def log_after_round_evaluation(
experiment_logger,
tag: str,
loss_train_test: Tensor,
acc_train_test: Tensor,
loss_test_test: Tensor,
acc_test_test: Tensor,
step: int
):
log_loss_and_acc(
f'{tag}train-test',
loss_train_test,
acc_train_test,
experiment_logger,
step
)
log_goal_test_acc(f'{tag}train-test', acc_train_test, experiment_logger, step)
if loss_test_test is not None and acc_test_test is not None:
log_loss_and_acc(
f'{tag}test-test',
loss_test_test,
acc_test_test,
experiment_logger,
step
)
log_goal_test_acc(f'{tag}test-test', acc_test_test, experiment_logger, step)
def log_after_round_evaluation(experiment_logger, tags, loss: Tensor,
acc: Tensor, step: int):
if type(tags) is not list:
tags = [tags]
try:
global_confusion_matrix = GlobalConfusionMatrix()
if global_confusion_matrix.has_data:
matrix = global_confusion_matrix.compute()
for tag in tags:
image = generate_confusion_matrix_heatmap(matrix, title=tag)
experiment_logger.experiment.add_image(tag, image.numpy(),
step)
except Exception as e:
logger.error('failed to log confusion matrix', e)
for tag in tags:
log_loss_and_acc(tag, loss, acc, experiment_logger, step)
log_goal_test_acc(tag, acc, experiment_logger, step)
def log_after_round_evaluation(experiment_logger, tag: str, loss: Tensor,
acc: Tensor, step: int):
log_loss_and_acc(tag, loss, acc, experiment_logger, step)
log_goal_test_acc(tag, acc, experiment_logger, step)
def run_hierarchical_clustering_reptile(
seed,
name,
dataset,
num_clients,
batch_size,
num_label_limit,
use_colored_images,
sample_threshold,
hc_lr,
hc_cluster_initialization_rounds,
hc_client_fraction,
hc_local_epochs,
hc_train_args,
hc_partitioner_class,
hc_linkage_mech,
hc_criterion,
hc_dis_metric,
hc_max_value_criterion, # distance threshold
hc_reallocate_clients, #
hc_threshold_min_client_cluster, # only with hc_reallocate_clients = True,
# results in clusters having at least this number of clients
hc_train_cluster_args,
rp_sgd, # True -> Use SGD as inner optimizer; False -> Use Adam
rp_adam_betas, # Used only if sgd = False
rp_meta_batch_size,
rp_num_meta_steps,
rp_meta_learning_rate_initial,
rp_meta_learning_rate_final,
rp_eval_interval,
rp_inner_learning_rate,
rp_num_inner_steps,
rp_num_inner_steps_eval):
fix_random_seeds(seed)
global_tag = 'global_performance'
if dataset == 'femnist':
if use_colored_images:
fed_dataset = load_femnist_colored_dataset(
data_dir=str((REPO_ROOT / 'data').absolute()),
num_clients=num_clients,
batch_size=batch_size,
sample_threshold=sample_threshold)
else:
fed_dataset = load_femnist_dataset(
data_dir=str((REPO_ROOT / 'data').absolute()),
num_clients=num_clients,
batch_size=batch_size,
sample_threshold=sample_threshold)
if num_label_limit != -1:
fed_dataset = scratch_labels(fed_dataset, num_label_limit)
else:
raise ValueError(f'dataset "{dataset}" unknown')
if not hasattr(hc_max_value_criterion, '__iter__'):
hc_max_value_criterion = [hc_max_value_criterion]
if not hasattr(hc_lr, '__iter__'):
hc_lr = [hc_lr]
input_channels = 3 if use_colored_images else 1
data_distribution_logged = False
for cf in hc_client_fraction:
for lr_i in hc_lr:
# Initialize experiment context parameters
fedavg_optimizer_args = OptimizerArgs(optim.SGD, lr=lr_i)
fedavg_model_args = ModelArgs(CNNLightning,
optimizer_args=fedavg_optimizer_args,
input_channels=input_channels,
only_digits=False)
fedavg_context = FedAvgExperimentContext(
name=name,
client_fraction=cf,
local_epochs=hc_local_epochs,
lr=lr_i,
batch_size=batch_size,
optimizer_args=fedavg_optimizer_args,
model_args=fedavg_model_args,
train_args=hc_train_args,
dataset_name=dataset)
reptile_context = ReptileExperimentContext(
name=name,
dataset_name=dataset,
swap_labels=False,
num_classes_per_client=0,
num_shots_per_class=0,
seed=seed,
model_class=CNNLightning,
sgd=rp_sgd,
adam_betas=rp_adam_betas,
num_clients_train=num_clients,
num_clients_test=0,
meta_batch_size=rp_meta_batch_size,
num_meta_steps=rp_num_meta_steps,
meta_learning_rate_initial=rp_meta_learning_rate_initial,
meta_learning_rate_final=rp_meta_learning_rate_final,
eval_interval=rp_eval_interval,
num_eval_clients_training=-1,
do_final_evaluation=True,
num_eval_clients_final=-1,
inner_batch_size=batch_size,
inner_learning_rate=rp_inner_learning_rate,
num_inner_steps=rp_num_inner_steps,
num_inner_steps_eval=rp_num_inner_steps_eval)
experiment_specification = f'{fedavg_context}'
experiment_logger = create_tensorboard_logger(
name, experiment_specification)
if not data_distribution_logged:
log_dataset_distribution(experiment_logger, 'full dataset',
fed_dataset)
data_distribution_logged = True
log_after_round_evaluation_fns = [
partial(log_after_round_evaluation, experiment_logger,
'fedavg'),
partial(log_after_round_evaluation, experiment_logger,
global_tag)
]
server, clients = run_fedavg(
context=fedavg_context,
num_rounds=max(hc_cluster_initialization_rounds),
dataset=fed_dataset,
save_states=True,
restore_state=True,
after_round_evaluation=log_after_round_evaluation_fns)
for init_rounds, max_value in generate_configuration(
hc_cluster_initialization_rounds, hc_max_value_criterion):
# load the model state
round_model_state = load_fedavg_state(fedavg_context,
init_rounds)
overwrite_participants_models(round_model_state, clients)
# initialize the cluster configuration
round_configuration = {
'num_rounds_init': init_rounds,
'num_rounds_cluster': 0
}
cluster_args = ClusterArgs(
hc_partitioner_class,
linkage_mech=hc_linkage_mech,
criterion=hc_criterion,
dis_metric=hc_dis_metric,
max_value_criterion=max_value,
plot_dendrogram=False,
reallocate_clients=hc_reallocate_clients,
threshold_min_client_cluster=
hc_threshold_min_client_cluster,
**round_configuration)
# create new logger for cluster experiment
experiment_specification = f'{fedavg_context}_{cluster_args}_{reptile_context}'
experiment_logger = create_tensorboard_logger(
name, experiment_specification)
fedavg_context.experiment_logger = experiment_logger
initial_train_fn = partial(run_fedavg_train_round,
round_model_state,
training_args=hc_train_cluster_args)
create_aggregator_fn = partial(FedAvgServer,
model_args=fedavg_model_args,
context=fedavg_context)
# HIERARCHICAL CLUSTERING
logger.debug('starting local training before clustering.')
trained_participants = initial_train_fn(clients)
if len(trained_participants) != len(clients):
raise ValueError(
'not all clients successfully participated in the clustering round'
)
# Clustering of participants by model updates
partitioner = cluster_args()
cluster_clients_dic = partitioner.cluster(clients, server)
_cluster_clients_dic = dict()
for cluster_id, participants in cluster_clients_dic.items():
_cluster_clients_dic[cluster_id] = [
c._name for c in participants
]
log_cluster_distribution(experiment_logger,
cluster_clients_dic, 62)
# Initialize cluster models
cluster_server_dic = {}
for cluster_id, participants in cluster_clients_dic.items():
intermediate_cluster_server = create_aggregator_fn(
'cluster_server' + cluster_id)
intermediate_cluster_server.aggregate(participants)
cluster_server = ReptileServer(
participant_name=f'cluster_server{cluster_id}',
model_args=reptile_context.meta_model_args,
context=reptile_context,
initial_model_state=intermediate_cluster_server.model.
state_dict())
#create_aggregator_fn('cluster_server' + cluster_id)
#cluster_server.aggregate(participants)
cluster_server_dic[cluster_id] = cluster_server
# REPTILE TRAINING INSIDE CLUSTERS
after_round_evaluation = [log_after_round_evaluation]
RANDOM = random.Random(seed)
# Perform training
for i in range(reptile_context.num_meta_steps):
for cluster_id, participants in cluster_clients_dic.items(
):
if reptile_context.meta_batch_size == -1:
meta_batch = participants
else:
meta_batch = [
participants[k] for k in cyclerange(
start=i * reptile_context.meta_batch_size %
len(participants),
interval=reptile_context.meta_batch_size,
total_len=len(participants))
]
# Meta training step
reptile_train_step(
aggregator=cluster_server_dic[cluster_id],
participants=meta_batch,
inner_training_args=reptile_context.
get_inner_training_args(),
meta_training_args=reptile_context.
get_meta_training_args(
frac_done=i / reptile_context.num_meta_steps))
# Evaluation on train and test clients
if i % reptile_context.eval_interval == 0:
global_step = init_rounds + i
global_loss, global_acc = [], []
for cluster_id, participants in cluster_clients_dic.items(
):
# Test on all clients inside clusters
reptile_train_step(
aggregator=cluster_server_dic[cluster_id],
participants=participants,
inner_training_args=reptile_context.
get_inner_training_args(eval=True),
evaluation_mode=True)
result = evaluate_local_models(
participants=participants)
loss = result.get('test/loss')
acc = result.get('test/acc')
# Log
if after_round_evaluation is not None:
for c in after_round_evaluation:
c(experiment_logger,
f'cluster_{cluster_id}', loss, acc,
global_step)
loss_list = loss.tolist()
acc_list = acc.tolist()
global_loss.extend(loss_list if isinstance(
loss_list, list) else [loss_list])
global_acc.extend(acc_list if isinstance(
acc_list, list) else [acc_list])
if after_round_evaluation is not None:
for c in after_round_evaluation:
c(experiment_logger, 'mean_over_all_clients',
Tensor(global_loss), Tensor(global_acc),
global_step)
logger.info(f'Finished Reptile training round {i}')
# Final evaluation at end of training
if reptile_context.do_final_evaluation:
global_loss, global_acc = [], []
for cluster_id, participants in cluster_clients_dic.items(
):
# Final evaluation on train and test clients
# Test on all clients inside clusters
reptile_train_step(
aggregator=cluster_server_dic[cluster_id],
participants=participants,
inner_training_args=reptile_context.
get_inner_training_args(eval=True),
evaluation_mode=True)
result = evaluate_local_models(
participants=participants)
loss = result.get('test/loss')
acc = result.get('test/acc')
print(
f'Cluster {cluster_id} ({len(participants)} part.): loss = {loss}, acc = {acc}'
)
loss_list = loss.tolist()
acc_list = acc.tolist()
global_loss.extend(loss_list if isinstance(
loss_list, list) else [loss_list])
global_acc.extend(acc_list if isinstance(
acc_list, list) else [acc_list])
# Log
if after_round_evaluation is not None:
for c in after_round_evaluation:
c(experiment_logger, f'cluster_{cluster_id}',
loss, acc, reptile_context.num_meta_steps)
log_loss_and_acc('overall_mean', Tensor(global_loss),
Tensor(global_acc), experiment_logger, 0)