Update dataset_traversal.py
@ -237,7 +237,7 @@ class SimpleReader(object):
def get_device_num():
if self.use_gpu:
gpus = os.environ.get("CUDA_VISIBLE_DEVICES", 1)
gpus = os.environ.get("CUDA_VISIBLE_DEVICES", '1')
gpu_num = len(gpus.split(','))
return gpu_num
else: