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Graduate School of Information Science and Technology, The University of Tokyo
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2010/09/03

Auto-tuning technology applicable to all computers

Professor Reiji Suda
(Department of Computer Science)

Professor Suda aims, through his research on “tuning” which realizes high performance computers and architecture, at establishing general-purpose technology to enable one to write auto-tuning programs without special skills.  He is currently conducting researches on the keyword “ultra low power” using auto-tuning technology as a member of JST Next Generation ULP-HPC (Ultra Low Power in High Performance Computing) Development Project, looking ahead the next 10 years.

This research focuses on tuning to minimize power waste by combining various methods such as separating parts that are computed with full-power and parts that can be processed later, adjustment of CPU clock, and use of a power-efficient computing unit like GPU (Graphic Processor).  In pursuit of this goal, sequential experimental design is developed based on Bayesian statistics and an approximate solution method which derives high quality solutions based on Bayesian theory is used to maintain optimal power efficiency by measuring the system power.  Low power programming methods and software are also developed to achieve significant low power consumption.

If power consumption of a supercomputer as an example of HPC can be reduced, it will be as small and lightweight as a desktop PC and a wide range of researchers who could not access a supercomputer before will be able to use it.  This will further promote next generation research necessary for shaping the future of Japan, including life science, nanotechnology, material, meteorology, and aerospace.

Professor Suda’s auto-tuning technology, however, is not limited to the theme of low power HPC.  The main goal is development of general-purpose technologies that can be applied to new computers without modifying programs.  He takes an active part in the Automatic Tuning Research Group comprised of university and industry researchers, and strives towards this goal with the important mission to support advancement of future science technology.

 


Graduate School of Information Science and Technology
the University of Tokyo