Peer-reviewed Publications

• "Characterizing Throughput Bottlenecks for Secure GridFTP Transfers", Gayane Vardoyan, Rajkumar Kettimuthu, Steve Tuecke and Michael Link, 2013 International Conference on Computing, Networking and Communications, Internet Services and Applications Symposium, Jan 2013 (to appear).

• "Exploiting Network Parallelism for Improving Data Transfer Performance", Daniel Gunter, Rajkumar Kettimuthu, Ezra Kissel, Martin Swany and Jason Zurawski, IEEE/ACM Annual SuperComputing Conference (SC12) Companion Volume, Nov 2012 (to appear).

• "Accelerating Data Movement Leveraging Endsystem and Network Parallelism", Jun Yi, Rajkumar Kettimuthu and Venkatram Vishwanath, IEEE/ACM SC12 Workshop on Network-aware Data Management (to appear).

• "GridFTP based real-time data movement architecture for x-ray photon correlation spectroscopy at the Advanced Photon Source", Suresh Narayanan, Timothy Madden, Alec Sandy, Rajkumar Kettimuthu and Michael Link, IEEE eScience 2012 Workshop on eScience Meets the Instrument, Oct 2012 (pdf).

• "High-Performance Data Management For Genome Sequencing Centers Using Globus Online: A Case Study", Dinanath Sulakhe, Rajkumar Kettimuthu and Utpal Dave, IEEE eScience 2012 Workshop on Extending High-Performance Computing Beyond its Traditional User Communities, Oct 2012 (pdf).

• "Campus Bridging Made Easy via Globus Services", Ian Foster, Rajkumar Kettimuthu, Stuart Martin, Steve Tuecke, Daniel Milroy, Brock Palen, Thomas Hauser and Jazcek Braden, Proceedings of the first Conference of the Extreme Science and Engineering Discovery Environment (XSEDE’12), Jul 2012 (pdf)

• "Instant GridFTP", Rajkumar Kettimuthu, Lukasz Lacinski, Michael Link, Karl Pickett, Steve Tuecke and Ian Foster, Proceedings of the Nineth High Performance Grid and Cloud Computing Workshop to be held in conjunction with International Parallel and Distributed Processing Symposium (IPDPS 2012), May 2012 (pdf)

• "End-To-End Solution for Integrated Workload and Data Management using glideinWMS and Globus Online," Parag Mhashilkar, Zachary Miller, Rajkumar Kettimuthu, Gabriele Garzoglio, Burt Holzman, Cathrin Weiss, Xi Duan, and Lukasz Lacinski, Proceedings of International Conference on Computing in High Energy and Nuclear Physics (CHEP), May 2012 (pdf)

• "Software as a Service for Data Scientists," Bryce Allen, John Bresnahan, Lisa Childers, Ian Foster, Gopi Kandaswamy, Rajkumar Kettimuthu, Jack Kordas, Michael Link, Stuart Martin, Karl Pickett and Steve Tuecke, Communications of the ACM, vol. 55, pp. 81-88, 2012 (pdf)

• "Globus XIO Pipe Open Driver: Enabling GridFTP to Leverage Standard Unix Tools", Rajkumar Kettimuthu, Steven Link, John Bresnahan, Michael Link, and Ian Foster, Proceedings of the 2011 TeraGrid Conference, Salt Lake City, UT, July 2011 (pdf)

• "FTProfiler: A New Profiling Tool for GridFTP Servers", Huong Luu, Rajkumar Kettimuthu, and Marianne Winslett, Proceedings of the 2011 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA 2011), July 2011 (pdf)

• "Moving Huge Scientific Datasers over the Internet", Wantao Liu, Brian Tieman, Rajkumar Kettimuthu, Ian Foster, Concurrency and Computation: Practice and Experience, 2011 (pdf)

• "Managed GridFTP", John Bresnahan, Michael Link, Rajkumar Kettimuthu, Ian Foster, Proceedings of the Eighth High Performance Grid and Cloud Computing Workshop held in conjunction with International Parallel and Distributed Processing Symposium (IPDPS 2011), May 2011 (pdf)

• "A Data Management Framework for Distributed Biomedical Research Environments", Rajkumar Kettimuthu, Robert Schuler, David Keator, Martin Feller, Dingying Wei, Michael Link, John Bresnahan, Lee Liming, Joseph Ames, Ann Chervenak, Ian Foster, Carl Kesselman, IEEE eScience Workshop on High-Performance Computing in the Life Sciences, Dec 2010 (pdf)

• "A Data Transfer Framework for Large-Scale Science Experiments", Wantao Liu, Brian Tieman, Rajkumar Kettimuthu, Ian Foster, 3rd International Workshop on Data Intensive Distributed Computing (DIDC 2010) in conjunction with 19th International Symposium on High Performance Distributed Computing (HPDC 2010), June 2010. (pdf)

• "Lessons learned from moving Earth System Grid data sets over a 20 Gbps wide-area network", Rajkumar Kettimuthu, Alex Sim, Dan Gunter, Bill Allcock, Peer-Timo Bremer, John Bresnahan, Andrew Cherry, Lisa Childers, Eli Dart, Ian Foster, Kevin Harms, Jason Hick, Jason Lee, Michael Link, Jeff Long, Keith Miller, Vijaya Natarajan, Valerio Pascucci, Ken Raffenetti, David Ressman, Dean Williams, Loren Wilson, Linda Winkler, Proceedings of the 19th ACM International Symposium on High Performance Distributed Computing (HPDC 2010), June 2010. (pdf)

• "High Performance Data Transfer in Grid Environment Using GridFTP over InfiniBand", Hari Subramoni, Ping Lai, Rajkumar Kettimuthu, Dhabaleswar Panda, Proceedings of the 10th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2010), May 2010. (pdf)

• "An Adaptive Strategy for Scheduling Data-Intensive Applications in Grid Environments", Wantao Liu, Rajkumar Kettimuthu, Bo Li, Ian Foster, Proceedings of 17th IEEE International Conference on Telecommunications - Networking and Internet Computing (ICT 2010), Apr 2010 (pdf)

• "GridFTP GUI: An Easy and Efficient Way to Transfer Data in Grid", Wantao Liu, Rajkumar Kettimuthu, Brian Tieman, Ravi Madduri, Bo Li and Ian Foster, Proceedings of the Third International Conference on Networks for Grid Applications (GridNets 2009), Sep 2009 (pdf)

• "DataMover: A Lightweight Extensible Data Movement Framework for Grid Environment", Liu Wantao, Rajkumar Kettimuthu and Ravi Madduri, Proceedings of the 2009 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA 2009), July 2009 (pdf)

• "GridFTP Multilinking", John Bresnahan, Michael Link, Rajkumar Kettimuthu and Ian Foster, Proceedings of the 2009 TeraGrid Conference, Arlington, VA, June 2009 (pdf)

• "UDT as an Alternative Transport Protocol for GridFTP", John Bresnahan, Michael Link, Rajkumar Kettimuthu and Ian Foster, Proceedings of the 7th International Workshop on Protocols for Future, Large-Scale and Diverse Network Transports (PFLDNeT 2009), Tokyo, Japan, May 2009 (pdf)

• "Communicating Security Assertions over the GridFTP Control Channel", Rajkumar Kettimuthu, Liu Wantao, Frank Siebenlist and Ian Foster, 4th IEEE International Conference on e-Science, Dec 2008 (pdf).

• "Using Overlays For Efficient Data Transfer Over Shared Wide-Area Networks", Gaurav Khanna, Umit Catalyurek, Tahsin Kurc, Rajkumar Kettimuthu, P. Sadayappan, Ian Foster and Joel Saltz, Proceedings of the 2008 ACM/IEEE conference on Supercomputing (SC'08), Nov 2008 (pdf)

• "Enabling Petascale Science: Data Management, Troubleshooting, and Scalable Science Services", Andrew Baranovski, Keith Beattie, Shishir Bharathi, Joshua Boverhof, John Bresnahan, Ann Chervenak, Ian Foster, Tim Freeman, Dan Gunter, Kate Keahey, Carl Kesselman, Rajkumar Kettimuthu, Nick Leroy, Michael Link, Miron Livny, Ravi Madduri, Gene Oleynik, Laura Pearlman, Robert Schuler and Brian Tierney, Journal of Physics: Conference Series, Volume 125, 2008. (Also appeared in Proceedings of SciDAC 2008 Conference, 13-17 July, 2008, Seattle, Washington, USA.) (pdf)

• "A GridFTP Transport Driver for Globus XIO", Rajkumar Kettimuthu, Liu Wantao, Joseph Link and John Bresnahan, Proceedings of the 2008 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA 2008), July 2008 (pdf)

• "Multi-Hop Path Splitting and Multi-Pathing Optimizations for Data Transfers over Shared Wide-Area Networks using GridFTP", Gaurav Khanna, Umit Catalyurek, Tahsin Kurc, Rajkumar Kettimuthu, P. Sadayappan, Joel Saltz and Ian Foster, Proceedings of the 17th IEEE International Symposium on High-Performance Distributed Computing (HPDC), June 2008 (pdf).

• "A POSIX-like Client Interface for GridFTP", Rajkumar Kettimuthu, Liu Wantao, John Bresnahan and Joseph Link, Proceedings of the 2008 TeraGrid Conference, June 2008 (pdf).

• "A Dynamic Scheduling Approach for Coordinated Wide-Area Data Transfers using GridFTP", Gaurav Khanna, Umit Catalyurek, Tahsin Kurc, Rajkumar Kettimuthu, P. Sadayappan and Joel Saltz, Proceedings of the 22nd IEEE International Parallel and Distributed Processing Symposium (IPDPS 2008), Apr 2008 (pdf)

• "Semantics-based Distributed I/O for mpiBLAST", Pavan Balaji, Wu-chun Feng, Jeremy Archuleta, Heshan Lin, Rajkumar Kettimuthu, Rajeev Thakur and Xiaosong Ma, Proceedings of the 13th ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming (PPoPP), Feb 2008 (pdf).

• "LEGS: A WSRF Service to Estimate Latency Between Arbitrary Hosts on the Internet", R. Vijayprasanth, R. Kavithaa and Rajkumar Kettimuthu, Proceedings of the 2007 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA 2007), June 2007 (pdf)

• "GridFTP Pipelining", John Bresnahan, Michael Link, Rajkumar Kettimuthu, Dan Fraser and Ian Foster, Proceedings of the 2007 TeraGrid Conference, June 2007 (pdf)

• "Harnessing Multicore Processors for High Speed Secure Transfer", John Bresnahan, Rajkumar Kettimuthu, Michael Link and Ian Foster, Proceedings of the 26th IEEE Infocom's High-Speed Networks Workshop, May 2007 (pdf)

• "GridCopy: Moving Data Fast on the Grid", Rajkumar Kettimuthu, William Allcock, Lee Liming, John-Paul Navarro and Ian Foster, Proceedings of the Fourth High Performance Grid Computing Workshop held in conjunction with International Parallel and Distributed Processing Symposium (IPDPS 2007), Mar 2007 (pdf)

• "XIOPerf: A Tool for Evaluating Network Protocols", John Bresnahan, Rajkumar Kettimuthu and Ian Foster, Proceedings of the Third International Workshop on Networks for Grid Applications (GridNets 2006), Oct 2006 (pdf)

• "The Globus Striped GridFTP Framework and Server", William Allcock, John Bresnahan, Rajkumar Kettimuthu, Michael Link, Catalin Dumitrescu, Ioan Raicu and Ian Foster, Proceedings of the 2005 ACM/IEEE conference on Supercomputing (SC'05), Nov 2005 (pdf)

• "Restricted Slow-Start for TCP", William Allcock, Sanjay Hegde and Rajkumar Kettimuthu, The 2005 IEEE International Conference on Cluster Computing 2005, Sep 2005. (ppt)

• "Globus Data Storage Interface (DSI) - Enabling Easy Access to Grid Datasets", Rajkumar Kettimuthu, Michael Link, John Bresnahan and William Allcock, First DIALOGUE Workshop: Applications-Driven Issues in Data Grids, August 2005. (pdf)

• "A Performance Study of Parallel FFT in Clos and Mesh Networks", Rajkumar Kettimuthu and Sankara Muthukrishnan, Proceedings of the 2005 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA 2005), June 2005 (pdf)

• "Is Bluetooth Suitable for Large-Scale Sensor Networks?", Rajkumar Kettimuthu and Sankara Muthukrishnan, Proceedings of the 2005 International Conference on Wireless Networks (ICWN 2005), June 2005 (pdf)

• "The Globus eXtensible Input/Output System (XIO): A protocol independent IO system for the Grid", William Allcock, John Bresnahan, Rajkumar Kettimuthu and Joseph Link, Proceedings of the Joint Workshop on High-Performance Grid Computing and High-Level Parallel Programming Models held in conjunction with International Parallel and Distributed Processing Symposium (IPDPS 2005), April 2005 (pdf)

• "Selective Preemption Strategies for Parallel Job Scheduling", Rajkumar Kettimuthu, Vijay Subramani, Srividya Srinivasan, Thiagaraja B. Gopalsamy, D. K. Panda and P. Sadayappan, International Journal of High Performance Computing and Networking, Vol. 3, Nos. 2/3, pp. 122-152, 2005 (pdf)

• "Improved Selective Acknowledgment Scheme for TCP", Rajkumar Kettimuthu and William Allcock, Proceedings of the 2004 International Conference on Internet Computing (IC 2004), June 2004 (pdf)

• "Grid-enabled particle physics event analysis: experiences using a 10 Gb, high-latency network for a high-energy physics application", William Allcock, John Bresnahan, Julian Bunn, Sanjay Hedge, Joe Insley, Rajkumar Kettimuthu, Harvey Nueuman, Tony Rimovsky, Conrad Steenberg and Linda Winkler, Future Generation Computer Systems (FGCS), Volume 19, Issue 6, Pages 983-997, August 2003 (Special Issue on 3rd biennial International Grid applications-driven testbed event, Amsterdam, The Netherlands, 23-26 Sep 2002) (pdf)

• "Scheduling of Parallel Jobs in a Heterogeneous Multi-Site Environment", Gerald Sabin, Rajkumar Kettimuthu, Arun Rajan and P. Sadayappan, Proceedings of 9th Workshop on Job Scheduling Strategies for Parallel Processing (JSSPP 2003), June 2003 (pdf)

• "Effective Selection of Partition Sizes for Moldable Scheduling of Parallel Jobs", Srividya Srinivasan, Vijay Subramani, Rajkumar Kettimuthu, Praveen Holenarsipur and P. Sadayappan, Proceedings of 9th International Conference on High Performance Computing, Dec 2002 (pdf)

• "Appropriateness of Transport Mechanisms in Data Grid Middleware", Rajkumar Kettimuthu, Sanjay Hegde, William E. Allcock and John Bresnahan, 15th Annual SuperComputing Conference (SC 2002), Nov 2002. (ppt)

• "Selective Buddy Allocation for Scheduling Parallel Jobs on Clusters", Vijay Subramani, Rajkumar Kettimuthu, Srividya Srinivasan, Jeanette Johnston and P. Sadayappan, Proceedings of IEEE International Conference on Cluster Computing (CLUSTER 2002), Sep 2002 (pdf)

• "Selective Preemption Strategies for Parallel Job Scheduling", Rajkumar Kettimuthu, Vijay Subramani, Srividya Srinivasan, Thiagaraja B. Gopalsamy, D. K. Panda and P. Sadayappan, Proceedings of the 2002 International Conference on Parallel Processing (ICPP 2002), August 2002 (pdf)

• "Characterization of Backfilling Strategies for Parallel Job Scheduling", Srividya Srinivasan, Rajkumar Kettimuthu, Vijay Subramani and P. Sadayappan, Proceedings of the 2002 International Workshops on Parallel Processing (held in conjunction with the 2002 International Conference on Parallel Processing, ICPP 2002), August 2002 (pdf)

• "Distributed Job Scheduling on Computational Grids using Multiple Simultaneous Requests", Vijay Subramani, Rajkumar Kettimuthu, Srividya Srinivasan and P. Sadayappan, Proceedings of 11th IEEE Symposium on High Performance Distributed Computing (HPDC 2002), July 2002 (pdf)

• "Selective Reservation Strategies for Backfill Job Scheduling", Srividya Srinivasan, Rajkumar Kettimuthu, Vijay Subramani and P. Sadayappan, Proceedings of 8th Workshop on Job Scheduling Strategies for Parallel Processing (JSSPP 2002), July 2002 (pdf)

Invited Paper

• "Globus GridFTP: What's New in 2007", John Bresnahan, Michael Link, Gaurav Khanna, Zulfikar Imani, Rajkumar Kettimuthu and Ian Foster, Proceedings of the First International Conference on Networks for Grid Applications (GridNets 2007), Oct 2007 (pdf)

Technical Reports

• "Reliable High-Performance Data Transfer via Globus Online," I. T. Foster, J. Boverhof, A. Chervenak, L. Childers, A. DeSchoen, G. Garzoglio, D. Gunter, B. Holzman, G. Kandaswamy, R. Kettimuthu, J. Kordas, M. Livny, S. Martin, P. Mhashilkar, Z. Miller. T. Samak, M.-H. Su, S. Tuecke, V. Venkataswamy, C. Ward, and C. Weiss, Preprint ANL/MCS-P1904-0611, June 2011

• "Enabling Petascale Data Movement and Analysis", Ian Foster, Ann Chervenak, Dan Gunter, Kate Keahey, Ravi Madduri, Raj Kettimuthu, Scientific Discovery through Advanced Computing (SciDAC) review, Winter 2009 (pdf)

• "Survey of Protocols and Mechanisms for Enhanced Transport over Long Fat Pipes", Eric He, Rajkumar Kettimuthu, Sanjay Hegde, Yunhong Gu, Michael Welzl, Pascale Primet, Jason Leigh and Chaoyue Xiong. Global Grid Forum White paper Draft (work in progress), Data Transport Research Group, 2003/2004 (pdf)

• "Selective Preemption Strategies for Parallel Job Scheduling", Rajkumar Kettimuthu. Master's Thesis, Department of Computer and Information Science, The Ohio State University, March 2003 (pdf)

• "An Evaluation of Preemption Strategies for Parallel Job Scheduling", Rajkumar Kettimuthu, Vijay Subramani, Srividya Srinivasan, Thiagaraja B. Gopalsamy, D.K. Panda, and P. Sadayappan. Technical Report OSU-CISRC-11/01-TR22, The Ohio State University, Nov 2001 (pdf)

Poster Presentations

• “Toward Characterization of Data Movement in Large-Scale Scientific Applications”, Jun Yi, Rajkumar Kettimuthu, and Venkat Vishwanath, 8th IEEE International Conference on eScience, Oct. 2012 (pdf).

• “Accelerating Data Movement to Support Lattice QCD Computations", Rajkumar Kettimuthu, et al., Lattice 2011 - International Symposium on Lattice Field Theory, Lake Tahoe, CA, Jul. 2011. (pdf)

• "Whole-body 3D imaging at cell resolutions to define the phenomic landscape for genes, chemicals and diseases", Keith Cheng, Xuying Xin, Stephen Peckins, Jean Copper, Jonathan Cheng, Darin Clark, Rajkumar Kettimuthu, Xianghui Xiao, Francesco De Carlo, Patrick La Riviere, Gordon Kindlmann, Jonathan Silverstein, Ian Foster, and Vijay Agarwala, Experimental Biology 2011, Apr 2011

• "High-throughput imaging, computation, morphometrics, and visualization for morphological phenomics", Keith Cheng, Xuying Xin, Steven Peckins, Jean Copper, Darin Clark, Donald Bigler, Rajkumar Kettimuthu, Xianghui Xiao, Francesco De Carlo, Patrick La Riviere, Gordon Kindlmann, Jonathan Silverstein, and Ian Foster, 4th Strategic Conference of Zebrafish Investigators, Asilomar, CA, January 29 – February 2, 2011 (ppt)

• "Performance Characterization of GridFTP on 10 Gigabit Networks Using Hosts with 10Gb Network Interface Cards", Jamie Schwettmann and Rajkumar Kettimuthu, Oklahoma Supercomputing Symposium, Oct 2009 (pdf)

• "A Characterization of Approaches to Parallel Job Scheduling", Gerald Sabin, Arun Rajan, Rajkumar Kettimuthu, and P. Sadayappan, Salishan Conference on High Speed Computing, 2003. (ppt)