# Copyright (c) OpenMMLab. All rights reserved.
import argparse
import copy
import multiprocessing as mp
import os
import os.path as osp
import platform
import time
import warnings
import cv2
import mmcv
import torch
from mmcv import Config, DictAction
from mmcv.runner import get_dist_info, init_dist, set_random_seed
from mmcv.utils import get_git_hash
from mmaction import __version__
from mmaction.apis import init_random_seed, train_model
from mmaction.datasets import build_dataset
from mmaction.models import build_model
from mmaction.utils import collect_env, get_root_logger, register_module_hooks
def count_parameters(model):
return sum(p.numel() for p in model.parameters() if p.requires_grad)
def setup_multi_processes(cfg):
# set multi-process start method as `fork` to speed up the training
if platform.system() != 'Windows':
mp_start_method = cfg.get('mp_start_method', 'fork')
mp.set_start_method(mp_start_method)
# disable opencv multithreading to avoid system being overloaded
opencv_num_threads = cfg.get('opencv_num_threads', 0)
cv2.setNumThreads(opencv_num_threads)
# setup OMP threads
# This code is referred from https://github.com/pytorch/pytorch/blob/master/torch/distributed/run.py # noqa
if ('OMP_NUM_THREADS' not in os.environ and cfg.data.workers_per_gpu > 1):
omp_num_threads = 1
warnings.warn(
f'Setting OMP_NUM_THREADS environment variable for each process '
f'to be {omp_num_threads} in default, to avoid your system being '
f'overloaded, please further tune the variable for optimal '
f'performance in your application as needed.')
os.environ['OMP_NUM_THREADS'] = str(omp_num_threads)
# setup MKL threads
if 'MKL_NUM_THREADS' not in os.environ and cfg.data.workers_per_gpu > 1:
mkl_num_threads = 1
warnings.warn(
f'Setting MKL_NUM_THREADS environment variable for each process '
f'to be {mkl_num_threads} in default, to avoid your system being '
f'overloaded, please further tune the variable for optimal '
f'performance in your application as needed.')
os.environ['MKL_NUM_THREADS'] = str(mkl_num_threads)
def parse_args():
parser = argparse.ArgumentParser(description='Train a recognizer')
parser.add_argument('config', help='train config file path')
parser.add_argument('--work-dir', help='the dir to save logs and models')
parser.add_argument(
'--resume-from', help='the checkpoint file to resume from')
parser.add_argument(
'--validate',
action='store_true',
help='whether to evaluate the checkpoint during training')
parser.add_argument(
'--test-last',
action='store_true',
help='whether to test the checkpoint after training')
parser.add_argument(
'--test-best',
action='store_true',
help=('whether to test the best checkpoint (if applicable) after '
'training'))
group_gpus = parser.add_mutually_exclusive_group()
group_gpus.add_argument(
'--gpus',
type=int,
help='number of gpus to use '
'(only applicable to non-distributed training)')
group_gpus.add_argument(
'--gpu-ids',
type=int,
nargs='+',
help='ids of gpus to use '
'(only applicable to non-distributed training)')
parser.add_argument('--seed', type=int, default=None, help='random seed')
parser.add_argument(
'--deterministic',
action='store_true',
help='whether to set deterministic options for CUDNN backend.')
parser.add_argument(
'--cfg-options',
nargs='+',
action=DictAction,
default={},
help='override some settings in the used config, the key-value pair '
'in xxx=yyy format will be merged into config file. For example, '
"'--cfg-options model.backbone.depth=18 model.backbone.with_cp=True'")
parser.add_argument(
'--launcher',
choices=['none', 'pytorch', 'slurm', 'mpi'],
default='none',
help='job launcher')
parser.add_argument('--local_rank', type=int, default=0)
args = parser.parse_args()
if 'LOCAL_RANK' not in os.environ:
os.environ['LOCAL_RANK'] = str(args.local_rank)
return args
def main():
args = parse_args()
cfg = Config.fromfile(args.config)
cfg.merge_from_dict(args.cfg_options)
# set multi-process settings
setup_multi_processes(cfg)
# set cudnn_benchmark
if cfg.get('cudnn_benchmark', False):
torch.backends.cudnn.benchmark = True
# work_dir is determined in this priority:
# CLI > config file > default (base filename)
if args.work_dir is not None:
# update configs according to CLI args if args.work_dir is not None
cfg.work_dir = args.work_dir
elif cfg.get('work_dir', None) is None:
# use config filename as default work_dir if cfg.work_dir is None
cfg.work_dir = osp.join('./work_dirs',
osp.splitext(osp.basename(args.config))[0])
if args.resume_from is not None:
cfg.resume_from = args.resume_from
if args.gpu_ids is not None:
cfg.gpu_ids = args.gpu_ids
else:
cfg.gpu_ids = range(1) if args.gpus is None else range(args.gpus)
# init distributed env first, since logger depends on the dist info.
if args.launcher == 'none':
distributed = False
else:
distributed = True
init_dist(args.launcher, **cfg.dist_params)
_, world_size = get_dist_info()
cfg.gpu_ids = range(world_size)
# The flag is used to determine whether it is omnisource training
cfg.setdefault('omnisource', False)
# The flag is used to register module's hooks
cfg.setdefault('module_hooks', [])
# create work_dir
mmcv.mkdir_or_exist(osp.abspath(cfg.work_dir))
# dump config
cfg.dump(osp.join(cfg.work_dir, osp.basename(args.config)))
# init logger before other steps
timestamp = time.strftime('%Y%m%d_%H%M%S', time.localtime())
log_file = osp.join(cfg.work_dir, f'{timestamp}.log')
logger = get_root_logger(log_file=log_file, log_level=cfg.log_level)
# init the meta dict to record some important information such as
# environment info and seed, which will be logged
meta = dict()
# log env info
env_info_dict = collect_env()
env_info = '\n'.join([f'{k}: {v}' for k, v in env_info_dict.items()])
dash_line = '-' * 60 + '\n'
logger.info('Environment info:\n' + dash_line + env_info + '\n' +
dash_line)
meta['env_info'] = env_info
# log some basic info
logger.info(f'Distributed training: {distributed}')
logger.info(f'Config: {cfg.pretty_text}')
# set random seeds
seed = init_random_seed(args.seed)
logger.info(f'Set random seed to {seed}, '
f'deterministic: {args.deterministic}')
set_random_seed(seed, deterministic=args.deterministic)
cfg.seed = seed
meta['seed'] = seed
meta['config_name'] = osp.basename(args.config)
meta['work_dir'] = osp.basename(cfg.work_dir.rstrip('/\\'))
model = build_model(
cfg.model,
train_cfg=cfg.get('train_cfg'),
test_cfg=cfg.get('test_cfg'))
#print(model)
print("$$$$NUM", count_parameters(model))
if len(cfg.module_hooks) > 0:
register_module_hooks(model, cfg.module_hooks)
if cfg.omnisource:
# If omnisource flag is set, cfg.data.train should be a list
assert isinstance(cfg.data.train, list)
datasets = [build_dataset(dataset) for dataset in cfg.data.train]
else:
datasets = [build_dataset(cfg.data.train)]
if len(cfg.workflow) == 2:
# For simplicity, omnisource is not compatible with val workflow,
# we recommend you to use `--validate`
assert not cfg.omnisource
if args.validate:
warnings.warn('val workflow is duplicated with `--validate`, '
'it is recommended to use `--validate`. see '
'https://github.com/open-mmlab/mmaction2/pull/123')
val_dataset = copy.deepcopy(cfg.data.val)
datasets.append(build_dataset(val_dataset))
if cfg.checkpoint_config is not None:
# save mmaction version, config file content and class names in
# checkpoints as meta data
cfg.checkpoint_config.meta = dict(
mmaction_version=__version__ + get_git_hash(digits=7),
config=cfg.pretty_text)
test_option = dict(test_last=args.test_last, test_best=args.test_best)
train_model(
model,
datasets,
cfg,
distributed=distributed,
validate=args.validate,
test=test_option,
timestamp=timestamp,
meta=meta)
if __name__ == '__main__':
main()
Datasets
Models
