Effective Use of Computational Resources inMulticore Distributed Systems
Hidehiro Kanemitsu*, Masaki Hanada**, Takashige Hoshiai***, Hidenori Nakazato*****Media Network Center, Waseda University, Japan**Department of Information Systems, Tokyo University of Information Sciences, Japan***Department of Computer and Information Science, Sojo University, Japan****Global Information and Telecommunication Institute, Waseda University, Japan.
kanemih@ruri.waseda.jp, mhanada@rsch.tuis.ac.jp, hoshiai@cis.sojo-u.ac.jp, nakazato@waseda.jp

Abstract—In the last decades, many kinds of task execution models such as grid and cloud computing have been developed. In such
distributed systems, each task is processed by respective processor in multicored computers e.g., household PCs which we can easily
harness in recent years. If there is one policy to automatically decide the “best” combination and the number of processors (andcomputers), we effectively utilize those computational resources, thereby large number of jobs can be executed in parallel. In this paper,
we propose a method for mapping of execution units for such environments. The method adopts a remapping technology after
processor-execution unit mapping[11] is finished. Experimental comparisons by a simulation show the advantages of the proposedmethod.
Keyword—Task Clustering, Multicore, Distributed Systems, Parallel Computing
Hidehiro Kanemitsu received the B.S. degree from Waseda University, Japan in Science, and the M.S. and D.S. degrees from Waseda
University, Japan in Global Information and Telecommunication Studies (GITS). His research interests are in areas of parallel anddistributed computing, grid, peer-to-peer computing, and web service technology. He is currently an assistant professor at Media Network
Center, Waseda University, Japan.

Masaki Hanada received the B.E. degree in Resources Engineering from Waseda University in 1996, and the M.S. and D.S. degrees in
Global Information and Telecommunication Studies from Waseda University in 2003 and 2007, respectively. He has been an assistantprofessor at the Department of Information Systems, Tokyo University of Information Sciences. His research interests include QoS/trafficcontrol and resource management in communication networks.

Takashige Hoshiai has been a Professor at Sojo University since 2012. He was a senior research scientist supervisor at NTT Network
Service Systems Laboratories from 1986 to 2012. He received his Ph.D. degree in Communications and Systems from The University ofElectro-Communications, Japan. His research areas are distributed object technologies, real-time systems, agent systems and P2P. Since heproposed a new business model called“ Brokerless Model ” in 1998, especially, he has studied SIONet architecture that is a solution of P2Pplatforms.

Hidenori Nakazato received his B. Engineering degree in Electronics and Telecommunications from Waseda University in 1982, and hisMS and Ph.D. degrees in Computer Science from University of Illinois in 1989 and 1993, respectively. He wase with Oki Electric from1982 to 2000 where he developed equipment for public telephony switches, distributed environment for telecommunications systems, andcommunications quality control mechanisms. He has been a Professor at Graduate School of Global Information and Telecommunications
Studies, Waseda University since 2000. His research interests include performance issues in distributed systems and networks,
cooperation mechanisms of distributed programs, distributed real-time systems, and network QoS control.