Academic Department Faculty of Engineering University

Faculty Members

Computer Engineering

รศ.ดร.วรา วราวิทย์

Education
  • Iowa State University, Ames, Iowa, USA -- Ph.D. in Computer Engineering (Research Excellence Award), 1998.
  • Iowa State University, Ames, Iowa, USA -- M.S. in Computer Engineering, 1994.
  • King Mongkut’s Institute of Technology North Bangkok -- B. Eng. in Electrical Engineering, 1989.

Email: vara.v [at] eng [dot] kmutnb [dot] ac [dot] th,
varavithya [at] gmail [dot] com
Research Interests
Networking
High Performance Computing
Performance of Computer Systems
Software Engineering
Implementing Enterprise Systems
Assoc. Prof. Dr. Vara has been actively involved in high performance computing in Thailand. At the KMUTNB, the high performance computing group, under his supervision, pursues research problems in the areas of high performance computing, performance evaluation of computer systems. The current research work include the simulation of 10Gbps high speed backbone for research and education.
  • Journal Papers
  • Conference Papers
  • AWARDS
  • Activities
  1. Anunchai Assawamakin, Aupakit prueksaaroon, Supasak Kulawonganunchai, Philip James Shaw, Vara Varavithya, Taneth Ruangrajitpakorn, and Sissades Tongsima, "Biomarker Selection and Classification of “-omics” Data using a Two-step Bayes Classification Framework," Biomed Research International Volume 2013 (2013).
  2. Supakit Prueksaaroon, and Vara Varavithya, “A Framework for Management of Virtualization Cluster”, International Journal of Advancements in Computing Technology, 2012.
  3. Nattavut Keerativuttiumrong, Nachol Chaiyaratana and Vara Varavithya, "Multi-objective Co-operative Co-evolutionary Genetic Algorithm," in the Lecture Notes in Computer Sciences, Springer-Verlag, pp.~288--297, no.~2439, 2002.
  4. Vara Varavithya and Thongchai Thepuatrakul, "Ethernet-Based Interconnections for Massively Parallel Clusters," in the NECTEC Technical Journal, , vol.~II, no.~9, pp.~205--214, Nov-Feb 2001.
  5. Vara Varavithya and Putchong Uthayopas, "ThaiGrid: Architecture and Overview," in the NECTEC Technical Journal, vol.~II, no.~9, pp.~219--224, Nov-Feb 2001.
  6. J. Upadhyay, V. Varavithya, and P. Mohapatra, "A Traffic-Balanced Adaptive Wormhole Routing Scheme for Two Dimensional Meshes," in the IEEE Transaction on Computers, vol. 46, no. 2, February, 1997.
  7. V. Varavithya and P. Mohapatra, "Tree-Based Multicasting on Wormhole Routed Multistage Interconnection Networks," in the IEEE Transactions on Parallel and Distributed Systems, pp. 1159-1178, November 1999.
  1. Nuttapong Chakthranont, Nachol Vhaiyaratana, and Vara Varavithya, “Cloud Services for a Statistical Approach to Genome-Wide Association Studies,” in the proceeding of the 18th Annual Internaational Symposium on Computational Science and Engineering (ANSCSE), 2014.
  2. Phonlawat khunphet, Nachol Vhaiyaratana, and Vara Varavithya, “Cloud Services for Benchmarking Algorithms in Genetic Association Studies,” in the proceeding of the 18th Annual Internaational Symposium on Computational Science and Engineering (ANSCSE), 2014.
  3. Tammatisthan Jaengchuea and Vara Varavithya, “Deployment Approaches of a Software Defined Network on the UniNet: Applications for High Performance Computing,” in the proceeding of the 18th Annual Internaational Symposium on Computational Science and Engineering (ANSCSE), 2014.
  4. Naruedom Dolprasit, Vara Varavithya, and Sayan Phosuwan, "Rural School Server Implementation Based on Cloud Enabling Technologies," Rural ICT Development (RICTD) International Conference 2013, Malacca, Malaysia, 25 - 27 June 2013.
  5. Nuttapong Chakthranont, Supakit Prueksaaroon,and Vara Varavithya,"Cloud Instances Management Framework," in the proceeding of the 17th Annual Internaational Symposium on Computational Science and Engineering (ANSCSE), 2013.
  6. Phonlawat Khunphet, Supakit Prueksaaroon,and Vara Varavithya," Unicloud: Distributed Cloud Service over Uninet Network," in the proceeding of the 17th Annual Internaational Symposium on Computational Science and Engineering (ANSCSE), 2013.
  7. Tammatisthan Jaengchuea, Supakit Prueksaaroon, and Vara Varavithya," A Performance Analysis of Nested Virtualization for Scientific Cloud Computing," in the proceeding of the 17th Annual Internaational Symposium on Computational Science and Engineering (ANSCSE), 2013.
  8. Thadthai Szeto and Vara Varavithya, “Parallel File Transfers for HPC Applications in the Uninet2 Environment," in the proceeding of the 16th Annual Internaational Symposium on Computational Science and Engineering (ANSCSE), 2012.
  9. Anupong Banjongkan, Supakit Prueksaaroon, and Vara Varavithya, "Modeling and Simulation of Grid Computing Based on Uninet1 and Uninet2 by gridsim toolkit," in the proceeding of the 15th Annual Internaational Symposium on Computational Science and Engineering (ANSCSE), bangkok university, Thailand, 2011.
  10. Anupong Banjongkan, Supakit Prueksaaroon, and Vara Varavithya, "HPC Resource Placements Based on the Uninet Environment," Thailand Grid and Cluster Computing Conference (TGCC), 2011.
  11. Supakit Prueksaaroon, Kosin Kaewnuna, and Vara Varavithya, "Hybrid- Nested Virtualization for Large-Scale Server Consolidation," in the proceeding of the International Computer Science and Engineering Conference (ICSEC), 2011.
  12. Anupong Banjongkan, Supakit Prueksaaroon, Vara Varavithya, and Sornthep Vannarat, "Simulation Modeling of Large-scale Virtualization based on the CloudSim Toolkit," in the proceeding of the 14th Annual National Symposium on Computational Science and Engineering, Mae Fah Luang University, Chiang Rai, 2010.
  13. Supakit Prueksaaroon, Vara Varavithya, and Sornthep Vannarat, "An Implementation of Virtualization Cluster: Extending Beowulf Cluster using Virtualization Cluster Management and Image Storage," 2009 6th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, pp. 700-703, 2009.
  14. Vara Varavithya, "A Framework for Re-engineering Legacy Web Based Applications," in the proceeding of the 6th International Joint Conference on Computer Science and Software Engineering (JCSSE), pp. 417-422, 2009.
  15. Kosin Keawnuna, Wittaya Konghaped, Supakit Prueksaaroon, Vara Varavithya, and Sornthep Vannarat, “Performance Comparison of OS-Level Virtualization and Para-Virtualization," in the proceeding of the National Computer Science and Engineering Conference (NCSEC), 2008.
  16. Anupong Bangchongkarn, Wittaya Konghaped, Supakit Prueksaaroon, Vara Varavithya, and Sornthep Vannarat, “Preliminary Study of Xen Live Migration: Effects of Problem Size in HPC Applications," in the proceeding of the National Computer Science and Engineering Conference (NCSEC), 2008.
  17. Polrid Pananusorn and Vara Varavithya, “Improvement of MANET Routing Protocol using Congestion Avoidance for Video Streaming ," in the proceeding of the National Computer Science and Engineering Conference (NCSEC), 2008.
  18. Yootapong Chaiyorost and Vara Varavithya, "3-Party Authorization for Medical Grid in Medical Image Area," in the Proceeding of the Thai Grid and Cluster Computing Conference (TGCC), August 2008.
  19. Wittaya Konghaped, Supakit Prueksaaroon, Vara Varavithya, and Sornthep Vannarat, “Performance Evaluation of Intel Virtualization Technology on Standard Benchmarks,” in the proceeding of the twelfth Annual National Symposium on Computational Science and Engineering (ANSCSE 12), 2008.
  20. Kamol Julkiwattananukul and Vara Varavithya, “A Case Study of Grid Enable Finite Element Calculation Services: Electromagnetic Calculations,” International Workshop on Advanced Computing and Application (ACOMP), pp. 149-156, 2008.
  21. Supakit Prueksaaroon, Vara Varavithya, and Sornthep Vannarat, “Performance Experiments of the Xen Virtualization on a Set of Selected Benchmarks for Enterprise Deployments,” International Workshop on Advanced Computing and Application (ACOMP), pp. 295-302, 2008.
  22. Surin Petchmunee and Vara Varavithya, “A Framework for Practical Workshop Skill Development in Engineering Curriculum,” Thailand Engineering Education Conference, 2008. Supachai Kunasantiworakul, Kamol Julkiwattananukul, and Vara Varavithya, “Grid-enable iMOOSE Simulation Front-end for Switched Reluctance Motors,” Thailand Grid and Cluster
  23. Computing Conference (TGCC), 2007. Supakit Prueksaaroon, Vara Varavithya, and Sornthep Vannarat, “Implementation of Virtualization Cluster and Grid based on Xen, ROCKS, and ThaiGrid Roll,” Thailand Grid and Cluster Computing Conference (TGCC), 2007. Sumate Limpurogenaong, Vara Varavithya, and Kanokvate Tangpiolrat, “SRM Analysis using Finite Element Method: iMOOSE Simulation Platform,” in the proceeding of the National Electrical Engineering Conference (EECON 30), 2007.
  24. Putchong Uthayopas and Vara Varavithya, "Architecture and Software Designs for the Thai National Grid Infrastructure," in the proceeding of the National Computer Sciences and Engineering Conference (NCSEC), 2006. Polrid Pananusorn and Vara Varavithya, "Performance Comparisons of MANET Routing Protocols for Multiple Sources Video Streaming Applications," in the proceeding of the National Computer Science and Engineering Conference (NCSEC), 2006.
  25. Kamol Jutiwattananukul and Vara Varavithya, "Enabling Grid Computing Capabilities in Engineering Applications: Finite Element Calculations," in the proceeding of the National Computer Science and Engineering Conference (NCSEC), 2006.
  26. Vara Varavithya and Putchong Uthayopas, "Design Considerations in Building Terascale Cluster Computing Systems," in the proceeding of the National Computer Science and Engineering Conference (NCSEC), 2005.
  27. Wisan Watcharinporn and Vara Varavithya, "Improvement of a Congestion Control Algorithm in Mobile Ad-hoc Networks," in the proceeding of the National Computer Science and Engineering Conference (NCSEC), 2005. Suriya Urueakoran and Vara Varavithya, "Small Community Access Right Delegation Protocol for Grid Enable Infrastructure," in the proceeding of the National Computer Science and Engineering Conference (NCSEC), 2005.
  28. Polrid Pananusorn and Vara Varavithya, "A Real World Performance Comparison of Routing Protocols in MANET," in the proceeding of the National Electrical Engineering Conference, EECON-28, 2005. Supada Laosooksathit, Vara Varavithya, and Nachol Chaiyaratana, "Ant Colony with Event Flooding in Sensor Networks: Forest Fire Detection," in the proceeding of the National Electrical Engineering Conference, EECON 28, 2005.
  29. Suphat Pongdech and Vara Varavithya, "A Fast Response Congestion Control Technique for Multicast Communication," in the proceeding of the National Electrical Engineering Conference, EECON 27, 2004. Kotchakorn Maksuriwong, Vara Varavithya, and Nachol Chaiyaratana, "Wireless LAN Access Point Placement using Multiobjective Genetic Algorithm," in the proceeding of the IEEE International Conference on Systems, Man & Cybernetics, October, 2003.
  30. Chumpol Ngamphiw, Vara Varavithya, and Srawut Kleesuwan, "Parallel Finite Element Problem Solving using High Performance Computation Libraries," in the proceeding of the Seventh Annual National Symposium on Computational Science and Engineering, Bangkok, 2003.
  31. Supakit Prueksaaroon and Vara Varavithya, "Basic Computation Service Framework on Grid for High Performance Computing," in the proceeding of the National Computer Science and Engineering Conference (NCSEC), 2002.
  32. Panya Thanyaprasertkul and Vara Varavithya, "Taupoon: A Fast Response Congestion Avoidance Strategy for TCP," in the proceeding of the National Computer Science and Engineering Conference (NCSEC), 2002.
  33. Kotchakorn Maksuriwong, Vara Varavithya, and Nachol Chaiyaratana, "IEEE 802.11 Wireless LAN Cell Planning using Genetic Algorithm," in the proceeding of the National Electrical Engineering Conference, EECON 25, 2002.
  34. Nattavut Keerativuttitumrong, Nachol Chaiyaratana, and Vara Varavithya, "Parallel Implemetation of Multi-objective Co-operative Co-evolutionary Genetic Algorithm," in the proceeding of the National Electrical Engineering Conference, EECON 25, 2002.
  35. Nattavut Keerativuttitumrong, Nachol Chaiyaratana, and Vara Varavithya, "Multi-objective Co-operative Co-evolutionary Genetic Algorithm," in the proceeding of the Seventh International Conference on Parallel Problem Solving from Nature, PPSN VII, Granada, Spain, September, 2002.
  36. Jirasak Lapanalarploy and Vara Varavithya, "Process-Oriented Simulation of Distributed WWW Servers using CSIM," in the proceeding of the National Electrical Engineering Conference, EECON-24, Bangkok, 2001.
  37. Vara Varavithya and Thongchai Thepuatrakul, "Ethernet-Based Interconnections for Massively Parallel Clusters," in the proceeding of the First South East Asia Conference on High Performance Computing, Kasetsart University, Bangkok, 2001.Vara Varavithya and Putchong Uthayopas, "ThaiGrid: Architecture and Overview," in the proceeding of the First South East Asia Conference on High Performance Computing, Kasetsart University, Bangkok, 2001.
  38. Jirasak Lapanalarploy and Vara Varavithya "Geographically Distributed Web Servers under Limited Network Bandwidth," in the proceeding of the Fifth Annual National Symposium on Computational Science and Engineering, pp. 417-426, Bangkok, 2001.
  39. Vara Varavithya and Putchong Uthayopas "ThaiGrid: Preliminary Studies on Thai's High Performance Computing Infrastructure," in the proceeding of the Fifth Annual National Symposium on Computational Science and Engineering, pp. 436-443, Bangkok, 2001.
  40. Tanarat Kunchone and Vara Varavithya, "The Development of Mosaic Pictures using Discrete Cosine Transform," in the proceeding of the National Electrical Engineering Conference, EECON-23, Chiangmai, 2000.
  41. Vara Varavithya and Thongchai Thepuatrakul, "A High Bandwidth Ethernet Topology for Large Scale Clusters," in the proceeding of the National Electrical Engineering Conference, EECON-23, Chiangmai, 2000. (Best Paper Award in Computer Engineering)
  42. Vara Varavithya, Pitsanu Lousangfa, and Chumpol Ngamphiw, "Effects of Network Configurations on Performance of Beowulf-class Clusters," in the proceeding of the National Electrical Engineering Conference, EECON-23, Chiangmai, 2000.
  43. V. Varavithya and P. Mohapatra, "Tree-Based Multicasting on Wormhole Routed Multistage Interconnection Networks," in the proceeding of the 26th International Conference on Parallel Processing (ICPP), pp. 203-206, Bloomingdale, IL, August 1997.
  44. P. Mohapatra and V. Varavithya, "A Hardware Multicast Routing Algorithm for Two - Dimensional Meshes," in the proceeding of the Eighth IEEE Symposium on Parallel and Distributed Processing, pp. 198-205, News Orleans, October 1996.
  45. V. Varavithya and P. Mohapatra, "A Multicast Routing Algorithm for Wormhole Routed Two - Dimensional Meshes," in the proceeding of the Fifth Midwest Electrotechnology Conference, Ames, IA, 1996.
  46. V. Varavithya, J. Upadhyay, and P. Mohapatra, "An Efficient Fault-Tolerant Routing Scheme for Two - Dimensional Meshes," in the proceeding of the International Conference of High Performance Computing, New Delhi, India, pp. 773-778, December 1995.
  47. J. Upadhyay, V. Varavithya, and P. Mohapatra, "Routing Algorithms for Torus Networks," in the proceeding of the International Conference of High Performance Computing, New Delhi, India, pp. 743-748, December 1995.
  48. J. Upadhyay, V. Varavithya, and P. Mohapatra, "Efficient and Balanced Adaptive Routing in Two Dimensional Meshes," in the proceeding of the IEEE International Symposium on High Performance Computer Architecture, Raleigh, North Carolina, pp. 112-121, January 1995.
  • KMITNB’S INNOVATION AWARD (SOFTWARE), 2000
  • EECON-23’S BEST PAPER AWARD, 2000
  • RESEARCH EXCELLENCE AWARD, IOWA STATE UNIVERSITY, 1998
  • INDUSTRIAL RELATION, THAILAND ROBOTIC SOCIETY, 2010
  • GENERAL SECRETARY: ECTI-CON 2009
  • VICE PRESIDENT: THAILAND EMBEDDED SYSTEM ASSOCIATION, 2007
  • GENERAL CO-CHAIR: NATIONAL COMPUTER SCIENCE AND ENGINEERING CONFERENCE, 2008
  • SECOND GENERATION UNINET PROCUREMENT COMMITTEE: RESEARCH AND EDUCATION NETWORK, OFFICE OF HIGHER COMMISSION
  • SOFTWARE INDUSTRY INCUBATION CENTER SUBCOMMITTEE: SOFTWARE INDUSTRY PROMOTION AGENCY
  • INFORMATION TECHNOLOGY ADVISOR: COUNCIL OF ENGINEER
  • HONORABLE ADVISOR: SOFTWARE INDUSTRY PROMOTION AGENCY
  • SOFTWARE PROCESS IMPROVEMENT (SPISE): PARTICIPATION ADVISOR, SOFTWARE PARK THAILAND, NSTDA
  • EXECUTIVE BOARD MEMBER: THAI NATIONAL GRID PROJECT
  • CO-CHAIR: THAILAND GRID COMPUTING CONFERENCE (TGCC) 2008, 2007, 2006, 2005
  • STEERING COMMITTEE MEMBER: THAI NATIONAL GRID PROJECT
  • EXECUTIVE BOARD MEMBER: LAMPANG INTER-TECH COLLEGE
  • PROGRAM COMMITTEE: NATIONAL COMPUTER SCIENCE AND ENGINEERING CONFERENCE (NCSEC)
  • PROGRAM COMMITTEE: ANNUAL NATIONAL SYMPOSIUM ON COMPUTATIONAL SCIENCE AND ENGINEERING (ANSCSE)
  • PARTICIPATE IN ORGANIZING SEVERAL STUDENT’S ROBOT ACTIVITIES IN THAILAND
  • CO-CHAIR: THAILAND GRID AND CLUSTER COMPUTING CONFERENCE 2004 AND 2005.
  • REFEREE: IEEE TRANSACTION ON COMPUTERS, IEEE TRANSACTION ON PARALLEL AND DISTRIBUTED SYSTEMS, COMPUTER JOURNAL

Teaching Subjects

Computer Networks

Performance Evaluation

Parallel Computing

Computer Programming Fundamental