def inference(model,
data_loader,
dataset_name,
device,
output_folder=None,
use_cached=False,
**kwargs):
dataset = data_loader.dataset
logger = logging.getLogger("DSSD.inference")
logger.info("Evaluating {} dataset({} images):".format(
dataset_name, len(dataset)))
predictions_path = os.path.join(output_folder, 'predictions.pth')
if use_cached and os.path.exists(predictions_path):
predictions = torch.load(predictions_path, map_location='cpu')
else:
predictions = compute_on_dataset(model, data_loader, device)
synchronize()
predictions = _accumulate_predictions_from_multiple_gpus(predictions)
if not is_main_process():
return
if output_folder:
torch.save(predictions, predictions_path)
return evaluate(dataset=dataset,
predictions=predictions,
output_dir=output_folder,
**kwargs)
def main():
parser = argparse.ArgumentParser(description='DSSD Evaluation on VOC and COCO dataset.')
parser.add_argument(
"--config-file",
default="",
metavar="FILE",
help="path to config file",
type=str,
)
parser.add_argument("--local_rank", type=int, default=0)
parser.add_argument(
"--ckpt",
help="The path to the checkpoint for test, default is the latest checkpoint.",
default=None,
type=str,
)
parser.add_argument("--output_dir", default="eval_results", type=str, help="The directory to store evaluation results.")
parser.add_argument(
"opts",
help="Modify config options using the command-line",
default=None,
nargs=argparse.REMAINDER,
)
args = parser.parse_args()
num_gpus = int(os.environ["WORLD_SIZE"]) if "WORLD_SIZE" in os.environ else 1
distributed = num_gpus > 1
if torch.cuda.is_available():
# This flag allows you to enable the inbuilt cudnn auto-tuner to
# find the best algorithm to use for your hardware.
torch.backends.cudnn.benchmark = True
if distributed:
torch.cuda.set_device(args.local_rank)
torch.distributed.init_process_group(backend="nccl", init_method="env://")
synchronize()
cfg.merge_from_file(args.config_file)
cfg.merge_from_list(args.opts)
cfg.freeze()
logger = setup_logger("DSSD", dist_util.get_rank(), cfg.OUTPUT_DIR)
logger.info("Using {} GPUs".format(num_gpus))
logger.info(args)
logger.info("Loaded configuration file {}".format(args.config_file))
with open(args.config_file, "r") as cf:
config_str = "\n" + cf.read()
logger.info(config_str)
logger.info("Running with config:\n{}".format(cfg))
evaluation(cfg, ckpt=args.ckpt, distributed=distributed)
def cache_url(url, model_dir=None, progress=True):
r"""Loads the Torch serialized object at the given URL.
If the object is already present in `model_dir`, it's deserialized and
returned. The filename part of the URL should follow the naming convention
``filename-<sha256>.ext`` where ``<sha256>`` is the first eight or more
digits of the SHA256 hash of the contents of the file. The hash is used to
ensure unique names and to verify the contents of the file.
The default value of `model_dir` is ``$TORCH_HOME/models`` where
``$TORCH_HOME`` defaults to ``~/.torch``. The default directory can be
overridden with the ``$TORCH_MODEL_ZOO`` environment variable.
Args:
url (string): URL of the object to download
model_dir (string, optional): directory in which to save the object
progress (bool, optional): whether or not to display a progress bar to stderr
Example:
>>> cached_file = maskrcnn_benchmark.utils.model_zoo.cache_url('https://s3.amazonaws.com/pytorch/models/resnet18-5c106cde.pth')
"""
if model_dir is None:
torch_home = os.path.expanduser(os.getenv("TORCH_HOME", "~/.torch"))
model_dir = os.getenv("TORCH_MODEL_ZOO",
os.path.join(torch_home, "models"))
if not os.path.exists(model_dir):
os.makedirs(model_dir)
parts = urlparse(url)
filename = os.path.basename(parts.path)
if filename == "model_final.pkl":
# workaround as pre-trained Caffe2 models from Detectron have all the same filename
# so make the full path the filename by replacing / with _
filename = parts.path.replace("/", "_")
cached_file = os.path.join(model_dir, filename)
if not os.path.exists(cached_file) and is_main_process():
sys.stderr.write('Downloading: "{}" to {}\n'.format(url, cached_file))
hash_prefix = HASH_REGEX.search(filename)
if hash_prefix is not None:
hash_prefix = hash_prefix.group(1)
# workaround: Caffe2 models don't have a hash, but follow the R-50 convention,
# which matches the hash PyTorch uses. So we skip the hash matching
# if the hash_prefix is less than 6 characters
if len(hash_prefix) < 6:
hash_prefix = None
_download_url_to_file(url, cached_file, hash_prefix, progress=progress)
synchronize()
return cached_file
def main():
parser = argparse.ArgumentParser(
description=
'DSSD: Deconvolutional Single Shot MultiBox Detector Training With PyTorch'
)
parser.add_argument(
"--config-file",
default="",
metavar="FILE",
help="path to config file",
type=str,
)
parser.add_argument("--local_rank", type=int, default=0)
parser.add_argument('--log_step',
default=10,
type=int,
help='Print logs every log_step')
parser.add_argument('--save_step',
default=10000,
type=int,
help='Save checkpoint every save_step')
parser.add_argument(
'--eval_step',
default=10000,
type=int,
help='Evaluate dataset every eval_step, disabled when eval_step < 0')
parser.add_argument('--use_tensorboard', default=True, type=str2bool)
parser.add_argument(
"--skip-test",
dest="skip_test",
help="Do not test the final model",
action="store_true",
)
parser.add_argument(
"opts",
help="Modify config options using the command-line",
default=None,
nargs=argparse.REMAINDER,
)
args = parser.parse_args()
num_gpus = int(
os.environ["WORLD_SIZE"]) if "WORLD_SIZE" in os.environ else 1
args.distributed = num_gpus > 1
args.num_gpus = num_gpus
if torch.cuda.is_available():
# This flag allows you to enable the inbuilt cudnn auto-tuner to
# find the best algorithm to use for your hardware.
torch.backends.cudnn.benchmark = True
if args.distributed:
torch.cuda.set_device(args.local_rank)
torch.distributed.init_process_group(backend="nccl",
init_method="env://")
synchronize()
cfg.merge_from_file(args.config_file)
cfg.merge_from_list(args.opts)
cfg.freeze()
if cfg.OUTPUT_DIR:
mkdir(cfg.OUTPUT_DIR)
logger = setup_logger("DSSD", dist_util.get_rank(), cfg.OUTPUT_DIR)
logger.info("Using {} GPUs".format(num_gpus))
logger.info(args)
logger.info("Loaded configuration file {}".format(args.config_file))
with open(args.config_file, "r") as cf:
config_str = "\n" + cf.read()
logger.info(config_str)
logger.info("Running with config:\n{}".format(cfg))
model = train(cfg, args)
if not args.skip_test:
logger.info('Start evaluating...')
torch.cuda.empty_cache() # speed up evaluating after training finished
do_evaluation(cfg, model, distributed=args.distributed)