Toyotaro Suzumura (鈴村豊太郎)  Toyotaro Suzumura (鈴村豊太郎) photo       

contact information

Research Scientist
IBM Research


Professional Associations

Professional Associations:  ACM  |  IEEE Member


Toyotaro Suzumura received his Ph.D. in Computer Science from Tokyo Institute of Technology in 2004 mainly focusing on Grid computing and distributed systems mainly supervised by Prof. Satoshi Matsuoka. He published top-tier international conferences such as ACM/IEEE Supercomputing and IPDPS during his Ph.D, and also spent part of his Ph.D. research activities in San Diego Supercomputing Center, eXtreme Scale Computing led by Prof. Dennis Gannon, and Innovation Computing Laboratory led by Prof. Jack Dongarra. He joined IBM Research - Tokyo in 2004 and had involved with several projects such as high performance XML processing, the PHP scripting language, stream computing, the X10 programming language and so forth. Since 2010, he has started to develop an X10-based billion-scale agent simulation platform on highly distributed systems and its application to large-scale traffic simulation. He has also explored billion-scale large scale analytics and been leading an open source graph library called ScaleGraph ( and also continuously achieves 3rd or 4th place in the big graph processing competition called Graph500. He also had taken a role of a visiting associate professor at the Graduate School of Information Science and Engineering of Tokyo Institute of Technology since April 2009 for almost 5 years and supervised 16 students including 3 Ph.D. students. Since April, 2013, He also serves as a visiting associate professor at University College Dublin, Ireland supervising 6 master students and 1 Ph.D. student so far. He has published 50 reviewed paper for international conferences and workshops, 41 domestic conferences, and 12 international patents. He is now a co-principal investigator for two Japanese government projects called "JST CREST" by leading both large-scale graph analytics and billion-scale agent simulation towards exa-scale computing environment. 

  • 2013/10 - current : Research Scientist,  IBM Research, Dublin (as an international assignee), Big Data Team and Smarter Cities Technology Centre
  • 2013/04 - current : Visiting Associate Professor, University College Dublin (URL)
  • 2004/04 - current : Research Scientist,  IBM Research, Tokyo
  • 2009/04 - 2013/09 : Visiting Associate Professor, Tokyo Institute of Technology, Tokyo, Japan
    • A founder for my own lab "Suzumura Laboratory" supervising 16 students including 2 Ph.D. students
    • A project leader for the ScaleGraph project - an open source large-scale graph processing system (
Research Directors 
  • University Research Director, "Large-scale graph processing system", JST (Japan Science Foundation) CREST 
  • University Research Director, "Extremely Big Data Processing", JST (Japan Science Foundation) CREST 
  • Project Leader : ScaleGraph - An open source large-scale graph processing system (URL:
International Conference Program Committees / Chairs
  • Graph500 Steering Committee Member (since 2012) (URL)
  • IEEE IPDPS 2015, Program Committee Member, 29th IEEE International Parallel & Distributed Processing Symposium
  • ACM/IEEE Cluster 2015, Program Committee Member 
  • ACM/IEEE Supercomputing 2014, Program Committee Member (URL
  • ACM WWW 2014 (World Wide Web) LSNA (Large-Scale Network Analysis) Workshop,Workshop Chair
  • Winter Simulation Conference 2014, Program Committee Member
  • IEEE/ACM DS-RT 2014, Technical Program Committee Member
  • IEEE ICWS 2014 (International Conference on Web Services), Program Committee Member 
  • IEEE CLOUD 2014, Program Committee Member 
  • IEEE PDSEC co-located at IPDPS 2014, Program Committee Member 
  • IEEE BigData 2013, Program Committee Member
  • IEEE CLOUD 2013, Program Committee Member
  • IEEE CLOUD 2012, Program Committee Member 
  • IEEE DEIT 2011 (The International Conference on Data Engineering and Internet Technology 2011), Indonesia, Program Committee Member
  • MobiWis 2011 (8th International Conference on Mobile Web Information Systems), Canada, Program Vice Chair "Mobile Web and Cloud Services"
  • IEEE CLOUD 2011 (The 4th International Conference on Cloud Computing), July, Washington, US, Program Committee Member
  • IEEE CLOUD 2010 (3he  International Conference on Cloud Computing), July 2010, Florida, USA,Program Committee Member
  • IEEE CLOUD 2009 (2nd International Conference on Cloud Computing), from the 21-25 September, 2009 ,Program Committee Member
  • IEEE EDOC 2007 (Enterprise Distributed Object Computing Conference),Program Committee Member
  • IARIA Computation Tools 2010 (URL)  ,Program Committee Member
  • IARIA Service Computation 2010,Program Committee Member
  • ICITST-2009 (International Conference for Internet Technology and Secured Transactions), Program Committee Member
  • InCoB 2010 (International Conference on Bioinformatics), 2010 September, Japan, Program Committee Member
Invited Talks
  • Winter Simulation Conference 2014, December, 2014 (scheduled)
  • ACM ICPE 2014 (International Conference on Performance Engineering), Keynote Talk, Dublin, Ireland, March, 2014
  • Invited talk at 2nd Graph-TA workshop, February, 2014
    "ScaleGraph: A Billion-Scale Graph Analytics Library" 
    (Download Slides
  • Invited talk at Barcelona Supercomputing Centre, Spain, February, 2014
    "Big Data Processing in Large-Scale Network Analysis and Billion-Scale Social Simulation"
  • Invited talk at ETH, Switzerland, February, 2014
    "Big Data Processing in Large-Scale Network Analysis and Billion-Scale Social Simulation" 
  • Invited talk at Durham University, UK, January, 2014
  • Invited talk at the 1st Irish Big Data workshop (URL)
  • Invited talk at NVIDIA Conference Japan 2013 
  • Invited talk at JSAI Conference, 2013, Toyoma, Japan
  • more ...