Shaolei Ren

Shaolei Ren 







Shaolei Ren
Assistant Professor of Electrical and Computer Engineering
Cooperating Faculty of Computer Science and Engineering
University of California, Riverside

News

(Some) Research Interests

  • Data centers, cyber-physical systems, mobile edge computing, smart grid and buildings, scheduling in web-scale systems

Research Updates

  • New Paper “Exploiting a Thermal Side Channel for Power Attacks in Multi-Tenant Data Centers” will appear in the ACM Conference on Computer and Communications Security (CCS) 2017! [PDF available soon]

    • Our first work on an adversarial setting in multi-tenant colocation data centers; a three-page extended abstract available here: PDF

  • New Paper “Minimizing Electricity Cost for Geo-Distributed Interactive Services with Tail Latency Constraint” will appear in the International Green and Sustainable Computing Conference (IGSC) 2016! [PDF] [Slides]

  • New Paper “A Market Approach for Handling Power Emergencies in Multi-Tenant Data Center” will appear in the 22nd IEEE International Symposium on High Performance Computer Architecture (HPCA) 2016! [PDF] [Slides]

  • New Paper “An Online Incentive Mechanism for Emergency Demand Response in Geo-Distributed Colocation Data Centers” will appear in the ACM International Conference on Future Energy Systems (e-Energy, Best Paper Award), 2016! [PDF]

  • New Paper “A New Perspective on Energy Accounting in Multi-Tenant Data Centers” is accepted through a double-blind review and will appear in the USENIX Workshop on Cool Topics in Sustainable Data Centers (CoolDC) 2016! [PDF] [Slides]

  • Paper “Paying to Save: Reducing Cost of Colocation Data Center via Rewards” will appear in the 21st IEEE International Symposium on High Performance Computer Architecture (HPCA) 2015! [PDF] [Slides]

  • Paper “Optimal Aggregation Policy for Reducing Tail Latency of Web Search” will appear in the 38th ACM SIG on Information Retrieval (SIGIR) 2015! [PDF] [Slides]

  • Paper “Greening Multi-Tenant Data Center Demand Response” will appear in the 33rd International Symposium on Computer Performance, Modeling, Measurements and Evaluation (IFIP WG7.3 Performance) 2015! [PDF] [Slides]

  • Article How Can Supercomputers Survive a Drought? appears at HPCwire. (Also reported by ACM TechNews on Communications of the ACM.)

Highlight (Blog)

Overview of multi-tenant data center Inside of Switch SuperNAP data center Percentage of data center energy consumption in the United States
Overview of multi-tenant data center
Inside of Switch SuperNAP data center
(from: www.supernap.com)
Electricity usage by data center segment
(compiled based on NRDC data and excluding server closets)

As critical assets supporting the exploding information technology (IT) demands and digital economy, data centers have been massively expanding in both number and scale, resulting in a formidable power demand of 38GW in 2012 (a growth of 63% compared to 2011) and collectively accounting for over 2% of global electricity usage. The rising energy price and heavy use of carbon-intensive electricity have undeniably placed an increasing emphasis on optimizing data center power management. While the progress is encouraging, another important type of data center – multi-tenant data center, or commonly called “colocation”/“colo” – has been largely hidden from the public and rarely discussed (at least in research papers), although it's very common in practice and located almost everywhere, from Silicon Valley to the gambling capital, Las Vegas. My CAREER project focuses on power-management in multi-tenant colocation data centers. For more details, please refer to the project page:

Google street view of 818 W. 7th Street, Los Angeles, CA 90017
A "data center" located in 818 W. 7th Street, Los Angeles, CA 90017 (from Google Maps)


Contact

Shaolei Ren
Department of Electrical and Computer Engineering
University of California, Riverside

Office: Bourns Hall B357
Phone: 951-827-2260
E-mail: sren (AT) ece.ucr.edu