Y. Charlie Hu
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Michael and Katherine Birck Professor of Electrical and Computer Engineering
Professor of Computer Science (by courtesy)
IEEE Fellow
Systems and Networking Group
Purdue University
(See also the official home page)
-
Address:
Purdue University, School of ECE,
EE Building, 465 Northwestern Ave.,
West Lafayette, Indiana 47907-2035
- Phone: 765-494-9143
- Secretary: Gabby Canine, 494-3558
- Links:
Google Scholar,
15 Rep. Papers,
Press,
Software Release,
Awards,
Talks,
Ph.D. Graduates,
Publications
(by date
by type),
Patents
News:
Y. Charlie Hu's research interests are in Mobile Systems, Distributed Systems, Operating Systems, and Computer Networks.
He is an ACM Distinguished Scientist and an IEEE Fellow. He
received his Ph.D. in Computer Science from Harvard in 1997. He is a
recipient of the Honda Initiation Grant Award, NSF CAREER Award,
Purdue University College of Engineering Early Career Research Award
in 2009,
Purdue University Faculty Scholar (2011-2016), and EuroSys Best
Student Paper Award in 2012. He has served as a General Co-Chair of
ACM SIGCOMM 2014, and Program Committee Co-Chair of ACM MobiCom 2016
and ACM SIGOPS EuroSys 2018. Since 2010, his research group has
conducted ground-breaking work on energy profiling and energy
debugging on smartphones which has been widely covered by over 500
news media such as ABC News, NBC News, BBC, Times of India, MIT Tech
Review, and Scientific American. The technology has been
commercialized and is extending the battery life of hundreds of
millions of smartphones.
Selected Publications
Machine Learning at the Edge
Do Larger (More Accurate) DNN Models Help in Edge-Assisted AR? (SIGCOMM NAI 2021)
AQuA: Analytical Quality Assessment for Optimizing Video Analytics Systems (Symp. Edge Computing 2021)
VR/AR, 5G, and Edge Computing
Can 5G mmWave Support Multi-user AR apps? (PAM 2022)
An Analysis of End-to-End Delay in 360-degree Live Video Streaming (ACM Multimedia 2020)
Coterie: Exploiting Frame Similarity to Enable High-Quality
Multiplayer VR on Commodity Mobile Devices (ASPLOS 2020)
How to Evaluate Mobile 360-degree Video Streaming Systems? (HotMobile 2020)
Mobility Support in Cellular Networks: A Measurement Study on Its Configurations and Implications (IMC 2018)
Furion: Engineering High-Quality Immersive Virtual Reality on Today's Mobile Devices (MobiCom 2017) (150 cites Google Scholar)
Energy Profiling, Debugging, and Analytics: The Foundation of AEM (App Energy Management)
Experience: Developing a Usable Battery Testing and Diagnostic Tool for the Mobile Industry (ACM MobiCom 2021)
Proactive Energy-Aware Adaptive Video Streaming on Mobile Devices (USENIX ATC 2021)
How much battery does dark mode save? An Accurate OLED Display Power Profiler for Modern Smartphones (MobiSys 2021) (press)
Why is my app draining more battery? Energy Optimization via Diffing Similar Apps (OSDI 2018)
A Fine-grained Event-based Modem Power Model for Enabling In-depth Modem Energy Drain Analysis (Sigmetrics 2018)
GfxDoctor: A Holistic Graphics Energy Profiler for Mobile Devices (EuroSys 2017)
Unsafe Time Handling in Smartphones (USENIX ATC 2016)
Smartphone Background Activities in the Wild:
Origin, Analysis and Optimization (MobiCom 2015) (read BBC and Internet-wide media coverage
99 cites Google Scholar)
Smartphone Energy Drain in the Wild:
Analysis and Implications (Sigmetrics 2015) (Podcast by Scientific American) (120 cites in Google Scholar)
Energy and Performance of Smartphone Radio Bundling in Outdoor Environments (WWW 2015)
On Death, Taxes, and Sleep Disorder Bugs in Smartphones (HotPower 2013)
How Much Energy Can We Save from Prefetching Ads?
Energy Drain Analysis of Top 100 Apps (HotPower 2013)
Hypnos: Understanding and Treating Sleep Conflicts in Smartphones (EuroSys 2013) (40 cites)
Characterizing and Modeling the Impact of
Wireless Signal Strength on Smartphone Battery Drain (Sigmetrics 2013)
(240 cites in Google Scholar)
What is keeping my phone awake? Characterizing and Detecting No-Sleep Energy Bugs in Smartphone Apps (MobiSys 2012) (340 cites in Google Scholar)
Where is the energy spent inside my app? Fine Grained Energy Accounting on Smartphones with Eprof (EuroSys 2012, Best Student Paper Award) (850 cites in Google Scholar)
Fine-Grained Power Modeling for Smartphones Using System Call Tracing (EuroSys 2011) (450 cites in Google Scholar)
Bootstrapping Energy Debugging on Smartphones: A First Look at Energy Bugs in Mobile Devices (HotNets 2011) (280 cites in Google Scholar)
Data Center Networking, Cloud Computing
A Case for Task Sampling based Learning for Cluster Job Scheduling (NSDI 2022)
Your Coflow has Many Flows: Sampling Them for Fun and Speed (USENIX ATC 2019)
Saath: Speeding up CoFlows by Exploiting the Spatial Dimension (CoNEXT 2017)
Cloud-scale Load Balancer - Episode III: Yoda: A highly available layer-7 load balancer (EuroSys 2016)
Cloud-scale Load Balancer - Episode II: Unlocking the Power of Locality and End-point Flexibility in Cloud Scale Load Balancer (USENIX ATC 2015)
Cloud-scale Load Balancer - Episode I: Duet: Cloud Scale Load Balancing with Hardware and Software (SIGCOMM 2014) (200 cites)
On the impact of packet spraying in data center networks (INFOCOM 2013) (200 cites)
The Only Constant is Change: Incorporating Time Varying Network Reservations in Data Centers (SIGCOMM 2012) (350 cites in Google Scholar)
The TCP Outcast Problem: Exposing Unfairness in Data Center Networks (NSDI 2012) (80 cites)
On the Efficacy of Fine-Grained Traffic Splitting Protocols in Data Center Networks (Sigmetrics 2012 Ext. Abs.)
Latency Inflation with MPLS-based Traffic Engineering (IMC 2011)
Optimizing Cost and Performance in Online Service Provider Networks (NSDI 2010) (140 cites in Google Scholar)
Operating Systems / Buffer Cache Management:
The Performance Impact of Kernel Prefetching on Buffer Cache Replacement Algorithms (SIGMETRICS 2005, IEEE TC 2007, Software Release)
(150 cites in Google Scholar)
Program Counter Based Pattern Classification in Buffer Caching
(OSDI 2004) (150 cites in Google Scholar)
Program Counter Based Prediction Techniques for Dynamic Power Management (HPCA 2004, IEEE TC 2006)
Wireless Networking:
Pacifier: High-Throughput, Reliable Multicast without "Crying Babies" in Wireless Mesh Networks. (ToN 2012, Software Release) (120 cites Google Scholar)
CCACK: Efficient Network Coding Based Opportunistic Routing through Cumulative Coded Acknowledgments (ToN 2011) (200 cites Google Scholar)
Context Based Routing: Technique, Applications and Experience (NSDI 2008)
How to evaluate exotic wireless routing protocols? (HotNets 2008)
TDM MAC Protocol Design and Implementation
for Wireless Mesh Networks (CoNEXT 2008)
Practical Service Provisioning for Wireless Meshes (CoNEXT 2007)
How to Improve Your Google Ranking: Myths and Reality (WI 2010, press:
InfoExec,
JH Web,
SpoonyLife,
1 of 7 favorite papers of Human Factors International 2014)
Botnet Spam Campaigns can be Long Lasting: Evidence, Implications, and Analysis (SIGMETRICS 2009)
iSPY: Detecting IP Prefix Hijacking on My Own (SIGCOMM 2008, ToN 2010)
(200 cites in Google Scholar)
Practical Defenses Against BGP Prefix Hijacking (CoNEXT 2007)
Understanding Network Delay Changes Caused by Routing Events (SIGMETRICS 2007)
On the Impact of Research Network Based Testbeds on Wide-area Experiments (IMC 2006)
Exploiting the Synergy between Peer-to-Peer and Mobile Ad Hoc Networks (HotOS 2003) (150 cites in Google Scholar)
Runtime Support for Distributed Sharing in Safe Languages (ACM TOCS 2003)
Selected Recent Projects:
Funding
Research in our group has been supported by
Ph.D Students
Note to applicants
Past Postdoc
- Chris Gniady (Ph.D. 2005, Associate Professor, Computer Science Dept., University of Arizona, NSF CAREER Award 2009)
- Ali R. Butt (Ph.D. 2006, Professor, Computer Science Dept., Virginia Tech, NSF CAREER Award 2008)
- Shuo Yang (with Prof. S. Midkiff) (Ph.D. December 2006, Google, LLC)
- Rongmei Zhang (Ph.D. December 2006, Google, LLC)
- Saumitra Das (Ph.D. December 2007, Qualcomm Research, Silicon Valley)
- Himabindu Pucha (Ph.D. December 2007, IBM Almaden Research --> Google)
- Zheng Zhang (Ph.D. December 2009, Knight Capital Group Holdings --> Two Sigma)
- Dimitrios Koutsonikolas (Ph.D. 2010, Associate Professor, Northeastern University, NSF CAREER Award 2016)
- Abhinav Pathak (Ph.D. 2012, Apple Inc. -- World's Most Exciting Company!)
- Di Xie (Ph.D. 2013, Microsoft --> Google)
- Pawan Prakash (with Prof. Ramana Kompella) (Ph.D. 2013, AppFormix)
- Advait Dixit (with Prof. Ramana Kompella) (Ph.D. 2014, Barefoot Networks --> Cisco)
- S. M. Iftekharul Alam (with Prof. Sonia Fahmy) (Ph.D. 2015, Intel Labs)
- Rohan Gandhi (Ph.D. 2016, Microsoft --> CMU)
- Ning Ding (Ph.D. 2017, Apple Inc.)
- X. Mona Chen (Ph.D. 2017, Apple Inc.)
- Abhilash Jindal (Ph.D. 2017, Co-Founder, Mobile Enerlytics)
- Akshay Jajoo (Ph.D. 2020, Nokia Bell Labs)
- Sunil Patro (M.S. May 2003, Microsoft --> Founder & CEO, SignEasy)
- Himabindu Pucha (M.S. December 2003, Purdue ECE PhD program)
- Sabyasachi Roy (M.S. July 2007, VMware --> Facebook)
- Zeqi Lai (Visiting student, Tsinghua University)
- Chengze Fan (Visiting student, Tsinghua University)
Teaching
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ECE 673
Distributed Computing Systems (Spring 2022, 2020, 2019, Fall 2016, 2014, 2012, 2011, 2010, 2007-2002)
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ECE 695
Introduction to Operating Systems (Fall 2021, 2020)
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ECE 595
Introduction to Operating Systems (Fall 2019, 2018, Spring 2017)
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ECE 469
Operating Systems Engineering (Spring 2015, 2014, 2013, 2011-2009, 2007-2005, 2003, 2002)
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ECE Wireless Networking Seminar (Spring 2011)
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ECE Wireless Networking Seminar (Fall 2010)
Professional activities
- Steering Committee: ACM SIGOPS EuroSys
- Program Committees:
EuroSys 2022,
MobiCom 2022,
EuroSys 2021,
MobiSys 2021,
MobiCom 2021,
APNet 2021,
OSDI 2020,
EuroSys 2020,
MobiSys 2020,
ASPLOS 2020 ext,
MobiCom 2020,
EuroSys 2019,
MobiSys 2019 ext,
ASPLOS 2019 ext,
MobiSys 2018,
MobiCom 2018,
APNet 2017,
MobiSys 2017,
MobiCom 2017,
OSDI 2016,
EuroSys 2016,
MobiSys 2016 ext,
ASPLOS 2016 ext,
MobiSys 2015 ext,
ASPLOS 2015 ext,
Sigmetrics 2015,
MobiCom 2015,
NeTS Early Career Workshop 2015,
EuroSys 2014,
MobiSys 2014 ext,
EuroSys 2013,
CoNEXT 2013,
Sigmetrics 2013,
Hotpower 2013,
Sigmetrics 2012,
CoNEXT 2012,
Sigmetrics 2011,
IFIP Performance 2011,
Sigmetrics 2009,
CoNEXT 2009,
ACM Sigmetrics 2008,
INFOCOM 2012-2006
- PC Co-Chair, ICNP 2021
- PC Co-Chair, EuroSys 2018
- PC Co-Chair, MobiCom 2016
- PC Co-Chair, HotPower 2015
- General Co-Chair, SIGCOMM 2014
- Publication Chair, SIGCOMM 2013
- Publicity Co-Chair, Sigmetrics 2012
- PC Vice Chair, SBAC PAD 2009
- PC Vice Chair, IEEE ICDCS 2007
- PC Vice Chair,
International Conference on
Parallel Processing (ICPP) 2004
Links
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