Xi Chen is a fourth-year Ph.D. student at the Electrical Engineering and Computer Science Department of the University of Michigan. He received his M.S. degree from Northwestern University in 2008 and his B.S. degree from Tsinghua University in 2006. His research interests include power and energy optimization techniques in server, blade server, and large-scale data center environments, performance-oriented architectural optimizations, user-driven power management, and embedded systems.

• Performance modeling, power modeling, and power management techniques in servers, blades, and large-scale data centers.
• Accelerate dynamic thermal analysis via asynchronous time marching
• Optimize system power consumption by leveraging human physiological traits
• Improve CMP performance via cache compression and cache line migration
• High-performance cache compression techniques to expand usable on-chip memory
• OS-controlled bus encryption technique to protect off-chip data transmission

• X. Chen, C. Xu, R. P. Dick, “Memory Access Aware On-Line Voltage Control for Performance and Energy Optimization,” to appear in Proc. Int. Conf. Computer-Aided Design (ICCAD), Nov. 2010.
• X. Chen, C. Xu, R. P. Dick, Z. M. Mao, “Performance and Power Modeling in a Multi-Programmed Multi-Core Environment,” to appear in Proc. Design Automation Conference (DAC), Jun. 2010.
• C. Xu, X. Chen, R. P. Dick, Z. M. Mao, “Cache Contention and Application Performance Prediction for Multi-Core Systems,” to appear in Proc. Int. Symp. on Performance Analysis of Systems and Software (ISPASS), Mar. 2010.(paper)
• X. Chen, R. P. Dick, L. Shang, “Properties of and Improvements to Time-Domain Dynamic Thermal Analysis Algorithms,” in Proc. Design, Automation, and Test in Europe Conf. (DATE), Mar. 2010.(One of two best papers from 847 submitted papers) (paper)
• X. Chen, L. Yang, R. P. Dick, L. Shang, and H. Lekatsas, “C-Pack: A high-performance microprocessor cache compression algorithm,” in IEEE Trans. VLSI Systems (TVLSI), to appear.(paper)
• L. Yang, R. P. Dick, G. Memik, P. Dinda, and X. Chen, “HAPPE: Human and Application Driven Frequency Scaling for Processor Power Efficiency,” submitted to IEEE Transactions on Mobile Computing (TMC).
• S. Yazji, X. Chen, R. P. Dick, and P. Scheuermann, “Implicit user re-authentication for mobile devices,” in Proc. Int. Conf. on Ubiquitous Intelligence and Computing (UIC), Jul. 2009.(paper)
• A. Shye, L. Yang, X. Chen and B. Ozisikylmaz, A. Mallik, B. Lin, G. Memik, R. P. Dick, and P. Dinda, “Empathic Computer Architectures and Systems,” in Proc. Int. Conf. Architectural Support for Programming Languages and Operating Systems - Wild and Crazy Ideas VI (ASPLOS-WACI), Mar. 2008.(paper)
• X. Chen, R. P. Dick, and A. Choudhary, “Operating system controlled processor-memory bus encryption,” in Proc. Design, Automation, and Test in Europe Conf. (DATE), Mar. 2008.(paper)
• X. Chen, L. Yang, H. Lekatsas, R. P. Dick, and L. Shang, “Design and implementation of a high-performance microprocessor cache compression algorithm,” in Proc. Data Compression Conf. (DCC), Mar. 2008.(paper)
• L. Yang, X. Chen, R. P. Dick, L. Shang, and H. Lekatsas, “Chip Multiprocessor Cooperative Cache Compression and Migration,” Northwestern University, Apr. 2008.(paper)

EECS Department, CSE Division

University of Michigan

1301 Beal Ave

Ann Arbor, MI 48109

Email: chexi at umich dot edu