def main(xargs, api):
torch.set_num_threads(4)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
search_space = get_search_spaces(xargs.search_space, "nats-bench")
if xargs.search_space == "tss":
random_arch = random_topology_func(search_space)
mutate_arch = mutate_topology_func(search_space)
else:
random_arch = random_size_func(search_space)
mutate_arch = mutate_size_func(search_space)
x_start_time = time.time()
logger.log("{:} use api : {:}".format(time_string(), api))
logger.log("-" * 30 +
" start searching with the time budget of {:} s".format(
xargs.time_budget))
history, current_best_index, total_times = regularized_evolution(
xargs.ea_cycles,
xargs.ea_population,
xargs.ea_sample_size,
xargs.time_budget,
random_arch,
mutate_arch,
api,
xargs.use_proxy > 0,
xargs.dataset,
)
logger.log(
"{:} regularized_evolution finish with history of {:} arch with {:.1f} s (real-cost={:.2f} s)."
.format(time_string(), len(history), total_times[-1],
time.time() - x_start_time))
best_arch = max(history, key=lambda x: x[0])[1]
logger.log("{:} best arch is {:}".format(time_string(), best_arch))
info = api.query_info_str_by_arch(
best_arch, "200" if xargs.search_space == "tss" else "90")
logger.log("{:}".format(info))
logger.log("-" * 100)
logger.close()
return logger.log_dir, current_best_index, total_times
def main(xargs, api):
torch.set_num_threads(4)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
logger.log("{:} use api : {:}".format(time_string(), api))
api.reset_time()
search_space = get_search_spaces(xargs.search_space, "nats-bench")
if xargs.search_space == "tss":
random_arch = random_topology_func(search_space)
else:
random_arch = random_size_func(search_space)
best_arch, best_acc, total_time_cost, history = None, -1, [], []
current_best_index = []
while len(total_time_cost) == 0 or total_time_cost[-1] < xargs.time_budget:
arch = random_arch()
accuracy, _, _, total_cost = api.simulate_train_eval(
arch, xargs.dataset, hp="12"
)
total_time_cost.append(total_cost)
history.append(arch)
if best_arch is None or best_acc < accuracy:
best_acc, best_arch = accuracy, arch
logger.log(
"[{:03d}] : {:} : accuracy = {:.2f}%".format(len(history), arch, accuracy)
)
current_best_index.append(api.query_index_by_arch(best_arch))
logger.log(
"{:} best arch is {:}, accuracy = {:.2f}%, visit {:} archs with {:.1f} s.".format(
time_string(), best_arch, best_acc, len(history), total_time_cost[-1]
)
)
info = api.query_info_str_by_arch(
best_arch, "200" if xargs.search_space == "tss" else "90"
)
logger.log("{:}".format(info))
logger.log("-" * 100)
logger.close()
return logger.log_dir, current_best_index, total_time_cost
def main(xargs):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
torch.set_num_threads(xargs.workers)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
train_data, test_data, xshape, class_num = get_datasets(
xargs.dataset, xargs.data_path, -1)
logger.log("use config from : {:}".format(xargs.config_path))
config = load_config(xargs.config_path, {
"class_num": class_num,
"xshape": xshape
}, logger)
_, train_loader, valid_loader = get_nas_search_loaders(
train_data,
test_data,
xargs.dataset,
"configs/nas-benchmark/",
config.batch_size,
xargs.workers,
)
# since ENAS will train the controller on valid-loader, we need to use train transformation for valid-loader
valid_loader.dataset.transform = deepcopy(train_loader.dataset.transform)
if hasattr(valid_loader.dataset, "transforms"):
valid_loader.dataset.transforms = deepcopy(
train_loader.dataset.transforms)
# data loader
logger.log(
"||||||| {:10s} ||||||| Train-Loader-Num={:}, Valid-Loader-Num={:}, batch size={:}"
.format(xargs.dataset, len(train_loader), len(valid_loader),
config.batch_size))
logger.log("||||||| {:10s} ||||||| Config={:}".format(
xargs.dataset, config))
search_space = get_search_spaces("cell", xargs.search_space_name)
model_config = dict2config(
{
"name": "ENAS",
"C": xargs.channel,
"N": xargs.num_cells,
"max_nodes": xargs.max_nodes,
"num_classes": class_num,
"space": search_space,
"affine": False,
"track_running_stats": bool(xargs.track_running_stats),
},
None,
)
shared_cnn = get_cell_based_tiny_net(model_config)
controller = shared_cnn.create_controller()
w_optimizer, w_scheduler, criterion = get_optim_scheduler(
shared_cnn.parameters(), config)
a_optimizer = torch.optim.Adam(
controller.parameters(),
lr=config.controller_lr,
betas=config.controller_betas,
eps=config.controller_eps,
)
logger.log("w-optimizer : {:}".format(w_optimizer))
logger.log("a-optimizer : {:}".format(a_optimizer))
logger.log("w-scheduler : {:}".format(w_scheduler))
logger.log("criterion : {:}".format(criterion))
# flop, param = get_model_infos(shared_cnn, xshape)
# logger.log('{:}'.format(shared_cnn))
# logger.log('FLOP = {:.2f} M, Params = {:.2f} MB'.format(flop, param))
logger.log("search-space : {:}".format(search_space))
if xargs.arch_nas_dataset is None:
api = None
else:
api = API(xargs.arch_nas_dataset)
logger.log("{:} create API = {:} done".format(time_string(), api))
shared_cnn, controller, criterion = (
torch.nn.DataParallel(shared_cnn).cuda(),
controller.cuda(),
criterion.cuda(),
)
last_info, model_base_path, model_best_path = (
logger.path("info"),
logger.path("model"),
logger.path("best"),
)
if last_info.exists(): # automatically resume from previous checkpoint
logger.log("=> loading checkpoint of the last-info '{:}' start".format(
last_info))
last_info = torch.load(last_info)
start_epoch = last_info["epoch"]
checkpoint = torch.load(last_info["last_checkpoint"])
genotypes = checkpoint["genotypes"]
baseline = checkpoint["baseline"]
valid_accuracies = checkpoint["valid_accuracies"]
shared_cnn.load_state_dict(checkpoint["shared_cnn"])
controller.load_state_dict(checkpoint["controller"])
w_scheduler.load_state_dict(checkpoint["w_scheduler"])
w_optimizer.load_state_dict(checkpoint["w_optimizer"])
a_optimizer.load_state_dict(checkpoint["a_optimizer"])
logger.log(
"=> loading checkpoint of the last-info '{:}' start with {:}-th epoch."
.format(last_info, start_epoch))
else:
logger.log("=> do not find the last-info file : {:}".format(last_info))
start_epoch, valid_accuracies, genotypes, baseline = 0, {
"best": -1
}, {}, None
# start training
start_time, search_time, epoch_time, total_epoch = (
time.time(),
AverageMeter(),
AverageMeter(),
config.epochs + config.warmup,
)
for epoch in range(start_epoch, total_epoch):
w_scheduler.update(epoch, 0.0)
need_time = "Time Left: {:}".format(
convert_secs2time(epoch_time.val * (total_epoch - epoch), True))
epoch_str = "{:03d}-{:03d}".format(epoch, total_epoch)
logger.log(
"\n[Search the {:}-th epoch] {:}, LR={:}, baseline={:}".format(
epoch_str, need_time, min(w_scheduler.get_lr()), baseline))
cnn_loss, cnn_top1, cnn_top5 = train_shared_cnn(
train_loader,
shared_cnn,
controller,
criterion,
w_scheduler,
w_optimizer,
epoch_str,
xargs.print_freq,
logger,
)
logger.log(
"[{:}] shared-cnn : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%"
.format(epoch_str, cnn_loss, cnn_top1, cnn_top5))
ctl_loss, ctl_acc, ctl_baseline, ctl_reward, baseline = train_controller(
valid_loader,
shared_cnn,
controller,
criterion,
a_optimizer,
dict2config(
{
"baseline": baseline,
"ctl_train_steps": xargs.controller_train_steps,
"ctl_num_aggre": xargs.controller_num_aggregate,
"ctl_entropy_w": xargs.controller_entropy_weight,
"ctl_bl_dec": xargs.controller_bl_dec,
},
None,
),
epoch_str,
xargs.print_freq,
logger,
)
search_time.update(time.time() - start_time)
logger.log(
"[{:}] controller : loss={:.2f}, accuracy={:.2f}%, baseline={:.2f}, reward={:.2f}, current-baseline={:.4f}, time-cost={:.1f} s"
.format(
epoch_str,
ctl_loss,
ctl_acc,
ctl_baseline,
ctl_reward,
baseline,
search_time.sum,
))
best_arch, _ = get_best_arch(controller, shared_cnn, valid_loader)
shared_cnn.module.update_arch(best_arch)
_, best_valid_acc, _ = valid_func(valid_loader, shared_cnn, criterion)
genotypes[epoch] = best_arch
# check the best accuracy
valid_accuracies[epoch] = best_valid_acc
if best_valid_acc > valid_accuracies["best"]:
valid_accuracies["best"] = best_valid_acc
genotypes["best"] = best_arch
find_best = True
else:
find_best = False
logger.log("<<<--->>> The {:}-th epoch : {:}".format(
epoch_str, genotypes[epoch]))
# save checkpoint
save_path = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(xargs),
"baseline": baseline,
"shared_cnn": shared_cnn.state_dict(),
"controller": controller.state_dict(),
"w_optimizer": w_optimizer.state_dict(),
"a_optimizer": a_optimizer.state_dict(),
"w_scheduler": w_scheduler.state_dict(),
"genotypes": genotypes,
"valid_accuracies": valid_accuracies,
},
model_base_path,
logger,
)
last_info = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(args),
"last_checkpoint": save_path,
},
logger.path("info"),
logger,
)
if find_best:
logger.log(
"<<<--->>> The {:}-th epoch : find the highest validation accuracy : {:.2f}%."
.format(epoch_str, best_valid_acc))
copy_checkpoint(model_base_path, model_best_path, logger)
if api is not None:
logger.log("{:}".format(api.query_by_arch(genotypes[epoch],
"200")))
# measure elapsed time
epoch_time.update(time.time() - start_time)
start_time = time.time()
logger.log("\n" + "-" * 100)
logger.log("During searching, the best architecture is {:}".format(
genotypes["best"]))
logger.log("Its accuracy is {:.2f}%".format(valid_accuracies["best"]))
logger.log("Randomly select {:} architectures and select the best.".format(
xargs.controller_num_samples))
start_time = time.time()
final_arch, _ = get_best_arch(controller, shared_cnn, valid_loader,
xargs.controller_num_samples)
search_time.update(time.time() - start_time)
shared_cnn.module.update_arch(final_arch)
final_loss, final_top1, final_top5 = valid_func(valid_loader, shared_cnn,
criterion)
logger.log("The Selected Final Architecture : {:}".format(final_arch))
logger.log("Loss={:.3f}, Accuracy@1={:.2f}%, Accuracy@5={:.2f}%".format(
final_loss, final_top1, final_top5))
logger.log(
"ENAS : run {:} epochs, cost {:.1f} s, last-geno is {:}.".format(
total_epoch, search_time.sum, final_arch))
if api is not None:
logger.log("{:}".format(api.query_by_arch(final_arch)))
logger.close()
def main(xargs):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
torch.set_num_threads(xargs.workers)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
train_data, valid_data, xshape, class_num = get_datasets(
xargs.dataset, xargs.data_path, -1)
config = load_config(xargs.config_path, {
"class_num": class_num,
"xshape": xshape
}, logger)
search_loader, _, valid_loader = get_nas_search_loaders(
train_data,
valid_data,
xargs.dataset,
"configs/nas-benchmark/",
(config.batch_size, config.test_batch_size),
xargs.workers,
)
logger.log(
"||||||| {:10s} ||||||| Search-Loader-Num={:}, Valid-Loader-Num={:}, batch size={:}"
.format(xargs.dataset, len(search_loader), len(valid_loader),
config.batch_size))
logger.log("||||||| {:10s} ||||||| Config={:}".format(
xargs.dataset, config))
search_space = get_search_spaces("cell", xargs.search_space_name)
if xargs.model_config is None:
model_config = dict2config(
dict(
name="SETN",
C=xargs.channel,
N=xargs.num_cells,
max_nodes=xargs.max_nodes,
num_classes=class_num,
space=search_space,
affine=False,
track_running_stats=bool(xargs.track_running_stats),
),
None,
)
else:
model_config = load_config(
xargs.model_config,
dict(
num_classes=class_num,
space=search_space,
affine=False,
track_running_stats=bool(xargs.track_running_stats),
),
None,
)
logger.log("search space : {:}".format(search_space))
search_model = get_cell_based_tiny_net(model_config)
w_optimizer, w_scheduler, criterion = get_optim_scheduler(
search_model.get_weights(), config)
a_optimizer = torch.optim.Adam(
search_model.get_alphas(),
lr=xargs.arch_learning_rate,
betas=(0.5, 0.999),
weight_decay=xargs.arch_weight_decay,
)
logger.log("w-optimizer : {:}".format(w_optimizer))
logger.log("a-optimizer : {:}".format(a_optimizer))
logger.log("w-scheduler : {:}".format(w_scheduler))
logger.log("criterion : {:}".format(criterion))
flop, param = get_model_infos(search_model, xshape)
logger.log("FLOP = {:.2f} M, Params = {:.2f} MB".format(flop, param))
logger.log("search-space : {:}".format(search_space))
if xargs.arch_nas_dataset is None:
api = None
else:
api = API(xargs.arch_nas_dataset)
logger.log("{:} create API = {:} done".format(time_string(), api))
last_info, model_base_path, model_best_path = (
logger.path("info"),
logger.path("model"),
logger.path("best"),
)
network, criterion = torch.nn.DataParallel(
search_model).cuda(), criterion.cuda()
if last_info.exists(): # automatically resume from previous checkpoint
logger.log("=> loading checkpoint of the last-info '{:}' start".format(
last_info))
last_info = torch.load(last_info)
start_epoch = last_info["epoch"]
checkpoint = torch.load(last_info["last_checkpoint"])
genotypes = checkpoint["genotypes"]
valid_accuracies = checkpoint["valid_accuracies"]
search_model.load_state_dict(checkpoint["search_model"])
w_scheduler.load_state_dict(checkpoint["w_scheduler"])
w_optimizer.load_state_dict(checkpoint["w_optimizer"])
a_optimizer.load_state_dict(checkpoint["a_optimizer"])
logger.log(
"=> loading checkpoint of the last-info '{:}' start with {:}-th epoch."
.format(last_info, start_epoch))
else:
logger.log("=> do not find the last-info file : {:}".format(last_info))
init_genotype, _ = get_best_arch(valid_loader, network,
xargs.select_num)
start_epoch, valid_accuracies, genotypes = 0, {
"best": -1
}, {
-1: init_genotype
}
# start training
start_time, search_time, epoch_time, total_epoch = (
time.time(),
AverageMeter(),
AverageMeter(),
config.epochs + config.warmup,
)
for epoch in range(start_epoch, total_epoch):
w_scheduler.update(epoch, 0.0)
need_time = "Time Left: {:}".format(
convert_secs2time(epoch_time.val * (total_epoch - epoch), True))
epoch_str = "{:03d}-{:03d}".format(epoch, total_epoch)
logger.log("\n[Search the {:}-th epoch] {:}, LR={:}".format(
epoch_str, need_time, min(w_scheduler.get_lr())))
(
search_w_loss,
search_w_top1,
search_w_top5,
search_a_loss,
search_a_top1,
search_a_top5,
) = search_func(
search_loader,
network,
criterion,
w_scheduler,
w_optimizer,
a_optimizer,
epoch_str,
xargs.print_freq,
logger,
)
search_time.update(time.time() - start_time)
logger.log(
"[{:}] search [base] : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%, time-cost={:.1f} s"
.format(epoch_str, search_w_loss, search_w_top1, search_w_top5,
search_time.sum))
logger.log(
"[{:}] search [arch] : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%"
.format(epoch_str, search_a_loss, search_a_top1, search_a_top5))
genotype, temp_accuracy = get_best_arch(valid_loader, network,
xargs.select_num)
network.module.set_cal_mode("dynamic", genotype)
valid_a_loss, valid_a_top1, valid_a_top5 = valid_func(
valid_loader, network, criterion)
logger.log(
"[{:}] evaluate : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}% | {:}"
.format(epoch_str, valid_a_loss, valid_a_top1, valid_a_top5,
genotype))
# search_model.set_cal_mode('urs')
# valid_a_loss , valid_a_top1 , valid_a_top5 = valid_func(valid_loader, network, criterion)
# logger.log('[{:}] URS---evaluate : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%'.format(epoch_str, valid_a_loss, valid_a_top1, valid_a_top5))
# search_model.set_cal_mode('joint')
# valid_a_loss , valid_a_top1 , valid_a_top5 = valid_func(valid_loader, network, criterion)
# logger.log('[{:}] JOINT-evaluate : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%'.format(epoch_str, valid_a_loss, valid_a_top1, valid_a_top5))
# search_model.set_cal_mode('select')
# valid_a_loss , valid_a_top1 , valid_a_top5 = valid_func(valid_loader, network, criterion)
# logger.log('[{:}] Selec-evaluate : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%'.format(epoch_str, valid_a_loss, valid_a_top1, valid_a_top5))
# check the best accuracy
valid_accuracies[epoch] = valid_a_top1
genotypes[epoch] = genotype
logger.log("<<<--->>> The {:}-th epoch : {:}".format(
epoch_str, genotypes[epoch]))
# save checkpoint
save_path = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(xargs),
"search_model": search_model.state_dict(),
"w_optimizer": w_optimizer.state_dict(),
"a_optimizer": a_optimizer.state_dict(),
"w_scheduler": w_scheduler.state_dict(),
"genotypes": genotypes,
"valid_accuracies": valid_accuracies,
},
model_base_path,
logger,
)
last_info = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(args),
"last_checkpoint": save_path,
},
logger.path("info"),
logger,
)
with torch.no_grad():
logger.log("{:}".format(search_model.show_alphas()))
if api is not None:
logger.log("{:}".format(api.query_by_arch(genotypes[epoch],
"200")))
# measure elapsed time
epoch_time.update(time.time() - start_time)
start_time = time.time()
# the final post procedure : count the time
start_time = time.time()
genotype, temp_accuracy = get_best_arch(valid_loader, network,
xargs.select_num)
search_time.update(time.time() - start_time)
network.module.set_cal_mode("dynamic", genotype)
valid_a_loss, valid_a_top1, valid_a_top5 = valid_func(
valid_loader, network, criterion)
logger.log(
"Last : the gentotype is : {:}, with the validation accuracy of {:.3f}%."
.format(genotype, valid_a_top1))
logger.log("\n" + "-" * 100)
# check the performance from the architecture dataset
logger.log(
"SETN : run {:} epochs, cost {:.1f} s, last-geno is {:}.".format(
total_epoch, search_time.sum, genotype))
if api is not None:
logger.log("{:}".format(api.query_by_arch(genotype, "200")))
logger.close()
def main(xargs, nas_bench):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
torch.set_num_threads(xargs.workers)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
if xargs.dataset == "cifar10":
dataname = "cifar10-valid"
else:
dataname = xargs.dataset
if xargs.data_path is not None:
train_data, valid_data, xshape, class_num = get_datasets(
xargs.dataset, xargs.data_path, -1)
split_Fpath = "configs/nas-benchmark/cifar-split.txt"
cifar_split = load_config(split_Fpath, None, None)
train_split, valid_split = cifar_split.train, cifar_split.valid
logger.log("Load split file from {:}".format(split_Fpath))
config_path = "configs/nas-benchmark/algos/R-EA.config"
config = load_config(config_path, {
"class_num": class_num,
"xshape": xshape
}, logger)
# To split data
train_data_v2 = deepcopy(train_data)
train_data_v2.transform = valid_data.transform
valid_data = train_data_v2
search_data = SearchDataset(xargs.dataset, train_data, train_split,
valid_split)
# data loader
train_loader = torch.utils.data.DataLoader(
train_data,
batch_size=config.batch_size,
sampler=torch.utils.data.sampler.SubsetRandomSampler(train_split),
num_workers=xargs.workers,
pin_memory=True,
)
valid_loader = torch.utils.data.DataLoader(
valid_data,
batch_size=config.batch_size,
sampler=torch.utils.data.sampler.SubsetRandomSampler(valid_split),
num_workers=xargs.workers,
pin_memory=True,
)
logger.log(
"||||||| {:10s} ||||||| Train-Loader-Num={:}, Valid-Loader-Num={:}, batch size={:}"
.format(xargs.dataset, len(train_loader), len(valid_loader),
config.batch_size))
logger.log("||||||| {:10s} ||||||| Config={:}".format(
xargs.dataset, config))
extra_info = {
"config": config,
"train_loader": train_loader,
"valid_loader": valid_loader,
}
else:
config_path = "configs/nas-benchmark/algos/R-EA.config"
config = load_config(config_path, None, logger)
logger.log("||||||| {:10s} ||||||| Config={:}".format(
xargs.dataset, config))
extra_info = {
"config": config,
"train_loader": None,
"valid_loader": None
}
search_space = get_search_spaces("cell", xargs.search_space_name)
random_arch = random_architecture_func(xargs.max_nodes, search_space)
# x =random_arch() ; y = mutate_arch(x)
x_start_time = time.time()
logger.log("{:} use nas_bench : {:}".format(time_string(), nas_bench))
best_arch, best_acc, total_time_cost, history = None, -1, 0, []
# for idx in range(xargs.random_num):
while total_time_cost < xargs.time_budget:
arch = random_arch()
accuracy, cost_time = train_and_eval(arch, nas_bench, extra_info,
dataname)
if total_time_cost + cost_time > xargs.time_budget:
break
else:
total_time_cost += cost_time
history.append(arch)
if best_arch is None or best_acc < accuracy:
best_acc, best_arch = accuracy, arch
logger.log("[{:03d}] : {:} : accuracy = {:.2f}%".format(
len(history), arch, accuracy))
logger.log(
"{:} best arch is {:}, accuracy = {:.2f}%, visit {:} archs with {:.1f} s (real-cost = {:.3f} s)."
.format(
time_string(),
best_arch,
best_acc,
len(history),
total_time_cost,
time.time() - x_start_time,
))
info = nas_bench.query_by_arch(best_arch, "200")
if info is None:
logger.log("Did not find this architecture : {:}.".format(best_arch))
else:
logger.log("{:}".format(info))
logger.log("-" * 100)
logger.close()
return logger.log_dir, nas_bench.query_index_by_arch(best_arch)
def main(args):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = True
# torch.backends.cudnn.deterministic = True
# torch.set_num_threads(args.workers)
prepare_seed(args.rand_seed)
logger = prepare_logger(args)
train_data, valid_data, xshape, class_num = get_datasets(
args.dataset, args.data_path, args.cutout_length)
train_loader = torch.utils.data.DataLoader(
train_data,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.workers,
pin_memory=True,
)
valid_loader = torch.utils.data.DataLoader(
valid_data,
batch_size=args.batch_size,
shuffle=False,
num_workers=args.workers,
pin_memory=True,
)
# get configures
model_config = load_config(args.model_config, {"class_num": class_num},
logger)
optim_config = load_config(
args.optim_config,
{
"class_num": class_num,
"KD_alpha": args.KD_alpha,
"KD_temperature": args.KD_temperature,
},
logger,
)
# load checkpoint
teacher_base = load_net_from_checkpoint(args.KD_checkpoint)
teacher = torch.nn.DataParallel(teacher_base).cuda()
base_model = obtain_model(model_config)
flop, param = get_model_infos(base_model, xshape)
logger.log("Student ====>>>>:\n{:}".format(base_model))
logger.log("Teacher ====>>>>:\n{:}".format(teacher_base))
logger.log("model information : {:}".format(base_model.get_message()))
logger.log("-" * 50)
logger.log("Params={:.2f} MB, FLOPs={:.2f} M ... = {:.2f} G".format(
param, flop, flop / 1e3))
logger.log("-" * 50)
logger.log("train_data : {:}".format(train_data))
logger.log("valid_data : {:}".format(valid_data))
optimizer, scheduler, criterion = get_optim_scheduler(
base_model.parameters(), optim_config)
logger.log("optimizer : {:}".format(optimizer))
logger.log("scheduler : {:}".format(scheduler))
logger.log("criterion : {:}".format(criterion))
last_info, model_base_path, model_best_path = (
logger.path("info"),
logger.path("model"),
logger.path("best"),
)
network, criterion = torch.nn.DataParallel(
base_model).cuda(), criterion.cuda()
if last_info.exists(): # automatically resume from previous checkpoint
logger.log("=> loading checkpoint of the last-info '{:}' start".format(
last_info))
last_info = torch.load(last_info)
start_epoch = last_info["epoch"] + 1
checkpoint = torch.load(last_info["last_checkpoint"])
base_model.load_state_dict(checkpoint["base-model"])
scheduler.load_state_dict(checkpoint["scheduler"])
optimizer.load_state_dict(checkpoint["optimizer"])
valid_accuracies = checkpoint["valid_accuracies"]
max_bytes = checkpoint["max_bytes"]
logger.log(
"=> loading checkpoint of the last-info '{:}' start with {:}-th epoch."
.format(last_info, start_epoch))
elif args.resume is not None:
assert Path(
args.resume).exists(), "Can not find the resume file : {:}".format(
args.resume)
checkpoint = torch.load(args.resume)
start_epoch = checkpoint["epoch"] + 1
base_model.load_state_dict(checkpoint["base-model"])
scheduler.load_state_dict(checkpoint["scheduler"])
optimizer.load_state_dict(checkpoint["optimizer"])
valid_accuracies = checkpoint["valid_accuracies"]
max_bytes = checkpoint["max_bytes"]
logger.log(
"=> loading checkpoint from '{:}' start with {:}-th epoch.".format(
args.resume, start_epoch))
elif args.init_model is not None:
assert Path(args.init_model).exists(
), "Can not find the initialization file : {:}".format(args.init_model)
checkpoint = torch.load(args.init_model)
base_model.load_state_dict(checkpoint["base-model"])
start_epoch, valid_accuracies, max_bytes = 0, {"best": -1}, {}
logger.log("=> initialize the model from {:}".format(args.init_model))
else:
logger.log("=> do not find the last-info file : {:}".format(last_info))
start_epoch, valid_accuracies, max_bytes = 0, {"best": -1}, {}
train_func, valid_func = get_procedures(args.procedure)
total_epoch = optim_config.epochs + optim_config.warmup
# Main Training and Evaluation Loop
start_time = time.time()
epoch_time = AverageMeter()
for epoch in range(start_epoch, total_epoch):
scheduler.update(epoch, 0.0)
need_time = "Time Left: {:}".format(
convert_secs2time(epoch_time.avg * (total_epoch - epoch), True))
epoch_str = "epoch={:03d}/{:03d}".format(epoch, total_epoch)
LRs = scheduler.get_lr()
find_best = False
logger.log(
"\n***{:s}*** start {:s} {:s}, LR=[{:.6f} ~ {:.6f}], scheduler={:}"
.format(time_string(), epoch_str, need_time, min(LRs), max(LRs),
scheduler))
# train for one epoch
train_loss, train_acc1, train_acc5 = train_func(
train_loader,
teacher,
network,
criterion,
scheduler,
optimizer,
optim_config,
epoch_str,
args.print_freq,
logger,
)
# log the results
logger.log(
"***{:s}*** TRAIN [{:}] loss = {:.6f}, accuracy-1 = {:.2f}, accuracy-5 = {:.2f}"
.format(time_string(), epoch_str, train_loss, train_acc1,
train_acc5))
# evaluate the performance
if (epoch % args.eval_frequency == 0) or (epoch + 1 == total_epoch):
logger.log("-" * 150)
valid_loss, valid_acc1, valid_acc5 = valid_func(
valid_loader,
teacher,
network,
criterion,
optim_config,
epoch_str,
args.print_freq_eval,
logger,
)
valid_accuracies[epoch] = valid_acc1
logger.log(
"***{:s}*** VALID [{:}] loss = {:.6f}, accuracy@1 = {:.2f}, accuracy@5 = {:.2f} | Best-Valid-Acc@1={:.2f}, Error@1={:.2f}"
.format(
time_string(),
epoch_str,
valid_loss,
valid_acc1,
valid_acc5,
valid_accuracies["best"],
100 - valid_accuracies["best"],
))
if valid_acc1 > valid_accuracies["best"]:
valid_accuracies["best"] = valid_acc1
find_best = True
logger.log(
"Currently, the best validation accuracy found at {:03d}-epoch :: acc@1={:.2f}, acc@5={:.2f}, error@1={:.2f}, error@5={:.2f}, save into {:}."
.format(
epoch,
valid_acc1,
valid_acc5,
100 - valid_acc1,
100 - valid_acc5,
model_best_path,
))
num_bytes = (torch.cuda.max_memory_cached(
next(network.parameters()).device) * 1.0)
logger.log(
"[GPU-Memory-Usage on {:} is {:} bytes, {:.2f} KB, {:.2f} MB, {:.2f} GB.]"
.format(
next(network.parameters()).device,
int(num_bytes),
num_bytes / 1e3,
num_bytes / 1e6,
num_bytes / 1e9,
))
max_bytes[epoch] = num_bytes
if epoch % 10 == 0:
torch.cuda.empty_cache()
# save checkpoint
save_path = save_checkpoint(
{
"epoch": epoch,
"args": deepcopy(args),
"max_bytes": deepcopy(max_bytes),
"FLOP": flop,
"PARAM": param,
"valid_accuracies": deepcopy(valid_accuracies),
"model-config": model_config._asdict(),
"optim-config": optim_config._asdict(),
"base-model": base_model.state_dict(),
"scheduler": scheduler.state_dict(),
"optimizer": optimizer.state_dict(),
},
model_base_path,
logger,
)
if find_best:
copy_checkpoint(model_base_path, model_best_path, logger)
last_info = save_checkpoint(
{
"epoch": epoch,
"args": deepcopy(args),
"last_checkpoint": save_path,
},
logger.path("info"),
logger,
)
# measure elapsed time
epoch_time.update(time.time() - start_time)
start_time = time.time()
logger.log("\n" + "-" * 200)
logger.log("||| Params={:.2f} MB, FLOPs={:.2f} M ... = {:.2f} G".format(
param, flop, flop / 1e3))
logger.log(
"Finish training/validation in {:} with Max-GPU-Memory of {:.2f} MB, and save final checkpoint into {:}"
.format(
convert_secs2time(epoch_time.sum, True),
max(v for k, v in max_bytes.items()) / 1e6,
logger.path("info"),
))
logger.log("-" * 200 + "\n")
logger.close()
def main(xargs):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
# torch.set_num_threads(xargs.workers)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
train_data, valid_data, xshape, class_num = get_datasets(
xargs.dataset, xargs.data_path, -1
)
if xargs.overwite_epochs is None:
extra_info = {"class_num": class_num, "xshape": xshape}
else:
extra_info = {
"class_num": class_num,
"xshape": xshape,
"epochs": xargs.overwite_epochs,
}
config = load_config(xargs.config_path, extra_info, logger)
search_loader, train_loader, valid_loader = get_nas_search_loaders(
train_data,
valid_data,
xargs.dataset,
"configs/nas-benchmark/",
(config.batch_size, config.test_batch_size),
xargs.workers,
)
logger.log(
"||||||| {:10s} ||||||| Search-Loader-Num={:}, Valid-Loader-Num={:}, batch size={:}".format(
xargs.dataset, len(search_loader), len(valid_loader), config.batch_size
)
)
logger.log("||||||| {:10s} ||||||| Config={:}".format(xargs.dataset, config))
search_space = get_search_spaces(xargs.search_space, "nats-bench")
model_config = dict2config(
dict(
name="generic",
super_type="search-shape",
candidate_Cs=search_space["candidates"],
max_num_Cs=search_space["numbers"],
num_classes=class_num,
genotype=args.genotype,
affine=bool(xargs.affine),
track_running_stats=bool(xargs.track_running_stats),
),
None,
)
logger.log("search space : {:}".format(search_space))
logger.log("model config : {:}".format(model_config))
search_model = get_cell_based_tiny_net(model_config)
search_model.set_algo(xargs.algo)
logger.log("{:}".format(search_model))
w_optimizer, w_scheduler, criterion = get_optim_scheduler(
search_model.weights, config
)
a_optimizer = torch.optim.Adam(
search_model.alphas,
lr=xargs.arch_learning_rate,
betas=(0.5, 0.999),
weight_decay=xargs.arch_weight_decay,
eps=xargs.arch_eps,
)
logger.log("w-optimizer : {:}".format(w_optimizer))
logger.log("a-optimizer : {:}".format(a_optimizer))
logger.log("w-scheduler : {:}".format(w_scheduler))
logger.log("criterion : {:}".format(criterion))
params = count_parameters_in_MB(search_model)
logger.log("The parameters of the search model = {:.2f} MB".format(params))
logger.log("search-space : {:}".format(search_space))
if bool(xargs.use_api):
api = create(None, "size", fast_mode=True, verbose=False)
else:
api = None
logger.log("{:} create API = {:} done".format(time_string(), api))
last_info, model_base_path, model_best_path = (
logger.path("info"),
logger.path("model"),
logger.path("best"),
)
network, criterion = search_model.cuda(), criterion.cuda() # use a single GPU
last_info, model_base_path, model_best_path = (
logger.path("info"),
logger.path("model"),
logger.path("best"),
)
if last_info.exists(): # automatically resume from previous checkpoint
logger.log(
"=> loading checkpoint of the last-info '{:}' start".format(last_info)
)
last_info = torch.load(last_info)
start_epoch = last_info["epoch"]
checkpoint = torch.load(last_info["last_checkpoint"])
genotypes = checkpoint["genotypes"]
valid_accuracies = checkpoint["valid_accuracies"]
search_model.load_state_dict(checkpoint["search_model"])
w_scheduler.load_state_dict(checkpoint["w_scheduler"])
w_optimizer.load_state_dict(checkpoint["w_optimizer"])
a_optimizer.load_state_dict(checkpoint["a_optimizer"])
logger.log(
"=> loading checkpoint of the last-info '{:}' start with {:}-th epoch.".format(
last_info, start_epoch
)
)
else:
logger.log("=> do not find the last-info file : {:}".format(last_info))
start_epoch, valid_accuracies, genotypes = 0, {"best": -1}, {-1: network.random}
# start training
start_time, search_time, epoch_time, total_epoch = (
time.time(),
AverageMeter(),
AverageMeter(),
config.epochs + config.warmup,
)
for epoch in range(start_epoch, total_epoch):
w_scheduler.update(epoch, 0.0)
need_time = "Time Left: {:}".format(
convert_secs2time(epoch_time.val * (total_epoch - epoch), True)
)
epoch_str = "{:03d}-{:03d}".format(epoch, total_epoch)
if (
xargs.warmup_ratio is None
or xargs.warmup_ratio <= float(epoch) / total_epoch
):
enable_controller = True
network.set_warmup_ratio(None)
else:
enable_controller = False
network.set_warmup_ratio(
1.0 - float(epoch) / total_epoch / xargs.warmup_ratio
)
logger.log(
"\n[Search the {:}-th epoch] {:}, LR={:}, controller-warmup={:}, enable_controller={:}".format(
epoch_str,
need_time,
min(w_scheduler.get_lr()),
network.warmup_ratio,
enable_controller,
)
)
if xargs.algo == "mask_gumbel" or xargs.algo == "tas":
network.set_tau(
xargs.tau_max
- (xargs.tau_max - xargs.tau_min) * epoch / (total_epoch - 1)
)
logger.log("[RESET tau as : {:}]".format(network.tau))
(
search_w_loss,
search_w_top1,
search_w_top5,
search_a_loss,
search_a_top1,
search_a_top5,
) = search_func(
search_loader,
network,
criterion,
w_scheduler,
w_optimizer,
a_optimizer,
enable_controller,
xargs.algo,
epoch_str,
xargs.print_freq,
logger,
)
search_time.update(time.time() - start_time)
logger.log(
"[{:}] search [base] : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%, time-cost={:.1f} s".format(
epoch_str, search_w_loss, search_w_top1, search_w_top5, search_time.sum
)
)
logger.log(
"[{:}] search [arch] : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%".format(
epoch_str, search_a_loss, search_a_top1, search_a_top5
)
)
genotype = network.genotype
logger.log("[{:}] - [get_best_arch] : {:}".format(epoch_str, genotype))
valid_a_loss, valid_a_top1, valid_a_top5 = valid_func(
valid_loader, network, criterion, logger
)
logger.log(
"[{:}] evaluate : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}% | {:}".format(
epoch_str, valid_a_loss, valid_a_top1, valid_a_top5, genotype
)
)
valid_accuracies[epoch] = valid_a_top1
genotypes[epoch] = genotype
logger.log(
"<<<--->>> The {:}-th epoch : {:}".format(epoch_str, genotypes[epoch])
)
# save checkpoint
save_path = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(xargs),
"search_model": search_model.state_dict(),
"w_optimizer": w_optimizer.state_dict(),
"a_optimizer": a_optimizer.state_dict(),
"w_scheduler": w_scheduler.state_dict(),
"genotypes": genotypes,
"valid_accuracies": valid_accuracies,
},
model_base_path,
logger,
)
last_info = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(args),
"last_checkpoint": save_path,
},
logger.path("info"),
logger,
)
with torch.no_grad():
logger.log("{:}".format(search_model.show_alphas()))
if api is not None:
logger.log("{:}".format(api.query_by_arch(genotypes[epoch], "90")))
# measure elapsed time
epoch_time.update(time.time() - start_time)
start_time = time.time()
# the final post procedure : count the time
start_time = time.time()
genotype = network.genotype
search_time.update(time.time() - start_time)
valid_a_loss, valid_a_top1, valid_a_top5 = valid_func(
valid_loader, network, criterion, logger
)
logger.log(
"Last : the gentotype is : {:}, with the validation accuracy of {:.3f}%.".format(
genotype, valid_a_top1
)
)
logger.log("\n" + "-" * 100)
# check the performance from the architecture dataset
logger.log(
"[{:}] run {:} epochs, cost {:.1f} s, last-geno is {:}.".format(
xargs.algo, total_epoch, search_time.sum, genotype
)
)
if api is not None:
logger.log("{:}".format(api.query_by_arch(genotype, "90")))
logger.close()
def main(args):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = True
# torch.backends.cudnn.deterministic = True
# torch.set_num_threads(args.workers)
prepare_seed(args.rand_seed)
logger = prepare_logger(args)
# prepare dataset
train_data, valid_data, xshape, class_num = get_datasets(
args.dataset, args.data_path, args.cutout_length)
# train_loader = torch.utils.data.DataLoader(train_data, batch_size=args.batch_size, shuffle=True , num_workers=args.workers, pin_memory=True)
valid_loader = torch.utils.data.DataLoader(
valid_data,
batch_size=args.batch_size,
shuffle=False,
num_workers=args.workers,
pin_memory=True,
)
split_file_path = Path(args.split_path)
assert split_file_path.exists(), "{:} does not exist".format(
split_file_path)
split_info = torch.load(split_file_path)
train_split, valid_split = split_info["train"], split_info["valid"]
assert (len(set(train_split).intersection(set(valid_split))) == 0
), "There should be 0 element that belongs to both train and valid"
assert len(train_split) + len(valid_split) == len(
train_data), "{:} + {:} vs {:}".format(len(train_split),
len(valid_split),
len(train_data))
search_dataset = SearchDataset(args.dataset, train_data, train_split,
valid_split)
search_train_loader = torch.utils.data.DataLoader(
train_data,
batch_size=args.batch_size,
sampler=torch.utils.data.sampler.SubsetRandomSampler(train_split),
pin_memory=True,
num_workers=args.workers,
)
search_valid_loader = torch.utils.data.DataLoader(
train_data,
batch_size=args.batch_size,
sampler=torch.utils.data.sampler.SubsetRandomSampler(valid_split),
pin_memory=True,
num_workers=args.workers,
)
search_loader = torch.utils.data.DataLoader(
search_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.workers,
pin_memory=True,
sampler=None,
)
# get configures
model_config = load_config(
args.model_config,
{
"class_num": class_num,
"search_mode": args.search_shape
},
logger,
)
# obtain the model
search_model = obtain_search_model(model_config)
MAX_FLOP, param = get_model_infos(search_model, xshape)
optim_config = load_config(args.optim_config, {
"class_num": class_num,
"FLOP": MAX_FLOP
}, logger)
logger.log("Model Information : {:}".format(search_model.get_message()))
logger.log("MAX_FLOP = {:} M".format(MAX_FLOP))
logger.log("Params = {:} M".format(param))
logger.log("train_data : {:}".format(train_data))
logger.log("search-data: {:}".format(search_dataset))
logger.log("search_train_loader : {:} samples".format(len(train_split)))
logger.log("search_valid_loader : {:} samples".format(len(valid_split)))
base_optimizer, scheduler, criterion = get_optim_scheduler(
search_model.base_parameters(), optim_config)
arch_optimizer = torch.optim.Adam(
search_model.arch_parameters(),
lr=optim_config.arch_LR,
betas=(0.5, 0.999),
weight_decay=optim_config.arch_decay,
)
logger.log("base-optimizer : {:}".format(base_optimizer))
logger.log("arch-optimizer : {:}".format(arch_optimizer))
logger.log("scheduler : {:}".format(scheduler))
logger.log("criterion : {:}".format(criterion))
last_info, model_base_path, model_best_path = (
logger.path("info"),
logger.path("model"),
logger.path("best"),
)
network, criterion = torch.nn.DataParallel(
search_model).cuda(), criterion.cuda()
# load checkpoint
if last_info.exists() or (args.resume is not None and osp.isfile(
args.resume)): # automatically resume from previous checkpoint
if args.resume is not None and osp.isfile(args.resume):
resume_path = Path(args.resume)
elif last_info.exists():
resume_path = last_info
else:
raise ValueError("Something is wrong.")
logger.log("=> loading checkpoint of the last-info '{:}' start".format(
resume_path))
checkpoint = torch.load(resume_path)
if "last_checkpoint" in checkpoint:
last_checkpoint_path = checkpoint["last_checkpoint"]
if not last_checkpoint_path.exists():
logger.log("Does not find {:}, try another path".format(
last_checkpoint_path))
last_checkpoint_path = (resume_path.parent /
last_checkpoint_path.parent.name /
last_checkpoint_path.name)
assert (last_checkpoint_path.exists()
), "can not find the checkpoint from {:}".format(
last_checkpoint_path)
checkpoint = torch.load(last_checkpoint_path)
start_epoch = checkpoint["epoch"] + 1
search_model.load_state_dict(checkpoint["search_model"])
scheduler.load_state_dict(checkpoint["scheduler"])
base_optimizer.load_state_dict(checkpoint["base_optimizer"])
arch_optimizer.load_state_dict(checkpoint["arch_optimizer"])
valid_accuracies = checkpoint["valid_accuracies"]
arch_genotypes = checkpoint["arch_genotypes"]
discrepancies = checkpoint["discrepancies"]
logger.log(
"=> loading checkpoint of the last-info '{:}' start with {:}-th epoch."
.format(resume_path, start_epoch))
else:
logger.log(
"=> do not find the last-info file : {:} or resume : {:}".format(
last_info, args.resume))
start_epoch, valid_accuracies, arch_genotypes, discrepancies = (
0,
{
"best": -1
},
{},
{},
)
# main procedure
train_func, valid_func = get_procedures(args.procedure)
total_epoch = optim_config.epochs + optim_config.warmup
start_time, epoch_time = time.time(), AverageMeter()
for epoch in range(start_epoch, total_epoch):
scheduler.update(epoch, 0.0)
search_model.set_tau(args.gumbel_tau_max, args.gumbel_tau_min,
epoch * 1.0 / total_epoch)
need_time = "Time Left: {:}".format(
convert_secs2time(epoch_time.avg * (total_epoch - epoch), True))
epoch_str = "epoch={:03d}/{:03d}".format(epoch, total_epoch)
LRs = scheduler.get_lr()
find_best = False
logger.log(
"\n***{:s}*** start {:s} {:s}, LR=[{:.6f} ~ {:.6f}], scheduler={:}, tau={:}, FLOP={:.2f}"
.format(
time_string(),
epoch_str,
need_time,
min(LRs),
max(LRs),
scheduler,
search_model.tau,
MAX_FLOP,
))
# train for one epoch
train_base_loss, train_arch_loss, train_acc1, train_acc5 = train_func(
search_loader,
network,
criterion,
scheduler,
base_optimizer,
arch_optimizer,
optim_config,
{
"epoch-str": epoch_str,
"FLOP-exp": MAX_FLOP * args.FLOP_ratio,
"FLOP-weight": args.FLOP_weight,
"FLOP-tolerant": MAX_FLOP * args.FLOP_tolerant,
},
args.print_freq,
logger,
)
# log the results
logger.log(
"***{:s}*** TRAIN [{:}] base-loss = {:.6f}, arch-loss = {:.6f}, accuracy-1 = {:.2f}, accuracy-5 = {:.2f}"
.format(
time_string(),
epoch_str,
train_base_loss,
train_arch_loss,
train_acc1,
train_acc5,
))
cur_FLOP, genotype = search_model.get_flop("genotype",
model_config._asdict(),
None)
arch_genotypes[epoch] = genotype
arch_genotypes["last"] = genotype
logger.log("[{:}] genotype : {:}".format(epoch_str, genotype))
arch_info, discrepancy = search_model.get_arch_info()
logger.log(arch_info)
discrepancies[epoch] = discrepancy
logger.log(
"[{:}] FLOP : {:.2f} MB, ratio : {:.4f}, Expected-ratio : {:.4f}, Discrepancy : {:.3f}"
.format(
epoch_str,
cur_FLOP,
cur_FLOP / MAX_FLOP,
args.FLOP_ratio,
np.mean(discrepancy),
))
# if cur_FLOP/MAX_FLOP > args.FLOP_ratio:
# init_flop_weight = init_flop_weight * args.FLOP_decay
# else:
# init_flop_weight = init_flop_weight / args.FLOP_decay
# evaluate the performance
if (epoch % args.eval_frequency == 0) or (epoch + 1 == total_epoch):
logger.log("-" * 150)
valid_loss, valid_acc1, valid_acc5 = valid_func(
search_valid_loader,
network,
criterion,
epoch_str,
args.print_freq_eval,
logger,
)
valid_accuracies[epoch] = valid_acc1
logger.log(
"***{:s}*** VALID [{:}] loss = {:.6f}, accuracy@1 = {:.2f}, accuracy@5 = {:.2f} | Best-Valid-Acc@1={:.2f}, Error@1={:.2f}"
.format(
time_string(),
epoch_str,
valid_loss,
valid_acc1,
valid_acc5,
valid_accuracies["best"],
100 - valid_accuracies["best"],
))
if valid_acc1 > valid_accuracies["best"]:
valid_accuracies["best"] = valid_acc1
arch_genotypes["best"] = genotype
find_best = True
logger.log(
"Currently, the best validation accuracy found at {:03d}-epoch :: acc@1={:.2f}, acc@5={:.2f}, error@1={:.2f}, error@5={:.2f}, save into {:}."
.format(
epoch,
valid_acc1,
valid_acc5,
100 - valid_acc1,
100 - valid_acc5,
model_best_path,
))
# save checkpoint
save_path = save_checkpoint(
{
"epoch": epoch,
"args": deepcopy(args),
"valid_accuracies": deepcopy(valid_accuracies),
"model-config": model_config._asdict(),
"optim-config": optim_config._asdict(),
"search_model": search_model.state_dict(),
"scheduler": scheduler.state_dict(),
"base_optimizer": base_optimizer.state_dict(),
"arch_optimizer": arch_optimizer.state_dict(),
"arch_genotypes": arch_genotypes,
"discrepancies": discrepancies,
},
model_base_path,
logger,
)
if find_best:
copy_checkpoint(model_base_path, model_best_path, logger)
last_info = save_checkpoint(
{
"epoch": epoch,
"args": deepcopy(args),
"last_checkpoint": save_path,
},
logger.path("info"),
logger,
)
# measure elapsed time
epoch_time.update(time.time() - start_time)
start_time = time.time()
logger.log("")
logger.log("-" * 100)
last_config_path = logger.path("log") / "seed-{:}-last.config".format(
args.rand_seed)
configure2str(arch_genotypes["last"], str(last_config_path))
logger.log("save the last config int {:} :\n{:}".format(
last_config_path, arch_genotypes["last"]))
best_arch, valid_acc = arch_genotypes["best"], valid_accuracies["best"]
for key, config in arch_genotypes.items():
if key == "last":
continue
FLOP_ratio = config["estimated_FLOP"] / MAX_FLOP
if abs(FLOP_ratio - args.FLOP_ratio) <= args.FLOP_tolerant:
if valid_acc < valid_accuracies[key]:
best_arch, valid_acc = config, valid_accuracies[key]
print("Best-Arch : {:}\nRatio={:}, Valid-ACC={:}".format(
best_arch, best_arch["estimated_FLOP"] / MAX_FLOP, valid_acc))
best_config_path = logger.path("log") / "seed-{:}-best.config".format(
args.rand_seed)
configure2str(best_arch, str(best_config_path))
logger.log("save the last config int {:} :\n{:}".format(
best_config_path, best_arch))
logger.log("\n" + "-" * 200)
logger.log(
"Finish training/validation in {:}, and save final checkpoint into {:}"
.format(convert_secs2time(epoch_time.sum, True), logger.path("info")))
logger.close()
def main(xargs):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
torch.set_num_threads(xargs.workers)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
train_data, valid_data, xshape, class_num = get_datasets(
xargs.dataset, xargs.data_path, -1
)
# config_path = 'configs/nas-benchmark/algos/DARTS.config'
config = load_config(
xargs.config_path, {"class_num": class_num, "xshape": xshape}, logger
)
search_loader, _, valid_loader = get_nas_search_loaders(
train_data,
valid_data,
xargs.dataset,
"configs/nas-benchmark/",
config.batch_size,
xargs.workers,
)
logger.log(
"||||||| {:10s} ||||||| Search-Loader-Num={:}, Valid-Loader-Num={:}, batch size={:}".format(
xargs.dataset, len(search_loader), len(valid_loader), config.batch_size
)
)
logger.log("||||||| {:10s} ||||||| Config={:}".format(xargs.dataset, config))
search_space = get_search_spaces("cell", xargs.search_space_name)
if xargs.model_config is None:
model_config = dict2config(
{
"name": "DARTS-V1",
"C": xargs.channel,
"N": xargs.num_cells,
"max_nodes": xargs.max_nodes,
"num_classes": class_num,
"space": search_space,
"affine": False,
"track_running_stats": bool(xargs.track_running_stats),
},
None,
)
else:
model_config = load_config(
xargs.model_config,
{
"num_classes": class_num,
"space": search_space,
"affine": False,
"track_running_stats": bool(xargs.track_running_stats),
},
None,
)
search_model = get_cell_based_tiny_net(model_config)
logger.log("search-model :\n{:}".format(search_model))
w_optimizer, w_scheduler, criterion = get_optim_scheduler(
search_model.get_weights(), config
)
a_optimizer = torch.optim.Adam(
search_model.get_alphas(),
lr=xargs.arch_learning_rate,
betas=(0.5, 0.999),
weight_decay=xargs.arch_weight_decay,
)
logger.log("w-optimizer : {:}".format(w_optimizer))
logger.log("a-optimizer : {:}".format(a_optimizer))
logger.log("w-scheduler : {:}".format(w_scheduler))
logger.log("criterion : {:}".format(criterion))
flop, param = get_model_infos(search_model, xshape)
# logger.log('{:}'.format(search_model))
logger.log("FLOP = {:.2f} M, Params = {:.2f} MB".format(flop, param))
if xargs.arch_nas_dataset is None:
api = None
else:
api = API(xargs.arch_nas_dataset)
logger.log("{:} create API = {:} done".format(time_string(), api))
last_info, model_base_path, model_best_path = (
logger.path("info"),
logger.path("model"),
logger.path("best"),
)
network, criterion = torch.nn.DataParallel(search_model).cuda(), criterion.cuda()
if last_info.exists(): # automatically resume from previous checkpoint
logger.log(
"=> loading checkpoint of the last-info '{:}' start".format(last_info)
)
last_info = torch.load(last_info)
start_epoch = last_info["epoch"]
checkpoint = torch.load(last_info["last_checkpoint"])
genotypes = checkpoint["genotypes"]
valid_accuracies = checkpoint["valid_accuracies"]
search_model.load_state_dict(checkpoint["search_model"])
w_scheduler.load_state_dict(checkpoint["w_scheduler"])
w_optimizer.load_state_dict(checkpoint["w_optimizer"])
a_optimizer.load_state_dict(checkpoint["a_optimizer"])
logger.log(
"=> loading checkpoint of the last-info '{:}' start with {:}-th epoch.".format(
last_info, start_epoch
)
)
else:
logger.log("=> do not find the last-info file : {:}".format(last_info))
start_epoch, valid_accuracies, genotypes = (
0,
{"best": -1},
{-1: search_model.genotype()},
)
# start training
start_time, search_time, epoch_time, total_epoch = (
time.time(),
AverageMeter(),
AverageMeter(),
config.epochs + config.warmup,
)
for epoch in range(start_epoch, total_epoch):
w_scheduler.update(epoch, 0.0)
need_time = "Time Left: {:}".format(
convert_secs2time(epoch_time.val * (total_epoch - epoch), True)
)
epoch_str = "{:03d}-{:03d}".format(epoch, total_epoch)
logger.log(
"\n[Search the {:}-th epoch] {:}, LR={:}".format(
epoch_str, need_time, min(w_scheduler.get_lr())
)
)
search_w_loss, search_w_top1, search_w_top5 = search_func(
search_loader,
network,
criterion,
w_scheduler,
w_optimizer,
a_optimizer,
epoch_str,
xargs.print_freq,
logger,
xargs.gradient_clip,
)
search_time.update(time.time() - start_time)
logger.log(
"[{:}] searching : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%, time-cost={:.1f} s".format(
epoch_str, search_w_loss, search_w_top1, search_w_top5, search_time.sum
)
)
valid_a_loss, valid_a_top1, valid_a_top5 = valid_func(
valid_loader, network, criterion
)
logger.log(
"[{:}] evaluate : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%".format(
epoch_str, valid_a_loss, valid_a_top1, valid_a_top5
)
)
# check the best accuracy
valid_accuracies[epoch] = valid_a_top1
if valid_a_top1 > valid_accuracies["best"]:
valid_accuracies["best"] = valid_a_top1
genotypes["best"] = search_model.genotype()
find_best = True
else:
find_best = False
genotypes[epoch] = search_model.genotype()
logger.log(
"<<<--->>> The {:}-th epoch : {:}".format(epoch_str, genotypes[epoch])
)
# save checkpoint
save_path = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(xargs),
"search_model": search_model.state_dict(),
"w_optimizer": w_optimizer.state_dict(),
"a_optimizer": a_optimizer.state_dict(),
"w_scheduler": w_scheduler.state_dict(),
"genotypes": genotypes,
"valid_accuracies": valid_accuracies,
},
model_base_path,
logger,
)
last_info = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(args),
"last_checkpoint": save_path,
},
logger.path("info"),
logger,
)
if find_best:
logger.log(
"<<<--->>> The {:}-th epoch : find the highest validation accuracy : {:.2f}%.".format(
epoch_str, valid_a_top1
)
)
copy_checkpoint(model_base_path, model_best_path, logger)
with torch.no_grad():
# logger.log('arch-parameters :\n{:}'.format( nn.functional.softmax(search_model.arch_parameters, dim=-1).cpu() ))
logger.log("{:}".format(search_model.show_alphas()))
if api is not None:
logger.log("{:}".format(api.query_by_arch(genotypes[epoch], "200")))
# measure elapsed time
epoch_time.update(time.time() - start_time)
start_time = time.time()
logger.log("\n" + "-" * 100)
logger.log(
"DARTS-V1 : run {:} epochs, cost {:.1f} s, last-geno is {:}.".format(
total_epoch, search_time.sum, genotypes[total_epoch - 1]
)
)
if api is not None:
logger.log("{:}".format(api.query_by_arch(genotypes[total_epoch - 1], "200")))
logger.close()
def main(xargs):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
torch.set_num_threads(xargs.workers)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
train_data, valid_data, xshape, class_num = get_datasets(
xargs.dataset, xargs.data_path, -1
)
config = load_config(
xargs.config_path, {"class_num": class_num, "xshape": xshape}, logger
)
search_loader, _, valid_loader = get_nas_search_loaders(
train_data,
valid_data,
xargs.dataset,
"configs/nas-benchmark/",
(config.batch_size, config.test_batch_size),
xargs.workers,
)
logger.log(
"||||||| {:10s} ||||||| Search-Loader-Num={:}, Valid-Loader-Num={:}, batch size={:}".format(
xargs.dataset, len(search_loader), len(valid_loader), config.batch_size
)
)
logger.log("||||||| {:10s} ||||||| Config={:}".format(xargs.dataset, config))
search_space = get_search_spaces("cell", xargs.search_space_name)
model_config = dict2config(
{
"name": "RANDOM",
"C": xargs.channel,
"N": xargs.num_cells,
"max_nodes": xargs.max_nodes,
"num_classes": class_num,
"space": search_space,
"affine": False,
"track_running_stats": bool(xargs.track_running_stats),
},
None,
)
search_model = get_cell_based_tiny_net(model_config)
w_optimizer, w_scheduler, criterion = get_optim_scheduler(
search_model.parameters(), config
)
logger.log("w-optimizer : {:}".format(w_optimizer))
logger.log("w-scheduler : {:}".format(w_scheduler))
logger.log("criterion : {:}".format(criterion))
if xargs.arch_nas_dataset is None:
api = None
else:
api = API(xargs.arch_nas_dataset)
logger.log("{:} create API = {:} done".format(time_string(), api))
last_info, model_base_path, model_best_path = (
logger.path("info"),
logger.path("model"),
logger.path("best"),
)
network, criterion = torch.nn.DataParallel(search_model).cuda(), criterion.cuda()
if last_info.exists(): # automatically resume from previous checkpoint
logger.log(
"=> loading checkpoint of the last-info '{:}' start".format(last_info)
)
last_info = torch.load(last_info)
start_epoch = last_info["epoch"]
checkpoint = torch.load(last_info["last_checkpoint"])
genotypes = checkpoint["genotypes"]
valid_accuracies = checkpoint["valid_accuracies"]
search_model.load_state_dict(checkpoint["search_model"])
w_scheduler.load_state_dict(checkpoint["w_scheduler"])
w_optimizer.load_state_dict(checkpoint["w_optimizer"])
logger.log(
"=> loading checkpoint of the last-info '{:}' start with {:}-th epoch.".format(
last_info, start_epoch
)
)
else:
logger.log("=> do not find the last-info file : {:}".format(last_info))
start_epoch, valid_accuracies, genotypes = 0, {"best": -1}, {}
# start training
start_time, search_time, epoch_time, total_epoch = (
time.time(),
AverageMeter(),
AverageMeter(),
config.epochs + config.warmup,
)
for epoch in range(start_epoch, total_epoch):
w_scheduler.update(epoch, 0.0)
need_time = "Time Left: {:}".format(
convert_secs2time(epoch_time.val * (total_epoch - epoch), True)
)
epoch_str = "{:03d}-{:03d}".format(epoch, total_epoch)
logger.log(
"\n[Search the {:}-th epoch] {:}, LR={:}".format(
epoch_str, need_time, min(w_scheduler.get_lr())
)
)
# selected_arch = search_find_best(valid_loader, network, criterion, xargs.select_num)
search_w_loss, search_w_top1, search_w_top5 = search_func(
search_loader,
network,
criterion,
w_scheduler,
w_optimizer,
epoch_str,
xargs.print_freq,
logger,
)
search_time.update(time.time() - start_time)
logger.log(
"[{:}] searching : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%, time-cost={:.1f} s".format(
epoch_str, search_w_loss, search_w_top1, search_w_top5, search_time.sum
)
)
valid_a_loss, valid_a_top1, valid_a_top5 = valid_func(
valid_loader, network, criterion
)
logger.log(
"[{:}] evaluate : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%".format(
epoch_str, valid_a_loss, valid_a_top1, valid_a_top5
)
)
cur_arch, cur_valid_acc = search_find_best(
valid_loader, network, xargs.select_num
)
logger.log(
"[{:}] find-the-best : {:}, accuracy@1={:.2f}%".format(
epoch_str, cur_arch, cur_valid_acc
)
)
genotypes[epoch] = cur_arch
# check the best accuracy
valid_accuracies[epoch] = valid_a_top1
if valid_a_top1 > valid_accuracies["best"]:
valid_accuracies["best"] = valid_a_top1
find_best = True
else:
find_best = False
# save checkpoint
save_path = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(xargs),
"search_model": search_model.state_dict(),
"w_optimizer": w_optimizer.state_dict(),
"w_scheduler": w_scheduler.state_dict(),
"genotypes": genotypes,
"valid_accuracies": valid_accuracies,
},
model_base_path,
logger,
)
last_info = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(args),
"last_checkpoint": save_path,
},
logger.path("info"),
logger,
)
if find_best:
logger.log(
"<<<--->>> The {:}-th epoch : find the highest validation accuracy : {:.2f}%.".format(
epoch_str, valid_a_top1
)
)
copy_checkpoint(model_base_path, model_best_path, logger)
if api is not None:
logger.log("{:}".format(api.query_by_arch(genotypes[epoch], "200")))
# measure elapsed time
epoch_time.update(time.time() - start_time)
start_time = time.time()
logger.log("\n" + "-" * 200)
logger.log("Pre-searching costs {:.1f} s".format(search_time.sum))
start_time = time.time()
best_arch, best_acc = search_find_best(valid_loader, network, xargs.select_num)
search_time.update(time.time() - start_time)
logger.log(
"RANDOM-NAS finds the best one : {:} with accuracy={:.2f}%, with {:.1f} s.".format(
best_arch, best_acc, search_time.sum
)
)
if api is not None:
logger.log("{:}".format(api.query_by_arch(best_arch, "200")))
logger.close()
def main(args):
prepare_seed(args.rand_seed)
logger = prepare_logger(args)
env = get_synthetic_env(mode="test", version=args.env_version)
model_kwargs = dict(
config=dict(model_type="norm_mlp"),
input_dim=env.meta_info["input_dim"],
output_dim=env.meta_info["output_dim"],
hidden_dims=[args.hidden_dim] * 2,
act_cls="relu",
norm_cls="layer_norm_1d",
)
logger.log("The total enviornment: {:}".format(env))
w_containers = dict()
if env.meta_info["task"] == "regression":
criterion = torch.nn.MSELoss()
metric_cls = MSEMetric
elif env.meta_info["task"] == "classification":
criterion = torch.nn.CrossEntropyLoss()
metric_cls = Top1AccMetric
else:
raise ValueError("This task ({:}) is not supported.".format(
all_env.meta_info["task"]))
def finetune(index):
seq_times = env.get_seq_times(index, args.seq_length)
_, (allxs, allys) = env.seq_call(seq_times)
allxs, allys = allxs.view(-1, allxs.shape[-1]), allys.view(-1, 1)
if env.meta_info["task"] == "classification":
allys = allys.view(-1)
historical_x, historical_y = allxs.to(args.device), allys.to(
args.device)
model = get_model(**model_kwargs)
model = model.to(args.device)
optimizer = torch.optim.Adam(model.parameters(),
lr=args.init_lr,
amsgrad=True)
lr_scheduler = torch.optim.lr_scheduler.MultiStepLR(
optimizer,
milestones=[
int(args.epochs * 0.25),
int(args.epochs * 0.5),
int(args.epochs * 0.75),
],
gamma=0.3,
)
train_metric = metric_cls(True)
best_loss, best_param = None, None
for _iepoch in range(args.epochs):
preds = model(historical_x)
optimizer.zero_grad()
loss = criterion(preds, historical_y)
loss.backward()
optimizer.step()
lr_scheduler.step()
# save best
if best_loss is None or best_loss > loss.item():
best_loss = loss.item()
best_param = copy.deepcopy(model.state_dict())
model.load_state_dict(best_param)
# model.analyze_weights()
with torch.no_grad():
train_metric(preds, historical_y)
train_results = train_metric.get_info()
return train_results, model
metric = metric_cls(True)
per_timestamp_time, start_time = AverageMeter(), time.time()
for idx, (future_time, (future_x, future_y)) in enumerate(env):
need_time = "Time Left: {:}".format(
convert_secs2time(per_timestamp_time.avg * (len(env) - idx), True))
logger.log("[{:}]".format(time_string()) +
" [{:04d}/{:04d}]".format(idx, len(env)) + " " + need_time)
# train the same data
train_results, model = finetune(idx)
# build optimizer
xmetric = ComposeMetric(metric_cls(True), SaveMetric())
future_x, future_y = future_x.to(args.device), future_y.to(args.device)
future_y_hat = model(future_x)
future_loss = criterion(future_y_hat, future_y)
metric(future_y_hat, future_y)
log_str = ("[{:}]".format(time_string()) +
" [{:04d}/{:04d}]".format(idx, len(env)) +
" train-score: {:.5f}, eval-score: {:.5f}".format(
train_results["score"],
metric.get_info()["score"]))
logger.log(log_str)
logger.log("")
per_timestamp_time.update(time.time() - start_time)
start_time = time.time()
save_checkpoint(
{"w_containers": w_containers},
logger.path(None) / "final-ckp.pth",
logger,
)
logger.log("-" * 200 + "\n")
logger.close()
return metric.get_info()["score"]
def main(args):
prepare_seed(args.rand_seed)
logger = prepare_logger(args)
env = get_synthetic_env(mode=None, version=args.env_version)
model_kwargs = dict(
config=dict(model_type="norm_mlp"),
input_dim=env.meta_info["input_dim"],
output_dim=env.meta_info["output_dim"],
hidden_dims=[args.hidden_dim] * 2,
act_cls="relu",
norm_cls="layer_norm_1d",
)
logger.log("The total enviornment: {:}".format(env))
w_containers = dict()
if env.meta_info["task"] == "regression":
criterion = torch.nn.MSELoss()
metric_cls = MSEMetric
elif env.meta_info["task"] == "classification":
criterion = torch.nn.CrossEntropyLoss()
metric_cls = Top1AccMetric
else:
raise ValueError("This task ({:}) is not supported.".format(
all_env.meta_info["task"]))
per_timestamp_time, start_time = AverageMeter(), time.time()
for idx, (future_time, (future_x, future_y)) in enumerate(env):
need_time = "Time Left: {:}".format(
convert_secs2time(per_timestamp_time.avg * (len(env) - idx), True))
logger.log("[{:}]".format(time_string()) +
" [{:04d}/{:04d}]".format(idx, len(env)) + " " + need_time)
# train the same data
historical_x = future_x.to(args.device)
historical_y = future_y.to(args.device)
# build model
model = get_model(**model_kwargs)
model = model.to(args.device)
if idx == 0:
print(model)
# build optimizer
optimizer = torch.optim.Adam(model.parameters(),
lr=args.init_lr,
amsgrad=True)
lr_scheduler = torch.optim.lr_scheduler.MultiStepLR(
optimizer,
milestones=[
int(args.epochs * 0.25),
int(args.epochs * 0.5),
int(args.epochs * 0.75),
],
gamma=0.3,
)
train_metric = metric_cls(True)
best_loss, best_param = None, None
for _iepoch in range(args.epochs):
preds = model(historical_x)
optimizer.zero_grad()
loss = criterion(preds, historical_y)
loss.backward()
optimizer.step()
lr_scheduler.step()
# save best
if best_loss is None or best_loss > loss.item():
best_loss = loss.item()
best_param = copy.deepcopy(model.state_dict())
model.load_state_dict(best_param)
model.analyze_weights()
with torch.no_grad():
train_metric(preds, historical_y)
train_results = train_metric.get_info()
xmetric = ComposeMetric(metric_cls(True), SaveMetric())
eval_dataset = torch.utils.data.TensorDataset(future_x.to(args.device),
future_y.to(args.device))
eval_loader = torch.utils.data.DataLoader(eval_dataset,
batch_size=args.batch_size,
shuffle=False,
num_workers=0)
results = basic_eval_fn(eval_loader, model, xmetric, logger)
log_str = ("[{:}]".format(time_string()) +
" [{:04d}/{:04d}]".format(idx, len(env)) +
" train-score: {:.5f}, eval-score: {:.5f}".format(
train_results["score"], results["score"]))
logger.log(log_str)
save_path = logger.path(None) / "{:04d}-{:04d}.pth".format(
idx, len(env))
w_containers[idx] = model.get_w_container().no_grad_clone()
save_checkpoint(
{
"model_state_dict": model.state_dict(),
"model": model,
"index": idx,
"timestamp": future_time.item(),
},
save_path,
logger,
)
logger.log("")
per_timestamp_time.update(time.time() - start_time)
start_time = time.time()
save_checkpoint(
{"w_containers": w_containers},
logger.path(None) / "final-ckp.pth",
logger,
)
logger.log("-" * 200 + "\n")
logger.close()
def main(args):
prepare_seed(args.rand_seed)
logger = prepare_logger(args)
train_env = get_synthetic_env(mode="train", version=args.env_version)
valid_env = get_synthetic_env(mode="valid", version=args.env_version)
trainval_env = get_synthetic_env(mode="trainval", version=args.env_version)
test_env = get_synthetic_env(mode="test", version=args.env_version)
all_env = get_synthetic_env(mode=None, version=args.env_version)
logger.log("The training enviornment: {:}".format(train_env))
logger.log("The validation enviornment: {:}".format(valid_env))
logger.log("The trainval enviornment: {:}".format(trainval_env))
logger.log("The total enviornment: {:}".format(all_env))
logger.log("The test enviornment: {:}".format(test_env))
model_kwargs = dict(
config=dict(model_type="norm_mlp"),
input_dim=all_env.meta_info["input_dim"],
output_dim=all_env.meta_info["output_dim"],
hidden_dims=[args.hidden_dim] * 2,
act_cls="relu",
norm_cls="layer_norm_1d",
)
model = get_model(**model_kwargs)
model = model.to(args.device)
if all_env.meta_info["task"] == "regression":
criterion = torch.nn.MSELoss()
metric_cls = MSEMetric
elif all_env.meta_info["task"] == "classification":
criterion = torch.nn.CrossEntropyLoss()
metric_cls = Top1AccMetric
else:
raise ValueError(
"This task ({:}) is not supported.".format(all_env.meta_info["task"])
)
maml = MAML(
model, criterion, args.epochs, args.meta_lr, args.inner_lr, args.inner_step
)
# meta-training
last_success_epoch = 0
per_epoch_time, start_time = AverageMeter(), time.time()
for iepoch in range(args.epochs):
need_time = "Time Left: {:}".format(
convert_secs2time(per_epoch_time.avg * (args.epochs - iepoch), True)
)
head_str = (
"[{:}] [{:04d}/{:04d}] ".format(time_string(), iepoch, args.epochs)
+ need_time
)
maml.zero_grad()
meta_losses = []
for ibatch in range(args.meta_batch):
future_idx = random.randint(0, len(trainval_env) - 1)
future_t, (future_x, future_y) = trainval_env[future_idx]
# -->>
seq_times = trainval_env.get_seq_times(future_idx, args.seq_length)
_, (allxs, allys) = trainval_env.seq_call(seq_times)
allxs, allys = allxs.view(-1, allxs.shape[-1]), allys.view(-1, 1)
if trainval_env.meta_info["task"] == "classification":
allys = allys.view(-1)
historical_x, historical_y = allxs.to(args.device), allys.to(args.device)
future_container = maml.adapt(historical_x, historical_y)
future_x, future_y = future_x.to(args.device), future_y.to(args.device)
future_y_hat = maml.predict(future_x, future_container)
future_loss = maml.criterion(future_y_hat, future_y)
meta_losses.append(future_loss)
meta_loss = torch.stack(meta_losses).mean()
meta_loss.backward()
maml.step()
logger.log(head_str + " meta-loss: {:.4f}".format(meta_loss.item()))
success, best_score = maml.save_best(-meta_loss.item())
if success:
logger.log("Achieve the best with best_score = {:.3f}".format(best_score))
save_checkpoint(maml.state_dict(), logger.path("model"), logger)
last_success_epoch = iepoch
if iepoch - last_success_epoch >= args.early_stop_thresh:
logger.log("Early stop at {:}".format(iepoch))
break
per_epoch_time.update(time.time() - start_time)
start_time = time.time()
# meta-test
maml.load_best()
def finetune(index):
seq_times = test_env.get_seq_times(index, args.seq_length)
_, (allxs, allys) = test_env.seq_call(seq_times)
allxs, allys = allxs.view(-1, allxs.shape[-1]), allys.view(-1, 1)
if test_env.meta_info["task"] == "classification":
allys = allys.view(-1)
historical_x, historical_y = allxs.to(args.device), allys.to(args.device)
future_container = maml.adapt(historical_x, historical_y)
historical_y_hat = maml.predict(historical_x, future_container)
train_metric = metric_cls(True)
# model.analyze_weights()
with torch.no_grad():
train_metric(historical_y_hat, historical_y)
train_results = train_metric.get_info()
return train_results, future_container
metric = metric_cls(True)
per_timestamp_time, start_time = AverageMeter(), time.time()
for idx, (future_time, (future_x, future_y)) in enumerate(test_env):
need_time = "Time Left: {:}".format(
convert_secs2time(per_timestamp_time.avg * (len(test_env) - idx), True)
)
logger.log(
"[{:}]".format(time_string())
+ " [{:04d}/{:04d}]".format(idx, len(test_env))
+ " "
+ need_time
)
# build optimizer
train_results, future_container = finetune(idx)
future_x, future_y = future_x.to(args.device), future_y.to(args.device)
future_y_hat = maml.predict(future_x, future_container)
future_loss = criterion(future_y_hat, future_y)
metric(future_y_hat, future_y)
log_str = (
"[{:}]".format(time_string())
+ " [{:04d}/{:04d}]".format(idx, len(test_env))
+ " train-score: {:.5f}, eval-score: {:.5f}".format(
train_results["score"], metric.get_info()["score"]
)
)
logger.log(log_str)
logger.log("")
per_timestamp_time.update(time.time() - start_time)
start_time = time.time()
logger.log("-" * 200 + "\n")
logger.close()
def evaluate_for_seed(arch_config, opt_config, train_loader, valid_loaders,
seed: int, logger):
"""A modular function to train and evaluate a single network, using the given random seed and optimization config with the provided loaders."""
prepare_seed(seed) # random seed
net = get_cell_based_tiny_net(arch_config)
# net = TinyNetwork(arch_config['channel'], arch_config['num_cells'], arch, config.class_num)
flop, param = get_model_infos(net, opt_config.xshape)
logger.log("Network : {:}".format(net.get_message()), False)
logger.log(
"{:} Seed-------------------------- {:} --------------------------".
format(time_string(), seed))
logger.log("FLOP = {:} MB, Param = {:} MB".format(flop, param))
# train and valid
optimizer, scheduler, criterion = get_optim_scheduler(
net.parameters(), opt_config)
default_device = torch.cuda.current_device()
network = torch.nn.DataParallel(net,
device_ids=[default_device
]).cuda(device=default_device)
criterion = criterion.cuda(device=default_device)
# start training
start_time, epoch_time, total_epoch = (
time.time(),
AverageMeter(),
opt_config.epochs + opt_config.warmup,
)
(
train_losses,
train_acc1es,
train_acc5es,
valid_losses,
valid_acc1es,
valid_acc5es,
) = ({}, {}, {}, {}, {}, {})
train_times, valid_times, lrs = {}, {}, {}
for epoch in range(total_epoch):
scheduler.update(epoch, 0.0)
lr = min(scheduler.get_lr())
train_loss, train_acc1, train_acc5, train_tm = procedure(
train_loader, network, criterion, scheduler, optimizer, "train")
train_losses[epoch] = train_loss
train_acc1es[epoch] = train_acc1
train_acc5es[epoch] = train_acc5
train_times[epoch] = train_tm
lrs[epoch] = lr
with torch.no_grad():
for key, xloder in valid_loaders.items():
valid_loss, valid_acc1, valid_acc5, valid_tm = procedure(
xloder, network, criterion, None, None, "valid")
valid_losses["{:}@{:}".format(key, epoch)] = valid_loss
valid_acc1es["{:}@{:}".format(key, epoch)] = valid_acc1
valid_acc5es["{:}@{:}".format(key, epoch)] = valid_acc5
valid_times["{:}@{:}".format(key, epoch)] = valid_tm
# measure elapsed time
epoch_time.update(time.time() - start_time)
start_time = time.time()
need_time = "Time Left: {:}".format(
convert_secs2time(epoch_time.avg * (total_epoch - epoch - 1),
True))
logger.log(
"{:} {:} epoch={:03d}/{:03d} :: Train [loss={:.5f}, acc@1={:.2f}%, acc@5={:.2f}%] Valid [loss={:.5f}, acc@1={:.2f}%, acc@5={:.2f}%], lr={:}"
.format(
time_string(),
need_time,
epoch,
total_epoch,
train_loss,
train_acc1,
train_acc5,
valid_loss,
valid_acc1,
valid_acc5,
lr,
))
info_seed = {
"flop": flop,
"param": param,
"arch_config": arch_config._asdict(),
"opt_config": opt_config._asdict(),
"total_epoch": total_epoch,
"train_losses": train_losses,
"train_acc1es": train_acc1es,
"train_acc5es": train_acc5es,
"train_times": train_times,
"valid_losses": valid_losses,
"valid_acc1es": valid_acc1es,
"valid_acc5es": valid_acc5es,
"valid_times": valid_times,
"learning_rates": lrs,
"net_state_dict": net.state_dict(),
"net_string": "{:}".format(net),
"finish-train": True,
}
return info_seed
def main(xargs, api):
torch.set_num_threads(4)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
logger.log("{:} use api : {:}".format(time_string(), api))
api.reset_time()
search_space = get_search_spaces(xargs.search_space, "nats-bench")
if xargs.search_space == "tss":
cs = get_topology_config_space(search_space)
config2structure = config2topology_func()
else:
cs = get_size_config_space(search_space)
config2structure = config2size_func(search_space)
hb_run_id = "0"
NS = hpns.NameServer(run_id=hb_run_id, host="localhost", port=0)
ns_host, ns_port = NS.start()
num_workers = 1
workers = []
for i in range(num_workers):
w = MyWorker(
nameserver=ns_host,
nameserver_port=ns_port,
convert_func=config2structure,
dataset=xargs.dataset,
api=api,
run_id=hb_run_id,
id=i,
)
w.run(background=True)
workers.append(w)
start_time = time.time()
bohb = BOHB(
configspace=cs,
run_id=hb_run_id,
eta=3,
min_budget=1,
max_budget=12,
nameserver=ns_host,
nameserver_port=ns_port,
num_samples=xargs.num_samples,
random_fraction=xargs.random_fraction,
bandwidth_factor=xargs.bandwidth_factor,
ping_interval=10,
min_bandwidth=xargs.min_bandwidth,
)
results = bohb.run(xargs.n_iters, min_n_workers=num_workers)
bohb.shutdown(shutdown_workers=True)
NS.shutdown()
# print('There are {:} runs.'.format(len(results.get_all_runs())))
# workers[0].total_times
# workers[0].trajectory
current_best_index = []
for idx in range(len(workers[0].trajectory)):
trajectory = workers[0].trajectory[:idx + 1]
arch = max(trajectory, key=lambda x: x[0])[1]
current_best_index.append(api.query_index_by_arch(arch))
best_arch = max(workers[0].trajectory, key=lambda x: x[0])[1]
logger.log("Best found configuration: {:} within {:.3f} s".format(
best_arch, workers[0].total_times[-1]))
info = api.query_info_str_by_arch(
best_arch, "200" if xargs.search_space == "tss" else "90")
logger.log("{:}".format(info))
logger.log("-" * 100)
logger.close()
return logger.log_dir, current_best_index, workers[0].total_times
def main(args):
prepare_seed(args.rand_seed)
logger = prepare_logger(args)
train_env = get_synthetic_env(mode="train", version=args.env_version)
valid_env = get_synthetic_env(mode="valid", version=args.env_version)
trainval_env = get_synthetic_env(mode="trainval", version=args.env_version)
test_env = get_synthetic_env(mode="test", version=args.env_version)
all_env = get_synthetic_env(mode=None, version=args.env_version)
logger.log("The training enviornment: {:}".format(train_env))
logger.log("The validation enviornment: {:}".format(valid_env))
logger.log("The trainval enviornment: {:}".format(trainval_env))
logger.log("The total enviornment: {:}".format(all_env))
logger.log("The test enviornment: {:}".format(test_env))
model_kwargs = dict(
config=dict(model_type="norm_mlp"),
input_dim=all_env.meta_info["input_dim"],
output_dim=all_env.meta_info["output_dim"],
hidden_dims=[args.hidden_dim] * 2,
act_cls="relu",
norm_cls="layer_norm_1d",
)
base_model = get_model(**model_kwargs)
base_model = base_model.to(args.device)
if all_env.meta_info["task"] == "regression":
criterion = torch.nn.MSELoss()
metric = MSEMetric(True)
elif all_env.meta_info["task"] == "classification":
criterion = torch.nn.CrossEntropyLoss()
metric = Top1AccMetric(True)
else:
raise ValueError("This task ({:}) is not supported.".format(
all_env.meta_info["task"]))
shape_container = base_model.get_w_container().to_shape_container()
# pre-train the hypernetwork
timestamps = trainval_env.get_timestamp(None)
if args.ablation is None:
MetaModel_cls = MetaModelV1
elif args.ablation == "old":
MetaModel_cls = MetaModel_TraditionalAtt
else:
raise ValueError("Unknown ablation : {:}".format(args.ablation))
meta_model = MetaModel_cls(
shape_container,
args.layer_dim,
args.time_dim,
timestamps,
seq_length=args.seq_length,
interval=trainval_env.time_interval,
)
meta_model = meta_model.to(args.device)
logger.log("The base-model has {:} weights.".format(base_model.numel()))
logger.log("The meta-model has {:} weights.".format(meta_model.numel()))
logger.log("The base-model is\n{:}".format(base_model))
logger.log("The meta-model is\n{:}".format(meta_model))
meta_train_procedure(base_model, meta_model, criterion, trainval_env, args,
logger)
# try to evaluate once
# online_evaluate(train_env, meta_model, base_model, criterion, args, logger)
# online_evaluate(valid_env, meta_model, base_model, criterion, args, logger)
"""
w_containers, loss_meter = online_evaluate(
all_env, meta_model, base_model, criterion, args, logger, True
)
logger.log("In this enviornment, the total loss-meter is {:}".format(loss_meter))
"""
w_containers_care_adapt, loss_adapt_v1, metric_adapt_v1 = online_evaluate(
test_env, meta_model, base_model, criterion, metric, args, logger,
True, False)
w_containers_easy_adapt, loss_adapt_v2, metric_adapt_v2 = online_evaluate(
test_env, meta_model, base_model, criterion, metric, args, logger,
True, True)
logger.log("[Refine-Adapt] loss = {:.6f}, metric = {:.6f}".format(
loss_adapt_v1, metric_adapt_v1))
logger.log("[Easy-Adapt] loss = {:.6f}, metric = {:.6f}".format(
loss_adapt_v2, metric_adapt_v2))
save_checkpoint(
{
"w_containers_care_adapt": w_containers_care_adapt,
"w_containers_easy_adapt": w_containers_easy_adapt,
"test_loss_adapt_v1": loss_adapt_v1,
"test_loss_adapt_v2": loss_adapt_v2,
"test_metric_adapt_v1": metric_adapt_v1,
"test_metric_adapt_v2": metric_adapt_v2,
},
logger.path(None) / "final-ckp-{:}.pth".format(args.rand_seed),
logger,
)
logger.log("-" * 200 + "\n")
logger.close()
def main(xargs):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
torch.set_num_threads(xargs.workers)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
train_data, valid_data, xshape, class_num = get_datasets(
xargs.dataset, xargs.data_path, -1
)
# config_path = 'configs/nas-benchmark/algos/GDAS.config'
config = load_config(
xargs.config_path, {"class_num": class_num, "xshape": xshape}, logger
)
search_loader, _, valid_loader = get_nas_search_loaders(
train_data,
valid_data,
xargs.dataset,
"../../configs/nas-benchmark/",
config.batch_size,
xargs.workers,
)
logger.log(
"||||||| {:10s} ||||||| Search-Loader-Num={:}, batch size={:}".format(
xargs.dataset, len(search_loader), config.batch_size
)
)
logger.log("||||||| {:10s} ||||||| Config={:}".format(xargs.dataset, config))
search_space = get_search_spaces("cell", xargs.search_space_name)
if xargs.model_config is None:
model_config = dict2config(
{
"name": "GDAS",
"C": xargs.channel,
"N": xargs.num_cells,
"max_nodes": xargs.max_nodes,
"num_classes": class_num,
"space": search_space,
"affine": False,
"track_running_stats": bool(xargs.track_running_stats),
},
None,
)
else:
model_config = load_config(
xargs.model_config,
{
"num_classes": class_num,
"space": search_space,
"affine": False,
"track_running_stats": bool(xargs.track_running_stats),
},
None,
)
search_model = {}
w_optimizer = {}
a_optimizer = {}
w_scheduler = {}
a_scheduler = {}
valid_accuracies, genotypes = {}, {}
search_globle_model = get_cell_based_tiny_net(model_config).cuda()
for one in search_loader:
search_model[one] = get_cell_based_tiny_net(model_config).cuda()
search_model[one].load_state_dict(search_globle_model.state_dict())
w_optimizer[one], w_scheduler[one], criterion = get_optim_scheduler(search_model[one].parameters(), config)
if args.baseline == "dl":
w_optimizer[one] = dlOptimizer(search_model[one].get_weights(), xargs.arch_learning_rate, 0.1)
a_optimizer[one] = torch.optim.Adam(search_model[one].get_alphas(), lr=xargs.arch_learning_rate, betas=(0.5, 0.999), weight_decay=xargs.arch_weight_decay,)
valid_accuracies[one], genotypes[one] = (
{"best": -1},
{-1: search_model[one].genotype()},
)
criterion = criterion.cuda()
logger.log("search-model :\n{:}".format(search_globle_model))
logger.log("model-config : {:}".format(model_config))
# logger.log("w-optimizer : {:}".format(w_optimizer))
# logger.log("a-optimizer : {:}".format(a_optimizer))
# logger.log("w-scheduler : {:}".format(w_scheduler))
# logger.log("criterion : {:}".format(criterion))
flop, param = get_model_infos(search_globle_model, xshape)
logger.log("FLOP = {:.2f} M, Params = {:.2f} MB".format(flop, param))
logger.log("search-space [{:} ops] : {:}".format(len(search_space), search_space))
if xargs.arch_nas_dataset is None:
api = None
else:
api = API(xargs.arch_nas_dataset)
logger.log("{:} create API = {:} done".format(time_string(), api))
last_info, model_base_path, model_best_path = (
logger.path("info"),
logger.path("model"),
logger.path("best"),
)
# if last_info.exists(): # automatically resume from previous checkpoint
# logger.log(
# "=> loading checkpoint of the last-info '{:}' start".format(last_info)
# )
# last_info = torch.load(last_info)
# start_epoch = last_info["epoch"]
# checkpoint = torch.load(last_info["last_checkpoint"])
# genotypes = checkpoint["genotypes"]
# valid_accuracies = checkpoint["valid_accuracies"]
# search_model.load_state_dict(checkpoint["search_model"])
# w_scheduler.load_state_dict(checkpoint["w_scheduler"])
# w_optimizer.load_state_dict(checkpoint["w_optimizer"])
# a_optimizer.load_state_dict(checkpoint["a_optimizer"])
# logger.log(
# "=> loading checkpoint of the last-info '{:}' start with {:}-th epoch.".format(
# last_info, start_epoch
# )
# )
# else:
logger.log("=> do not find the last-info file : {:}".format(last_info))
start_epoch = 0
# start training
start_time, search_time, epoch_time, total_epoch = (
time.time(),
AverageMeter(),
AverageMeter(),
config.epochs + config.warmup,
)
local_epoch = args.local_epoch
for epoch in range(start_epoch, total_epoch):
for user in w_scheduler:
w_scheduler[user].update(epoch, 0.0)
search_model[user].set_tau(
xargs.tau_max - (xargs.tau_max - xargs.tau_min) * epoch / (total_epoch - 1)
)
# need_time = "Time Left: {:}".format(
# convert_secs2time(epoch_time.val * (total_epoch - epoch), True)
# )
epoch_str = "{:03d}-{:03d}".format(epoch, total_epoch)
# logger.log(
# "\n[Search the {:}-th epoch] {:}, tau={:}, LR={:}".format(
# epoch_str, need_time, search_model.get_tau(), min(w_scheduler.get_lr())
# )
# )
weight_list = []
acc_list = []
test_acc_list = []
for user in search_loader:
( search_w_loss,
search_w_top1,
search_w_top5,
valid_a_loss,
valid_a_top1,
valid_a_top5,
weight
) = search_func(
search_loader[user],
search_model[user],
search_globle_model,
criterion,
w_scheduler[user],
w_optimizer[user],
a_optimizer[user],
epoch_str,
xargs.print_freq,
logger,
local_epoch
)
logger.log(
"User {} : [{:}] searching : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%, time-cost={:.1f} s".format(
user, epoch_str, search_w_loss, search_w_top1, search_w_top5, search_time.sum
)
)
logger.log(
"User {} : [{:}] evaluate : loss={:.2f}, accuracy@1={:.2f}%, accuracy@5={:.2f}%".format(
user, epoch_str, valid_a_loss, valid_a_top1, valid_a_top5
)
)
weight_list.append(weight)
acc_list.append(valid_a_top1)
valid_accuracies[user][epoch] = valid_a_top1
genotypes[user][epoch] = search_model[user].genotype()
# loss, top1acc, top5acc = test_func(valid_loader[user], search_model[user], criterion)
# test_acc_list.append(top1acc)
# logger.log(
# "||||---|||| The {epoch:}-th epoch, user {user}, valid loss={loss:.3f}, valid_top1={top1:.2f}%, valid_top5={top5:.2f}%".format(
# epoch=epoch_str, user=user, loss=loss, top1=top1acc, top5=top5acc, )
# )
info_dict = {
"{}user_w_loss".format(user): search_w_loss,
"{}user_w_top1".format(user): search_w_top1,
"{}user_w_top5".format(user): search_w_top5,
"{}user_a_loss".format(user): valid_a_loss,
"{}user_a_top1".format(user): valid_a_top1,
"{}user_a_top5".format(user): valid_a_top5,
# "{}user_test_loss".format(user): search_w_loss,
# "{}user_test_top1".format(user): search_w_loss,
# "{}user_test_top5".format(user): search_w_loss,
}
wandb.log(info_dict)
info_dict = {
"epoch": epoch,
"average_valid_acc": np.average(acc_list),
"average_test_acc": np.average(test_acc_list)
}
wandb.log(info_dict)
arch_personalize = args.personalize_arch
weight_average, arch_normal_list, arch_reduce_list = average_weights(weight_list, arch_personalize)
for user in search_model:
if arch_personalize:
tep = copy.deepcopy(weight_average)
tep['arch_normal_parameters'] = arch_normal_list[user]
tep['arch_reduce_parameters'] = arch_reduce_list[user]
search_model[user].load_state_dict(tep)
else:
search_model[user].load_state_dict(weight_average)
logger.log(
"<<<--->>> The {:}-th epoch : {:}".format(epoch_str, search_model[user].genotype())
)
search_globle_model.load_state_dict(weight_average)
search_time.update(time.time() - start_time)
# check the best accuracy
# if valid_a_top1 > valid_accuracies["best"]:
# valid_accuracies["best"] = valid_a_top1
# genotypes["best"] = search_model.genotype()
# find_best = True
# else:
# find_best = False
# save checkpoint
# save_path = save_checkpoint(
# {
# "epoch": epoch + 1,
# "args": deepcopy(xargs),
# "search_model": search_model.state_dict(),
# "w_optimizer": w_optimizer.state_dict(),
# "a_optimizer": a_optimizer.state_dict(),
# "w_scheduler": w_scheduler.state_dict(),
# "genotypes": genotypes,
# "valid_accuracies": valid_accuracies,
# },
# model_base_path,
# logger,
# )
# last_info = save_checkpoint(
# {
# "epoch": epoch + 1,
# "args": deepcopy(args),
# "last_checkpoint": save_path,
# },
# logger.path("info"),
# logger,
# )
# if find_best:
# logger.log(
# "<<<--->>> The {:}-th epoch : find the highest validation accuracy : {:.2f}%.".format(
# epoch_str, valid_a_top1
# )
# )
# copy_checkpoint(model_base_path, model_best_path, logger)
# with torch.no_grad():
# logger.log("{:}".format(search_globle_model.show_alphas()))
# if api is not None:
# logger.log("{:}".format(api.query_by_arch(genotypes[epoch], "200")))
# measure elapsed time
epoch_time.update(time.time() - start_time)
start_time = time.time()
# save checkpoint
for user in search_model:
model_base_path = logger.model_dir / "User{:}-acc-{}-basic-seed-{:}.pth".format(user, valid_accuracies[user][epoch],args.rand_seed)
save_path = save_checkpoint(
{
"epoch": epoch + 1,
"args": deepcopy(xargs),
"search_model": search_model[user].state_dict(),
"w_optimizer": w_optimizer[user].state_dict(),
"a_optimizer": a_optimizer[user].state_dict(),
"w_scheduler": w_scheduler[user].state_dict(),
"genotypes": search_model[user].genotype(),
"valid_accuracies": valid_accuracies[user],
},
model_base_path,
logger,
)
# logger.log("\n" + "-" * 100)
# # check the performance from the architecture dataset
# logger.log(
# "GDAS : run {:} epochs, cost {:.1f} s, last-geno is {:}.".format(
# total_epoch, search_time.sum, genotypes[total_epoch - 1]
# )
# )
# if api is not None:
# logger.log("{:}".format(api.query_by_arch(genotypes[total_epoch - 1], "200")))
logger.close()
def main(xargs, nas_bench):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
torch.set_num_threads(xargs.workers)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
if xargs.dataset == "cifar10":
dataname = "cifar10-valid"
else:
dataname = xargs.dataset
if xargs.data_path is not None:
train_data, valid_data, xshape, class_num = get_datasets(
xargs.dataset, xargs.data_path, -1)
split_Fpath = "configs/nas-benchmark/cifar-split.txt"
cifar_split = load_config(split_Fpath, None, None)
train_split, valid_split = cifar_split.train, cifar_split.valid
logger.log("Load split file from {:}".format(split_Fpath))
config_path = "configs/nas-benchmark/algos/R-EA.config"
config = load_config(config_path, {
"class_num": class_num,
"xshape": xshape
}, logger)
# To split data
train_data_v2 = deepcopy(train_data)
train_data_v2.transform = valid_data.transform
valid_data = train_data_v2
search_data = SearchDataset(xargs.dataset, train_data, train_split,
valid_split)
# data loader
train_loader = torch.utils.data.DataLoader(
train_data,
batch_size=config.batch_size,
sampler=torch.utils.data.sampler.SubsetRandomSampler(train_split),
num_workers=xargs.workers,
pin_memory=True,
)
valid_loader = torch.utils.data.DataLoader(
valid_data,
batch_size=config.batch_size,
sampler=torch.utils.data.sampler.SubsetRandomSampler(valid_split),
num_workers=xargs.workers,
pin_memory=True,
)
logger.log(
"||||||| {:10s} ||||||| Train-Loader-Num={:}, Valid-Loader-Num={:}, batch size={:}"
.format(xargs.dataset, len(train_loader), len(valid_loader),
config.batch_size))
logger.log("||||||| {:10s} ||||||| Config={:}".format(
xargs.dataset, config))
extra_info = {
"config": config,
"train_loader": train_loader,
"valid_loader": valid_loader,
}
else:
config_path = "configs/nas-benchmark/algos/R-EA.config"
config = load_config(config_path, None, logger)
extra_info = {
"config": config,
"train_loader": None,
"valid_loader": None
}
logger.log("||||||| {:10s} ||||||| Config={:}".format(
xargs.dataset, config))
search_space = get_search_spaces("cell", xargs.search_space_name)
policy = Policy(xargs.max_nodes, search_space)
optimizer = torch.optim.Adam(policy.parameters(), lr=xargs.learning_rate)
# optimizer = torch.optim.SGD(policy.parameters(), lr=xargs.learning_rate)
eps = np.finfo(np.float32).eps.item()
baseline = ExponentialMovingAverage(xargs.EMA_momentum)
logger.log("policy : {:}".format(policy))
logger.log("optimizer : {:}".format(optimizer))
logger.log("eps : {:}".format(eps))
# nas dataset load
logger.log("{:} use nas_bench : {:}".format(time_string(), nas_bench))
# REINFORCE
# attempts = 0
x_start_time = time.time()
logger.log("Will start searching with time budget of {:} s.".format(
xargs.time_budget))
total_steps, total_costs, trace = 0, 0, []
# for istep in range(xargs.RL_steps):
while total_costs < xargs.time_budget:
start_time = time.time()
log_prob, action = select_action(policy)
arch = policy.generate_arch(action)
reward, cost_time = train_and_eval(arch, nas_bench, extra_info,
dataname)
trace.append((reward, arch))
# accumulate time
if total_costs + cost_time < xargs.time_budget:
total_costs += cost_time
else:
break
baseline.update(reward)
# calculate loss
policy_loss = (-log_prob * (reward - baseline.value())).sum()
optimizer.zero_grad()
policy_loss.backward()
optimizer.step()
# accumulate time
total_costs += time.time() - start_time
total_steps += 1
logger.log(
"step [{:3d}] : average-reward={:.3f} : policy_loss={:.4f} : {:}".
format(total_steps, baseline.value(), policy_loss.item(),
policy.genotype()))
# logger.log('----> {:}'.format(policy.arch_parameters))
# logger.log('')
# best_arch = policy.genotype() # first version
best_arch = max(trace, key=lambda x: x[0])[1]
logger.log(
"REINFORCE finish with {:} steps and {:.1f} s (real cost={:.3f}).".
format(total_steps, total_costs,
time.time() - x_start_time))
info = nas_bench.query_by_arch(best_arch, "200")
if info is None:
logger.log("Did not find this architecture : {:}.".format(best_arch))
else:
logger.log("{:}".format(info))
logger.log("-" * 100)
logger.close()
return logger.log_dir, nas_bench.query_index_by_arch(best_arch)
def main(xargs, nas_bench):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
torch.set_num_threads(xargs.workers)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
if xargs.dataset == "cifar10":
dataname = "cifar10-valid"
else:
dataname = xargs.dataset
if xargs.data_path is not None:
train_data, valid_data, xshape, class_num = get_datasets(
xargs.dataset, xargs.data_path, -1)
split_Fpath = "configs/nas-benchmark/cifar-split.txt"
cifar_split = load_config(split_Fpath, None, None)
train_split, valid_split = cifar_split.train, cifar_split.valid
logger.log("Load split file from {:}".format(split_Fpath))
config_path = "configs/nas-benchmark/algos/R-EA.config"
config = load_config(config_path, {
"class_num": class_num,
"xshape": xshape
}, logger)
# To split data
train_data_v2 = deepcopy(train_data)
train_data_v2.transform = valid_data.transform
valid_data = train_data_v2
search_data = SearchDataset(xargs.dataset, train_data, train_split,
valid_split)
# data loader
train_loader = torch.utils.data.DataLoader(
train_data,
batch_size=config.batch_size,
sampler=torch.utils.data.sampler.SubsetRandomSampler(train_split),
num_workers=xargs.workers,
pin_memory=True,
)
valid_loader = torch.utils.data.DataLoader(
valid_data,
batch_size=config.batch_size,
sampler=torch.utils.data.sampler.SubsetRandomSampler(valid_split),
num_workers=xargs.workers,
pin_memory=True,
)
logger.log(
"||||||| {:10s} ||||||| Train-Loader-Num={:}, Valid-Loader-Num={:}, batch size={:}"
.format(xargs.dataset, len(train_loader), len(valid_loader),
config.batch_size))
logger.log("||||||| {:10s} ||||||| Config={:}".format(
xargs.dataset, config))
extra_info = {
"config": config,
"train_loader": train_loader,
"valid_loader": valid_loader,
}
else:
config_path = "configs/nas-benchmark/algos/R-EA.config"
config = load_config(config_path, None, logger)
logger.log("||||||| {:10s} ||||||| Config={:}".format(
xargs.dataset, config))
extra_info = {
"config": config,
"train_loader": None,
"valid_loader": None
}
search_space = get_search_spaces("cell", xargs.search_space_name)
random_arch = random_architecture_func(xargs.max_nodes, search_space)
mutate_arch = mutate_arch_func(search_space)
# x =random_arch() ; y = mutate_arch(x)
x_start_time = time.time()
logger.log("{:} use nas_bench : {:}".format(time_string(), nas_bench))
logger.log("-" * 30 +
" start searching with the time budget of {:} s".format(
xargs.time_budget))
history, total_cost = regularized_evolution(
xargs.ea_cycles,
xargs.ea_population,
xargs.ea_sample_size,
xargs.time_budget,
random_arch,
mutate_arch,
nas_bench if args.ea_fast_by_api else None,
extra_info,
dataname,
)
logger.log(
"{:} regularized_evolution finish with history of {:} arch with {:.1f} s (real-cost={:.2f} s)."
.format(time_string(), len(history), total_cost,
time.time() - x_start_time))
best_arch = max(history, key=lambda i: i.accuracy)
best_arch = best_arch.arch
logger.log("{:} best arch is {:}".format(time_string(), best_arch))
info = nas_bench.query_by_arch(best_arch, "200")
if info is None:
logger.log("Did not find this architecture : {:}.".format(best_arch))
else:
logger.log("{:}".format(info))
logger.log("-" * 100)
logger.close()
return logger.log_dir, nas_bench.query_index_by_arch(best_arch)
def main(xargs, nas_bench):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
torch.set_num_threads(xargs.workers)
prepare_seed(xargs.rand_seed)
logger = prepare_logger(args)
if xargs.dataset == "cifar10":
dataname = "cifar10-valid"
else:
dataname = xargs.dataset
if xargs.data_path is not None:
train_data, valid_data, xshape, class_num = get_datasets(
xargs.dataset, xargs.data_path, -1
)
split_Fpath = "configs/nas-benchmark/cifar-split.txt"
cifar_split = load_config(split_Fpath, None, None)
train_split, valid_split = cifar_split.train, cifar_split.valid
logger.log("Load split file from {:}".format(split_Fpath))
config_path = "configs/nas-benchmark/algos/R-EA.config"
config = load_config(
config_path, {"class_num": class_num, "xshape": xshape}, logger
)
# To split data
train_data_v2 = deepcopy(train_data)
train_data_v2.transform = valid_data.transform
valid_data = train_data_v2
search_data = SearchDataset(xargs.dataset, train_data, train_split, valid_split)
# data loader
train_loader = torch.utils.data.DataLoader(
train_data,
batch_size=config.batch_size,
sampler=torch.utils.data.sampler.SubsetRandomSampler(train_split),
num_workers=xargs.workers,
pin_memory=True,
)
valid_loader = torch.utils.data.DataLoader(
valid_data,
batch_size=config.batch_size,
sampler=torch.utils.data.sampler.SubsetRandomSampler(valid_split),
num_workers=xargs.workers,
pin_memory=True,
)
logger.log(
"||||||| {:10s} ||||||| Train-Loader-Num={:}, Valid-Loader-Num={:}, batch size={:}".format(
xargs.dataset, len(train_loader), len(valid_loader), config.batch_size
)
)
logger.log("||||||| {:10s} ||||||| Config={:}".format(xargs.dataset, config))
extra_info = {
"config": config,
"train_loader": train_loader,
"valid_loader": valid_loader,
}
else:
config_path = "configs/nas-benchmark/algos/R-EA.config"
config = load_config(config_path, None, logger)
logger.log("||||||| {:10s} ||||||| Config={:}".format(xargs.dataset, config))
extra_info = {"config": config, "train_loader": None, "valid_loader": None}
# nas dataset load
assert xargs.arch_nas_dataset is not None and os.path.isfile(xargs.arch_nas_dataset)
search_space = get_search_spaces("cell", xargs.search_space_name)
cs = get_configuration_space(xargs.max_nodes, search_space)
config2structure = config2structure_func(xargs.max_nodes)
hb_run_id = "0"
NS = hpns.NameServer(run_id=hb_run_id, host="localhost", port=0)
ns_host, ns_port = NS.start()
num_workers = 1
# nas_bench = AANASBenchAPI(xargs.arch_nas_dataset)
# logger.log('{:} Create NAS-BENCH-API DONE'.format(time_string()))
workers = []
for i in range(num_workers):
w = MyWorker(
nameserver=ns_host,
nameserver_port=ns_port,
convert_func=config2structure,
dataname=dataname,
nas_bench=nas_bench,
time_budget=xargs.time_budget,
run_id=hb_run_id,
id=i,
)
w.run(background=True)
workers.append(w)
start_time = time.time()
bohb = BOHB(
configspace=cs,
run_id=hb_run_id,
eta=3,
min_budget=12,
max_budget=200,
nameserver=ns_host,
nameserver_port=ns_port,
num_samples=xargs.num_samples,
random_fraction=xargs.random_fraction,
bandwidth_factor=xargs.bandwidth_factor,
ping_interval=10,
min_bandwidth=xargs.min_bandwidth,
)
results = bohb.run(xargs.n_iters, min_n_workers=num_workers)
bohb.shutdown(shutdown_workers=True)
NS.shutdown()
real_cost_time = time.time() - start_time
id2config = results.get_id2config_mapping()
incumbent = results.get_incumbent_id()
logger.log(
"Best found configuration: {:} within {:.3f} s".format(
id2config[incumbent]["config"], real_cost_time
)
)
best_arch = config2structure(id2config[incumbent]["config"])
info = nas_bench.query_by_arch(best_arch, "200")
if info is None:
logger.log("Did not find this architecture : {:}.".format(best_arch))
else:
logger.log("{:}".format(info))
logger.log("-" * 100)
logger.log(
"workers : {:.1f}s with {:} archs".format(
workers[0].time_budget, len(workers[0].seen_archs)
)
)
logger.close()
return logger.log_dir, nas_bench.query_index_by_arch(best_arch), real_cost_time
def main(args):
assert torch.cuda.is_available(), "CUDA is not available."
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = True
# torch.backends.cudnn.deterministic = True
# torch.set_num_threads(args.workers)
prepare_seed(args.rand_seed)
logger = prepare_logger(args)
train_data, valid_data, xshape, class_num = get_datasets(
args.dataset, args.data_path, args.cutout_length)
valid_use = False
user_data = np.load(
'../../exps/NAS-Bench-201-algos/Dirichlet_100000000_Use_valid_{}_{}_non_iid_setting.npy'
.format(valid_use, args.dataset),
allow_pickle=True).item()
train_loader_list = {}
valid_loader_list = {}
# alignment_loader = torch.utils.data.DataLoader(
# DatasetSplit(train_data, np.random.choice(list(range(len(train_data))), 5000)),
# batch_size=args.batch_size,
# shuffle=True,
# num_workers=args.workers,
# pin_memory=True,
# )
alignment_loader = torch.utils.data.DataLoader(
DatasetSplit(train_data, user_data['public']),
batch_size=args.batch_size,
shuffle=True,
num_workers=args.workers,
pin_memory=True,
)
user_num = len(user_data) - 1
for user in range(user_num):
train_loader_list[user] = torch.utils.data.DataLoader(
DatasetSplit(train_data,
user_data[user]['train'] + user_data[user]['test']),
batch_size=args.batch_size,
shuffle=True,
drop_last=True,
num_workers=args.workers,
pin_memory=True,
)
valid_loader_list[user] = torch.utils.data.DataLoader(
DatasetSplit(valid_data, user_data[user]['valid']),
batch_size=args.batch_size,
shuffle=True,
drop_last=True,
num_workers=args.workers,
pin_memory=True,
)
# train_loader = torch.utils.data.DataLoader(
# train_data,
# batch_size=args.batch_size,
# shuffle=True,
# num_workers=args.workers,
# pin_memory=True,
# )
# valid_loader = torch.utils.data.DataLoader(
# valid_data,
# batch_size=args.batch_size,
# shuffle=False,
# num_workers=args.workers,
# pin_memory=True,
# )
# get configures
model_config = load_config(args.model_config, {"class_num": class_num},
logger)
optim_config = load_config(args.optim_config, {"class_num": class_num},
logger)
if args.model_source == "normal":
base_model = obtain_model(model_config)
elif args.model_source == "nas":
base_model = obtain_nas_infer_model(model_config,
args.extra_model_path)
elif args.model_source == "autodl-searched":
import ast
import re
file_proposal = args.extra_model_path
genotype_list = {}
if args.extra_model_path in Networks:
for user in range(user_num):
genotype_list[user] = Networks[args.extra_model_path]
else:
user_list = {}
user = 0
for line in open(file_proposal):
if "<<<--->>>" in line:
tep_dict = ast.literal_eval(
re.search('({.+})', line).group(0))
count = 0
for j in tep_dict['normal']:
for k in j:
if 'skip_connect' in k[0]:
count += 1
if count == 2:
# if user%5 not in genotype_list:
# logger.log("user{}'s architecture is chosen from epoch {}".format(user%5, user//5))
genotype_list[user % 5] = tep_dict
user_list[user % 5] = user // 5
user += 1
for user in user_list:
logger.log(
"user{}'s architecture is chosen from epoch {}".format(
user, user_list[user]))
logger.log(genotype_list)
base_model_list = {}
for user in range(user_num):
base_model_list[user] = obtain_model(model_config,
genotype_list[3])
flop, param = get_model_infos(base_model_list[user], xshape)
logger.log("The model of User {}: parm: {}, Flops: {}.".format(
user, param, flop))
wandb.watch(base_model_list[user])
# base_model = obtain_model(model_config, args.extra_model_path)
elif args.model_source == "Densenet":
base_model_list = {}
for user in range(user_num):
base_model_list[user] = torch.hub.load('pytorch/vision:v0.10.0',
'densenet121',
pretrained=False)
flop, param = get_model_infos(base_model_list[user], xshape)
logger.log("The model of User {}: parm: {}, Flops: {}.".format(
user, param, flop))
else:
base_model_list = {}
for user in range(user_num):
base_model_list[user], _, __ = create_cnn_model(
args.model_source,
args.dataset,
optim_config.epochs + optim_config.warmup,
None,
use_cuda=1)
flop, param = get_model_infos(base_model_list[user], xshape)
logger.log("The model of User {}: parm: {}, Flops: {}.".format(
user, param, flop))
# raise ValueError("invalid model-source : {:}".format(args.model_source))
optimizer_list = {}
scheduler_list = {}
criterion_list = {}
for user in range(user_num):
flop, param = get_model_infos(base_model_list[user], xshape)
# logger.log("model ====>>>>:\n{:}".format(base_model_list[user]))
# logger.log("model information : {:}".format(base_model_list[user].get_message()))
logger.log("-" * 50)
logger.log("Params={:.2f} MB, FLOPs={:.2f} M ... = {:.2f} G".format(
param, flop, flop / 1e3))
logger.log("-" * 50)
optimizer_list[user], scheduler_list[user], criterion_list[
user] = get_optim_scheduler(base_model_list[user].parameters(),
optim_config)
# logger.log("User{}, train_data : {:}".format(user, train_data[user]))
# logger.log("User{}, valid_data : {:}".format(user, valid_data[user]))
# optimizer, scheduler, criterion = get_optim_scheduler(
# base_model.parameters(), optim_config
# )
logger.log("User{}, optimizer : {:}".format(user,
optimizer_list[user]))
logger.log("User{}, scheduler : {:}".format(user,
scheduler_list[user]))
logger.log("User{}, criterion : {:}".format(user,
criterion_list[user]))
# base_model_list[user], criterion_list[user] = torch.nn.DataParallel(base_model[user]).cuda(), criterion_list[user].cuda()
criterion_list[user] = criterion_list[user].cuda()
base_model_list[user] = base_model_list[user].cuda()
last_info, model_base_path, model_best_path = (
logger.path("info"),
logger.path("model"),
logger.path("best"),
)
if last_info.exists(): # automatically resume from previous checkpoint
logger.log("=> loading checkpoint of the last-info '{:}' start".format(
last_info))
last_infox = torch.load(last_info)
start_epoch = last_infox["epoch"] + 1
last_checkpoint_path = last_infox["last_checkpoint"]
if not last_checkpoint_path.exists():
logger.log("Does not find {:}, try another path".format(
last_checkpoint_path))
last_checkpoint_path = (last_info.parent /
last_checkpoint_path.parent.name /
last_checkpoint_path.name)
checkpoint = torch.load(last_checkpoint_path)
for user in base_model_list:
base_model_list[user].load_state_dict(
checkpoint["model_{}".format(user)])
optimizer_list[user].load_state_dict(
checkpoint["optimizer_{}".format(user)])
scheduler_list[user].load_state_dict(
checkpoint["scheduler_{}".format(user)])
valid_accuracies = checkpoint["valid_accuracies"]
logger.log(
"=> loading checkpoint of the last-info '{:}' start with {:}-th epoch."
.format(last_info, start_epoch))
del (checkpoint)
elif args.resume is not None:
assert Path(
args.resume).exists(), "Can not find the resume file : {:}".format(
args.resume)
checkpoint = torch.load(args.resume)
start_epoch = checkpoint["epoch"] + 1
for user in base_model_list:
base_model_list[user].load_state_dict(
checkpoint["model_{}".format(user)])
optimizer_list[user].load_state_dict(
checkpoint["optimizer_{}".format(user)])
scheduler_list[user].load_state_dict(
checkpoint["scheduler_{}".format(user)])
valid_accuracies = checkpoint["valid_accuracies"]
logger.log(
"=> loading checkpoint from '{:}' start with {:}-th epoch.".format(
args.resume, start_epoch))
# elif args.init_model is not None:
# assert Path(
# args.init_model
# ).exists(), "Can not find the initialization file : {:}".format(args.init_model)
# checkpoint = torch.load(args.init_model)
# base_model.load_state_dict(checkpoint["base-model"])
# start_epoch, valid_accuracies, max_bytes = 0, {"best": -1}, {}
# logger.log("=> initialize the model from {:}".format(args.init_model))
else:
logger.log("=> do not find the last-info file : {:}".format(last_info))
start_epoch, valid_accuracies, max_bytes = 0, {"best": -1}, {}
train_func, valid_func = get_procedures(args.procedure)
total_epoch = optim_config.epochs + optim_config.warmup
local_epoch = args.local_epoch
# Main Training and Evaluation Loop
start_time = time.time()
epoch_time = AverageMeter()
for epoch in range(start_epoch, total_epoch):
epoch_str = "epoch={:03d}/{:03d}".format(epoch, total_epoch)
test_accuracy1_list = []
test_accuracy5_list = []
for user in scheduler_list:
if (epoch % 1 == 0) or (epoch + 1 == total_epoch):
logger.log("-" * 150)
valid_loss, valid_acc1, valid_acc5 = valid_func(
valid_loader_list[user],
base_model_list[user],
criterion_list[user],
optim_config,
epoch_str,
args.print_freq_eval,
logger,
)
logger.log(
"Important: User {}: ***{:s}*** VALID [{:}] loss = {:.6f}, accuracy@1 = {:.2f}, accuracy@5 = {:.2f} | Best-Valid-Acc@1={:.2f}, Error@1={:.2f}"
.format(
user,
time_string(),
epoch_str,
valid_loss,
valid_acc1,
valid_acc5,
valid_accuracies["best"],
100 - valid_accuracies["best"],
))
test_accuracy1_list.append(valid_acc1)
test_accuracy5_list.append(valid_acc5)
if args.logits_aggregation:
Logits_aggregation_func(alignment_loader, base_model_list,
optimizer_list, logger, 3)
else:
tep_list = [
model.state_dict() for model in base_model_list.values()
]
global_state = average_weights(tep_list)
del (tep_list)
for one in base_model_list:
base_model_list[one].load_state_dict(global_state)
for user in scheduler_list:
scheduler_list[user].update(epoch, 0.0)
need_time = "Time Left: {:}".format(
convert_secs2time(epoch_time.avg * (total_epoch - epoch), True))
LRs = scheduler_list[0].get_lr()
find_best = False
# set-up drop-out ratio
# if hasattr(base_model, "update_drop_path"):
# base_model.update_drop_path(
# model_config.drop_path_prob * epoch / total_epoch
# )
logger.log(
"\n***{:s}*** start {:s} {:s}, LR=[{:.12f} ~ {:.12f}], scheduler={:}"
.format(time_string(), epoch_str, need_time, min(LRs), max(LRs),
scheduler_list[0]))
# train for one epoch
for user in train_loader_list:
train_loss, train_acc1, train_acc5 = train_func(
train_loader_list[user], base_model_list[user],
criterion_list[user], scheduler_list[user],
optimizer_list[user], optim_config, epoch_str, args.print_freq,
logger, local_epoch)
# log the results
logger.log(
"User {} ***{:s}*** TRAIN [{:}] loss = {:.6f}, accuracy-1 = {:.2f}, accuracy-5 = {:.2f}"
.format(user, time_string(), epoch_str, train_loss, train_acc1,
train_acc5))
info_dict = {
"{}user_train_loss".format(user): train_loss,
"{}user_train_top1".format(user): train_acc1,
"{}user_train_top5".format(user): train_acc5,
"{}user_valid_loss".format(user): valid_loss,
"{}user_valid_top1".format(user): valid_acc1,
"{}user_valid_top5".format(user): valid_acc5,
"epoch": epoch
}
wandb.log(info_dict)
if np.average(test_accuracy1_list) > valid_accuracies["best"]:
valid_accuracies["best"] = np.average(test_accuracy1_list)
find_best = True
logger.log(
"Currently, the best validation accuracy found at {:03d}-epoch :: acc@1={:.2f}, acc@5={:.2f}, error@1={:.2f}, error@5={:.2f}, save into {:}."
.format(
epoch,
valid_acc1,
valid_acc5,
100 - valid_acc1,
100 - valid_acc5,
model_best_path,
))
valid_accuracies[epoch] = np.average(test_accuracy1_list)
info_dict = {
"average_valid_top1_acc": np.average(test_accuracy1_list),
"average_valid_top5_acc": np.average(test_accuracy5_list),
"epoch": epoch
}
wandb.log(info_dict)
# num_bytes = (
# torch.cuda.max_memory_cached(next(network.parameters()).device) * 1.0
# )
# logger.log(
# "[GPU-Memory-Usage on {:} is {:} bytes, {:.2f} KB, {:.2f} MB, {:.2f} GB.]".format(
# next(network.parameters()).device,
# int(num_bytes),
# num_bytes / 1e3,
# num_bytes / 1e6,
# num_bytes / 1e9,
# )
# )
# max_bytes[epoch] = num_bytes
if epoch % 10 == 0:
torch.cuda.empty_cache()
# save checkpoint
checkpoint_dict = {
"epoch": epoch,
"args": deepcopy(args),
"FLOP": flop,
"PARAM": param,
"model_source": args.model_source,
"valid_accuracies": deepcopy(valid_accuracies),
"model-config": model_config._asdict(),
"optim-config": optim_config._asdict()
}
for user in base_model_list:
checkpoint_dict["model_{}".format(
user)] = base_model_list[user].state_dict()
checkpoint_dict["scheduler_{}".format(
user)] = scheduler_list[user].state_dict()
checkpoint_dict["optimizer_{}".format(
user)] = optimizer_list[user].state_dict()
save_path = save_checkpoint(checkpoint_dict, model_base_path, logger)
del (checkpoint_dict)
if find_best:
copy_checkpoint(model_base_path, model_best_path, logger)
last_info = save_checkpoint(
{
"epoch": epoch,
"args": deepcopy(args),
"last_checkpoint": save_path,
},
logger.path("info"),
logger,
)
# measure elapsed time
epoch_time.update(time.time() - start_time)
start_time = time.time()
logger.log("\n" + "-" * 200)
# logger.log(
# "Finish training/validation in {:} with Max-GPU-Memory of {:.2f} MB, and save final checkpoint into {:}".format(
# convert_secs2time(epoch_time.sum, True),
# max(v for k, v in max_bytes.items()) / 1e6,
# logger.path("info"),
# )
# )
logger.log("-" * 200 + "\n")
logger.close()
