Toyo (Toyotaro) Suzumura  Toyo (Toyotaro) Suzumura photo       

contact information

Research Scientist / Manager, Scalable Graph Computing
Thomas J. Watson Research Center, Yorktown Heights, NY USA


Professional Associations

Professional Associations:  ACM  |  ACM SIGHPC  |  IEEE   |  IPSJ

more information

More information:  DBLP  |  ScaleGraph  |  Japanese  |  Graph500


Dr. Toyo (Toyotaro) Suzumura is currently a research scientist and manager at IBM T.J. Watson Research Center, the headquarter of IBM Research leading the team of cognitive graph computing platform. He also served as a visiting full professor at Barcelona Supercomputing Center in Spain as well as a visiting researcher at University of Tokyo in Japan. 

He holds his Ph.D. in Computer Science from Tokyo Institute of Technology. His Ph.D. thesis focused on Grid computing and large-scale distributed computing systems. His current research topics include big data processing middlewares, large-scale graph analytics, supercomputing / high performance computing, and microscopic simulation platforms.

He joined IBM Research – Tokyo in 2004 as a research scientist and has also continued to serve professorship in academia since 2009. Since April 2009, he had served as a visiting associate professor at Tokyo Institute of Technology in Japan and led his own research laboratory named Suzumura laboratory. Since October 2013, he has moved to Smarter Tenology Cities Center in IBM Research – Ireland as international assignment leading the large-scale traffic simulation project in Dublin, Ireland.  During the stay he also served as a visiting associate professor at University College Dublin as well as an adjunct professor at Tokyo Institute of Technology in Japan. In Apri 2015, he completely transfered to IBM T.J. Watson Research Center in New York

He is now a co-principal investigator for two Japanese government projects funded by Japan Science Foundation that aim at building next-generation big data processing middlewares and libraries. One of his notable achievements is that he has kept leading the team of winning the first place at the world competition of “Big Data” processing on supercomputers called “Graph500” ( 6 times since June 2014 by proposing a novel and highly scalable graph search algorithm on massively parallel and distributed computers and successfully implementing it on the Japanese K
supercomputer. He has also led a project “ScaleGraph” ( of developing an open source library for billion-scale graph analytics.

He has published more than 63 reviewed paper for top-quality international conferences and workshops, 42 domestic conferences, and 12 international patents, and also served invited speakers, workshop chairs and/or program committee members for top-tier conferences such as ACM/IEEE Supercomputing and ACM International World Wide Web Conference. He is also a PC co-chair for IEEE BigData 2017 and industrial PC co-chair for IEEE BigData 2016. 

Current and Prior Positions

IBM T.J. Watson Research Center - IBM Research 
Research Scientist / Manager 
4/2015 - Present

Barcelona Supercomputing Center
Visiting Professor
4/2016 - Present

The University of Tokyo
Visiting Researcher
4/2016 - Present

IBM Research
Research Staff Member
4/2004 - Present
Currently work for IBM T.J. Watson Research Center, the HQ of IBM Research after spending 11 years in IBM Research - Ireland and IBM Research - Tokyo

Tokyo Institute of Technology
Visiting Associate Professor 
2009/04 - 2013/09