def main():
# enable mixed-precision computation if desired
if args.amp:
mixed_precision.enable_mixed_precision()
torch.manual_seed(args.seed)
torch.cuda.manual_seed(args.seed)
# get the dataset
dataset = get_dataset(args.dataset)
_, test_loader, _ = build_dataset(
dataset=dataset, batch_size=args.batch_size, input_dir=args.input_dir
)
torch_device = torch.device("cuda")
checkpointer = Checkpointer()
model = checkpointer.restore_model_from_checkpoint(args.checkpoint_path)
model = model.to(torch_device)
model, _ = mixed_precision.initialize(model, None)
test_stats = AverageMeterSet()
test(model, test_loader, torch_device, test_stats)
stat_str = test_stats.pretty_string(ignore=model.tasks)
print(stat_str)
def main():
# create target output dir if it doesn't exist yet
if not os.path.isdir(args.output_dir):
os.mkdir(args.output_dir)
# enable mixed-precision computation if desired
amp = ""
if args.amp:
amp = "torch"
if args.apex:
print("Error: Cannot use both --amp and --apex.")
exit()
if args.apex:
amp = "apex"
mixed_precision.enable_mixed_precision()
# set the RNG seeds (probably more hidden elsewhere...)
torch.manual_seed(args.seed)
torch.cuda.manual_seed(args.seed)
# get the dataset
dataset = get_dataset(args.dataset)
encoder_size = get_encoder_size(dataset)
# get a helper object for tensorboard logging
log_dir = os.path.join(args.output_dir, args.run_name)
stat_tracker = StatTracker(log_dir=log_dir)
# get dataloaders for training and testing
train_loader, test_loader, num_classes = \
build_dataset(dataset=dataset,
batch_size=args.batch_size,
input_dir=args.input_dir,
labeled_only=args.classifiers)
torch_device = torch.device('cuda')
checkpointer = Checkpointer(args.output_dir)
if args.cpt_load_path:
model = checkpointer.restore_model_from_checkpoint(
args.cpt_load_path, training_classifier=args.classifiers)
else:
# create new model with random parameters
model = Model(ndf=args.ndf,
n_classes=num_classes,
n_rkhs=args.n_rkhs,
tclip=args.tclip,
n_depth=args.n_depth,
encoder_size=encoder_size,
use_bn=(args.use_bn == 1))
model.init_weights(init_scale=1.0)
checkpointer.track_new_model(model)
model = model.to(torch_device)
# select which type of training to do
task = train_classifiers if args.classifiers else train_self_supervised
task(model, args.learning_rate, dataset, train_loader, test_loader,
stat_tracker, checkpointer, args.output_dir, torch_device, amp)
def main():
# create target output dir if it doesn't exist yet
if not os.path.isdir(args['output_dir']):
os.mkdir(args['output_dir'])
# enable mixed-precision computation if desired
if args['amp']:
mixed_precision.enable_mixed_precision()
# set the RNG seeds (probably more hidden elsewhere...)
torch.manual_seed(args['seed'])
torch.cuda.manual_seed(args['seed'])
# get the dataset
dataset = get_dataset(args['dataset'])
encoder_size = get_encoder_size(dataset)
# get a helper object for tensorboard logging
log_dir = os.path.join(args['output_dir'], args['run_name'])
stat_tracker = StatTracker(log_dir=log_dir)
# get dataloaders for training and testing
train_loader, test_loader, num_classes = \
build_dataset(dataset=dataset,
batch_size=args['batch_size'],
input_dir=args['input_dir'],
labeled_only=args['classifiers'])
torch_device = torch.device('cuda')
checkpointer = Checkpointer(args['output_dir'])
if args['cpt_load_path']:
model = checkpointer.restore_model_from_checkpoint(
args['cpt_load_path'], training_classifier=args['classifiers'])
else:
# create new model with random parameters
model = Model(ndf=args['ndf'],
n_classes=num_classes,
n_rkhs=args['n_rkhs'],
tclip=args['tclip'],
n_depth=args['n_depth'],
encoder_size=encoder_size,
use_bn=(args['use_bn'] == 1))
model.init_weights(init_scale=1.0)
checkpointer.track_new_model(model)
model = model.to(torch_device)
# select which type of training to do
task = train_classifiers if args['classifiers'] else train_self_supervised
if args['classifiers']:
task = train_classifiers
elif args['decoder']:
task = train_decoder
else:
task = train_self_supervised
task(model, args['learning_rate'], dataset, train_loader, test_loader,
stat_tracker, checkpointer, args['output_dir'], torch_device)
def do_test(cfg, model, dataloader, logger, task, load_ckpt):
if load_ckpt is not None:
checkpointer = Checkpointer(model,
save_dir=cfg.OUTPUT_DIR,
logger=logger,
monitor_unit='episode')
checkpointer.load_checkpoint(load_ckpt)
val_metrics = model.metric_evaluator
model.eval()
num_images = 0
meters = MetricLogger(delimiter=" ")
logger.info('Start testing...')
start_testing_time = time.time()
end = time.time()
for iteration, data in enumerate(dataloader):
data_time = time.time() - end
inputs, labels = torch.cat(
data['images']).to(device), data['labels'].to(device)
logits = model(inputs)
val_metrics.accumulated_update(logits, labels)
num_images += logits.shape[0]
batch_time = time.time() - end
end = time.time()
meters.update(time=batch_time, data=data_time)
eta_seconds = meters.time.global_avg * (len(dataloader) - iteration)
eta_string = str(datetime.timedelta(seconds=int(eta_seconds)))
if iteration % 50 == 0 and iteration > 0:
logger.info('eta: {}, iter: {}/{}'.format(eta_string, iteration,
len(dataloader)))
val_metrics.gather_results()
logger.info('num of images: {}'.format(num_images))
logger.info('{} top1 acc: {:.4f}'.format(
task, val_metrics.accumulated_topk_corrects['top1_acc']))
total = time.time() - start_testing_time
total_time_str = str(datetime.timedelta(seconds=total))
logger.info("Total testing time: {}".format(total_time_str))
return val_metrics
def obtain_model(model_type):
if model_type != 'robust':
checkpoint_path = 'runs/amdim_cpt.pth'
checkpointer = Checkpointer()
print('Loading model')
model = checkpointer.restore_model_from_checkpoint(checkpoint_path)
torch_device = torch.device('cuda')
model = model.to(torch_device)
else:
dataset = robustness.datasets.CIFAR()
model_kwargs = {
'arch':
'resnet50',
'dataset':
dataset,
'resume_path':
f'../robust_classif/robustness_applications/models/CIFAR.pt'
}
model, _ = model_utils.make_and_restore_model(**model_kwargs)
model.eval()
model = CommonModel(model, model_type)
return model
def do_test(cfg, model, dataloader, logger, task, load_ckpt):
checkpointer = Checkpointer(model, save_dir=cfg.OUTPUT_DIR, logger=logger)
checkpointer.load_checkpoint(load_ckpt)
val_metrics = TransferNetMetrics(cfg)
model.eval()
num_images = 0
logger.info('Start testing...')
for iteration, data in enumerate(dataloader):
inputs, targets = data['image'].to(device), data['label_articleType'].to(device)
cls_scores = model(inputs, targets)
val_metrics.accumulated_update(cls_scores, targets)
num_images += len(targets)
val_metrics.gather_results()
logger.info('num of images: {}'.format(num_images))
logger.info('{} top1/5 acc: {:.4f}/{:.4f}, mean class acc: {:.4f}'.format(task,
val_metrics.accumulated_topk_corrects[
'top1_acc'],
val_metrics.accumulated_topk_corrects[
'top5_acc'],
val_metrics.mean_class_accuracy))
return val_metrics
def evaluateVideos(seqs, tag):
dh = DeviceHelper()
print('Using ' + str(dh.device))
cp = Checkpointer(params.checkpoint_path, dh.device)
model, _ = Driver.CreateModelAndOpt(params, dh, cp)
for seq_info in seqs:
seq, _, _ = seq_info
print('Processing ' + seq)
s = SingleVideo(params.image_dir, params.pose_dir, seq_info)
ds = DeviceDataset(s)
output = os.path.join(params.pred_dir, tag + '_' + seq + '.npy')
Driver.evalOnVideo(model, ds, output)
seq_list = [x for x, _, _ in seqs]
Plotting.plot(params.pose_dir, params.pred_dir, tag + '_',
params.result_dir, seq_list)
def __len__(self):
return len(self.data)
def __getitem__(self, idx):
item = self.data[idx]
img = self._load_image(item['image'])
# convert 3D to 2D tensor to store in kaldi-format
uttid = item["uttid"]
return {"uttid": uttid, "image": img}
if __name__ == '__main__':
parser = get_parser()
args = parser.parse_args()
# Restore model from the checkpoint
ckpt = Checkpointer()
ckpt.restore_model_from_checkpoint(
cpt_path="amdim_ndf256_rkhs2048_rd10.pth")
ckpt.model.to('cuda')
img_tmp_ark = os.path.splitext(args.img_as_feats_scp)[0] + '.tmp.ark'
ds = ImageDataset(args.places_json)
with kio.open_or_fd(img_tmp_ark, 'wb') as f:
for i in tqdm(range(len(ds))):
item = ds[i]
feats = item["image"]
batch = torch.zeros(2, 3, 128, 128)
batch[0] = feats
batch = batch.to('cuda')
res_dict = ckpt.model(x1=batch, x2=batch, class_only=True)
global_feats = res_dict["rkhs_glb"][:1]
k = item["uttid"]
from neat import config, population, chromosome, genome, visualize
from neat.nn import nn_pure as nn
from checkpoint import Checkpointer
#from player_2048 import *
import sys
pop = Checkpointer.restore_checkpoint(sys.argv[1])
winner = pop.stats[0][-1]
print('Number of evaluations: %d' % winner.id)
# Visualize the winner network (requires PyDot)
#visualize.draw_net(winner) # best chromosome
# Plots the evolution of the best/average fitness (requires Biggles)
#visualize.plot_stats(pop.stats)
# Visualizes speciation
#visualize.plot_species(pop.species_log)
print pop.species_log
# Let's check if it's really solved the problem
print('\nBest network output:')
brain = nn.create_ffphenotype(winner)
score = play_with_AI(brain)
print 'score do melhor: ' + str(int(score))
from driver import *
from parameters import *
from device import DeviceHelper
from checkpoint import Checkpointer
from dataset import VideoDataset
dh = DeviceHelper()
cp = Checkpointer(params.checkpoint_path, dh.device)
# load model and optimizer
model, opt = Driver.CreateModelAndOpt(params, dh, cp)
# run training
history = Driver.fit(params.epochs, model, opt, params, cp)
# save history and model to checkpoint
with open(params.log_file, 'a') as of:
of.write('*' * 50)
of.write('Loss sequence')
of.write(str(history))
epoch, loss = zip(*history)
cp.CreateCheckpoint(model, opt, params.epochs, min(loss),
params.checkpoint_tag, params.epochs)
if torch.cuda.device_count() > 1:
model = nn.DataParallel(model)
data_parallel = True
# 分配模型到gpu或cpu，根据device决定
model.to(device)
#优化器
optimizer = torch.optim.Adam(model.parameters(), lr=lr)
# 学习率衰减策略，一半的时候衰减为十分之一
scheduler = lr_scheduler.MultiStepLR(optimizer, milestones=[epoch_iter//2], gamma=0.1)
# 判断是否有保存的模型，有的话加载最后一个继续训练
checkpointer = Checkpointer(
model, optimizer, scheduler, pths_path
)
extra_checkpoint_data = checkpointer.load()
arguments.update(extra_checkpoint_data)
start_epoch = arguments['iteration'] # 开始的轮数
logger.info('start_epoch is :{}'.format(start_epoch))
for epoch in range(start_epoch, epoch_iter):
iteration = epoch + 1
arguments['iteration'] = iteration
model.train()
epoch_loss = 0 # 初始化每一轮的损失为0
epoch_time = time.time() # 记录每一轮的时间
for i, (img, gt_score, gt_geo, ignored_map) in enumerate(train_loader):
num_workers = model_conf['train_data_loader_kwargs']['num_workers']
lr = model_conf['trainer_kwargs']['opt_kwargs']['lr']
#update run id in config file
model_conf['run_id'] = run_id
json.dump(model_conf, open('config.json', 'w'))
#Construct DataLoader and checkpointer
train_loader = Image_Loader(img_path,
batch_size=batch_size,
shuffle=True,
drop_last=True,
num_workers=num_workers,
input_shape=input_shape,
stage='train')
checkpointer = Checkpointer(run=run)
# Load checkpoint if given, otherwise construct a new model
encoder, mi_estimator = checkpointer.restore_model_from_checkpoint()
# Compute on multiple GPUs, if there are more than one given
if torch.cuda.device_count() > 1:
print("Let's use %d GPUs" % torch.cuda.device_count())
encoder = torch.nn.DataParallel(encoder).module
mi_estimator = torch.nn.DataParallel(mi_estimator).module
encoder.to(device)
mi_estimator.to(device)
enc_optim = torch.optim.Adam(encoder.parameters(), lr=lr)
mi_optim = torch.optim.Adam(mi_estimator.parameters(), lr=lr)
try:
def do_train(cfg, model, train_dataloader, logger, load_ckpt=None):
# define optimizer
if cfg.TRAIN.OPTIMIZER == 'sgd':
optimizer = optim.SGD(model.parameters(),
lr=cfg.TRAIN.LR_BASE,
momentum=cfg.TRAIN.MOMENTUM,
weight_decay=cfg.TRAIN.WEIGHT_DECAY)
else:
raise NotImplementedError
# define learning rate scheduler
lr_scheduler = optim.lr_scheduler.ExponentialLR(optimizer,
cfg.TRAIN.LR_DECAY)
checkpointer = Checkpointer(model,
optimizer,
lr_scheduler,
cfg.OUTPUT_DIR,
logger,
monitor_unit='episode')
training_args = {}
# training_args['iteration'] = 1
training_args['episode'] = 1
if load_ckpt:
checkpointer.load_checkpoint(load_ckpt, strict=False)
if checkpointer.has_checkpoint():
extra_checkpoint_data = checkpointer.load()
training_args.update(extra_checkpoint_data)
start_episode = training_args['episode']
episode = training_args['episode']
meters = MetricLogger(delimiter=" ")
end = time.time()
start_training_time = time.time()
model.train()
break_while = False
while not break_while:
for inner_iter, data in enumerate(train_dataloader):
training_args['episode'] = episode
data_time = time.time() - end
# targets = torch.cat(data['labels']).to(device)
inputs = torch.cat(data['images']).to(device)
logits = model(inputs)
losses = model.loss_evaluator(logits)
metrics = model.metric_evaluator(logits)
total_loss = sum(loss for loss in losses.values())
meters.update(loss=total_loss, **losses, **metrics)
optimizer.zero_grad()
total_loss.backward()
optimizer.step()
batch_time = time.time() - end
end = time.time()
meters.update(time=batch_time, data=data_time)
if inner_iter % cfg.TRAIN.PRINT_PERIOD == 0:
eta_seconds = meters.time.global_avg * (cfg.TRAIN.MAX_EPISODE -
episode)
eta_string = str(datetime.timedelta(seconds=int(eta_seconds)))
logger.info(
meters.delimiter.join([
"eta: {eta}",
"episode: {ep}/{max_ep}",
"{meters}",
"lr: {lr:.6f}",
"max mem: {memory:.0f}",
]).format(
eta=eta_string,
ep=episode,
max_ep=cfg.TRAIN.MAX_EPISODE,
iter=inner_iter,
max_iter=len(train_dataloader),
meters=str(meters),
lr=optimizer.param_groups[-1]["lr"],
memory=(torch.cuda.max_memory_allocated() / 1024.0 /
1024.0) if torch.cuda.is_available() else 0.,
))
if episode % cfg.TRAIN.LR_DECAY_EPISODE == 0:
logger.info("lr decayed to {:.4f}".format(
optimizer.param_groups[-1]["lr"]))
lr_scheduler.step()
if episode == cfg.TRAIN.MAX_EPISODE:
break_while = True
checkpointer.save("model_{:06d}".format(episode),
**training_args)
break
if episode % cfg.TRAIN.SAVE_CKPT_EPISODE == 0:
checkpointer.save("model_{:06d}".format(episode),
**training_args)
episode += 1
total_training_time = time.time() - start_training_time
total_time_str = str(datetime.timedelta(seconds=total_training_time))
logger.info("Total training time: {} ({:.4f} s / epoch)".format(
total_time_str, total_training_time /
(episode - start_episode if episode > start_episode else 1)))
def do_train(cfg, model, train_dataloader, val_dataloader, logger, load_ckpt=None):
# define optimizer
if cfg.TRAIN.OPTIMIZER == 'sgd':
optimizer = optim.SGD(model.parameters(), lr=cfg.TRAIN.LR_BASE,
momentum=cfg.TRAIN.MOMENTUM, weight_decay=cfg.TRAIN.WEIGHT_DECAY)
else:
raise NotImplementedError
# define learning rate scheduler
lr_scheduler = optim.lr_scheduler.ExponentialLR(optimizer, cfg.TRAIN.LR_DECAY)
checkpointer = Checkpointer(model, optimizer, lr_scheduler, cfg.OUTPUT_DIR, logger)
training_args = {}
# training_args['iteration'] = 1
training_args['epoch'] = 1
training_args['val_best'] = 0.
if load_ckpt:
checkpointer.load_checkpoint(load_ckpt, strict=False)
if checkpointer.has_checkpoint():
extra_checkpoint_data = checkpointer.load()
training_args.update(extra_checkpoint_data)
# start_iter = training_args['iteration']
start_epoch = training_args['epoch']
checkpointer.current_val_best = training_args['val_best']
meters = MetricLogger(delimiter=" ")
end = time.time()
start_training_time = time.time()
for epoch in range(start_epoch, cfg.TRAIN.MAX_EPOCH + 1):
training_args['epoch'] = epoch
model.train()
for inner_iter, data in enumerate(train_dataloader):
# training_args['iteration'] = iteration
# logger.info('inner_iter: {}, label: {}'.format(inner_iter, data['label_articleType'], len(data['label_articleType'])))
data_time = time.time() - end
inputs, targets = data['image'].to(device), data['label_articleType'].to(device)
cls_scores = model(inputs, targets)
losses = model.loss_evaluator(cls_scores, targets)
metrics = model.metric_evaluator(cls_scores, targets)
total_loss = sum(loss for loss in losses.values())
meters.update(loss=total_loss, **losses, **metrics)
optimizer.zero_grad()
total_loss.backward()
optimizer.step()
batch_time = time.time() - end
end = time.time()
meters.update(time=batch_time, data=data_time)
if inner_iter % cfg.TRAIN.PRINT_PERIOD == 0:
eta_seconds = meters.time.global_avg * (len(train_dataloader) * cfg.TRAIN.MAX_EPOCH -
(epoch - 1) * len(train_dataloader) - inner_iter)
eta_string = str(datetime.timedelta(seconds=int(eta_seconds)))
logger.info(
meters.delimiter.join(
[
"eta: {eta}",
"epoch: {ep}/{max_ep} (iter: {iter}/{max_iter})",
"{meters}",
"lr: {lr:.6f}",
"max mem: {memory:.0f}",
]
).format(
eta=eta_string,
ep=epoch,
max_ep=cfg.TRAIN.MAX_EPOCH,
iter=inner_iter,
max_iter=len(train_dataloader),
meters=str(meters),
lr=optimizer.param_groups[-1]["lr"],
memory=(
torch.cuda.max_memory_allocated() / 1024.0 / 1024.0) if torch.cuda.is_available() else 0.,
)
)
if epoch % cfg.TRAIN.VAL_EPOCH == 0:
logger.info('start evaluating at epoch {}'.format(epoch))
val_metrics = do_eval(cfg, model, val_dataloader, logger, 'validation')
if val_metrics.mean_class_accuracy > checkpointer.current_val_best:
checkpointer.current_val_best = val_metrics.mean_class_accuracy
training_args['val_best'] = checkpointer.current_val_best
checkpointer.save("model_{:04d}_val_{:.4f}".format(epoch, checkpointer.current_val_best),
**training_args)
checkpointer.patience = 0
else:
checkpointer.patience += 1
logger.info('current patience: {}/{}'.format(checkpointer.patience, cfg.TRAIN.PATIENCE))
if epoch == cfg.TRAIN.MAX_EPOCH or epoch % cfg.TRAIN.SAVE_CKPT_EPOCH == 0 or checkpointer.patience == cfg.TRAIN.PATIENCE:
checkpointer.save("model_{:04d}".format(epoch), **training_args)
if checkpointer.patience == cfg.TRAIN.PATIENCE:
logger.info('Max patience triggered. Early terminate training')
break
if epoch % cfg.TRAIN.LR_DECAY_EPOCH == 0:
logger.info("lr decayed to {:.4f}".format(optimizer.param_groups[-1]["lr"]))
lr_scheduler.step()
total_training_time = time.time() - start_training_time
total_time_str = str(datetime.timedelta(seconds=total_training_time))
logger.info(
"Total training time: {} ({:.4f} s / epoch)".format(
total_time_str, total_training_time / (epoch - start_epoch if epoch > start_epoch else 1)
)
)
def main():
# argparse
parser = argparse.ArgumentParser()
parser.add_argument('--config_file',
help='path of config file',
default=None,
type=str)
parser.add_argument('--clean_run',
help='run from scratch',
default=False,
type=bool)
parser.add_argument('opts',
help='modify arguments',
default=None,
nargs=argparse.REMAINDER)
args = parser.parse_args()
# config setup
if args.config_file is not None:
cfg.merge_from_file(args.config_file)
if args.opts is not None: cfg.merge_from_list(args.opts)
cfg.freeze()
if args.clean_run:
if os.path.exists(f'../experiments/{cfg.SYSTEM.EXP_NAME}'):
shutil.rmtree(f'../experiments/{cfg.SYSTEM.EXP_NAME}')
if os.path.exists(f'../experiments/runs/{cfg.SYSTEM.EXP_NAME}'):
shutil.rmtree(f'../experiments/runs/{cfg.SYSTEM.EXP_NAME}')
# Note!: Sleeping to make tensorboard delete it's cache.
time.sleep(5)
search = defaultdict()
search['lr'], search['momentum'], search['factor'], search['step_size'] = [
True
] * 4
set_seeds(cfg)
logdir, chk_dir = save_config(cfg.SAVE_ROOT, cfg)
writer = SummaryWriter(log_dir=logdir)
# setup logger
logger_dir = Path(chk_dir).parent
logger = setup_logger(cfg.SYSTEM.EXP_NAME, save_dir=logger_dir)
# Model
prediction_model = BaseModule(cfg)
noise_model = NoiseModule(cfg)
model = [prediction_model, noise_model]
device = cfg.SYSTEM.DEVICE if torch.cuda.is_available() else 'cpu'
# load the data
train_loader = get_loader(cfg, 'train')
val_loader = get_loader(cfg, 'val')
prediction_model, noise_model = model
prediction_model.to(device)
lr = cfg.SOLVER.LR
momentum = cfg.SOLVER.MOMENTUM
weight_decay = cfg.SOLVER.WEIGHT_DECAY
betas = cfg.SOLVER.BETAS
step_size = cfg.SOLVER.STEP_SIZE
decay_factor = cfg.SOLVER.FACTOR
# Optimizer
if cfg.SOLVER.OPTIMIZER == 'Adam':
optimizer = optim.Adam(prediction_model.parameters(),
lr=lr,
weight_decay=weight_decay,
betas=betas)
elif cfg.SOLVER.OPTIMIZER == 'SGD':
optimizer = optim.SGD(prediction_model.parameters(),
lr=lr,
weight_decay=weight_decay,
momentum=momentum)
if cfg.SOLVER.SCHEDULER == 'StepLR':
scheduler = optim.lr_scheduler.StepLR(optimizer,
step_size=step_size,
gamma=decay_factor)
elif cfg.SOLVER.SCHEDULER == 'ReduceLROnPlateau':
scheduler = optim.lr_scheduler.ReduceLROnPlateau(
optimizer,
factor=cfg.SOLVER.FACTOR,
min_lr=cfg.SOLVER.MIN_LR,
patience=cfg.SOLVER.PAITENCE,
cooldown=cfg.SOLVER.COOLDOWN,
threshold=cfg.SOLVER.THRESHOLD,
eps=1e-24)
# checkpointer
chkpt = Checkpointer(prediction_model,
optimizer,
scheduler=scheduler,
save_dir=chk_dir,
logger=logger,
save_to_disk=True)
offset = 0
checkpointer = chkpt.load()
if not checkpointer == {}:
offset = checkpointer.pop('epoch')
loader = [train_loader, val_loader]
print(f'Same optimizer, {scheduler.optimizer == optimizer}')
print(cfg)
model = [prediction_model, noise_model]
train(cfg, model, optimizer, scheduler, loader, chkpt, writer, offset)
test_loader = get_loader(cfg, 'test')
test(cfg, prediction_model, test_loader, writer, logger)