W_2 and Delta_b_2
Delta_W_2s = []
Delta_b_2s = []
for i in range(N_TRIALS):
Delta_W_2, Delta_b_2 = get_Delta_W2_dict(muPs_1[i],
muPs_2[i],
normalize_first=True)
Delta_W_2s.append(Delta_W_2)
Delta_b_2s.append(Delta_b_2)
x, y = full_x, full_y # compute pre-activations on full batch
# contributions after first step
h0s = []
delta_h_1s = []
h1s = []
x1s = []
for i in range(N_TRIALS):
h0, delta_h_1, h1, x1 = get_contributions_1(x,
muPs_1[i],
W0s[i],
b0s[i],
Delta_W_1s[i],
Delta_b_1s[i],
normalize_first=True)
h0s.append(h0)
delta_h_1s.append(delta_h_1)
h1s.append(h0)
x1s.append(x1)
# ranks of initial weight matrices and first two updates
logger.info('Computing ranks of weight matrices ...')
weight_ranks_dfs_dict = dict()
tol = None
weight_ranks_dfs_dict['svd_default'] = [
get_svd_ranks_weights(W0s[i],
Delta_W_1s[i],
Delta_W_2s[i],
L,
tol=tol) for i in range(N_TRIALS)
]
tol = 1e-7
weight_ranks_dfs_dict['svd_tol'] = [
get_svd_ranks_weights(W0s[i],
Delta_W_1s[i],
Delta_W_2s[i],
L,
tol=tol) for i in range(N_TRIALS)
]
weight_ranks_dfs_dict['squared_tr'] = [
get_square_trace_ranks_weights(W0s[i], Delta_W_1s[i],
Delta_W_2s[i], L)
for i in range(N_TRIALS)
]
weight_ranks_df_dict = {
key: get_concatenated_ranks_df(weight_ranks_dfs_dict[key])
for key in weight_ranks_dfs_dict.keys()
}
avg_ranks_df_dict = {
key: get_avg_ranks_dfs(weight_ranks_df_dict[key])
for key in weight_ranks_df_dict.keys()
}
logger.info('Saving weights ranks data frames to csv ...')
for key in weight_ranks_df_dict.keys():
logger.info(key)
logger.info('\n' + str(avg_ranks_df_dict[key]) + '\n\n')
avg_ranks_df_dict[key].to_csv(os.path.join(
figures_dir,
template_name.format(key, 'weights') + '.csv'),
header=True,
index=True)
ranks_dfs = [
weight_ranks_df_dict['svd_default'],
weight_ranks_df_dict['svd_tol'], weight_ranks_df_dict['squared_tr']
]
# plot weights ranks
logger.info('Plotting weights ranks')
plt.figure(figsize=(12, 6))
plot_weights_ranks_vs_layer('W0',
ranks_dfs,
tol,
L,
width,
base_lr,
batch_size,
y_scale='log')
plt.savefig(
os.path.join(figures_dir,
template_name.format('W0', 'weights') + '.png'))
plt.figure(figsize=(12, 6))
plot_weights_ranks_vs_layer('Delta_W_1',
ranks_dfs,
tol,
L,
width,
base_lr,
batch_size,
y_scale='log')
plt.savefig(
os.path.join(figures_dir,
template_name.format('Delta_W_1', 'weights') +
'.png'))
plt.figure(figsize=(12, 6))
plot_weights_ranks_vs_layer('Delta_W_2',
ranks_dfs,
tol,
L,
width,
base_lr,
batch_size,
y_scale='log')
plt.savefig(
os.path.join(figures_dir,
template_name.format('Delta_W_2', 'weights') +
'.png'))
# ranks of the pre-activations
logger.info('Computing ranks of (pre-)activations ...')
act_ranks_dfs_dict = dict()
tol = None
act_ranks_dfs_dict['svd_default'] = [
get_svd_ranks_acts(h0s[i],
delta_h_1s[i],
h1s[i],
x1s[i],
L,
tol=tol) for i in range(N_TRIALS)
]
tol = 1e-7
act_ranks_dfs_dict['svd_tol'] = [
get_svd_ranks_acts(h0s[i],
delta_h_1s[i],
h1s[i],
x1s[i],
L,
tol=tol) for i in range(N_TRIALS)
]
act_ranks_dfs_dict['squared_tr'] = [
get_square_trace_ranks_acts(h0s[i], delta_h_1s[i], h1s[i], x1s[i],
L) for i in range(N_TRIALS)
]
act_ranks_df_dict = {
key: get_concatenated_ranks_df(act_ranks_dfs_dict[key])
for key in act_ranks_dfs_dict.keys()
}
avg_ranks_df_dict = {
key: get_avg_ranks_dfs(act_ranks_df_dict[key])
for key in act_ranks_df_dict.keys()
}
logger.info('Saving (pre-)activation ranks data frames to csv ...')
for key in avg_ranks_df_dict.keys():
logger.info(key)
logger.info('\n' + str(avg_ranks_df_dict[key]) + '\n\n')
avg_ranks_df_dict[key].to_csv(os.path.join(
figures_dir,
template_name.format(key, 'acts') + '.csv'),
header=True,
index=True)
ranks_dfs = [
act_ranks_df_dict['svd_default'], act_ranks_df_dict['svd_tol'],
act_ranks_df_dict['squared_tr']
]
logger.info('Plotting (pre-)activation ranks')
plt.figure(figsize=(12, 6))
plot_acts_ranks_vs_layer('h0',
ranks_dfs,
tol,
L,
width,
base_lr,
batch_size,
y_scale='log')
plt.savefig(
os.path.join(figures_dir,
template_name.format('h0', 'acts') + '.png'))
plt.figure(figsize=(12, 6))
plot_acts_ranks_vs_layer('h1',
ranks_dfs,
tol,
L,
width,
base_lr,
batch_size,
y_scale='log')
plt.savefig(
os.path.join(figures_dir,
template_name.format('h1', 'acts') + '.png'))
plt.figure(figsize=(12, 6))
plot_acts_ranks_vs_layer('x1',
ranks_dfs,
tol,
L,
width,
base_lr,
batch_size,
y_scale='log')
plt.savefig(
os.path.join(figures_dir,
template_name.format('x1', 'acts') + '.png'))
plt.figure(figsize=(12, 6))
plot_acts_ranks_vs_layer('delta_h_1',
ranks_dfs,
tol,
L,
width,
base_lr,
batch_size,
y_scale='log')
plt.savefig(
os.path.join(figures_dir,
template_name.format('delta_h_1', 'acts') + '.png'))
# diversity in terms of the index of the maximum entry
logger.info(
'Computing diversity of the maximum entry of pre-activations...')
max_acts_diversity_dfs = [
get_max_acts_diversity(h0s[i], delta_h_1s[i], h1s[i], L)
for i in range(N_TRIALS)
]
max_acts_diversity_df = get_concatenated_ranks_df(
max_acts_diversity_dfs)
avg_max_acts_diversity_df = get_avg_ranks_dfs(max_acts_diversity_df)
logger.info('Diversity of the maximum activation index df:')
logger.info(str(avg_max_acts_diversity_df))
avg_max_acts_diversity_df.to_csv(os.path.join(
figures_dir, 'muP_max_acts_' + version + '.csv'),
header=True,
index=True)
except Exception as e:
logger.exception("Exception when running the script : {}".format(e))
def main(activation="relu",
n_steps=300,
base_lr=0.01,
batch_size=512,
dataset="mnist"):
config_path = os.path.join(CONFIG_PATH, 'fc_ipllr_{}.yaml'.format(dataset))
figures_dir = os.path.join(FIGURES_DIR, dataset)
create_dir(figures_dir)
log_path = os.path.join(figures_dir, 'log_muP_{}.txt'.format(activation))
logger = set_up_logger(log_path)
logger.info('Parameters of the run:')
logger.info('activation = {}'.format(activation))
logger.info('n_steps = {:,}'.format(n_steps))
logger.info('base_lr = {}'.format(base_lr))
logger.info('batch_size = {:,}'.format(batch_size))
logger.info('Random SEED : {:,}'.format(SEED))
logger.info(
'Number of random trials for each model : {:,}'.format(N_TRIALS))
try:
set_random_seeds(SEED) # set random seed for reproducibility
config_dict = read_yaml(config_path)
fig_name_template = 'muP_{}_{}_L={}_m={}_act={}_lr={}_bs={}.png'
config_dict['architecture']['width'] = width
config_dict['architecture']['n_layers'] = L + 1
config_dict['optimizer']['params']['lr'] = base_lr
config_dict['activation']['name'] = activation
base_model_config = ModelConfig(config_dict)
# Load data & define models
logger.info('Loading data ...')
if dataset == 'mnist':
from utils.dataset.mnist import load_data
elif dataset == 'cifar10':
from utils.dataset.cifar10 import load_data
elif dataset == 'cifar100':
# TODO : add cifar100 to utils.dataset
config_dict['architecture']['output_size'] = 100
pass
else:
error = ValueError(
"dataset must be one of ['mnist', 'cifar10', 'cifar100'] but was {}"
.format(dataset))
logger.error(error)
raise error
training_dataset, test_dataset = load_data(download=False,
flatten=True)
train_data_loader = DataLoader(training_dataset,
shuffle=True,
batch_size=batch_size)
batches = list(train_data_loader)
logger.info('Defining models')
base_model_config.scheduler = None
muPs = [FCmuP(base_model_config) for _ in range(N_TRIALS)]
muPs_renorm = [FCmuP(base_model_config) for _ in range(N_TRIALS)]
muPs_renorm_scale_lr = [
FCmuP(base_model_config) for _ in range(N_TRIALS)
]
for muP in muPs_renorm_scale_lr:
for i, param_group in enumerate(muP.optimizer.param_groups):
if i == 0:
param_group['lr'] = param_group['lr'] * (muP.d + 1)
logger.info('Copying parameters of base muP')
for i in range(N_TRIALS):
muPs_renorm[i].copy_initial_params_from_model(muPs[i])
muPs_renorm_scale_lr[i].copy_initial_params_from_model(muPs[i])
muPs_renorm[i].initialize_params()
muPs_renorm_scale_lr[i].initialize_params()
results = dict()
logger.info('Generating training results ...')
results['muP'] = [
collect_training_losses(muPs[i],
batches,
n_steps,
normalize_first=False)
for i in range(N_TRIALS)
]
results['muP_renorm'] = [
collect_training_losses(muPs_renorm[i],
batches,
n_steps,
normalize_first=True)
for i in range(N_TRIALS)
]
results['muP_renorm_scale_lr'] = [
collect_training_losses(muPs_renorm_scale_lr[i],
batches,
n_steps,
normalize_first=True)
for i in range(N_TRIALS)
]
mode = 'training'
losses = dict()
for key, res in results.items():
losses[key] = [r[0] for r in res]
chis = dict()
for key, res in results.items():
chis[key] = [r[1] for r in res]
# Plot losses and derivatives
logger.info('Saving figures at {}'.format(figures_dir))
key = 'loss'
plt.figure(figsize=(12, 8))
plot_losses_models(losses,
key=key,
L=L,
width=width,
activation=activation,
lr=base_lr,
batch_size=batch_size,
mode=mode,
normalize_first=renorm_first,
marker=None,
name='muP')
plt.ylim(0, 2.5)
plt.savefig(
os.path.join(
figures_dir,
fig_name_template.format(mode, key, L, width, activation,
base_lr, batch_size)))
key = 'chi'
plt.figure(figsize=(12, 8))
plot_losses_models(chis,
key=key,
L=L,
width=width,
activation=activation,
lr=base_lr,
batch_size=batch_size,
mode=mode,
marker=None,
name='muP')
plt.savefig(
os.path.join(
figures_dir,
fig_name_template.format(mode, key, L, width, activation,
base_lr, batch_size)))
except Exception as e:
logger.exception("Exception when running the script : {}".format(e))
def _run_trial(self, idx):
trial_name = 'trial_{}'.format(idx + 1)
self.trial_dir = os.path.join(
self.base_experiment_path,
trial_name) # folder to hold trial results
if not os.path.exists(
self.trial_dir): # run trial only if it doesn't already exist
create_dir(self.trial_dir) # directory to save the trial
set_random_seeds(
self.trial_seeds[idx]) # set random seed for the trial
self._set_tb_logger_and_callbacks(
trial_name) # tb logger, checkpoints and early stopping
log_dir = os.path.join(
self.trial_dir,
self.LOG_NAME) # define path to save the logs of the trial
logger = set_up_logger(log_dir)
config = ModelConfig(
config_dict=self.config_dict
) # define the config as a class to pass to the model
model = self.model(config) # define the model
logger.info('----- Trial {:,} ----- with model config {}\n'.format(
idx + 1, self.model_config))
self._log_experiment_info(len(self.train_dataset),
len(self.val_dataset),
len(self.test_dataset), model.std)
logger.info('Random seed used for the script : {:,}'.format(
self.SEED))
logger.info('Number of model parameters : {:,}'.format(
model.count_parameters()))
logger.info('Model architecture :\n{}\n'.format(model))
try:
# training and validation pipeline
trainer = pl.Trainer(
max_epochs=self.max_epochs,
max_steps=self.max_steps,
logger=self.tb_logger,
checkpoint_callback=self.checkpoint_callback,
num_sanity_val_steps=0,
early_stop_callback=self.early_stopping_callback)
trainer.fit(model=model,
train_dataloader=self.train_data_loader,
val_dataloaders=self.val_data_loader)
# test pipeline
test_results = trainer.test(
model=model, test_dataloaders=self.test_data_loader)
logger.info('Test results :\n{}\n'.format(test_results))
# save all training, val and test results to pickle file
with open(os.path.join(self.trial_dir, self.RESULTS_FILE),
'wb') as file:
pickle.dump(model.results, file)
except Exception as e:
# dump and save results before exiting
with open(os.path.join(self.trial_dir, self.RESULTS_FILE),
'wb') as file:
pickle.dump(model.results, file)
logger.warning('model results dumped before interruption')
logger.exception(
"Exception while running the train-val-test pipeline : {}".
format(e))
raise Exception(e)
else:
logging.warning(
"Directory for trial {:,} of experiment {} already exists".
format(idx, self.model_config))
def main(activation="relu",
n_steps=300,
base_lr=0.01,
batch_size=512,
dataset="mnist"):
config_path = os.path.join(CONFIG_PATH, 'fc_ipllr_{}.yaml'.format(dataset))
figures_dir = os.path.join(FIGURES_DIR, dataset)
create_dir(figures_dir)
log_path = os.path.join(figures_dir, 'log_ipllr_{}.txt'.format(activation))
logger = set_up_logger(log_path)
logger.info('Parameters of the run:')
logger.info('activation = {}'.format(activation))
logger.info('n_steps = {:,}'.format(n_steps))
logger.info('base_lr = {}'.format(base_lr))
logger.info('batch_size = {:,}'.format(batch_size))
logger.info('dataset = {}'.format(dataset))
logger.info('Random SEED : {:,}'.format(SEED))
logger.info(
'Number of random trials for each model : {:,}'.format(N_TRIALS))
try:
set_random_seeds(SEED) # set random seed for reproducibility
config_dict = read_yaml(config_path)
fig_name_template = 'IPLLRs_1_last_small_{}_{}_L={}_m={}_act={}_lr={}_bs={}.png'
config_dict['architecture']['width'] = width
config_dict['architecture']['n_layers'] = L + 1
config_dict['optimizer']['params']['lr'] = base_lr
config_dict['activation']['name'] = activation
config_dict['scheduler'] = {
'name': 'warmup_switch',
'params': {
'n_warmup_steps': n_warmup_steps,
'calibrate_base_lr': True,
'default_calibration': False
}
}
# Load data & define models
logger.info('Loading data ...')
if dataset == 'mnist':
from utils.dataset.mnist import load_data
elif dataset == 'cifar10':
from utils.dataset.cifar10 import load_data
elif dataset == 'cifar100':
# TODO : add cifar100 to utils.dataset
pass
else:
error = ValueError(
"dataset must be one of ['mnist', 'cifar10', 'cifar100'] but was {}"
.format(dataset))
logger.error(error)
raise error
training_dataset, test_dataset = load_data(download=False,
flatten=True)
train_data_loader = DataLoader(training_dataset,
shuffle=True,
batch_size=batch_size)
batches = list(train_data_loader)
logger.info('Number of batches (steps) per epoch : {:,}'.format(
len(batches)))
logger.info('Number of epochs : {:,}'.format(n_steps // len(batches)))
config_dict['scheduler']['params']['calibrate_base_lr'] = False
config = ModelConfig(config_dict)
logger.info('Defining models')
ipllrs = [FcIPLLR(config) for _ in range(N_TRIALS)]
config_dict['scheduler']['params']['calibrate_base_lr'] = True
config = ModelConfig(config_dict)
ipllrs_calib = [
FcIPLLR(config, lr_calibration_batches=batches)
for _ in range(N_TRIALS)
]
ipllrs_calib_renorm = [
FcIPLLR(config, lr_calibration_batches=batches)
for _ in range(N_TRIALS)
]
ipllrs_calib_renorm_scale_lr = [
FcIPLLR(config, lr_calibration_batches=batches)
for _ in range(N_TRIALS)
]
logger.info('Copying parameters of base ipllr')
for i in range(N_TRIALS):
ipllrs_calib[i].copy_initial_params_from_model(ipllrs[i])
ipllrs_calib_renorm[i].copy_initial_params_from_model(ipllrs[i])
ipllrs_calib_renorm_scale_lr[i].copy_initial_params_from_model(
ipllrs[i])
ipllrs_calib[i].initialize_params()
ipllrs_calib_renorm[i].initialize_params()
ipllrs_calib_renorm_scale_lr[i].initialize_params()
# Make sure calibration takes into account normalization
logger.info('Recalibrating lrs with new initialisation')
for ipllr in ipllrs_calib:
initial_base_lrs = ipllr.scheduler.calibrate_base_lr(
ipllr, batches=batches, normalize_first=False)
ipllr.scheduler._set_param_group_lrs(initial_base_lrs)
for ipllr in ipllrs_calib_renorm:
initial_base_lrs = ipllr.scheduler.calibrate_base_lr(
ipllr, batches=batches, normalize_first=True)
ipllr.scheduler._set_param_group_lrs(initial_base_lrs)
for ipllr in ipllrs_calib_renorm_scale_lr:
initial_base_lrs = ipllr.scheduler.calibrate_base_lr(
ipllr, batches=batches, normalize_first=True)
ipllr.scheduler._set_param_group_lrs(initial_base_lrs)
# scale lr of first layer if needed
for ipllr in ipllrs_calib_renorm_scale_lr:
ipllr.scheduler.warm_lrs[0] = ipllr.scheduler.warm_lrs[0] * (
ipllr.d + 1)
# with calibration
results = dict()
logger.info('Generating training results ...')
results['ipllr_calib'] = [
collect_training_losses(ipllrs_calib[i],
batches,
n_steps,
normalize_first=False)
for i in range(N_TRIALS)
]
results['ipllr_calib_renorm'] = [
collect_training_losses(ipllrs_calib_renorm[i],
batches,
n_steps,
normalize_first=True)
for i in range(N_TRIALS)
]
results['ipllr_calib_renorm_scale_lr'] = [
collect_training_losses(ipllrs_calib_renorm_scale_lr[i],
batches,
n_steps,
normalize_first=True)
for i in range(N_TRIALS)
]
mode = 'training'
losses = dict()
for key, res in results.items():
losses[key] = [r[0] for r in res]
chis = dict()
for key, res in results.items():
chis[key] = [r[1] for r in res]
# Plot losses and derivatives
logger.info('Saving figures at {}'.format(figures_dir))
key = 'loss'
plt.figure(figsize=(12, 8))
plot_losses_models(losses,
key=key,
L=L,
width=width,
activation=activation,
lr=base_lr,
batch_size=batch_size,
mode=mode,
normalize_first=renorm_first,
marker=None,
name='IPLLR')
plt.savefig(
os.path.join(
figures_dir,
fig_name_template.format(mode, key, L, width, activation,
base_lr, batch_size)))
key = 'chi'
plt.figure(figsize=(12, 8))
plot_losses_models(chis,
key=key,
L=L,
width=width,
activation=activation,
lr=base_lr,
batch_size=batch_size,
mode=mode,
marker=None,
name='IPLLR')
plt.savefig(
os.path.join(
figures_dir,
fig_name_template.format(mode, key, L, width, activation,
base_lr, batch_size)))
except Exception as e:
logger.exception("Exception when running the script : {}".format(e))
def setUp(self) -> None:
config = ModelConfig(
config_file=os.path.join(RESOURCES_DIR, 'resnet_config.yaml'))
self.resnet = ResNetMNIST(config)