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from loguru import logger
import torch
import torch.backends.cudnn as cudnn
from yolox.core import Trainer, launch
from yolox.exp import get_exp
import argparse
import random
import warnings
def make_parser():
parser = argparse.ArgumentParser("YOLOX train parser")
parser.add_argument("-expn", "--experiment-name", type=str, default=None)
parser.add_argument("-n", "--name", type=str, default=None, help="model name")
# distributed
parser.add_argument(
"--dist-backend", default="nccl", type=str, help="distributed backend"
)
parser.add_argument(
"--dist-url",
default=None,
type=str,
help="url used to set up distributed training",
)
parser.add_argument("-b", "--batch-size", type=int, default=64, help="batch size")
parser.add_argument(
"-d", "--devices", default=None, type=int, help="device for training"
)
parser.add_argument(
"--local_rank", default=0, type=int, help="local rank for dist training"
)
parser.add_argument(
"-f",
"--exp_file",
default=None,
type=str,
help="plz input your expriment description file",
)
parser.add_argument(
"--resume", default=False, action="store_true", help="resume training"
)
parser.add_argument("-c", "--ckpt", default=None, type=str, help="checkpoint file")
parser.add_argument(
"-e",
"--start_epoch",
default=None,
type=int,
help="resume training start epoch",
)
parser.add_argument(
"--num_machines", default=1, type=int, help="num of node for training"
)
parser.add_argument(
"--machine_rank", default=0, type=int, help="node rank for multi-node training"
)
parser.add_argument(
"--fp16",
dest="fp16",
default=True,
action="store_true",
help="Adopting mix precision training.",
)
parser.add_argument(
"-o",
"--occupy",
dest="occupy",
default=False,
action="store_true",
help="occupy GPU memory first for training.",
)
parser.add_argument(
"opts",
help="Modify config options using the command-line",
default=None,
nargs=argparse.REMAINDER,
)
return parser
@logger.catch
def main(exp, args):
if exp.seed is not None:
random.seed(exp.seed)
torch.manual_seed(exp.seed)
cudnn.deterministic = True
warnings.warn(
"You have chosen to seed training. This will turn on the CUDNN deterministic setting, "
"which can slow down your training considerably! You may see unexpected behavior "
"when restarting from checkpoints."
)
# set environment variables for distributed training
cudnn.benchmark = True
trainer = Trainer(exp, args)
trainer.train()
if __name__ == "__main__":
args = make_parser().parse_args()
exp = get_exp(args.exp_file, args.name)
exp.merge(args.opts)
if not args.experiment_name:
args.experiment_name = exp.exp_name
num_gpu = torch.cuda.device_count() if args.devices is None else args.devices
assert num_gpu <= torch.cuda.device_count()
launch(
main,
num_gpu,
args.num_machines,
args.machine_rank,
backend=args.dist_backend,
dist_url=args.dist_url,
args=(exp, args),
)
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