def train_des(cfg):
"""
Train a video model for many epochs on train set and evaluate it on val set.
Args:
cfg (CfgNode): configs. Details can be found in
slowfast/config/defaults.py
"""
# Set random seed from configs.
np.random.seed(cfg.RNG_SEED)
torch.manual_seed(cfg.RNG_SEED)
# Setup logging format.
logging.setup_logging(cfg.OUTPUT_DIR)
# Print config.
logger.info("Train with config:")
logger.info(pprint.pformat(cfg))
# Build the video model and print model statistics.
model = build_clevrer_model(cfg)
# Construct the optimizer.
optimizer = AdamW(model.parameters(), lr=cfg.SOLVER.BASE_LR, eps=1e-8)
start_epoch = cu.load_train_checkpoint(cfg, model, optimizer)
# Create the video train and val loaders.
train_loader = build_dataloader(cfg, "train")
val_loader = build_dataloader(cfg, "val")
total_steps = len(train_loader) * cfg.SOLVER.MAX_EPOCH
# Create the learning rate scheduler.
scheduler = get_linear_schedule_with_warmup(
optimizer,
num_warmup_steps=0, # Default value in run_glue.py
num_training_steps=total_steps)
# Create meters.
train_meter = ClevrerTrainMeter(len(train_loader), cfg)
val_meter = ClevrerValMeter(len(val_loader), cfg)
# Perform the training loop.
logger.info("Start epoch: {}".format(start_epoch + 1))
for cur_epoch in range(start_epoch, cfg.SOLVER.MAX_EPOCH):
# Train for one epoch.
train_epoch(train_loader, model, optimizer, scheduler, train_meter,
cur_epoch, cfg)
is_checkp_epoch = cu.is_checkpoint_epoch(
cfg,
cur_epoch,
None,
)
is_eval_epoch = misc.is_eval_epoch(cfg, cur_epoch, None)
# Save a checkpoint.
if is_checkp_epoch:
cu.save_checkpoint(cfg.OUTPUT_DIR, model, optimizer, cur_epoch,
cfg)
# Evaluate the model on validation set.
if is_eval_epoch:
eval_epoch(val_loader, model, val_meter, cur_epoch, cfg)
def train(cfg):
"""
Train a video model for many epochs on train set and evaluate it on val set.
Args:
cfg (CfgNode): configs. Details can be found in
slowfast/config/defaults.py
"""
# Set up environment.
du.init_distributed_training(cfg)
# Set random seed from configs.
np.random.seed(cfg.RNG_SEED)
torch.manual_seed(cfg.RNG_SEED)
# Setup logging format.
logging.setup_logging(cfg.OUTPUT_DIR)
# Init multigrid.
multigrid = None
if cfg.MULTIGRID.LONG_CYCLE or cfg.MULTIGRID.SHORT_CYCLE:
multigrid = MultigridSchedule()
cfg = multigrid.init_multigrid(cfg)
if cfg.MULTIGRID.LONG_CYCLE:
cfg, _ = multigrid.update_long_cycle(cfg, cur_epoch=0)
# Print config.
logger.info("Train with config:")
logger.info(pprint.pformat(cfg))
# Build the video model and print model statistics.
model = build_model(cfg)
if du.is_master_proc() and cfg.LOG_MODEL_INFO:
misc.log_model_info(model, cfg, use_train_input=True)
# Construct the optimizer.
optimizer = optim.construct_optimizer(model, cfg)
# Load a checkpoint to resume training if applicable.
start_epoch = cu.load_train_checkpoint(cfg, model, optimizer)
# Create the video train and val loaders.
train_loader = loader.construct_loader(cfg, "train")
val_loader = loader.construct_loader(cfg, "val")
precise_bn_loader = (loader.construct_loader(
cfg, "train", is_precise_bn=True)
if cfg.BN.USE_PRECISE_STATS else None)
# Create meters.
if cfg.DETECTION.ENABLE:
train_meter = AVAMeter(len(train_loader), cfg, mode="train")
val_meter = AVAMeter(len(val_loader), cfg, mode="val")
else:
train_meter = TrainMeter(len(train_loader), cfg)
val_meter = ValMeter(len(val_loader), cfg)
# set up writer for logging to Tensorboard format.
if cfg.TENSORBOARD.ENABLE and du.is_master_proc(
cfg.NUM_GPUS * cfg.NUM_SHARDS):
writer = tb.TensorboardWriter(cfg)
else:
writer = None
# Perform the training loop.
logger.info("Start epoch: {}".format(start_epoch + 1))
for cur_epoch in range(start_epoch, cfg.SOLVER.MAX_EPOCH):
if cfg.MULTIGRID.LONG_CYCLE:
cfg, changed = multigrid.update_long_cycle(cfg, cur_epoch)
if changed:
(
model,
optimizer,
train_loader,
val_loader,
precise_bn_loader,
train_meter,
val_meter,
) = build_trainer(cfg)
# Load checkpoint.
if cu.has_checkpoint(cfg.OUTPUT_DIR):
last_checkpoint = cu.get_last_checkpoint(cfg.OUTPUT_DIR)
assert "{:05d}.pyth".format(cur_epoch) in last_checkpoint
else:
last_checkpoint = cfg.TRAIN.CHECKPOINT_FILE_PATH
logger.info("Load from {}".format(last_checkpoint))
cu.load_checkpoint(last_checkpoint, model, cfg.NUM_GPUS > 1,
optimizer)
# Shuffle the dataset.
loader.shuffle_dataset(train_loader, cur_epoch)
# Train for one epoch.
train_epoch(train_loader, model, optimizer, train_meter, cur_epoch,
cfg, writer)
is_checkp_epoch = (cu.is_checkpoint_epoch(
cfg,
cur_epoch,
None if multigrid is None else multigrid.schedule,
))
is_eval_epoch = misc.is_eval_epoch(
cfg, cur_epoch, None if multigrid is None else multigrid.schedule)
# Compute precise BN stats.
if ((is_checkp_epoch or is_eval_epoch) and cfg.BN.USE_PRECISE_STATS
and len(get_bn_modules(model)) > 0):
calculate_and_update_precise_bn(
precise_bn_loader,
model,
min(cfg.BN.NUM_BATCHES_PRECISE, len(precise_bn_loader)),
cfg.NUM_GPUS > 0,
)
_ = misc.aggregate_sub_bn_stats(model)
# Save a checkpoint.
if is_checkp_epoch:
cu.save_checkpoint(cfg.OUTPUT_DIR, model, optimizer, cur_epoch,
cfg)
# Evaluate the model on validation set.
if is_eval_epoch:
eval_epoch(val_loader, model, val_meter, cur_epoch, cfg, writer)
if writer is not None:
writer.close()
def train(cfg):
"""
Train a video model for many epochs on train set and evaluate it on val set.
Args:
cfg (CfgNode): configs. Details can be found in
slowfast/config/defaults.py
"""
# Set random seed from configs.
np.random.seed(cfg.RNG_SEED)
torch.manual_seed(cfg.RNG_SEED)
# Setup logging format.
logging.setup_logging()
# Print config.
logger.info("Train with config:")
logger.info(pprint.pformat(cfg))
# Build the video model and print model statistics.
model = model_builder.build_model(cfg)
if du.is_master_proc():
misc.log_model_info(model)
# Construct the optimizer.
optimizer = optim.construct_optimizer(model, cfg)
# Load a checkpoint to resume training if applicable.
if cfg.TRAIN.AUTO_RESUME and cu.has_checkpoint(cfg.OUTPUT_DIR):
logger.info("Load from last checkpoint.")
last_checkpoint = cu.get_last_checkpoint(cfg.OUTPUT_DIR)
checkpoint_epoch = cu.load_checkpoint(last_checkpoint, model,
cfg.NUM_GPUS > 1, optimizer)
start_epoch = checkpoint_epoch + 1
elif cfg.TRAIN.CHECKPOINT_FILE_PATH != "":
logger.info("Load from given checkpoint file.")
checkpoint_epoch = cu.load_checkpoint(
cfg.TRAIN.CHECKPOINT_FILE_PATH,
model,
cfg.NUM_GPUS > 1,
optimizer,
inflation=cfg.TRAIN.CHECKPOINT_INFLATE,
convert_from_caffe2=cfg.TRAIN.CHECKPOINT_TYPE == "caffe2",
)
start_epoch = checkpoint_epoch + 1
else:
start_epoch = 0
# Create the video train and val loaders.
train_loader = loader.construct_loader(cfg, "train")
val_loader = loader.construct_loader(cfg, "val")
# Create meters.
if cfg.DETECTION.ENABLE:
train_meter = AVAMeter(len(train_loader), cfg, mode="train")
val_meter = AVAMeter(len(val_loader), cfg, mode="val")
else:
train_meter = TrainMeter(len(train_loader), cfg)
val_meter = ValMeter(len(val_loader), cfg)
# Perform the training loop.
logger.info("Start epoch: {}".format(start_epoch + 1))
for cur_epoch in range(start_epoch, cfg.SOLVER.MAX_EPOCH):
# Shuffle the dataset.
loader.shuffle_dataset(train_loader, cur_epoch)
# Train for one epoch.
train_epoch(train_loader, model, optimizer, train_meter, cur_epoch,
cfg)
# Compute precise BN stats.
if cfg.BN.USE_PRECISE_STATS and len(get_bn_modules(model)) > 0:
calculate_and_update_precise_bn(train_loader, model,
cfg.BN.NUM_BATCHES_PRECISE)
# Save a checkpoint.
if cu.is_checkpoint_epoch(cur_epoch, cfg.TRAIN.CHECKPOINT_PERIOD):
cu.save_checkpoint(cfg.OUTPUT_DIR, model, optimizer, cur_epoch,
cfg)
# Evaluate the model on validation set.
if misc.is_eval_epoch(cfg, cur_epoch):
eval_epoch(val_loader, model, val_meter, cur_epoch, cfg)
def train(cfg):
"""
Train a video model for many epochs on train set and evaluate it on val set.
Args:
cfg (CfgNode): configs. Details can be found in
slowfast/config/defaults.py
"""
# Set random seed from configs.
np.random.seed(cfg.RNG_SEED)
torch.manual_seed(cfg.RNG_SEED)
# Setup logging format.
logging.setup_logging(cfg)
# Print config.
logger.info("Train with config:")
logger.info(pprint.pformat(cfg))
if du.get_rank()==0 and du.is_master_proc(num_gpus=cfg.NUM_GPUS):
writer = SummaryWriter(log_dir=cfg.OUTPUT_DIR)
else:
writer = None
if du.get_rank()==0 and du.is_master_proc(num_gpus=cfg.NUM_GPUS) and not cfg.DEBUG:
tags = []
if 'TAGS' in cfg and cfg.TAGS !=[]:
tags=list(cfg.TAGS)
neptune.set_project('Serre-Lab/motion')
######################
overrides = sys.argv[1:]
overrides_dict = {}
for i in range(len(overrides)//2):
overrides_dict[overrides[2*i]] = overrides[2*i+1]
overrides_dict['dir'] = cfg.OUTPUT_DIR
######################
if 'NEP_ID' in cfg and cfg.NEP_ID != "":
session = Session()
project = session.get_project(project_qualified_name='Serre-Lab/motion')
nep_experiment = project.get_experiments(id=cfg.NEP_ID)[0]
else:
nep_experiment = neptune.create_experiment (name=cfg.NAME,
params=overrides_dict,
tags=tags)
else:
nep_experiment=None
# Build the video model and print model statistics.
model = build_model(cfg)
if du.is_master_proc(num_gpus=cfg.NUM_GPUS):
misc.log_model_info(model, cfg, is_train=True)
# Construct the optimizer.
optimizer = optim.construct_optimizer(model, cfg)
# Load a checkpoint to resume training if applicable.
if cfg.TRAIN.AUTO_RESUME and cu.has_checkpoint(cfg.OUTPUT_DIR):
logger.info("Load from last checkpoint.")
last_checkpoint = cu.get_last_checkpoint(cfg.OUTPUT_DIR)
checkpoint_epoch = cu.load_checkpoint(
last_checkpoint, model, cfg.NUM_GPUS > 1, optimizer
)
start_epoch = checkpoint_epoch + 1
elif cfg.TRAIN.CHECKPOINT_FILE_PATH != "":
logger.info("Load from given checkpoint file.")
checkpoint_epoch = cu.load_checkpoint(
cfg.TRAIN.CHECKPOINT_FILE_PATH,
model,
cfg.NUM_GPUS > 1,
optimizer,
inflation=cfg.TRAIN.CHECKPOINT_INFLATE,
convert_from_caffe2=cfg.TRAIN.CHECKPOINT_TYPE == "caffe2",
)
start_epoch = checkpoint_epoch + 1
else:
start_epoch = 0
# Create the video train and val loaders.
train_loader = loader.construct_loader(cfg, "train")
val_loader = loader.construct_loader(cfg, "val")
# Create meters.
if cfg.DETECTION.ENABLE:
train_meter = AVAMeter(len(train_loader), cfg, mode="train")
val_meter = AVAMeter(len(val_loader), cfg, mode="val")
else:
train_meter = TrainMeter(len(train_loader), cfg)
val_meter = ValMeter(len(val_loader), cfg)
# Perform the training loop.
logger.info("Start epoch: {}".format(start_epoch + 1))
for cur_epoch in range(start_epoch, cfg.SOLVER.MAX_EPOCH):
# Shuffle the dataset.
loader.shuffle_dataset(train_loader, cur_epoch)
# Train for one epoch.
train_epoch(train_loader, model, optimizer, train_meter, cur_epoch, writer, nep_experiment, cfg)
# Compute precise BN stats.
# if cfg.BN.USE_PRECISE_STATS and len(get_bn_modules(model)) > 0:
# calculate_and_update_precise_bn(
# train_loader, model, cfg.BN.NUM_BATCHES_PRECISE
# )
# Save a checkpoint.
if cu.is_checkpoint_epoch(cur_epoch, cfg.TRAIN.CHECKPOINT_PERIOD):
cu.save_checkpoint(cfg.OUTPUT_DIR, model, optimizer, cur_epoch, cfg)
# Evaluate the model on validation set.
if misc.is_eval_epoch(cfg, cur_epoch):
eval_epoch(val_loader, model, val_meter, cur_epoch, nep_experiment, cfg)
if du.get_rank()==0 and du.is_master_proc(num_gpus=cfg.NUM_GPUS) and not cfg.DEBUG:
nep_experiment.log_metric('epoch', cur_epoch)
def train_des(cfg):
"""
Train a video model for many epochs on train set and evaluate it on val set.
Args:
cfg (CfgNode): configs. Details can be found in
slowfast/config/defaults.py
"""
# Set random seed from configs.
np.random.seed(cfg.RNG_SEED)
torch.manual_seed(cfg.RNG_SEED)
# Setup logging format.
logging.setup_logging(cfg.OUTPUT_DIR)
# Print config.
logger.info("Train with config:")
logger.info(pprint.pformat(cfg))
# Build the video model and print model statistics.
model = build_clevrer_model(cfg)
# Construct the optimizer.
optimizer = optim.construct_optimizer(model, cfg)
# Load a checkpoint to resume training if applicable.
start_epoch = cu.load_train_checkpoint(cfg, model, optimizer)
# Create the video train and val loaders.
if cfg.TRAIN.DATASET != 'Clevrertext_des':
print(
"This train script does not support your dataset: -{}-. Only Clevrertext_des"
.format(cfg.TRAIN.DATASET))
exit()
# Create the video train and val loaders.
train_loader = build_dataloader(cfg, "train")
val_loader = build_dataloader(cfg, "val")
# Create meters.
train_meter = ClevrerTrainMeter(len(train_loader), cfg)
val_meter = ClevrerValMeter(len(val_loader), cfg)
# Perform the training loop.
logger.info("Start epoch: {}".format(start_epoch + 1))
for cur_epoch in range(start_epoch, cfg.SOLVER.MAX_EPOCH):
# Shuffle the dataset.
#loader.shuffle_dataset(train_loader, cur_epoch)
# Train for one epoch.
train_epoch(train_loader, model, optimizer, train_meter, cur_epoch,
cfg)
is_checkp_epoch = cu.is_checkpoint_epoch(
cfg,
cur_epoch,
None,
)
is_eval_epoch = misc.is_eval_epoch(cfg, cur_epoch, None)
# Save a checkpoint.
if is_checkp_epoch:
cu.save_checkpoint(cfg.OUTPUT_DIR, model, optimizer, cur_epoch,
cfg)
# Evaluate the model on validation set.
if is_eval_epoch:
eval_epoch(val_loader, model, val_meter, cur_epoch, cfg)
def train_epoch(train_loader,
model,
optimizer,
train_meter,
cur_epoch,
cfg,
writer=None):
"""
Perform the video training for one epoch.
Args:
train_loader (loader): video training loader.
model (model): the video model to train.
optimizer (optim): the optimizer to perform optimization on the model's
parameters.
train_meter (TrainMeter): training meters to log the training performance.
cur_epoch (int): current epoch of training.
cfg (CfgNode): configs. Details can be found in
slowfast/config/defaults.py
writer (TensorboardWriter, optional): TensorboardWriter object
to writer Tensorboard log.
"""
# Enable train mode.
model.train()
train_meter.iter_tic()
data_size = len(train_loader)
for cur_iter, (inputs, labels, _, meta) in enumerate(train_loader):
# Transfer the data to the current GPU device.
if cfg.NUM_GPUS:
if isinstance(inputs, (list, )):
for i in range(len(inputs)):
inputs[i] = inputs[i].cuda(non_blocking=True)
else:
inputs = inputs.cuda(non_blocking=True)
labels = labels.cuda()
for key, val in meta.items():
if isinstance(val, (list, )):
for i in range(len(val)):
val[i] = val[i].cuda(non_blocking=True)
else:
meta[key] = val.cuda(non_blocking=True)
# Update the learning rate.
lr = optim.get_epoch_lr(cur_epoch + float(cur_iter) / data_size, cfg)
optim.set_lr(optimizer, lr)
train_meter.data_toc()
# _________________________ save model test __________________________________________
if cur_iter % 100 == 1:
cu.save_checkpoint(cfg.OUTPUT_DIR, model, optimizer, cur_iter,
cfg) # cur_epoch
print("----------------------- save done ")
# exit(0)
# _________________________________________________________________________________________
if cfg.DETECTION.ENABLE:
# inputs[4,3,8,224,224], preds[32,2048,7,7]
# change {1,3,8,224,224] -> [8,3,224,224]
##################################################################################
inputs0 = inputs[0].squeeze(0).permute(1, 0, 2, 3)
inputs1 = inputs[1].squeeze(0).permute(1, 0, 2, 3)
meta["boxes"] = meta["boxes"].unsqueeze(0).unsqueeze(0)
inputs = [inputs0, inputs1]
preds = model(inputs, meta["boxes"])
# #################################################################################################################################
# import os
# weights = 'checkpoints/checkpoint_epoch_00007.pyth'
# os.environ['CUDA_VISIBLE_DEVICES'] = '0'
# device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
# chkpt = torch.load(weights, map_location=device)
# try:
# model_dict = model.module.state_dict()
# except AttributeError:
# model_dict = model.state_dict() # 读取原始状态及参数， ## 多GPU训练，导致训练存储的模型时key会加上model
# # 将pretrained_dict里不属于model_dict的键剔除掉
# chkpt = {k: v for k, v in chkpt.items() if k in model_dict}
# print("load pretrain model")
# model_dict.update(chkpt)
# model.load_state_dict(model_dict)
# model.to(device)
# # inputs = [inputs.to(device)]
# model.eval()
# input_tensor = (inputs, meta["boxes"].to(device))
# traced_script_module = torch.jit.trace(model, input_tensor)
# traced_script_module.save("weights/sf_pytorch.pt")
# print("************************* out put save **********************************")
# exit(0)
##############################################################################################
else:
preds = model(inputs)
# Explicitly declare reduction to mean.
loss_fun = losses.get_loss_func(cfg.MODEL.LOSS_FUNC)(reduction="mean")
# Compute the loss.
loss = loss_fun(preds, labels)
# check Nan Loss.
misc.check_nan_losses(loss)
# Perform the backward pass.
optimizer.zero_grad()
loss.backward()
# Update the parameters.
optimizer.step()
if cfg.DETECTION.ENABLE:
if cfg.NUM_GPUS > 1:
loss = du.all_reduce([loss])[0]
loss = loss.item()
# Update and log stats.
train_meter.update_stats(None, None, None, loss, lr)
# write to tensorboard format if available.
if writer is not None:
writer.add_scalars(
{
"Train/loss": loss,
"Train/lr": lr
},
global_step=data_size * cur_epoch + cur_iter,
)
else:
top1_err, top5_err = None, None
if cfg.DATA.MULTI_LABEL:
# Gather all the predictions across all the devices.
if cfg.NUM_GPUS > 1:
[loss] = du.all_reduce([loss])
loss = loss.item()
else:
# Compute the errors.
num_topks_correct = metrics.topks_correct(
preds, labels, (1, 5))
top1_err, top5_err = [(1.0 - x / preds.size(0)) * 100.0
for x in num_topks_correct]
# Gather all the predictions across all the devices.
if cfg.NUM_GPUS > 1:
loss, top1_err, top5_err = du.all_reduce(
[loss, top1_err, top5_err])
# Copy the stats from GPU to CPU (sync point).
loss, top1_err, top5_err = (
loss.item(),
top1_err.item(),
top5_err.item(),
)
# Update and log stats.
train_meter.update_stats(
top1_err,
top5_err,
loss,
lr,
inputs[0].size(0) * max(
cfg.NUM_GPUS, 1
), # If running on CPU (cfg.NUM_GPUS == 1), use 1 to represent 1 CPU.
)
# write to tensorboard format if available.
if writer is not None:
writer.add_scalars(
{
"Train/loss": loss,
"Train/lr": lr,
"Train/Top1_err": top1_err,
"Train/Top5_err": top5_err,
},
global_step=data_size * cur_epoch + cur_iter,
)
train_meter.iter_toc() # measure allreduce for this meter
train_meter.log_iter_stats(cur_epoch, cur_iter)
train_meter.iter_tic()
# Log epoch stats.
train_meter.log_epoch_stats(cur_epoch)
train_meter.reset()
def train(cfg):
"""
Train a video model for many epochs on train set and evaluate it on val set.
Args:
cfg (CfgNode): configs. Details can be found in
slowfast/config/defaults.py
"""
# Set random seed from configs.
np.random.seed(cfg.RNG_SEED)
torch.manual_seed(cfg.RNG_SEED)
# Setup logging format.
logging.setup_logging()
if du.is_master_proc():
if cfg.ENABLE_WANDB:
wandb.login()
wandb.init(project='bbox', entity='slowfast')
# Print config.
# logger.info("Train with config:")
# logger.info(pprint.pformat(cfg))
# Build the video model and print model statistics.
model = build_model(cfg)
if cfg.EPICKITCHENS.USE_BBOX and not cu.has_checkpoint(cfg.OUTPUT_DIR):
slow_fast_model = SlowFast(cfg)
if cfg.EPICKITCHENS.USE_BBOX and cfg.EPICKITCHENS.LOAD_SLOWFAST_PRETRAIN:
if cfg.EPICKITCHENS.SLOWFAST_PRETRAIN_CHECKPOINT_FILE_PATH != "":
_ = cu.load_checkpoint(
cfg.EPICKITCHENS.SLOWFAST_PRETRAIN_CHECKPOINT_FILE_PATH,
slow_fast_model,
False,
optimizer=None,
inflation=cfg.TRAIN.CHECKPOINT_INFLATE,
convert_from_caffe2=False,
)
# cfg.TRAIN.CHECKPOINT_TYPE == "caffe2"
logger.info("Load from slowfast.")
if cfg.NUM_GPUS > 1:
model.module.load_weight_slowfast(slow_fast_model)
else:
model.load_weight_slowfast(slow_fast_model)
# if du.is_master_proc():
# misc.log_model_info(model, cfg, is_train=True)
if cfg.BN.FREEZE:
model.freeze_fn('bn_parameters')
if cfg.EPICKITCHENS.USE_BBOX and cfg.EPICKITCHENS.FREEZE_BACKBONE:
model.freeze_fn('slowfast_bbox')
# Construct the optimizer.
optimizer = optim.construct_optimizer(model, cfg)
# Load a checkpoint to resume training if applicable.
if cfg.TRAIN.AUTO_RESUME and cu.has_checkpoint(cfg.OUTPUT_DIR):
logger.info("Load from last checkpoint.")
last_checkpoint = cu.get_last_checkpoint(cfg.OUTPUT_DIR)
checkpoint_epoch = cu.load_checkpoint(last_checkpoint, model,
cfg.NUM_GPUS > 1, optimizer)
start_epoch = checkpoint_epoch + 1
elif cfg.TRAIN.CHECKPOINT_FILE_PATH != "" and not cfg.TRAIN.FINETUNE:
logger.info("Load from given checkpoint file.")
checkpoint_epoch = cu.load_checkpoint(
cfg.TRAIN.CHECKPOINT_FILE_PATH,
model,
cfg.NUM_GPUS > 1,
optimizer,
inflation=cfg.TRAIN.CHECKPOINT_INFLATE,
convert_from_caffe2=cfg.TRAIN.CHECKPOINT_TYPE == "caffe2",
)
start_epoch = checkpoint_epoch + 1
elif cfg.TRAIN.CHECKPOINT_FILE_PATH != "" and cfg.TRAIN.FINETUNE:
logger.info("Load from given checkpoint file. Finetuning.")
_ = cu.load_checkpoint(
cfg.TRAIN.CHECKPOINT_FILE_PATH,
model,
cfg.NUM_GPUS > 1,
None,
inflation=cfg.TRAIN.CHECKPOINT_INFLATE,
convert_from_caffe2=cfg.TRAIN.CHECKPOINT_TYPE == "caffe2",
)
start_epoch = 0
else:
start_epoch = 0
# Create the video train and val loaders.
if cfg.TRAIN.DATASET != 'epickitchens' or not cfg.EPICKITCHENS.TRAIN_PLUS_VAL:
train_loader = loader.construct_loader(cfg, "train")
val_loader = loader.construct_loader(cfg, "val")
logger.info("Train loader size: {}".format(len(train_loader)))
logger.info("Val loader size: {}".format(len(val_loader)))
else:
train_loader = loader.construct_loader(cfg, "train+val")
val_loader = loader.construct_loader(cfg, "val")
# Create meters.
if cfg.DETECTION.ENABLE:
train_meter = AVAMeter(len(train_loader), cfg, mode="train")
val_meter = AVAMeter(len(val_loader), cfg, mode="val")
else:
if cfg.TRAIN.DATASET == 'epickitchens':
train_meter = EPICTrainMeterSimple(len(train_loader), cfg)
val_meter = EPICValMeterSimple(len(val_loader), cfg)
else:
train_meter = TrainMeter(len(train_loader), cfg)
val_meter = ValMeter(len(val_loader), cfg)
# Perform the training loop.
logger.info("Start epoch: {}".format(start_epoch + 1))
cnt = 0
# eval_epoch(val_loader, model, val_meter, 0, cfg, cnt)
# test_from_train(model, cfg, cnt=cnt)
for cur_epoch in range(start_epoch, cfg.SOLVER.MAX_EPOCH):
# Shuffle the dataset.
loader.shuffle_dataset(train_loader, cur_epoch)
# Train for one epoch.
cnt = train_epoch(train_loader, model, optimizer, train_meter,
cur_epoch, cfg, cnt)
# Compute precise BN stats.
if cfg.BN.USE_PRECISE_STATS and len(get_bn_modules(model)) > 0:
calculate_and_update_precise_bn(train_loader, model,
cfg.BN.NUM_BATCHES_PRECISE)
# Save a checkpoint.
if cu.is_checkpoint_epoch(cur_epoch, cfg.TRAIN.CHECKPOINT_PERIOD):
cu.save_checkpoint(cfg.OUTPUT_DIR, model, optimizer, cur_epoch,
cfg)
# Evaluate the model on validation set.
if misc.is_eval_epoch(cfg, cur_epoch):
is_best_epoch = eval_epoch(val_loader, model, val_meter, cur_epoch,
cfg, cnt)
if is_best_epoch:
cu.save_checkpoint(cfg.OUTPUT_DIR,
model,
optimizer,
cur_epoch,
cfg,
is_best_epoch=is_best_epoch)
def train(cfg):
"""
Train an audio model for many epochs on train set and evaluate it on val set.
Args:
cfg (CfgNode): configs. Details can be found in
slowfast/config/defaults.py
"""
# Set up environment.
du.init_distributed_training(cfg)
# Set random seed from configs.
np.random.seed(cfg.RNG_SEED)
torch.manual_seed(cfg.RNG_SEED)
# Setup logging format.
logging.setup_logging(cfg.OUTPUT_DIR)
# Print config.
logger.info("Train with config:")
logger.info(pprint.pformat(cfg))
# Build the audio model and print model statistics.
model = build_model(cfg)
if du.is_master_proc() and cfg.LOG_MODEL_INFO:
misc.log_model_info(model, cfg)
if cfg.BN.FREEZE:
model.module.freeze_fn(
'bn_parameters') if cfg.NUM_GPUS > 1 else model.freeze_fn(
'bn_parameters')
# Construct the optimizer.
optimizer = optim.construct_optimizer(model, cfg)
# Load a checkpoint to resume training if applicable.
start_epoch = cu.load_train_checkpoint(cfg, model, optimizer)
# Create the audio train and val loaders.
if cfg.TRAIN.DATASET != 'epickitchens' or not cfg.EPICKITCHENS.TRAIN_PLUS_VAL:
train_loader = loader.construct_loader(cfg, "train")
val_loader = loader.construct_loader(cfg, "val")
precise_bn_loader = (loader.construct_loader(cfg, "train")
if cfg.BN.USE_PRECISE_STATS else None)
else:
train_loader = loader.construct_loader(cfg, "train+val")
val_loader = loader.construct_loader(cfg, "val")
precise_bn_loader = (loader.construct_loader(cfg, "train+val")
if cfg.BN.USE_PRECISE_STATS else None)
# Create meters.
if cfg.TRAIN.DATASET == 'epickitchens':
train_meter = EPICTrainMeter(len(train_loader), cfg)
val_meter = EPICValMeter(len(val_loader), cfg)
else:
train_meter = TrainMeter(len(train_loader), cfg)
val_meter = ValMeter(len(val_loader), cfg)
# set up writer for logging to Tensorboard format.
if cfg.TENSORBOARD.ENABLE and du.is_master_proc(
cfg.NUM_GPUS * cfg.NUM_SHARDS):
writer = tb.TensorboardWriter(cfg)
else:
writer = None
if cfg.WANDB.ENABLE and du.is_master_proc(cfg.NUM_GPUS * cfg.NUM_SHARDS):
wandb_log = True
if cfg.TRAIN.AUTO_RESUME and cfg.WANDB.RUN_ID != "":
wandb.init(project='slowfast',
config=cfg,
sync_tensorboard=True,
resume=cfg.WANDB.RUN_ID)
else:
wandb.init(project='slowfast', config=cfg, sync_tensorboard=True)
wandb.watch(model)
else:
wandb_log = False
# Perform the training loop.
logger.info("Start epoch: {}".format(start_epoch + 1))
for cur_epoch in range(start_epoch, cfg.SOLVER.MAX_EPOCH):
# Shuffle the dataset.
loader.shuffle_dataset(train_loader, cur_epoch)
# Train for one epoch.
train_epoch(train_loader, model, optimizer, train_meter, cur_epoch,
cfg, writer, wandb_log)
is_checkp_epoch = cu.is_checkpoint_epoch(
cfg,
cur_epoch,
)
is_eval_epoch = misc.is_eval_epoch(
cfg,
cur_epoch,
)
# Compute precise BN stats.
if ((is_checkp_epoch or is_eval_epoch) and cfg.BN.USE_PRECISE_STATS
and len(get_bn_modules(model)) > 0):
calculate_and_update_precise_bn(
precise_bn_loader,
model,
min(cfg.BN.NUM_BATCHES_PRECISE, len(precise_bn_loader)),
cfg.NUM_GPUS > 0,
)
_ = misc.aggregate_sub_bn_stats(model)
# Save a checkpoint.
if is_checkp_epoch:
cu.save_checkpoint(cfg.OUTPUT_DIR, model, optimizer, cur_epoch,
cfg)
# Evaluate the model on validation set.
if is_eval_epoch:
is_best_epoch, _ = eval_epoch(val_loader, model, val_meter,
cur_epoch, cfg, writer, wandb_log)
if is_best_epoch:
cu.save_checkpoint(cfg.OUTPUT_DIR,
model,
optimizer,
cur_epoch,
cfg,
is_best_epoch=is_best_epoch)
if writer is not None:
writer.close()
def train(cfg):
"""
Train a video model for many epochs on train set and evaluate it on val set.
Args:
cfg (CfgNode): configs. Details can be found in
slowfast/config/defaults.py
"""
# Set up environment.
du.init_distributed_training(cfg)
# Set random seed from configs.
np.random.seed(cfg.RNG_SEED)
torch.manual_seed(cfg.RNG_SEED)
# Setup logging format.
logging.setup_logging(cfg.OUTPUT_DIR)
# Init multigrid.
multigrid = None
if cfg.MULTIGRID.LONG_CYCLE or cfg.MULTIGRID.SHORT_CYCLE:
multigrid = MultigridSchedule()
cfg = multigrid.init_multigrid(cfg)
if cfg.MULTIGRID.LONG_CYCLE:
cfg, _ = multigrid.update_long_cycle(cfg, cur_epoch=0)
# Print config.
logger.info("Train with config:")
logger.info(pprint.pformat(cfg))
# Build the video model and print model statistics.
model = build_model(cfg)
if du.is_master_proc() and cfg.LOG_MODEL_INFO:
misc.log_model_info(model, cfg, use_train_input=True)
# Construct the optimizer.
optimizer = optim.construct_optimizer(model, cfg)
# Create a GradScaler for mixed precision training
scaler = torch.cuda.amp.GradScaler(enabled=cfg.TRAIN.MIXED_PRECISION)
# Load a checkpoint to resume training if applicable.
if cfg.TRAIN.AUTO_RESUME and cu.has_checkpoint(cfg.OUTPUT_DIR):
logger.info("Load from last checkpoint.")
last_checkpoint = cu.get_last_checkpoint(cfg.OUTPUT_DIR, task=cfg.TASK)
if last_checkpoint is not None:
checkpoint_epoch = cu.load_checkpoint(
last_checkpoint,
model,
cfg.NUM_GPUS > 1,
optimizer,
scaler if cfg.TRAIN.MIXED_PRECISION else None,
)
start_epoch = checkpoint_epoch + 1
elif "ssl_eval" in cfg.TASK:
last_checkpoint = cu.get_last_checkpoint(cfg.OUTPUT_DIR,
task="ssl")
checkpoint_epoch = cu.load_checkpoint(
last_checkpoint,
model,
cfg.NUM_GPUS > 1,
optimizer,
scaler if cfg.TRAIN.MIXED_PRECISION else None,
epoch_reset=True,
clear_name_pattern=cfg.TRAIN.CHECKPOINT_CLEAR_NAME_PATTERN,
)
start_epoch = checkpoint_epoch + 1
else:
start_epoch = 0
elif cfg.TRAIN.CHECKPOINT_FILE_PATH != "":
logger.info("Load from given checkpoint file.")
checkpoint_epoch = cu.load_checkpoint(
cfg.TRAIN.CHECKPOINT_FILE_PATH,
model,
cfg.NUM_GPUS > 1,
optimizer,
scaler if cfg.TRAIN.MIXED_PRECISION else None,
inflation=cfg.TRAIN.CHECKPOINT_INFLATE,
convert_from_caffe2=cfg.TRAIN.CHECKPOINT_TYPE == "caffe2",
epoch_reset=cfg.TRAIN.CHECKPOINT_EPOCH_RESET,
clear_name_pattern=cfg.TRAIN.CHECKPOINT_CLEAR_NAME_PATTERN,
)
start_epoch = checkpoint_epoch + 1
else:
start_epoch = 0
# Create the video train and val loaders.
train_loader = loader.construct_loader(cfg, "train")
val_loader = loader.construct_loader(cfg, "val")
precise_bn_loader = (loader.construct_loader(
cfg, "train", is_precise_bn=True)
if cfg.BN.USE_PRECISE_STATS else None)
# if (
# cfg.TASK == "ssl"
# and cfg.MODEL.MODEL_NAME == "ContrastiveModel"
# and cfg.CONTRASTIVE.KNN_ON
# ):
# if hasattr(model, "module"):
# model.module.init_knn_labels(train_loader)
# else:
# model.init_knn_labels(train_loader)
# Create meters.
if cfg.DETECTION.ENABLE:
train_meter = AVAMeter(len(train_loader), cfg, mode="train")
val_meter = AVAMeter(len(val_loader), cfg, mode="val")
else:
train_meter = TrainMeter(1e6, cfg)
val_meter = ValMeter(1e6, cfg)
# set up writer for logging to Tensorboard format.
if cfg.TENSORBOARD.ENABLE and du.is_master_proc(
cfg.NUM_GPUS * cfg.NUM_SHARDS):
writer = tb.TensorboardWriter(cfg)
else:
writer = None
# Perform the training loop.
logger.info("Start epoch: {}".format(start_epoch + 1))
epoch_timer = EpochTimer()
for cur_epoch in range(start_epoch, cfg.SOLVER.MAX_EPOCH):
if cur_epoch > 0 and cfg.DATA.LOADER_CHUNK_SIZE > 0:
num_chunks = math.ceil(cfg.DATA.LOADER_CHUNK_OVERALL_SIZE /
cfg.DATA.LOADER_CHUNK_SIZE)
skip_rows = (cur_epoch) % num_chunks * cfg.DATA.LOADER_CHUNK_SIZE
logger.info(
f"=================+++ num_chunks {num_chunks} skip_rows {skip_rows}"
)
cfg.DATA.SKIP_ROWS = skip_rows
logger.info(f"|===========| skip_rows {skip_rows}")
train_loader = loader.construct_loader(cfg, "train")
loader.shuffle_dataset(train_loader, cur_epoch)
if cfg.MULTIGRID.LONG_CYCLE:
cfg, changed = multigrid.update_long_cycle(cfg, cur_epoch)
if changed:
(
model,
optimizer,
train_loader,
val_loader,
precise_bn_loader,
train_meter,
val_meter,
) = build_trainer(cfg)
# Load checkpoint.
if cu.has_checkpoint(cfg.OUTPUT_DIR):
last_checkpoint = cu.get_last_checkpoint(cfg.OUTPUT_DIR,
task=cfg.TASK)
assert "{:05d}.pyth".format(cur_epoch) in last_checkpoint
else:
last_checkpoint = cfg.TRAIN.CHECKPOINT_FILE_PATH
logger.info("Load from {}".format(last_checkpoint))
cu.load_checkpoint(last_checkpoint, model, cfg.NUM_GPUS > 1,
optimizer)
# Shuffle the dataset.
loader.shuffle_dataset(train_loader, cur_epoch)
if hasattr(train_loader.dataset, "_set_epoch_num"):
train_loader.dataset._set_epoch_num(cur_epoch)
# Train for one epoch.
epoch_timer.epoch_tic()
train_epoch(
train_loader,
model,
optimizer,
scaler,
train_meter,
cur_epoch,
cfg,
writer,
)
epoch_timer.epoch_toc()
logger.info(
f"Epoch {cur_epoch} takes {epoch_timer.last_epoch_time():.2f}s. Epochs "
f"from {start_epoch} to {cur_epoch} take "
f"{epoch_timer.avg_epoch_time():.2f}s in average and "
f"{epoch_timer.median_epoch_time():.2f}s in median.")
logger.info(
f"For epoch {cur_epoch}, each iteraction takes "
f"{epoch_timer.last_epoch_time()/len(train_loader):.2f}s in average. "
f"From epoch {start_epoch} to {cur_epoch}, each iteraction takes "
f"{epoch_timer.avg_epoch_time()/len(train_loader):.2f}s in average."
)
is_checkp_epoch = (cu.is_checkpoint_epoch(
cfg,
cur_epoch,
None if multigrid is None else multigrid.schedule,
) or cur_epoch == cfg.SOLVER.MAX_EPOCH - 1)
is_eval_epoch = misc.is_eval_epoch(
cfg, cur_epoch, None if multigrid is None else multigrid.schedule)
# Compute precise BN stats.
if ((is_checkp_epoch or is_eval_epoch) and cfg.BN.USE_PRECISE_STATS
and len(get_bn_modules(model)) > 0):
calculate_and_update_precise_bn(
precise_bn_loader,
model,
min(cfg.BN.NUM_BATCHES_PRECISE, len(precise_bn_loader)),
cfg.NUM_GPUS > 0,
)
_ = misc.aggregate_sub_bn_stats(model)
# Save a checkpoint.
if is_checkp_epoch:
cu.save_checkpoint(
cfg.OUTPUT_DIR,
model,
optimizer,
cur_epoch,
cfg,
scaler if cfg.TRAIN.MIXED_PRECISION else None,
)
# Evaluate the model on validation set.
if is_eval_epoch:
eval_epoch(
val_loader,
model,
val_meter,
cur_epoch,
cfg,
train_loader,
writer,
)
if writer is not None:
writer.close()
result_string = "Top1 Acc: {:.2f} Top5 Acc: {:.2f} MEM: {:.2f}" "".format(
100 - val_meter.min_top1_err,
100 - val_meter.min_top5_err,
misc.gpu_mem_usage(),
)
logger.info("training done: {}".format(result_string))
return result_string
def train_des(cfg):
"""
Train a video model for many epochs on train set and evaluate it on val set.
Args:
cfg (CfgNode): configs. Details can be found in
slowfast/config/defaults.py
"""
# Set random seed from configs.
np.random.seed(cfg.RNG_SEED)
torch.manual_seed(cfg.RNG_SEED)
# Setup logging format.
logging.setup_logging(cfg.OUTPUT_DIR)
# Print config.
logger.info("Train with config:")
logger.info(pprint.pformat(cfg))
# Build the video model and print model statistics.
model = MONET_BERT(cfg)
if cfg.NUM_GPUS:
# Determine the GPU used by the current process
cur_device = torch.cuda.current_device()
# Transfer the model to the current GPU device
model = model.cuda(device=cur_device)
# Construct the optimizer.
# optimizer = AdamW(model.parameters(),
# lr = cfg.SOLVER.BASE_LR,
# eps = 1e-8
# )
optimizer = Lamb(model.parameters(),
lr=cfg.SOLVER.BASE_LR,
betas=(0.9, 0.999),
eps=1e-6,
weight_decay=cfg.SOLVER.WEIGHT_DECAY,
adam=False)
# optimizer = optim.Adam(model.parameters(), lr=cfg.SOLVER.BASE_LR)
start_epoch = cu.load_train_checkpoint(cfg, model, optimizer)
optimizer = Lamb(model.parameters(),
lr=cfg.SOLVER.BASE_LR,
betas=(0.9, 0.999),
eps=1e-6,
weight_decay=cfg.SOLVER.WEIGHT_DECAY,
adam=False)
# Create the video train and val loaders.
train_loader = build_dataloader(cfg, "train")
val_loader = build_dataloader(cfg, "val")
total_steps = len(train_loader) * cfg.SOLVER.MAX_EPOCH
# Create the learning rate scheduler.
scheduler = get_linear_schedule_with_warmup(
optimizer,
num_warmup_steps=4000, # Default value in run_glue.py
num_training_steps=total_steps)
# Create meters.
train_meter = ClevrerTrainMeter(len(train_loader), cfg)
val_meter = ClevrerValMeter(len(val_loader), cfg)
# Perform the training loop.
logger.info("Start epoch: {}".format(start_epoch + 1))
for cur_epoch in range(start_epoch, cfg.SOLVER.MAX_EPOCH):
# Train for one epoch.
train_epoch(train_loader, model, optimizer, scheduler, train_meter,
cur_epoch, cfg)
is_checkp_epoch = cu.is_checkpoint_epoch(
cfg,
cur_epoch,
None,
)
is_eval_epoch = misc.is_eval_epoch(cfg, cur_epoch, None)
# Save a checkpoint.
if is_checkp_epoch:
cu.save_checkpoint(cfg.OUTPUT_DIR, model, optimizer, cur_epoch,
cfg)
# Evaluate the model on validation set.
if is_eval_epoch:
eval_epoch(val_loader, model, val_meter, cur_epoch, cfg)
