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- 저자 : TOKUNAGA Kazuya (검색결과 2 건)
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Kazuya Tokunaga,Akira Kojima,Tetsuo Hironaka 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
Many researchers and companies have been interested in computer systems which have reconfigurable devices as programmable resources. Current Reconfigurable systems (RC systems) are basically single task systems, but the number of reconfigurable devices in these systems has increased so that multitasking environment for the systems are required to use the devices efficiently. In this paper, we develop the OS functions to support executing user programs which use FPGAs as customized hardware in multitasking environment. The target system consists of a host compute and FPGAs. The functions are implemented on the target system as RCOS server. RC-OS server supports management of FPGA resources and communication control between host computer and FPGA resources. We develop the programs which use the RC-OS functions, and executed them in multitasking environment on our prototype RC system. As the result, it shows that RC-OS server improves the usability of target system.
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OS Functions for a Distributed FPGA Cluster System
KOJIMA Akira,TOKUNAGA Kazuya,HIRONAKA Tetsuo 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
In reconfigurable computer systems that have reconfigurable resources like FPGA, CPLD etc., OS functions will be necessary to improve utilization of the systems. We have been studying OS functions for these reconfigurable systems. Our first target hardware was tightly coupled FPGA cluster using shared bus and it is easy to access reconfigurable resources, but it is difficult to increase the number of resources. Our second target system is distributed FPGA cluster that is connected by network and it is easy to increase the number of reconfigurable resources, but complicated network handling is necessary to communicate between host computer and reconfigurable resources. In this paper, OS functions for the distributed FPGA cluster system are described, which provide communication services and have compatible simple programming interface with the first target hardware.
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