def main():
args = parse_args()
cfg = mmcv.Config.fromfile(args.config)
if args.options is not None:
cfg.merge_from_dict(args.options)
# set cudnn_benchmark
if cfg.get('cudnn_benchmark', False):
torch.backends.cudnn.benchmark = True
cfg.model.pretrained = None
cfg.data.test.test_mode = True
# 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)
# build the dataloader
dataset = build_dataset(cfg.data.test)
data_loader = build_dataloader(dataset,
samples_per_gpu=cfg.data.samples_per_gpu,
workers_per_gpu=cfg.data.workers_per_gpu,
dist=distributed,
shuffle=False,
round_up=False)
# build the model and load checkpoint
model = build_classifier(cfg.model)
fp16_cfg = cfg.get('fp16', None)
if fp16_cfg is not None:
wrap_fp16_model(model)
checkpoint = load_checkpoint(model, args.checkpoint, map_location='cpu')
if not distributed:
model = MMDataParallel(model, device_ids=[0])
outputs = single_gpu_test(model, data_loader)
else:
model = MMDistributedDataParallel(
model.cuda(),
device_ids=[torch.cuda.current_device()],
broadcast_buffers=False)
outputs = multi_gpu_test(model, data_loader, args.tmpdir,
args.gpu_collect)
rank, _ = get_dist_info()
if rank == 0:
if args.metrics:
results = dataset.evaluate(outputs, args.metrics,
args.metric_options)
for k, v in results.items():
print(f'\n{k} : {v:.2f}')
else:
warnings.warn('Evaluation metrics are not specified.')
scores = np.vstack(outputs)
pred_score = np.max(scores, axis=1)
pred_label = np.argmax(scores, axis=1)
if 'CLASSES' in checkpoint['meta']:
CLASSES = checkpoint['meta']['CLASSES']
else:
from mmcls.datasets import ImageNet
warnings.simplefilter('once')
warnings.warn('Class names are not saved in the checkpoint\'s '
'meta data, use imagenet by default.')
CLASSES = ImageNet.CLASSES
pred_class = [CLASSES[lb] for lb in pred_label]
results = {
'pred_score': pred_score,
'pred_label': pred_label,
'pred_class': pred_class
}
if not args.out:
print('\nthe predicted result for the first element is '
f'pred_score = {pred_score[0]:.2f}, '
f'pred_label = {pred_label[0]} '
f'and pred_class = {pred_class[0]}. '
'Specify --out to save all results to files.')
if args.out and rank == 0:
print(f'\nwriting results to {args.out}')
mmcv.dump(results, args.out)
def main():
args = parse_args()
cfg = mmcv.Config.fromfile(args.config)
# set cudnn_benchmark
if cfg.get('cudnn_benchmark', False):
torch.backends.cudnn.benchmark = True
cfg.model.pretrained = None
cfg.data.test.test_mode = True
# 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)
# build the dataloader
dataset = build_dataset(cfg.data.test)
data_loader = build_dataloader(dataset,
samples_per_gpu=cfg.data.samples_per_gpu,
workers_per_gpu=cfg.data.workers_per_gpu,
dist=distributed,
shuffle=False,
round_up=False)
# build the model and load checkpoint
model = build_classifier(cfg.model)
fp16_cfg = cfg.get('fp16', None)
if fp16_cfg is not None:
wrap_fp16_model(model)
_ = load_checkpoint(model, args.checkpoint, map_location='cpu')
if not distributed:
model = MMDataParallel(model, device_ids=[0])
outputs = single_gpu_test(model, data_loader)
else:
model = MMDistributedDataParallel(
model.cuda(),
device_ids=[torch.cuda.current_device()],
broadcast_buffers=False)
outputs = multi_gpu_test(model, data_loader, args.tmpdir,
args.gpu_collect)
rank, _ = get_dist_info()
if rank == 0:
nums = []
results = {}
for output in outputs:
nums.append(output['num_samples'].item())
for topk, v in output['accuracy'].items():
if topk not in results:
results[topk] = []
results[topk].append(v.item())
assert sum(nums) == len(dataset)
for topk, accs in results.items():
avg_acc = np.average(accs, weights=nums)
print(f'\n{topk} accuracy: {avg_acc:.2f}')
if args.out and rank == 0:
print(f'\nwriting results to {args.out}')
mmcv.dump(outputs, args.out)