def main():
# 1. Get input arguments
args = get_args()
# 2. Create config instance from args above
cfg = get_default_config()
cfg.use_gpu = torch.cuda.is_available()
if args.config_file:
cfg.merge_from_file(args.config_file)
reset_config(cfg, args)
cfg.merge_from_list(args.opts)
set_random_seed(cfg.train.seed)
log_name = 'test.log' if cfg.test.evaluate else 'train.log'
log_name += time.strftime('-%Y-%m-%d-%H-%M-%S')
sys.stdout = Logger(osp.join(cfg.data.save_dir, log_name))
print('Show configuration\n{}\n'.format(cfg))
print('Collecting env info ...')
print('** System info **\n{}\n'.format(collect_env_info()))
if cfg.use_gpu:
torch.backends.cudnn.benchmark = True
# 3. Create DataManager Instance
datamanager = build_datamanager(cfg)
print('Building model: {}'.format(cfg.model.name))
model = torchreid.models.build_model(
name=cfg.model.name,
num_classes=datamanager.num_train_pids,
loss=cfg.loss.name,
pretrained=cfg.model.pretrained,
use_gpu=cfg.use_gpu)
num_params, flops = compute_model_complexity(
model, (1, 3, cfg.data.height, cfg.data.width))
print('Model complexity: params={:,} flops={:,}'.format(num_params, flops))
if cfg.model.load_weights and check_isfile(cfg.model.load_weights):
load_pretrained_weights(model, cfg.model.load_weights)
if cfg.use_gpu:
model = nn.DataParallel(model).cuda()
optimizer = torchreid.optim.build_optimizer(model, **optimizer_kwargs(cfg))
scheduler = torchreid.optim.build_lr_scheduler(optimizer,
**lr_scheduler_kwargs(cfg))
if cfg.model.resume and check_isfile(cfg.model.resume):
cfg.train.start_epoch = resume_from_checkpoint(cfg.model.resume,
model,
optimizer=optimizer,
scheduler=scheduler)
print('Building {}-engine for {}-reid'.format(cfg.loss.name,
cfg.data.type))
# Build engine and run
engine = build_engine(cfg, datamanager, model, optimizer, scheduler)
engine.run(**engine_run_kwargs(cfg))
def build_auxiliary_model(config_file,
num_classes,
use_gpu,
device_ids,
num_iter,
lr=None,
nncf_aux_config_changes=None,
aux_config_opts=None,
aux_pretrained_dict=None):
aux_cfg = get_default_config()
aux_cfg.use_gpu = use_gpu
merge_from_files_with_base(aux_cfg, config_file)
if nncf_aux_config_changes:
print(
f'applying to aux config changes from NNCF aux config {nncf_aux_config_changes}'
)
if not isinstance(nncf_aux_config_changes, CfgNode):
nncf_aux_config_changes = CfgNode(nncf_aux_config_changes)
aux_cfg.merge_from_other_cfg(nncf_aux_config_changes)
if aux_config_opts:
print(f'applying to aux config changes from command line arguments, '
f'the changes are:\n{pformat(aux_config_opts)}')
aux_cfg.merge_from_list(aux_config_opts)
print(f'\nShow auxiliary configuration\n{aux_cfg}\n')
if lr is not None:
aux_cfg.train.lr = lr
print(f"setting learning rate from main model: {lr}")
model = torchreid.models.build_model(**model_kwargs(aux_cfg, num_classes))
optimizer = torchreid.optim.build_optimizer(model,
**optimizer_kwargs(aux_cfg))
scheduler = torchreid.optim.build_lr_scheduler(
optimizer=optimizer, num_iter=num_iter, **lr_scheduler_kwargs(aux_cfg))
if aux_cfg.model.resume and check_isfile(aux_cfg.model.resume):
aux_cfg.train.start_epoch = resume_from_checkpoint(
aux_cfg.model.resume,
model,
optimizer=optimizer,
scheduler=scheduler)
elif aux_pretrained_dict is not None:
load_pretrained_weights(model, pretrained_dict=aux_pretrained_dict)
elif aux_cfg.model.load_weights and check_isfile(
aux_cfg.model.load_weights):
load_pretrained_weights(model, aux_cfg.model.load_weights)
if aux_cfg.use_gpu:
assert device_ids is not None
if len(device_ids) > 1:
model = DataParallel(model, device_ids=device_ids,
output_device=0).cuda(device_ids[0])
else:
model = model.cuda(device_ids[0])
return model, optimizer, scheduler
def main():
global args
set_random_seed(args.seed)
if not args.use_avai_gpus:
os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_devices
use_gpu = torch.cuda.is_available() and not args.use_cpu
log_name = 'test.log' if args.evaluate else 'train.log'
log_name += time.strftime('-%Y-%m-%d-%H-%M-%S')
sys.stdout = Logger(osp.join(args.save_dir, log_name))
print('** Arguments **')
arg_keys = list(args.__dict__.keys())
arg_keys.sort()
for key in arg_keys:
print('{}: {}'.format(key, args.__dict__[key]))
print('\n')
print('Collecting env info ...')
print('** System info **\n{}\n'.format(collect_env_info()))
if use_gpu:
torch.backends.cudnn.benchmark = True
else:
warnings.warn(
'Currently using CPU, however, GPU is highly recommended')
datamanager = build_datamanager(args)
print('Building model: {}'.format(args.arch))
model = torchreid.models.build_model(
name=args.arch,
num_classes=datamanager.num_train_pids,
loss=args.loss.lower(),
pretrained=(not args.no_pretrained),
use_gpu=use_gpu)
num_params, flops = compute_model_complexity(
model, (1, 3, args.height, args.width))
print('Model complexity: params={:,} flops={:,}'.format(num_params, flops))
if args.load_weights and check_isfile(args.load_weights):
load_pretrained_weights(model, args.load_weights)
if use_gpu:
model = nn.DataParallel(model).cuda()
optimizer = torchreid.optim.build_optimizer(model,
**optimizer_kwargs(args))
scheduler = torchreid.optim.build_lr_scheduler(optimizer,
**lr_scheduler_kwargs(args))
if args.resume and check_isfile(args.resume):
args.start_epoch = resume_from_checkpoint(args.resume,
model,
optimizer=optimizer)
print('Building {}-engine for {}-reid'.format(args.loss, args.app))
engine = build_engine(args, datamanager, model, optimizer, scheduler)
engine.run(**engine_run_kwargs(args))
def main():
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('--config-file', type=str, default='', help='path to config file')
parser.add_argument('-s', '--sources', type=str, nargs='+', help='source datasets (delimited by space)')
parser.add_argument('-t', '--targets', type=str, nargs='+', help='target datasets (delimited by space)')
parser.add_argument('--root', type=str, default='', help='path to data root')
parser.add_argument('opts', default=None, nargs=argparse.REMAINDER,
help='Modify config options using the command-line')
args = parser.parse_args()
cfg = get_default_config()
cfg.use_gpu = torch.cuda.is_available()
if args.config_file:
cfg.merge_from_file(args.config_file)
reset_config(cfg, args)
cfg.merge_from_list(args.opts)
set_random_seed(cfg.train.seed)
log_name = 'test.log' if cfg.test.evaluate else 'train.log'
log_name += time.strftime('-%Y-%m-%d-%H-%M-%S')
sys.stdout = Logger(osp.join(cfg.data.save_dir, log_name))
print('Show configuration\n{}\n'.format(cfg))
print('Collecting env info ...')
print('** System info **\n{}\n'.format(collect_env_info()))
if cfg.use_gpu:
torch.backends.cudnn.benchmark = True
datamanager = build_datamanager(cfg)
print('Building model: {}'.format(cfg.model.name))
model = torchreid.models.build_model(**model_kwargs(cfg, datamanager.num_train_pids))
num_params, flops = compute_model_complexity(model, (1, 3, cfg.data.height, cfg.data.width))
print('Model complexity: params={:,} flops={:,}'.format(num_params, flops))
if cfg.model.load_weights and check_isfile(cfg.model.load_weights):
if cfg.model.pretrained and not cfg.test.evaluate:
state_dict = torch.load(cfg.model.load_weights)
model.load_pretrained_weights(state_dict)
else:
load_pretrained_weights(model, cfg.model.load_weights)
if cfg.use_gpu:
model = nn.DataParallel(model).cuda()
optimizer = torchreid.optim.build_optimizer(model, **optimizer_kwargs(cfg))
scheduler = torchreid.optim.build_lr_scheduler(optimizer, **lr_scheduler_kwargs(cfg))
if cfg.model.resume and check_isfile(cfg.model.resume):
cfg.train.start_epoch = resume_from_checkpoint(
cfg.model.resume, model, optimizer=optimizer, scheduler=scheduler
)
print('Building {}-engine for {}-reid'.format(cfg.loss.name, cfg.data.type))
engine = build_engine(cfg, datamanager, model, optimizer, scheduler)
engine.run(**engine_run_kwargs(cfg))
def main():
global args
set_random_seed(args.seed)
if not args.use_avai_gpus:
os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_devices
use_gpu = (torch.cuda.is_available() and not args.use_cpu)
log_name = 'test.log' if args.evaluate else 'train.log'
sys.stdout = Logger(osp.join(args.save_dir, log_name))
print('==========\nArgs:{}\n=========='.format(args))
if use_gpu:
print('Currently using GPU {}'.format(args.gpu_devices))
torch.backends.cudnn.benchmark = True
else:
warnings.warn(
'Currently using CPU, however, GPU is highly recommended')
datamanager = build_datamanager(args)
print('Building model: {}'.format(args.arch))
model = torchreid.models.build_model(
name=args.arch,
num_classes=datamanager.num_train_pids,
loss=args.loss.lower(),
pretrained=(not args.no_pretrained),
use_gpu=use_gpu)
num_params, flops = compute_model_complexity(
model, (1, 3, args.height, args.width))
print('Model complexity: params={:,} flops={:,}'.format(num_params, flops))
if args.load_weights and check_isfile(args.load_weights):
load_pretrained_weights(model, args.load_weights)
if use_gpu:
model = nn.DataParallel(model).cuda()
optimizer = torchreid.optim.build_optimizer(model,
**optimizer_kwargs(args))
scheduler = torchreid.optim.build_lr_scheduler(optimizer,
**lr_scheduler_kwargs(args))
if args.resume and check_isfile(args.resume):
args.start_epoch = resume_from_checkpoint(args.resume,
model,
optimizer=optimizer)
print('Building {}-engine for {}-reid'.format(args.loss, args.app))
engine = build_engine(args, datamanager, model, optimizer, scheduler)
engine.run(**engine_run_kwargs(args))
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter
)
parser.add_argument(
'--config-file', type=str, default='', help='path to config file'
)
parser.add_argument(
'-s',
'--sources',
type=str,
nargs='+',
help='source datasets (delimited by space)'
)
parser.add_argument(
'-t',
'--targets',
type=str,
nargs='+',
help='target datasets (delimited by space)'
)
parser.add_argument(
'--transforms', type=str, nargs='+', help='data augmentation'
)
parser.add_argument(
'--root', type=str, default='', help='path to data root'
)
parser.add_argument(
'--gpu-devices',
type=str,
default='',
)
parser.add_argument(
'opts',
default=None,
nargs=argparse.REMAINDER,
help='Modify config options using the command-line'
)
args = parser.parse_args()
cfg = get_default_config()
cfg.use_gpu = torch.cuda.is_available()
if args.config_file:
cfg.merge_from_file(args.config_file)
reset_config(cfg, args)
cfg.merge_from_list(args.opts)
set_random_seed(cfg.train.seed)
if cfg.use_gpu and args.gpu_devices:
# if gpu_devices is not specified, all available gpus will be used
os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_devices
log_name = 'test.log' if cfg.test.evaluate else 'train.log'
log_name += time.strftime('-%Y-%m-%d-%H-%M-%S')
sys.stdout = Logger(osp.join(cfg.data.save_dir, log_name))
print('Show configuration\n{}\n'.format(cfg))
print('Collecting env info ...')
print('** System info **\n{}\n'.format(collect_env_info()))
if cfg.use_gpu:
torch.backends.cudnn.benchmark = True
datamanager = torchreid.data.ImageDataManager(**imagedata_kwargs(cfg))
print('Building model: {}'.format(cfg.model.name))
model = osnet_models.build_model(
cfg.model.name, num_classes=datamanager.num_train_pids
)
num_params, flops = compute_model_complexity(
model, (1, 3, cfg.data.height, cfg.data.width)
)
print('Model complexity: params={:,} flops={:,}'.format(num_params, flops))
if cfg.use_gpu:
model = nn.DataParallel(model).cuda()
optimizer = torchreid.optim.build_optimizer(model, **optimizer_kwargs(cfg))
scheduler = torchreid.optim.build_lr_scheduler(
optimizer, **lr_scheduler_kwargs(cfg)
)
if cfg.model.resume and check_isfile(cfg.model.resume):
cfg.train.start_epoch = resume_from_checkpoint(
cfg.model.resume, model, optimizer=optimizer
)
print('Building NAS engine')
engine = ImageSoftmaxNASEngine(
datamanager,
model,
optimizer,
scheduler=scheduler,
use_gpu=cfg.use_gpu,
label_smooth=cfg.loss.softmax.label_smooth,
mc_iter=cfg.nas.mc_iter,
init_lmda=cfg.nas.init_lmda,
min_lmda=cfg.nas.min_lmda,
lmda_decay_step=cfg.nas.lmda_decay_step,
lmda_decay_rate=cfg.nas.lmda_decay_rate,
fixed_lmda=cfg.nas.fixed_lmda
)
engine.run(**engine_run_kwargs(cfg))
print('*** Display the found architecture ***')
if cfg.use_gpu:
model.module.build_child_graph()
else:
model.build_child_graph()
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('--config-file',
type=str,
default='',
help='path to config file')
parser.add_argument('-s',
'--sources',
type=str,
nargs='+',
help='source datasets (delimited by space)')
parser.add_argument('-t',
'--targets',
type=str,
nargs='+',
help='target datasets (delimited by space)')
parser.add_argument('--transforms',
type=str,
nargs='+',
help='data augmentation')
parser.add_argument('--root',
type=str,
default='',
help='path to data root')
parser.add_argument('opts',
default=None,
nargs=argparse.REMAINDER,
help='Modify config options using the command-line')
args = parser.parse_args()
cfg = get_default_config()
cfg.use_gpu = torch.cuda.is_available()
if args.config_file:
cfg.merge_from_file(args.config_file)
reset_config(cfg, args)
cfg.merge_from_list(args.opts)
set_random_seed(cfg.train.seed)
log_name = 'test.log' if cfg.test.evaluate else 'train.log'
log_name += time.strftime('-%Y-%m-%d-%H-%M-%S')
sys.stdout = Logger(osp.join(cfg.data.save_dir, log_name))
print('Show configuration\n{}\n'.format(cfg))
print('Collecting env info ...')
print('** System info **\n{}\n'.format(collect_env_info()))
if cfg.use_gpu:
torch.backends.cudnn.benchmark = True
datamanager = torchreid.data.ImageDataManager(**imagedata_kwargs(cfg))
print('Building model-1: {}'.format(cfg.model.name))
model1 = torchreid.models.build_model(
name=cfg.model.name,
num_classes=datamanager.num_train_pids,
loss=cfg.loss.name,
pretrained=cfg.model.pretrained,
use_gpu=cfg.use_gpu)
num_params, flops = compute_model_complexity(
model1, (1, 3, cfg.data.height, cfg.data.width))
print('Model complexity: params={:,} flops={:,}'.format(num_params, flops))
print('Copying model-1 to model-2')
model2 = copy.deepcopy(model1)
if cfg.model.load_weights1 and check_isfile(cfg.model.load_weights1):
load_pretrained_weights(model1, cfg.model.load_weights1)
if cfg.model.load_weights2 and check_isfile(cfg.model.load_weights2):
load_pretrained_weights(model2, cfg.model.load_weights2)
if cfg.use_gpu:
model1 = nn.DataParallel(model1).cuda()
model2 = nn.DataParallel(model2).cuda()
optimizer1 = torchreid.optim.build_optimizer(model1,
**optimizer_kwargs(cfg))
scheduler1 = torchreid.optim.build_lr_scheduler(optimizer1,
**lr_scheduler_kwargs(cfg))
optimizer2 = torchreid.optim.build_optimizer(model2,
**optimizer_kwargs(cfg))
scheduler2 = torchreid.optim.build_lr_scheduler(optimizer2,
**lr_scheduler_kwargs(cfg))
if cfg.model.resume1 and check_isfile(cfg.model.resume1):
cfg.train.start_epoch = resume_from_checkpoint(cfg.model.resume1,
model1,
optimizer=optimizer1,
scheduler=scheduler1)
if cfg.model.resume2 and check_isfile(cfg.model.resume2):
resume_from_checkpoint(cfg.model.resume2,
model2,
optimizer=optimizer2,
scheduler=scheduler2)
print('Building DML-engine for image-reid')
engine = ImageDMLEngine(datamanager,
model1,
optimizer1,
scheduler1,
model2,
optimizer2,
scheduler2,
margin=cfg.loss.triplet.margin,
weight_t=cfg.loss.triplet.weight_t,
weight_x=cfg.loss.triplet.weight_x,
weight_ml=cfg.loss.dml.weight_ml,
use_gpu=cfg.use_gpu,
label_smooth=cfg.loss.softmax.label_smooth,
deploy=cfg.model.deploy)
engine.run(**engine_run_kwargs(cfg))
def main():
parser = build_base_argparser()
parser.add_argument('-e',
'--auxiliary-models-cfg',
type=str,
nargs='*',
default='',
help='path to extra config files')
parser.add_argument('--split-models',
action='store_true',
help='whether to split models on own gpu')
parser.add_argument('--enable_quantization',
action='store_true',
help='Enable NNCF quantization algorithm')
parser.add_argument('--enable_pruning',
action='store_true',
help='Enable NNCF pruning algorithm')
parser.add_argument(
'--aux-config-opts',
nargs='+',
default=None,
help='Modify aux config options using the command-line')
args = parser.parse_args()
cfg = get_default_config()
cfg.use_gpu = torch.cuda.is_available() and args.gpu_num > 0
if args.config_file:
merge_from_files_with_base(cfg, args.config_file)
reset_config(cfg, args)
cfg.merge_from_list(args.opts)
is_nncf_used = args.enable_quantization or args.enable_pruning
if is_nncf_used:
print(f'Using NNCF -- making NNCF changes in config')
cfg = make_nncf_changes_in_config(cfg, args.enable_quantization,
args.enable_pruning, args.opts)
set_random_seed(cfg.train.seed, cfg.train.deterministic)
log_name = 'test.log' if cfg.test.evaluate else 'train.log'
log_name += time.strftime('-%Y-%m-%d-%H-%M-%S')
sys.stdout = Logger(osp.join(cfg.data.save_dir, log_name))
print('Show configuration\n{}\n'.format(cfg))
if cfg.use_gpu:
torch.backends.cudnn.benchmark = True
num_aux_models = len(cfg.mutual_learning.aux_configs)
datamanager = build_datamanager(cfg, args.classes)
num_train_classes = datamanager.num_train_pids
print('Building main model: {}'.format(cfg.model.name))
model = torchreid.models.build_model(
**model_kwargs(cfg, num_train_classes))
macs, num_params = get_model_complexity_info(
model, (3, cfg.data.height, cfg.data.width),
as_strings=False,
verbose=False,
print_per_layer_stat=False)
print('Main model complexity: params={:,} flops={:,}'.format(
num_params, macs * 2))
aux_lr = cfg.train.lr # placeholder, needed for aux models, may be filled by nncf part below
if is_nncf_used:
print('Begin making NNCF changes in model')
if cfg.use_gpu:
model.cuda()
compression_ctrl, model, cfg, aux_lr, nncf_metainfo = \
make_nncf_changes_in_training(model, cfg,
args.classes,
args.opts)
should_freeze_aux_models = True
print(f'should_freeze_aux_models = {should_freeze_aux_models}')
print('End making NNCF changes in model')
else:
compression_ctrl = None
should_freeze_aux_models = False
nncf_metainfo = None
# creating optimizer and scheduler -- it should be done after NNCF part, since
# NNCF could change some parameters
optimizer = torchreid.optim.build_optimizer(model, **optimizer_kwargs(cfg))
if cfg.lr_finder.enable and not cfg.model.resume:
scheduler = None
else:
scheduler = torchreid.optim.build_lr_scheduler(
optimizer=optimizer,
num_iter=datamanager.num_iter,
**lr_scheduler_kwargs(cfg))
# Loading model (and optimizer and scheduler in case of resuming training).
# Note that if NNCF is used, loading is done inside NNCF part, so loading here is not required.
if cfg.model.resume and check_isfile(
cfg.model.resume) and not is_nncf_used:
device_ = 'cuda' if cfg.use_gpu else 'cpu'
cfg.train.start_epoch = resume_from_checkpoint(cfg.model.resume,
model,
optimizer=optimizer,
scheduler=scheduler,
device=device_)
elif cfg.model.load_weights and not is_nncf_used:
load_pretrained_weights(model, cfg.model.load_weights)
if cfg.model.type == 'classification':
check_classification_classes(model,
datamanager,
args.classes,
test_only=cfg.test.evaluate)
model, extra_device_ids = put_main_model_on_the_device(
model, cfg.use_gpu, args.gpu_num, num_aux_models, args.split_models)
if cfg.lr_finder.enable and not cfg.test.evaluate and not cfg.model.resume:
aux_lr, model, optimizer, scheduler = run_lr_finder(
cfg,
datamanager,
model,
optimizer,
scheduler,
args.classes,
rebuild_model=True,
gpu_num=args.gpu_num,
split_models=args.split_models)
log_dir = cfg.data.tb_log_dir if cfg.data.tb_log_dir else cfg.data.save_dir
run_training(cfg,
datamanager,
model,
optimizer,
scheduler,
extra_device_ids,
aux_lr,
tb_writer=SummaryWriter(log_dir=log_dir),
should_freeze_aux_models=should_freeze_aux_models,
nncf_metainfo=nncf_metainfo,
compression_ctrl=compression_ctrl)
def main():
# Load model configuration
parser = argparse.ArgumentParser()
parser.add_argument('-c',
'--config',
required=True,
help='path to configuration file')
args = parser.parse_args()
with open(args.config, "r") as ymlfile:
config = yaml.load(ymlfile, Loader=yaml.FullLoader)
# Automatically add sub-folder name to config["save_dir"], with the same name
# as the config file. For example, config["save_dir"] is typically "logs",
# so this would change config["save_dir"] to "logs/exp01", for example, so that
# we don't need to change the save_dir in every single config file (it instead
# automatically generates it from the name of the config file).
experiment_number = pathlib.Path(args.config).stem
config["save_dir"] = os.path.join(config["save_dir"], experiment_number)
# Set random seeds
set_random_seed(config["seed"])
# Set up GPU
if not config["use_avai_gpus"]:
os.environ['CUDA_VISIBLE_DEVICES'] = config["gpu_devices"]
use_gpu = torch.cuda.is_available() and not config["use_cpu"]
# Set up log files
log_name = 'test.log' if config["evaluate"] else 'train.log'
log_name += time.strftime('-%Y-%m-%d-%H-%M-%S')
sys.stdout = Logger(osp.join(config["save_dir"], log_name))
# Prepare for training
print('==========\nArgs:{}\n=========='.format(config))
print('Collecting env info ...')
print('** System info **\n{}\n'.format(collect_env_info()))
if use_gpu:
torch.backends.cudnn.benchmark = True
else:
warnings.warn(
'Currently using CPU, however, GPU is highly recommended')
# Build datamanager and model
datamanager = build_datamanager(config)
print('Building model: {}'.format(config["arch"]))
model = torchreid.models.build_model(
name=config["arch"],
num_classes=datamanager.num_train_pids,
loss=config["loss"].lower(),
pretrained=(not config["no_pretrained"]),
use_gpu=use_gpu)
# Compute model complexity
num_params, flops = compute_model_complexity(
model, (1, 3, config["height"], config["width"]))
print('Model complexity: params={:,} flops={:,}'.format(num_params, flops))
# Load pretrained weights if necessary
if config["load_weights"] and check_isfile(config["load_weights"]):
load_pretrained_weights(model, config["load_weights"])
# Set up multi-gpu
if use_gpu:
model = nn.DataParallel(model).cuda()
# Model settings
optimizer = torchreid.optim.build_optimizer(model,
**optimizer_kwargs(config))
scheduler = torchreid.optim.build_lr_scheduler(
optimizer, **lr_scheduler_kwargs(config))
if config["resume"] and check_isfile(config["resume"]):
config["start_epoch"] = resume_from_checkpoint(config["resume"],
model,
optimizer=optimizer)
print('Building {}-engine for {}-reid'.format(config["loss"],
config["app"]))
engine = build_engine(config, datamanager, model, optimizer, scheduler)
engine.run(**engine_run_kwargs(config))