fix (#3167)

Co-authored-by: xiang song(charlie.song) <classicxsong@gmail.com>
Co-authored-by: zhjwy9343 <6593865@qq.com>

examples/pytorch/seal/main.py

@@ -10,6 +10,8 @@ from utils import load_ogb_dataset, evaluate_hits
 from sampler import SEALData
 from model import GCN, DGCNN
 from logger import LightLogging
+import torch.multiprocessing
+torch.multiprocessing.set_sharing_strategy('file_system')
 
 '''
 Part of the code are adapted from