Zhikui Wang

Biography

Zhikui received his Ph.D. degree  in Electrical Engineering/Control Systems from UCLA. He then joined HP Labs, working on automatic control and optimization problems in data centers. Zhikui is now a researcher in the Sustainable Ecosystem Research Group.

Research interests

Zhikui is interested in application of control theory and optimization techniques in data center management, including but not limited to pwerformance management, dynamic resource allocation, workload management, power management, cooling control and networking management.

Publications

Data center federated control and management, which is to address the multi-scale operation management problems in data centers including application performance control, dynamic resource allocation, power and cooling control, and the power supply and demand management.

• Daniel Gmach, Jerry Rolia, Cullen Bash, Yuan Chen, Tom Christian, Amip Shah, Ratnesh Sharma and Zhikui Wang, Capacity Planning and Power Management to Exploit Sustainable Energy, in Proceedings of the 6th International Conference on Network and Service Management (CNSM 2010), Niagara Falls, Canada, Oct 25-29, 2010
• Zhikui Wang, Niraj Tolia, and Cullen Bash, Opportunities and Challenges to Unify Workload, Power, and Cooling Management in Data Centers, in Proceedings of the 5th International Workshop on Feedback Control Implementation and Design in Computing Systems and Networks (FeBID 2010), Paris, France, April 2010, Also selected for inclusion in ACM SIGOPS Operating Systems Review (OSR), July 2010
• Yuan Chen, Daniel Gmach, Chris Hyser, Zhikui Wang, Cullen Bash, Christopher Hoover, Sharad Singhal, Integrated Management of Application Performance, Power and Cooling in Data Centers, in Proceedings of the 12th IEEE/IFIP Network Operations and Management Symposium (NOMS 2010), Apr 19-23, 2010, Osaka, Japan
• Niraj Tolia, Zhikui Wang, Parthasarathy Ranganathan, Cullen Bash, Manish Marwah, Xiaoyun Zhu, Unified Thermal and Power Management in Server Enclosures, in Proceedings of the ASME/Pacific Rim Technical Conference and Exhibition (InterPACK’09), San Francisco, CA, July 2009.
• X. Zhu, D. Young, B. J. Watson, Z. Wang, J. Rolia, S. Singhal, B. McKee, C. Hyser, D. Gmach, R. Gardner, T. Christian, and L. Cherkasova, 1000 Islands: Integrated Capacity and Workload Management for the Next Generation Data Center, in Proceedings of the 5th International Conference on Autonomic Computing. (ICAC '08) , Publication Date: 2-6 June 2008, On page(s): 172 – 181, Chicago, IL. Also appeared in Cluster Computing, special Issue on Automatic Computing, vol 12, no. 1, 2009, with title “1000 Islands: An Integrated approach to resource management for virtualized data center”.

Data Center Cooling Control, which is to develop active cooling control and optimization solutions for contained, non-contained, or modular data center environments that are adaptive, robust, scalable and efficient.

• Rongliang Zhou, Zhikui Wang, Cullen E. Bash, Christopher Hoover, Rocky Shih, Alan McReynolds, Ratnesh Sharma, and Niru Kumari, A holistic and optimal approach for data center cooling management, 2011 American Control Conference (ACC 2011), San Francisco, California, USA, June 29-July 1, 2011.
• Zhikui Wang, Cullen E. Bash, Christopher Hoover, Alan A. McReynolds, Carlos J. Felix, and Rocky Shih, Integrated Management of Cooling Resources in Air-Cooled Data Centers, in Proceedings of the 6th IEEE Conference on Automation Science and Engineering (CASE 2010), Toronto, Canada, August 21-24, 2010.
• Zhikui Wang, Cullen Bash, Niraj Tolia, Manish Marwah, Xiaoyun Zhu, Parthasarathy Ranganathan, Optimal fan speed control for thermal management of servers, in Proceedings of the ASME/Pacific Rim Technical Conference and Exhibition (InterPACK’09), San Francisco, CA, July 2009.
• Monem Beitelmal, Zhikui Wang, Carlos Felix, Cullen Bash, Christopher Hoover, Alan McReynolds, Local Cooling Control of Data Centers with Adaptive Vent Tiles, in Proceedings of the ASME/Pacific Rim Technical Conference and Exhibition (InterPACK’09),, San Francisco, CA, July 2009.
• Zhikui Wang, Alan McReynolds, Carlos Felix, Cullen Bash, Christopher Hoover, Kratos: Automated Management of Cooling Capacity in Data Centers with Adaptive Vent Tiles, in Proceedings of the 2009 ASME International Mechanical Engineering Congress & Exposition (IMECE 2009), Nov 13-19, 2009, Lake Buena Vista, Florida.

Power Management in Servers and Data Centers, which is to develop power control solutions for server(s) and data centers that can manage both the average and peak power consumption of the servers or the data centers, and adapt the power consumption to the demand of the workloads.

• Zhikui Wang and Parthasarathy Ranganathan, Cross-layer power management, accepted as a chapter of the book “Green Computing: Large-Scale Energy Efficiency”, edited by Wuchun Feng, Taylor & Francis /CRC Press, to appear.
• Niraj Tolia, Zhikui Wang, Manish Marwah, Cullen Bash, Parthasarathy Ranganathan, Xiaoyun Zhu, Delivering Energy Proportionality with Non Energy Proportional Systems – Optimizations at the Ensemble Layer, in Proceedings of the Workshop on Power Aware Computing and Systems (HotPower '08), San Diego, CA, December 2008.
• R. Raghavendra, P. Ranganathan, V. Talwar, Z. Wang, and X. Zhu, No power struggles: Coordinated multi-level power management for the data center, in Proceedings of the 13th international conference on Architectural support for programming languages and operating systems, (ASPLOS XIII), March 2008. Seattle, WA, USA March, 2008, Pages 48-59
• Z. Wang, C. McCarthy , X. Zhu, P. Ranganathan, V. Talwar, Feedback Control Algorithms for Power Management of Servers, in Proceedings of the 3rd International Workshop on Feedback Control Implementation and Design for Computing Systems and Networks (FeBiD 2008), 6 June 2008, Annapolis, Maryland, USA.
• R. Raghavendra, P. Ranganathan, V. Talwar, X. Zhu, and Z. Wang, Motivating co-ordination of power management solutions in data centers, In Proceedings of the 2007 IEEE international Conference on Cluster Computing (September 17 - 20, 2007). CLUSTER. IEEE Computer Society, Washington, DC

Dynamic Resource Control and Performance Management, which is to develop control architecture and algorithms for active management of the application-level performance such as response time and throughput through dynamic resource allocation in virtualized environments.

• Pengcheng Xiong, Zhikui Wang, Simon Malkowski, Deepal Jayasinghe, Qingyang Wang, Calton Pu, Economical and Robust Provisioning of N-Tier Cloud Workloads: A Multi-level Control Approach, in the 31st International Conference on Distributed Computing Systems (ICDCS 2011), June 20-24, 2011 Minneapolis, Minnesota, USA.
• Brian J. Watson, Manish Marwah, Daniel Gmach, Yuan Chen, Martin Arlitt, Zhikui Wang, Probabilistic Performance Modeling of Virtualized Resource Allocation, in Proceedings of the 7th IEEE/ACM International Conference on Automatic Computing and Communications (ICAC 2010), Washing DC, USA, June 7-11, 2010
• Pengcheng Xiong, Zhikui Wang, Gueyoung Jung and Calton Pu, Study on performance management and application behavior in virtualized environment, short paper, in Proceedings of the 12th IEEE/IFIP Network Operations and Management Symposium (NOMS 2010), Apr 19-23, 2010, Osaka, Japan.
• Z. Wang, Y. Chen, D. Gmach, S. Singhal, B. J. Watson, W. Rivera, X. Zhu, C. D. Hyser, AppRAISE: Application-Level Performance Management in Virtualized Server Environments, in IEEE Transactions on Network and Service Management, Vol. 6, No. 4, pp 240-254, December 2009.
• Pradeep Padala, Kai-Yuan Hou, Kang G. Shin, Xiaoyun Zhu, Mustafa Uysal, Zhikui Wang, Sharad Singhal, Arief Mechant, Automated Control of Multiple Virtualized Resources, in Proceedings of Eurosys 2009, Mar 31st to Apr 3rd , Nuremberg, Germany.
• Xiaoyun Zhu, Mustafa Uysal, Zhikui Wang, Sharad Singhal, Arif Merchant, Pradeep Padala, Kang Shin, What does control theory bring to systems research?, in SIGOPS Operating Systems Review, vol 43, no 1, 2009.
• Jin Heo, Xiaoyun Zhu, Pradeep Padala, Zhikui Wang, Memory Overbooking and Dynamic Control of Xen Virtual Machines in Consolidated Environments, in Proc. of IM 2009, Mini-Conference.
• Xue Liu, Xiaoyun Zhu, Jianguo Yao, Zhikui Wang, and Sharad Singhal, Simplified Control for Complex IT Systems using Dimension Reduction, in Proceedings of the 3rd International Workshop on Feedback Control Implementation and Design for Computing Systems and Networks (FeBiD 2008), 6 June 2008, Annapolis, Maryland, USA
• X. Liu, X. Zhu, P. Padala, Z. Wang, S. Singhal, Optimal multivariate control for differentiated services on a shared hosting platform, in Proceedings of the 46th IEEE Conference on Decision and Control (CDC2007), December 2007.
• Z. Wang, X. Zhu, P. Padala, and S. Singhal, Capacity and performance overhead in dynamic resource allocation to virtual containers, in Proceedings of the 10th IFIP/IEEE Symposium on Integrated Management (IM2007), May 2007.
• Z. Wang, X. Liu, A. Zhang, C. Stewart, X. Zhu, T. Kelly, and S. Singhal, AutoParam: Automated control of application-level performance in virtualized server environment, presented at the 2nd IEEE International Workshop on Feedback Control Implementation and Design in Computing Systems and Networks (FeBID2007), May 2007.
• P. Padala, X. Zhu, M. Uysal, Z. Wang, S. Singhal, A. Merchant, K. Salem, and K. Shin, Adaptive control of virtualized resources in utility computing environments, in Proceedings of EuroSys (EuroSys2007), Lisbon, Portugal, 21-23 March 2007.
• X. Zhu, Z. Wang, and S. Singhal, “Utility-Driven workload management using nested control design,” in Proceedings of the American Control Conference (ACC), June 14-16, 2006.
• W. Xu, X. Zhu, S. Singhal, Z. Wang, “Predictive Control for Dynamic Resource Allocation in Enterprise Data Centers”, in Proceedings of the 2006 IEEE/IFIP Network Operations & Managment Symposium (NOMS), Apr. 2006.
• Z. Wang, X. Zhu, S. Singhal, “Utilization and SLO-Based Control for Dynamic Sizing of Resource Partitions”, in Proceedings of the 16th IFIP/IEEE Distributed Systems: Operations and Management (DSOM), October 24-26, 2005, Barcelona, Spain.

Network Congestion Control (done before Joining HP Labs), which was to create scalable and adaptive congestion control algorithms for the Internet.

• Zhikui Wang, Congestion Control with Scalable Stability: Analysis and Implementation, Ph.D. dissertation, UCLA, 2005.
• Z. Wang, F. Paganini, Global Stability of Nonlinear Congestion Control with Time-Delay, in Advances in Communication Control Networks, Editors. S. Tarbouriech, C.T. Abdallah, J. Chiasson, Lecture Notes in Control & Information Science, Springer-Verlag, 2004.
• F. Paganini, Z. Wang, S. Low, J. Doyle, Congestion control for high performance, stability and fairness in general networks, IEEE/ACM Trans. on Networking, Vol. 13, No 1, Feb 2005.
• Z. Wang, F. Paganini, Boundedness and Global Stability of a Nonlinear Congestion Control with Delays, IEEE Trans. on Automatic Control, Vol. 51, No. 9, pp. 1514-1519, Sep 2006
• Z. Wang, F. Paganini, Improved results on global stability of network congestion control based on iterative bounding, in Proc. of the 43rd IEEE Conference on Decision and Control, Dec 14-17, 2004, Paradise Island, Bahamas.
• Z. Wang, F. Paganini, Global Stability with Time-Delay of a Primal-Dual Congestion Control, Proc. of the 42nd IEEE Conference on Decision and Control, pages 3671-3676, Maui, Hawaii, Dec. 2003.
• F. Paganini, Z. Wang, S. Low, J. Doyle, A new TCP/AQM for Stable Operation in Fast Networks, Proc. of IEEE Infocom, San Francisco, March 30-April 3, 2003.
• Z. Wang, F. Paganini, Global Stability with Time Delay in Network Congestion Control, in Proceedings of the 41st IEEE Conference on Decision and Control, pages 3632-3637, Las Vegas, Nevada, Dec. 2002.