def test_update(self):
meter = MetricLogger()
for i in range(10):
meter.update(metric=float(i))
m = meter.meters["metric"]
self.assertEqual(m.count, 10)
self.assertEqual(m.total, 45)
self.assertEqual(m.median, 4)
self.assertEqual(m.avg, 4.5)
def test_no_attr(self):
meter = MetricLogger()
_ = meter.meters
_ = meter.delimiter
def broken():
_ = meter.not_existent
self.assertRaises(AttributeError, broken)
def do_train(
model,
data_loader,
optimizer,
scheduler,
checkpointer,
device,
checkpoint_period,
arguments,
):
logger = logging.getLogger("fcos_core.trainer")
logger.info("Start training")
meters = MetricLogger(delimiter=" ")
max_iter = len(data_loader)
start_iter = arguments["iteration"]
model.train()
start_training_time = time.time()
end = time.time()
pytorch_1_1_0_or_later = is_pytorch_1_1_0_or_later()
for iteration, (images, targets, _) in enumerate(data_loader, start_iter):
data_time = time.time() - end
iteration = iteration + 1
arguments["iteration"] = iteration
# in pytorch >= 1.1.0, scheduler.step() should be run after optimizer.step()
if not pytorch_1_1_0_or_later:
scheduler.step()
images = images.to(device)
targets = [target.to(device) for target in targets]
loss_dict = model(images, targets)
losses = sum(loss for loss in loss_dict.values())
if losses > 1e5:
import pdb
pdb.set_trace()
# reduce losses over all GPUs for logging purposes
loss_dict_reduced = reduce_loss_dict(loss_dict)
losses_reduced = sum(loss for loss in loss_dict_reduced.values())
meters.update(loss=losses_reduced, **loss_dict_reduced)
optimizer.zero_grad()
losses.backward()
optimizer.step()
if pytorch_1_1_0_or_later:
scheduler.step()
batch_time = time.time() - end
end = time.time()
meters.update(time=batch_time, data=data_time)
eta_seconds = meters.time.global_avg * (max_iter - iteration)
eta_string = str(datetime.timedelta(seconds=int(eta_seconds)))
if iteration % 20 == 0 or iteration == max_iter:
logger.info(
meters.delimiter.join([
"eta: {eta}",
"iter: {iter}",
"{meters}",
"lr: {lr:.6f}",
"max mem: {memory:.0f}",
]).format(
eta=eta_string,
iter=iteration,
meters=str(meters),
lr=optimizer.param_groups[0]["lr"],
memory=torch.cuda.max_memory_allocated() / 1024.0 / 1024.0,
))
if iteration % checkpoint_period == 0:
checkpointer.save("model_{:07d}".format(iteration), **arguments)
if iteration == max_iter:
checkpointer.save("model_final", **arguments)
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 / it)".format(
total_time_str, total_training_time / (max_iter)))
def do_train(
model,
arch,
data_loader,
val_loader,
optimizer,
alpha_optim,
scheduler,
checkpointer,
device,
checkpoint_period,
arguments,
cfg,
tb_info={},
first_order=True,
):
logger = logging.getLogger("fad_core.trainer")
logger.info("Start the architecture search")
meters = MetricLogger(delimiter=" ")
max_iter = len(data_loader)
start_iter = arguments["iteration"]
model.train()
start_training_time = time.time()
end = time.time()
pytorch_1_1_0_or_later = is_pytorch_1_1_0_or_later()
Genotype = model.genotype()
iteration = 0
for n_m, genotype in enumerate(Genotype):
logger.info("genotype = {}".format(genotype))
for iteration, ((images, targets, _),
(images_val, targets_val,
_)) in enumerate(zip(data_loader, val_loader),
start_iter):
data_time = time.time() - end
iteration = iteration + 1
arguments["iteration"] = iteration
scheduler.step()
if len(targets) == cfg.SOLVER.IMS_PER_BATCH and len(
targets_val) == cfg.SOLVER.IMS_PER_BATCH:
images = images.to(device)
targets = [target.to(device) for target in targets]
images_val = images_val.to(device)
targets_val = [target.to(device) for target in targets_val]
# -------------- update alpha
lr = scheduler.get_lr()[0]
alpha_optim.zero_grad()
if not first_order:
# ----- 2nd order
arch.unrolled_backward(images, targets, images_val,
targets_val, lr, optimizer)
else:
# ----- 1st order
arch.first_order_backward(images_val, targets_val)
alpha_optim.step()
# --------------- update w
loss_dict = model(images, targets)
losses = sum(loss for loss in loss_dict.values())
# reduce losses over all GPUs for logging purposes
loss_dict_reduced = reduce_loss_dict(loss_dict)
losses_reduced = sum(loss for loss in loss_dict_reduced.values())
for lkey, lval in loss_dict_reduced.items():
loss_dict_reduced[lkey] = lval.mean()
meters.update(loss=losses_reduced.mean(), **loss_dict_reduced)
# --------- tensorboard logger
tb_logger = tb_info.get('tb_logger', None)
if tb_logger:
tb_prefix = '{}loss'.format(tb_info['prefix'])
tb_logger.add_scalar(tb_prefix, losses_reduced.mean(),
iteration)
for key, value in loss_dict_reduced.items():
tb_prefix = "{}{}".format(tb_info['prefix'], key)
tb_logger.add_scalar(tb_prefix, value, iteration)
tb_prefix = '{}loss'.format(tb_info['prefix'])
tb_logger.add_scalar(tb_prefix + '_z_lr', lr, iteration)
optimizer.zero_grad()
losses.mean().backward()
torch.nn.utils.clip_grad_norm_(model.weights(), 20)
optimizer.step()
batch_time = time.time() - end
end = time.time()
meters.update(time=batch_time, data=data_time)
eta_seconds = meters.time.global_avg * (max_iter - iteration)
eta_string = str(datetime.timedelta(seconds=int(eta_seconds)))
if iteration % 20 == 0 or iteration == max_iter:
logger.info(
meters.delimiter.join([
"eta: {eta}",
"iter: {iter}",
"{meters}",
"lr: {lr:.6f}",
"max mem: {memory:.0f}",
]).format(
eta=eta_string,
iter=iteration,
meters=str(meters),
lr=optimizer.param_groups[0]["lr"],
memory=torch.cuda.max_memory_allocated() / 1024.0 /
1024.0,
))
if iteration % (checkpoint_period) == 0:
checkpointer.save("model_{:07d}".format(iteration),
**arguments)
if iteration == max_iter:
checkpointer.save("model_final", **arguments)
# ---------- save genotype
if cfg.MODEL.FAD.PLOT and (iteration % checkpoint_period == 0):
Genotype = model.genotype()
fw = open(f"{cfg.OUTPUT_DIR}/genotype.log", "w")
for n_m, genotype in enumerate(Genotype):
logger.info("genotype = {}".format(genotype))
# write genotype for augment
fw.write(f"{genotype}\n")
# genotype as a image
plot_path = os.path.join(cfg.OUTPUT_DIR + '/plots',
"Module%d" % n_m,
"Iter{:06d}".format(iteration))
caption = "Iteration {}".format(iteration)
plot(genotype.normal, plot_path + "-normal", caption)
model.print_alphas(logger)
fw.close()
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 / it)".format(
total_time_str, total_training_time / (max_iter)))
def do_train(model, data_loader, optimizer, scheduler, checkpointer, device,
checkpoint_period, arguments, cfg, run_test, distributed, writer,
seperate_dis):
USE_DIS_GLOBAL = arguments["use_dis_global"]
USE_DIS_CENTER_AWARE = arguments["use_dis_ca"]
USE_DIS_CONDITIONAL = arguments["use_dis_conditional"]
USE_DIS_HEAD = arguments["use_dis_ha"]
used_feature_layers = arguments["use_feature_layers"]
used_feature_layers = ['P7', 'P6', 'P5', 'P4', 'P3']
# dataloader
data_loader_source = data_loader["source"]
data_loader_target = data_loader["target"]
# classified label of source domain and target domain
source_label = 1.0
target_label = 0.0
# dis_lambda
if USE_DIS_GLOBAL:
ga_dis_lambda = arguments["ga_dis_lambda"]
if USE_DIS_CENTER_AWARE:
ca_dis_lambda = arguments["ca_dis_lambda"]
if USE_DIS_CONDITIONAL:
cond_dis_lambda = arguments["cond_dis_lambda"]
if USE_DIS_HEAD:
ha_dis_lambda = arguments["ha_dis_lambda"]
# Start training
logger = logging.getLogger("fcos_core.trainer")
logger.info("Start training")
# model.train()
for k in model:
model[k].train()
meters = MetricLogger(delimiter=" ")
assert len(data_loader_source) == len(data_loader_target)
max_iter = max(len(data_loader_source), len(data_loader_target))
start_iter = arguments["iteration"]
start_training_time = time.time()
end = time.time()
pytorch_1_1_0_or_later = is_pytorch_1_1_0_or_later()
best_map50 = 0.0
# results = run_test(cfg, model, distributed)
# exit()
for iteration, ((images_s, targets_s, _), (images_t, _, _)) \
in enumerate(zip(data_loader_source, data_loader_target), start_iter):
data_time = time.time() - end
iteration = iteration + 1
arguments["iteration"] = iteration
alpha = max(
1 - iteration / cfg.MODEL.ADV.COND_WARMUP_ITER,
cfg.MODEL.ADV.COND_ALPHA
) if cfg.MODEL.ADV.COND_SMOOTH else cfg.MODEL.ADV.COND_ALPHA
cf_th = cfg.MODEL.ADV.COND_CONF
# in pytorch >= 1.1.0, scheduler.step() should be run after optimizer.step()
if not pytorch_1_1_0_or_later:
# scheduler.step()
for k in scheduler:
scheduler[k].step()
images_s = images_s.to(device)
targets_s = [target_s.to(device) for target_s in targets_s]
images_t = images_t.to(device)
# targets_t = [target_t.to(device) for target_t in targets_t]
# optimizer.zero_grad()
for k in optimizer:
optimizer[k].zero_grad()
##########################################################################
#################### (1): train G with source domain #####################
##########################################################################
loss_dict, features_s, score_maps_s = foward_detector(
model, images_s, targets=targets_s, return_maps=True)
labels = loss_dict['labels']
reg_targets = loss_dict['reg_targets']
# rename loss to indicate domain
loss_dict = {k + "_gs": loss_dict[k] for k in loss_dict if 'loss' in k}
losses = sum(loss for loss in loss_dict.values())
# reduce losses over all GPUs for logging purposes
loss_dict_reduced = reduce_loss_dict(loss_dict)
losses_reduced = sum(loss for loss in loss_dict_reduced.values())
meters.update(loss_gs=losses_reduced, **loss_dict_reduced)
writer.add_scalar('Loss_FCOS/gs', losses, iteration)
writer.add_scalar('Loss_FCOS/cls_gs', loss_dict['loss_cls_gs'],
iteration)
writer.add_scalar('Loss_FCOS/reg_gs', loss_dict['loss_reg_gs'],
iteration)
writer.add_scalar('Loss_FCOS/centerness_gs',
loss_dict['loss_centerness_gs'], iteration)
# losses.backward(retain_graph=True)
del loss_dict, losses
##########################################################################
#################### (2): train D with source domain #####################
##########################################################################
loss_dict = {}
stat = {}
for layer in used_feature_layers:
# detatch score_map
for map_type in score_maps_s[layer]:
score_maps_s[layer][map_type] = score_maps_s[layer][
map_type].detach()
if seperate_dis:
if USE_DIS_GLOBAL:
loss_dict["loss_adv_%s_ds" % layer] = \
ga_dis_lambda * model["dis_%s" % layer](features_s[layer], source_label, domain='source')
if USE_DIS_CENTER_AWARE:
loss_dict["loss_adv_%s_CA_ds" % layer] = \
ca_dis_lambda * model["dis_%s_CA" % layer](features_s[layer], source_label, score_maps_s[layer], domain='source')
if USE_DIS_CONDITIONAL:
loss_cond_l, cur_stat, idx = \
model["dis_%s_Cond" % layer](features_s[layer], source_label, score_maps_s[layer], domain='source', alpha=alpha, labels=labels[int(layer[1])-3], reg_targets=reg_targets[int(layer[1])-3], conf_th=cf_th)
stat["%s_source_left" %
layer] = [s / idx for s in cur_stat]
loss_cond_t, cur_idx, idx = \
model["dis_%s_Cond_t" % layer](features_s[layer], source_label, score_maps_s[layer], domain='source', alpha=alpha, labels=labels[int(layer[1])-3], reg_targets=reg_targets[int(layer[1])-3], conf_th=cf_th)
stat["%s_source_top" % layer] = [s / idx for s in cur_stat]
loss_dict["loss_adv_%s_Cond_ds" %
layer] = cond_dis_lambda * (loss_cond_l +
loss_cond_t)
if USE_DIS_HEAD:
loss_dict["loss_adv_%s_HA_ds" % layer] = \
ha_dis_lambda * model["dis_%s_HA" % layer](source_label, score_maps_s[layer], domain='source')
else:
if USE_DIS_GLOBAL:
loss_dict["loss_adv_%s_ds" % layer] = \
ga_dis_lambda * model["dis_P7"](features_s[layer], source_label, domain='source')
if USE_DIS_CENTER_AWARE:
loss_dict["loss_adv_%s_CA_ds" % layer] = \
ca_dis_lambda * model["dis_P7_CA"](features_s[layer], source_label, score_maps_s[layer], domain='source')
if USE_DIS_CONDITIONAL:
loss_dict["loss_adv_%s_Cond_ds" % layer] = \
cond_dis_lambda * model["dis_P7_Cond"](features_s[layer], source_label, score_maps_s[layer], domain='source', alpha=alpha)
if USE_DIS_HEAD:
loss_dict["loss_adv_%s_HA_ds" % layer] = \
ha_dis_lambda * model["dis_P7_HA"](source_label, score_maps_s[layer], domain='source')
losses = sum(loss for loss in loss_dict.values())
writer.add_scalar('Loss_DISC/ds', losses, iteration)
if USE_DIS_GLOBAL:
writer.add_scalar('Loss_DISC/P3_ds', loss_dict['loss_adv_P3_ds'],
iteration)
writer.add_scalar('Loss_DISC/P4_ds', loss_dict['loss_adv_P4_ds'],
iteration)
writer.add_scalar('Loss_DISC/P5_ds', loss_dict['loss_adv_P5_ds'],
iteration)
writer.add_scalar('Loss_DISC/P6_ds', loss_dict['loss_adv_P6_ds'],
iteration)
writer.add_scalar('Loss_DISC/P7_ds', loss_dict['loss_adv_P7_ds'],
iteration)
if USE_DIS_CENTER_AWARE:
writer.add_scalar('Loss_DISC/P3_CA_ds',
loss_dict['loss_adv_P3_CA_ds'], iteration)
writer.add_scalar('Loss_DISC/P4_CA_ds',
loss_dict['loss_adv_P4_CA_ds'], iteration)
writer.add_scalar('Loss_DISC/P5_CA_ds',
loss_dict['loss_adv_P5_CA_ds'], iteration)
writer.add_scalar('Loss_DISC/P6_CA_ds',
loss_dict['loss_adv_P6_CA_ds'], iteration)
writer.add_scalar('Loss_DISC/P7_CA_ds',
loss_dict['loss_adv_P7_CA_ds'], iteration)
if USE_DIS_CONDITIONAL:
writer.add_scalar('Loss_DISC/P3_Cond_ds',
loss_dict['loss_adv_P3_Cond_ds'], iteration)
writer.add_scalar('Loss_DISC/P4_Cond_ds',
loss_dict['loss_adv_P4_Cond_ds'], iteration)
writer.add_scalar('Loss_DISC/P5_Cond_ds',
loss_dict['loss_adv_P5_Cond_ds'], iteration)
writer.add_scalar('Loss_DISC/P6_Cond_ds',
loss_dict['loss_adv_P6_Cond_ds'], iteration)
writer.add_scalar('Loss_DISC/P7_Cond_ds',
loss_dict['loss_adv_P7_Cond_ds'], iteration)
for layer in used_feature_layers:
for i in range(3):
writer.add_scalar(
'Stat/{}/Source_{}_left'.format(layer, i),
stat['%s_source_left' % layer][i], iteration)
writer.add_scalar('Stat/{}/Source_{}_top'.format(layer, i),
stat['%s_source_top' % layer][i],
iteration)
if USE_DIS_HEAD:
writer.add_scalar('Loss_DISC/P3_HA_ds',
loss_dict['loss_adv_P3_HA_ds'], iteration)
writer.add_scalar('Loss_DISC/P4_HA_ds',
loss_dict['loss_adv_P4_HA_ds'], iteration)
writer.add_scalar('Loss_DISC/P5_HA_ds',
loss_dict['loss_adv_P5_HA_ds'], iteration)
writer.add_scalar('Loss_DISC/P6_HA_ds',
loss_dict['loss_adv_P6_HA_ds'], iteration)
writer.add_scalar('Loss_DISC/P7_HA_ds',
loss_dict['loss_adv_P7_HA_ds'], iteration)
# reduce losses over all GPUs for logging purposes
loss_dict_reduced = reduce_loss_dict(loss_dict)
losses_reduced = sum(loss for loss in loss_dict_reduced.values())
meters.update(loss_ds=losses_reduced, **loss_dict_reduced)
# losses.backward()
del loss_dict, losses
##########################################################################
#################### (3): train D with target domain #####################
#################################################################
loss_dict, features_t, score_maps_t = foward_detector(model,
images_t,
return_maps=True)
assert len(loss_dict) == 1 and loss_dict[
"zero"] == 0 # loss_dict should be empty dict
# loss_dict["loss_adv_Pn"] = model_dis_Pn(features_t["Pn"], target_label, domain='target')
for layer in used_feature_layers:
# detatch score_map
for map_type in score_maps_t[layer]:
score_maps_t[layer][map_type] = score_maps_t[layer][
map_type].detach()
if seperate_dis:
if USE_DIS_GLOBAL:
loss_dict["loss_adv_%s_dt" % layer] = \
ga_dis_lambda * model["dis_%s" % layer](features_t[layer], target_label, domain='target')
if USE_DIS_CENTER_AWARE:
loss_dict["loss_adv_%s_CA_dt" %layer] = \
ca_dis_lambda * model["dis_%s_CA" % layer](features_t[layer], target_label, score_maps_t[layer], domain='target')
if USE_DIS_CONDITIONAL:
loss_cond_l, cur_stat, idx = \
model["dis_%s_Cond" % layer](features_t[layer], target_label, score_maps_t[layer], domain='target', alpha=alpha, conf_th=cf_th)
stat["%s_target_left" %
layer] = [s / idx for s in cur_stat]
loss_cond_t, cur_stat, idx = \
model["dis_%s_Cond_t" % layer](features_t[layer], target_label, score_maps_t[layer], domain='target', alpha=alpha, conf_th=cf_th)
stat["%s_target_top" % layer] = [s / idx for s in cur_stat]
loss_dict["loss_adv_%s_Cond_dt" %
layer] = cond_dis_lambda * (loss_cond_l +
loss_cond_t)
if USE_DIS_HEAD:
loss_dict["loss_adv_%s_HA_dt" %layer] = \
ha_dis_lambda * model["dis_%s_HA" % layer](target_label, score_maps_t[layer], domain='target')
else:
if USE_DIS_GLOBAL:
loss_dict["loss_adv_%s_dt" % layer] = \
ga_dis_lambda * model["dis_P7"](features_s[layer], source_label, domain='target')
if USE_DIS_CENTER_AWARE:
loss_dict["loss_adv_%s_CA_dt" % layer] = \
ca_dis_lambda * model["dis_P7_CA"](features_s[layer], source_label, score_maps_s[layer], domain='target')
if USE_DIS_CONDITIONAL:
loss_dict["loss_adv_%s_Cond_dt" % layer] = \
cond_dis_lambda * model["dis_P7_Cond"](features_s[layer], source_label, score_maps_s[layer], domain='target', alpha=alpha)
if USE_DIS_HEAD:
loss_dict["loss_adv_%s_HA_dt" % layer] = \
ha_dis_lambda * model["dis_P7_HA"](source_label, score_maps_s[layer], domain='target')
losses = sum(loss for loss in loss_dict.values())
writer.add_scalar('Loss_DISC/dt', losses, iteration)
if USE_DIS_GLOBAL:
writer.add_scalar('Loss_DISC/P3_dt', loss_dict['loss_adv_P3_dt'],
iteration)
writer.add_scalar('Loss_DISC/P4_dt', loss_dict['loss_adv_P4_dt'],
iteration)
writer.add_scalar('Loss_DISC/P5_dt', loss_dict['loss_adv_P5_dt'],
iteration)
writer.add_scalar('Loss_DISC/P6_dt', loss_dict['loss_adv_P6_dt'],
iteration)
writer.add_scalar('Loss_DISC/P7_dt', loss_dict['loss_adv_P7_dt'],
iteration)
if USE_DIS_CENTER_AWARE:
writer.add_scalar('Loss_DISC/P3_CA_dt',
loss_dict['loss_adv_P3_CA_dt'], iteration)
writer.add_scalar('Loss_DISC/P4_CA_dt',
loss_dict['loss_adv_P4_CA_dt'], iteration)
writer.add_scalar('Loss_DISC/P5_CA_dt',
loss_dict['loss_adv_P5_CA_dt'], iteration)
writer.add_scalar('Loss_DISC/P6_CA_dt',
loss_dict['loss_adv_P6_CA_dt'], iteration)
writer.add_scalar('Loss_DISC/P7_CA_dt',
loss_dict['loss_adv_P7_CA_dt'], iteration)
if USE_DIS_CONDITIONAL:
writer.add_scalar('Loss_DISC/P3_Cond_dt',
loss_dict['loss_adv_P3_Cond_dt'], iteration)
writer.add_scalar('Loss_DISC/P4_Cond_dt',
loss_dict['loss_adv_P4_Cond_dt'], iteration)
writer.add_scalar('Loss_DISC/P5_Cond_dt',
loss_dict['loss_adv_P5_Cond_dt'], iteration)
writer.add_scalar('Loss_DISC/P6_Cond_dt',
loss_dict['loss_adv_P6_Cond_dt'], iteration)
writer.add_scalar('Loss_DISC/P7_Cond_dt',
loss_dict['loss_adv_P7_Cond_dt'], iteration)
for layer in used_feature_layers:
for i in range(3):
writer.add_scalar(
'Stat/{}/Target_{}_left'.format(layer, i),
stat['%s_target_left' % layer][i], iteration)
writer.add_scalar('Stat/{}/Target_{}_top'.format(layer, i),
stat['%s_target_top' % layer][i],
iteration)
if USE_DIS_HEAD:
writer.add_scalar('Loss_DISC/P3_HA_dt',
loss_dict['loss_adv_P3_HA_dt'], iteration)
writer.add_scalar('Loss_DISC/P4_HA_dt',
loss_dict['loss_adv_P4_HA_dt'], iteration)
writer.add_scalar('Loss_DISC/P5_HA_dt',
loss_dict['loss_adv_P5_HA_dt'], iteration)
writer.add_scalar('Loss_DISC/P6_HA_dt',
loss_dict['loss_adv_P6_HA_dt'], iteration)
writer.add_scalar('Loss_DISC/P7_HA_dt',
loss_dict['loss_adv_P7_HA_dt'], iteration)
# del "zero" (useless after backward)
del loss_dict['zero']
# reduce losses over all GPUs for logging purposes
loss_dict_reduced = reduce_loss_dict(loss_dict)
losses_reduced = sum(loss for loss in loss_dict_reduced.values())
meters.update(loss_dt=losses_reduced, **loss_dict_reduced)
# # saved GRL gradient
# grad_list = []
# for layer in used_feature_layers:
# def save_grl_grad(grad):
# grad_list.append(grad)
# features_t[layer].register_hook(save_grl_grad)
#
# losses.backward()
#
# ##########################################################################
# ##########################################################################
# ##########################################################################
# max_norm = 5
# for k in model:
# torch.nn.utils.clip_grad_norm_(model[k].parameters(), max_norm)
#
# # optimizer.step()
# for k in optimizer:
# optimizer[k].step()
#
# if pytorch_1_1_0_or_later:
# # scheduler.step()
# for k in scheduler:
# scheduler[k].step()
# End of training
batch_time = time.time() - end
end = time.time()
meters.update(time=batch_time, data=data_time)
eta_seconds = meters.time.global_avg * (max_iter - iteration)
eta_string = str(datetime.timedelta(seconds=int(eta_seconds)))
sample_layer = used_feature_layers[
0] # sample any one of used feature layer
if USE_DIS_GLOBAL:
if seperate_dis:
sample_optimizer = optimizer["dis_%s" % sample_layer]
else:
sample_optimizer = optimizer["dis_P7"]
if USE_DIS_CENTER_AWARE:
if seperate_dis:
sample_optimizer = optimizer["dis_%s_CA" % sample_layer]
else:
sample_optimizer = optimizer["dis_P7_CA"]
if iteration % 20 == 0 or iteration == max_iter:
logger.info(
meters.delimiter.join([
"eta: {eta}",
"iter: {iter}",
"{meters}",
"lr_backbone: {lr_backbone:.6f}",
"lr_fcos: {lr_fcos:.6f}",
"lr_dis: {lr_dis:.6f}",
"max mem: {memory:.0f}",
]).format(
eta=eta_string,
iter=iteration,
meters=str(meters),
lr_backbone=optimizer["backbone"].param_groups[0]["lr"],
lr_fcos=optimizer["fcos"].param_groups[0]["lr"],
lr_dis=sample_optimizer.param_groups[0]["lr"],
memory=torch.cuda.max_memory_allocated() / 1024.0 / 1024.0,
))
if iteration % checkpoint_period == 0:
checkpointer.save("model_final", **arguments)
results = run_test(cfg, model, distributed)
for ap_key in results[0][0].results['bbox'].keys():
writer.add_scalar('mAP_val/{}'.format(ap_key),
results[0][0].results['bbox'][ap_key],
iteration)
map50 = results[0][0].results['bbox']['AP50']
if map50 > best_map50:
checkpointer.save("model_best", **arguments)
best_map50 = map50
for k in model:
model[k].train()
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 / it)".format(
total_time_str, total_training_time / (max_iter)))
def do_train_base(model, data_loader, optimizer, scheduler, checkpointer,
device, checkpoint_period, arguments, cfg, run_test,
distributed, writer):
# Start training
logger = logging.getLogger("fcos_core.trainer")
logger.info("Start training")
# model.train()
for k in model:
model[k].train()
meters = MetricLogger(delimiter=" ")
max_iter = len(data_loader)
start_iter = arguments["iteration"]
start_training_time = time.time()
end = time.time()
pytorch_1_1_0_or_later = is_pytorch_1_1_0_or_later()
best_map50 = 0.0
for iteration, (images_s, targets_s,
_) in enumerate(data_loader, start_iter):
data_time = time.time() - end
iteration = iteration + 1
arguments["iteration"] = iteration
# in pytorch >= 1.1.0, scheduler.step() should be run after optimizer.step()
if not pytorch_1_1_0_or_later:
# scheduler.step()
for k in scheduler:
scheduler[k].step()
images_s = images_s.to(device)
targets_s = [target_s.to(device) for target_s in targets_s]
# optimizer.zero_grad()
for k in optimizer:
optimizer[k].zero_grad()
##########################################################################
#################### (1): train G #####################
##########################################################################
loss_dict, features_s, score_maps_s = foward_detector(
model, images_s, targets=targets_s, return_maps=True)
# rename loss to indicate domain
# loss_dict = {k + "_gs": loss_dict[k] for k in loss_dict}
loss_dict = {k + "_gs": loss_dict[k] for k in loss_dict if 'loss' in k}
losses = sum(loss for loss in loss_dict.values())
# reduce losses over all GPUs for logging purposes
loss_dict_reduced = reduce_loss_dict(loss_dict)
losses_reduced = sum(loss for loss in loss_dict_reduced.values())
meters.update(loss_gs=losses_reduced, **loss_dict_reduced)
writer.add_scalar('Loss_FCOS/gs', losses, iteration)
writer.add_scalar('Loss_FCOS/cls_gs', loss_dict['loss_cls_gs'],
iteration)
writer.add_scalar('Loss_FCOS/reg_gs', loss_dict['loss_reg_gs'],
iteration)
writer.add_scalar('Loss_FCOS/centerness_gs',
loss_dict['loss_centerness_gs'], iteration)
losses.backward(retain_graph=True)
del loss_dict, losses
##########################################################################
##########################################################################
##########################################################################
# max_norm = 5
# for k in model:
# torch.nn.utils.clip_grad_norm_(model[k].parameters(), max_norm)
# optimizer.step()
for k in optimizer:
optimizer[k].step()
if pytorch_1_1_0_or_later:
# scheduler.step()
for k in scheduler:
scheduler[k].step()
# End of training
batch_time = time.time() - end
end = time.time()
meters.update(time=batch_time, data=data_time)
eta_seconds = meters.time.global_avg * (max_iter - iteration)
eta_string = str(datetime.timedelta(seconds=int(eta_seconds)))
if iteration % 20 == 0 or iteration == max_iter:
logger.info(
meters.delimiter.join([
"eta: {eta}",
"iter: {iter}",
"{meters}",
"lr_backbone: {lr_backbone:.6f}",
"lr_fcos: {lr_fcos:.6f}",
"max mem: {memory:.0f}",
]).format(
eta=eta_string,
iter=iteration,
meters=str(meters),
lr_backbone=optimizer["backbone"].param_groups[0]["lr"],
lr_fcos=optimizer["fcos"].param_groups[0]["lr"],
memory=torch.cuda.max_memory_allocated() / 1024.0 / 1024.0,
))
if iteration % checkpoint_period == 0:
checkpointer.save("model_final", **arguments)
results = run_test(cfg, model, distributed)
for ap_key in results[0][0].results['bbox'].keys():
writer.add_scalar('mAP_val/{}'.format(ap_key),
results[0][0].results['bbox'][ap_key],
iteration)
map50 = results[0][0].results['bbox']['AP50']
if map50 > best_map50:
checkpointer.save("model_best", **arguments)
best_map50 = map50
for k in model:
model[k].train()
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 / it)".format(
total_time_str, total_training_time / (max_iter)))