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Rema Resume

Rema Hariharan
Rema Hariharan

Dr. Rema Hariharan has over 20 years of experience in performance analysis, optimization, and workload modeling. She has expertise in operations research, statistics, supply chain analysis, and credit management analysis. She has held leadership roles in key industry committees and conferences. Dr. Hariharan has a Ph.D. in Operations Research and has worked at AMD, Sun Microsystems, AT&T Bell Labs, and AT&T Labs conducting performance analysis, benchmarking, workload profiling, and more. She has authored several publications in her areas of expertise.

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DR. REMA HARIHARAN Rema.hariharan@gmail.com, Phone: 512-426-6532 Summary profile 20 years of work experience with expertise in: Optimization, workload analysis, performance analysis, benchmarking Operations Research and Statistics Modeling and performance optimization Supply chain analysis, Credit Management Analysis Elected by SPEC to lead key committees: Chairperson person for Cloud sub-committee (2010-2012) Vice-Chair of Open System Steering Committee (2009-2012) Chairperson person for OSG web committee (2007-2010) Strong academic network aimed at sustained innovation Invited to be program chair and conference coordinator for ICPE, SIPEW Extensively refereed papers (~150) for conferences & journals in the areas of Performance Analysis and Benchmarking) over 17 years Education University of North Carolina Ph.D., Thesis area: Queuing Control, Operations Research, 1991 GPA 4.0/4.0 Virginia Tech M.S., Operations Research, Thesis area: Scheduling, 1988 GPA 4.0/4.0 Indian Inst. of Technology, Bombay B.Tech., Mechanical Engineering, 1986 GPA 8.0/10.0 Work Experience AMD (2007 - current): Senior Member Technical Staff Expertise: Performance analysis, Benchmarking, Workload tuning, Tracing of workloads, Big Data Workload Analysis of Big Data and Hadoop workloads: Determined a smaller set of workloads to trace using hardware usage characteristics, reducing number of workloads to trace to 1/10tth of what was originally proposed Chair of the Cloud Working group at SPEC: Initiated idea to form working group and lead ~7-10 company representatives to align on metrics for Cloud and cloud workloads to use in the standard benchmark Memcached performance: Formulated new approach (virtualization) to running Memcached resulting in 4x performance improvement. Identified issues at network driver level that was impacting maximum utilization of the processors. Chairperson of the osgweb sub-committee o Drove the development of the benchmarks SPECweb2009 and SPECweb2005 point releases o PHP workload analysis o Power adaptation of the SPECweb workload Appointed as lead AMD representative to SPEC consortium and elected as Vice-chair of OSG steering committee Web Performance Lead at AMD
Sun Microsystems (2000-2007): Performance Analysis Staff Engineer Expertise: Workload Profiling, Analysis and workload definitions for systems SPECweb2005 Benchmark design and analysis - Key contributor o Established novel framework for dynamic web workloads to represent distinct customer segments o Directed team efforts to code the PHP scripts for SPECweb2005 Reviewed and defended Sun's benchmark submissions: Liaised with cross- functional product and marketing teams in support of ~35-40 web-server and hardware product launches Cluster Analysis of benchmarks and workloads: Pioneered novel methodology (Principal component based analysis) to enable simplified tuning procedures for customer support Emerging Workloads Definition for Performance Strategic Workgroup: Worked with cross-functional teams (Engineering, Marketing and Strategy) to identify future workloads Analyzed the performance of SunOne web-server using SES workbench Telco Benchmark development: SPECSIP prototyping on FABAN AT&T Bell Labs/AT&T Labs (1991-2000) * Network Design and Performance Analysis (1995-2000), Senior Technical Staff Member Areas of Expertise: Software Architecture and Performance Analysis, Analysis of Java Based Software, web servers and other custom software, Protocol Analysis. Multicasting protocol optimization: Optimized protocols used by AT&T billing using modeling and evaluation of multicasting protocol to meet stringent reliability requirements (1 in 10 Billion) Performance analysis of Internet services: Designed internal benchmarking process to determine the performance of Internet phone Service and Texting services Webserver performance analysis: Developed novel analytical and simulation model (US Patent 6789050) to evaluate performance of complex web server models * Operations Research, (1991-1995), Member of Technical Staff Areas of Expertise: Inventory Management, Development of optimization models, Credit Management, Regression Analysis Inventory control: Initiated inventory control policies for Business units resulting in $8-$15 M/yr savings Credit management: Designed algorithms that were used by AT&T credit management to reduce delinquent amounts by $5M+/year. The University of North Carolina, Department of Operations Research (1988-1991) Developed a simulations test bed for IBMs Data Network Developed Routing Algorithms in a Virtual Circuit network. Publications Hariharan, R. Scaling Memcached, paper presentation at VMworld 2011. Hariharan, R. and Sun, N., Workload Characterization of SPECweb2005, Proceedings of the SPEC workshop, January, 2006.
Hariharan, R., and Weber, S., Workload generation method for a Banking application", published in the proceedings of ISPASS 2003. Hariharan, R., Ehrlich, W., Reeser, P., Van-der-mei, R. Modeling the Performance of Web servers Engaged in Object-Oriented Computing, presented at Plenary session in ITC-2001. Reeser, P., Van der mei,. R., and Hariharan R., An Analytic Model of a Web Server, ITC 1999. Hariharan, R., Reeser P., and Van der mei R., A Web Server Performance Model, Telecommunications Systems 16, 2001, pp. 361-37 Hariharan, R., Mostafa M. and Stidham, S. , Scheduling in a Multi-class Queueing Network, Invited Paper, QUESTA, vol 24, 1996, pp 83-99. Hariharan, R, Kulkarni V, and Stidham, S., Optimal Control of Two Infinite Server Queues, Proceeding of the 29th Conference on Decision Control, Vol 29, pp 1329-1335. Hariharan, R., and Zipkin, P. Customer-Order Information, Leadtimes and Inventories, Management Science, October 1995. Hariharan, R., Kulkarni, V.G. and Stidham, S. Routing to two parallel Infinite Server Queues, IEEE conference Proceedings, 1990. Hariharan, R and Sarin, S, Two Machine bi-criteria Scheduling Problem, International Journal of Production Economics, vol.. 65. no. 2, pp 125-139, 2000. Invited Presentations Organized an invited session Web Server Performance, at INFORMS, Fall 1999. University of North Carolina, Performance Analysis of RMTP, 1996 University of North Carolina, OR Applications in the Telecomm. Industry, 1993 Columbia University, Full-Stream Inventory Analysis, 1993 Organized and invited session on OR in Telecommunication, at INFORMS, 1992. Organizational and Referee Experience Program Committee member and Poster Session Chair for ICPE 2011, Karlsruhe, Germany. Program Committee member of SIPEW workshop, San Jose, CA, 2010 Program and Organizing Committee member for SPEC workshop 2008 ISPASS Program committee member, ISPASS 2005. Organized an invited session on Web Server Performance, at INFORMS, Fall 1999 Invited referee: Several papers for IEEE conferences and journals on performance, QUESTA and Management Science Chair, AT&T Performance Symposium, Middletown, NJ (1998). Lead Coordinator, Asian American Cultural, Holmdel, NJ (1993). Other Organizations Experiences * Secretary and Counselor, Manavi (a South Asian Womens non-profit organization that tackles issues related to domestic violence): Counseled women of South Asian origin in domestic violence situations providing them directions for their future including referrals and translation help with police, 1993-1998. * Indian classical music enthusiast; regular volunteer for Indian Fine Arts Organization in Austin.

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Rema Resume

  • 1. DR. REMA HARIHARAN Rema.hariharan@gmail.com, Phone: 512-426-6532 Summary profile 20 years of work experience with expertise in: Optimization, workload analysis, performance analysis, benchmarking Operations Research and Statistics Modeling and performance optimization Supply chain analysis, Credit Management Analysis Elected by SPEC to lead key committees: Chairperson person for Cloud sub-committee (2010-2012) Vice-Chair of Open System Steering Committee (2009-2012) Chairperson person for OSG web committee (2007-2010) Strong academic network aimed at sustained innovation Invited to be program chair and conference coordinator for ICPE, SIPEW Extensively refereed papers (~150) for conferences & journals in the areas of Performance Analysis and Benchmarking) over 17 years Education University of North Carolina Ph.D., Thesis area: Queuing Control, Operations Research, 1991 GPA 4.0/4.0 Virginia Tech M.S., Operations Research, Thesis area: Scheduling, 1988 GPA 4.0/4.0 Indian Inst. of Technology, Bombay B.Tech., Mechanical Engineering, 1986 GPA 8.0/10.0 Work Experience AMD (2007 - current): Senior Member Technical Staff Expertise: Performance analysis, Benchmarking, Workload tuning, Tracing of workloads, Big Data Workload Analysis of Big Data and Hadoop workloads: Determined a smaller set of workloads to trace using hardware usage characteristics, reducing number of workloads to trace to 1/10tth of what was originally proposed Chair of the Cloud Working group at SPEC: Initiated idea to form working group and lead ~7-10 company representatives to align on metrics for Cloud and cloud workloads to use in the standard benchmark Memcached performance: Formulated new approach (virtualization) to running Memcached resulting in 4x performance improvement. Identified issues at network driver level that was impacting maximum utilization of the processors. Chairperson of the osgweb sub-committee o Drove the development of the benchmarks SPECweb2009 and SPECweb2005 point releases o PHP workload analysis o Power adaptation of the SPECweb workload Appointed as lead AMD representative to SPEC consortium and elected as Vice-chair of OSG steering committee Web Performance Lead at AMD
  • 2. Sun Microsystems (2000-2007): Performance Analysis Staff Engineer Expertise: Workload Profiling, Analysis and workload definitions for systems SPECweb2005 Benchmark design and analysis - Key contributor o Established novel framework for dynamic web workloads to represent distinct customer segments o Directed team efforts to code the PHP scripts for SPECweb2005 Reviewed and defended Sun's benchmark submissions: Liaised with cross- functional product and marketing teams in support of ~35-40 web-server and hardware product launches Cluster Analysis of benchmarks and workloads: Pioneered novel methodology (Principal component based analysis) to enable simplified tuning procedures for customer support Emerging Workloads Definition for Performance Strategic Workgroup: Worked with cross-functional teams (Engineering, Marketing and Strategy) to identify future workloads Analyzed the performance of SunOne web-server using SES workbench Telco Benchmark development: SPECSIP prototyping on FABAN AT&T Bell Labs/AT&T Labs (1991-2000) * Network Design and Performance Analysis (1995-2000), Senior Technical Staff Member Areas of Expertise: Software Architecture and Performance Analysis, Analysis of Java Based Software, web servers and other custom software, Protocol Analysis. Multicasting protocol optimization: Optimized protocols used by AT&T billing using modeling and evaluation of multicasting protocol to meet stringent reliability requirements (1 in 10 Billion) Performance analysis of Internet services: Designed internal benchmarking process to determine the performance of Internet phone Service and Texting services Webserver performance analysis: Developed novel analytical and simulation model (US Patent 6789050) to evaluate performance of complex web server models * Operations Research, (1991-1995), Member of Technical Staff Areas of Expertise: Inventory Management, Development of optimization models, Credit Management, Regression Analysis Inventory control: Initiated inventory control policies for Business units resulting in $8-$15 M/yr savings Credit management: Designed algorithms that were used by AT&T credit management to reduce delinquent amounts by $5M+/year. The University of North Carolina, Department of Operations Research (1988-1991) Developed a simulations test bed for IBMs Data Network Developed Routing Algorithms in a Virtual Circuit network. Publications Hariharan, R. Scaling Memcached, paper presentation at VMworld 2011. Hariharan, R. and Sun, N., Workload Characterization of SPECweb2005, Proceedings of the SPEC workshop, January, 2006.
  • 3. Hariharan, R., and Weber, S., Workload generation method for a Banking application", published in the proceedings of ISPASS 2003. Hariharan, R., Ehrlich, W., Reeser, P., Van-der-mei, R. Modeling the Performance of Web servers Engaged in Object-Oriented Computing, presented at Plenary session in ITC-2001. Reeser, P., Van der mei,. R., and Hariharan R., An Analytic Model of a Web Server, ITC 1999. Hariharan, R., Reeser P., and Van der mei R., A Web Server Performance Model, Telecommunications Systems 16, 2001, pp. 361-37 Hariharan, R., Mostafa M. and Stidham, S. , Scheduling in a Multi-class Queueing Network, Invited Paper, QUESTA, vol 24, 1996, pp 83-99. Hariharan, R, Kulkarni V, and Stidham, S., Optimal Control of Two Infinite Server Queues, Proceeding of the 29th Conference on Decision Control, Vol 29, pp 1329-1335. Hariharan, R., and Zipkin, P. Customer-Order Information, Leadtimes and Inventories, Management Science, October 1995. Hariharan, R., Kulkarni, V.G. and Stidham, S. Routing to two parallel Infinite Server Queues, IEEE conference Proceedings, 1990. Hariharan, R and Sarin, S, Two Machine bi-criteria Scheduling Problem, International Journal of Production Economics, vol.. 65. no. 2, pp 125-139, 2000. Invited Presentations Organized an invited session Web Server Performance, at INFORMS, Fall 1999. University of North Carolina, Performance Analysis of RMTP, 1996 University of North Carolina, OR Applications in the Telecomm. Industry, 1993 Columbia University, Full-Stream Inventory Analysis, 1993 Organized and invited session on OR in Telecommunication, at INFORMS, 1992. Organizational and Referee Experience Program Committee member and Poster Session Chair for ICPE 2011, Karlsruhe, Germany. Program Committee member of SIPEW workshop, San Jose, CA, 2010 Program and Organizing Committee member for SPEC workshop 2008 ISPASS Program committee member, ISPASS 2005. Organized an invited session on Web Server Performance, at INFORMS, Fall 1999 Invited referee: Several papers for IEEE conferences and journals on performance, QUESTA and Management Science Chair, AT&T Performance Symposium, Middletown, NJ (1998). Lead Coordinator, Asian American Cultural, Holmdel, NJ (1993). Other Organizations Experiences * Secretary and Counselor, Manavi (a South Asian Womens non-profit organization that tackles issues related to domestic violence): Counseled women of South Asian origin in domestic violence situations providing them directions for their future including referrals and translation help with police, 1993-1998. * Indian classical music enthusiast; regular volunteer for Indian Fine Arts Organization in Austin.