Ling Jin¹, Huy Phan², Wei Zhou^3,4, Lucas A J Bastien¹, Nancy J Brown⁵ and Robert Harley⁶, (1)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (2)Insa Lyon, Lyon, France, (3)Beijing Jiaotong University, School of Computer and Information Technology, Beijing, China, (4)Lawrence Berkeley National Laboratory, Berkeley, United States, (5)Lawrence Berkeley Natl Lab, Berkeley, CA, United States, (6)University of California, Berkeley, Berkeley, CA, United States