Faculty Profiles - NOMURA Yoshinari

MISC - NOMURA Yoshinari

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D-9-9 Design of Task Forecasting System Using History of Recurring Tasks

Yoshii Hideto, Nomura Yoshinari

Proceedings of the IEICE General Conference 2012 ( 1 ) 141 - 141 2012.3

Evaluation of Calendaring System Conforming with Ambiguous Recurring Tasks

三原俊介, 乃村能成, 谷口秀夫, 南裕也

情報処理学会研究報告(CD-ROM) 2011 ( 6 ) 2012

Implementation of Calendaring System Conforming with Ambiguous Recurring Tasks

三原俊介, 乃村能成, 谷口秀夫

情報処理学会研究報告(CD-ROM) 2011 ( 10 ) 1 - 6 2011.11

Design of a Method for Coexistence of 32/64-bit Kernels

NAKAHARA Daiki, NOMURA Yoshinari, TANIGUCHI Hideo

IEICE technical report. Computer systems 111 ( 255 ) 25 - 30 2011.10

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

As wide spreading of 64-bit CPUs, Operating System (OS) is changing its architecture-base from 32-bit to 64-bit. Software running under 64-bit OSes can use the vast address space, and can process a large amount of data at one time, which can improve the performance of system significantly. However, 64-bit OSes are not compatible with some software written for 32-bit OSes. Especially, system software including kernels and device drivers written for 32-bit OSes can't operate on 64-bit OSes. We propose a method for running simultaneously 32-bit kernels and 64-bit kernels on a multi-core processor by using Mint operating system. Using this method, users can use software written for 32-bit OS and the address space of 64-bit OS as the whole system. In this paper, we report the design, implementation, and some typical use of this method.

IMSにおけるXDMS高度利用のためのソフトウェアフレームワーク

乃村能成, 長尾武憲, 谷口秀夫, 南裕也, 並河大地

全国大会講演論文集 2011 ( 1 ) 41 - 43 2011.3

Language：Japanese Publisher：一般社団法人情報処理学会

次世代ネットワークNGN/IMSが提供するXDMSは,携帯電話のコンタクトリストやIM(Instant Messaging)の通信記録など,比較的小さなデータチャンクを扱うためのデータベースである.XDMSにおけるデータは,その種別に応じた単独のAS(Application Server)のみに操作されることが通例のため,XDMS自身は排他制御などの複雑な制御機能を提供していない.また,アクセスプロトコルとしてHTMLベースとしたXCAPを採用しているため操作が単純で分かりやすい反面,AS がリッチなサービスを提供する場合には,AS開発の工数が大きい.そこで,本稿では,ASがXDMSをより高水準なインタフェースで扱えるようにするためのフレームワークを提案する.

A Method for Booting Mint Operating System by Using Kexec

NAKAHARA Daiki, SENZAKI Ryota, USHIO Hiroshi, KATAOKA Tetsuya, NOMURA Yoshinari, TANIGUCHI Hideo

IEICE technical report 110 ( 278 ) 35 - 40 2010.11

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

We develop the Mint operating system that have the function of running multiple OSes simultaneously on a multi-core processor. In the Mint, first OS boots other OSes, and Mint needs a kernel image each OSes. In other words, multiple kernel images are necessary. In this paper, we propose a method for booting later running OS by using Kexec, and we describe that multiple kernel images of Mint can be unified. In addition, we evaluate the code change quantity and the time for booting OS about this method for booting.

Design and Evaluation of Mint : Multiple Linux Kernels on Multicore Processor

SENZAKI Ryota, NAKAHARA Daiki, USHIO HIROSHI, KATAOKA Tetsuya, AWATA Yuichi, NOMURA Yoshinari, TANIGUCHI Hideo

IEICE technical report 110 ( 278 ) 29 - 34 2010.11

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

The computer is providing various services as the computer becomes high performance. The method that run in two or more OS on one computer is researched activity to execute various services flexibly. In these methods, a virtual machine is kwon widely. In a virtual machine method, one or more OSes can run on a hardware by running on a virtual computer. However, each OSes influence other OS and it is low independence between each OSes in a virtual machine method. In this paper, we proposes the "Mint" operating system that run independently two or more Linux by using the multi-core processor on one computer. Moreover, we report the performance when two or more OS run.

Evaluation of the S/W Scheduler for CMP Based on Continuation Model

MORIYAMA Hideaki, NOMURA Yoshinari, TANIGUCHI Hideo

IEICE technical report 110 ( 278 ) 11 - 16 2010.11

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

In chip multi-processor based on the continuation concept, the hardware scheduler controls threads and achieves the high performance on thread-scheduling. However, the execution of each thread can not consider priority to threads because the hardware scheduler schedules threads in FIFO manner. Therefore, when multiple services execute simultaneously, the execution of each service can not consider priority to service. It needs the software support to control the execution of each service. We proposed the software scheduler to support the hardware scheduler. In this paper, we evaluate the software scheduler, which targets various parallel level services.

Evaluation of Dynamic Communication Control Server Replacement Processing for AnT

2010 ( 11 ) 99 - 104 2010.10

B-036 A Method for Booting Multiple Linux Kernels for Each Core Using Kexec

Nakahara Daiki, Nomura Yoshinari, Taniguchi Hideo

9 ( 1 ) 363 - 364 2010.8

B-037 A Method for Running Multiple Linux Kernels on Multicore Processor

Senzaki Ryota, Nomura Yoshinari, Taniguchi Hideo

9 ( 1 ) 365 - 366 2010.8

Design of Converting Linux LKM Device Driver into Concrete Process in AnT Operating System

SHIMAZAKI Yutaka, TABATA Toshihiro, NOMURA Yoshinari, TANIGUCHI Hideo

IEICE technical report 109 ( 475 ) 517 - 522 2010.3

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

Recent OS has a large number of device drivers. It is important to reduce cost for developing new device drivers in OS development. When we port an existing device driver into the OS which realizing device driver process to reduce the development cost, we need to not only port but also form it into process. In this paper, we show a method for converting an existing Linux LKM device driver into process in AnT operating system. Furthermore, we evaluated the proposal method using drivers such as the FD, Intel 1GbE, and Realtek 1GbE driver.

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Design of Converting Linux LKM Device Driver into Concrete Process in AnT Operating System

SHIMAZAKI Yutaka, TABATA Toshihiro, NOMURA Yoshinari, TANIGUCHI Hideo

IEICE technical report 109 ( 474 ) 517 - 522 2010.3

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

Design of the document management system using XDMS in IMS

SUGAIN Yoshinobu, NOMURA Yoshinari, TANIGUCHI Hideo

72 ( 3 ) 449 - 450 2010.3

A Mailing List Management System Mashing-Up with Web Services.

Keisuke Fujiwara, Yoshinari Nomura, Hideo Taniguchi

Proceedings of the Fifth International Conference on Broadband and Wireless Computing, Communication and Applications(BWCCA) 141 695 - 700 2010

A Method for CMP-oriented thread scheduling based on continuation model

MORIYAMA Hideaki, NOMURA Yoshinari, TANIGUCHI Hideo

IEICE technical report 109 ( 296 ) 37 - 42 2009.11

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

Fuce processor is a variant of CMP processor, which has multiple thread execution cores. The computation model of the Fuce is built on the basis of continuation concept, and its thread-execution unit is realized by hardware logic. Hereby, Fuce achieves the high performance on thread-scheduling. By utilizing this characteristic, Fuce is capable of dealing with quite many simultaneous threads in nature. However, the thread execution unit of the Fuce implemented by hardware logic is too simple to control the precise priority of individual thread. Therefore, Fuse needs some additional software components on the top of its hardware scheduler. In this paper, we have implemented a CMP-oriented software thread-scheduler on Fuce, and evaluate the performance of it.

Low Overhead Packet Monitoring on TwinOS

AWATA Yuichi, NOMURA Yoshinari, TANIGUCHI Hideo

IEICE technical report 109 ( 237 ) 19 - 24 2009.10

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

Due to the increasing of illegal attacks from outside, network monitoring component is one of the largest concern to the operating system construction. Since the monitoring works as a system-lifelong component, the overheads of the monitoring should be minimum. However, one of the most popular monitoring technique using standard Virtual Machine (VM) has handsome overheads. This paper proposes a new method for packet monitoring using TwinOS, which alleviates the overheads of the VM based systems.

D-6-22 Computer Management Database System Cooperate with DHCP and DNS

Kishi Masaaki, Nomura Yoshinari

Proceedings of the IEICE General Conference 2009 ( 1 ) 72 - 72 2009.3

D-6-16 A Discussion about Efficient Handover of Work

Ogasawara Ryo, Nomura Yoshinari, Taniguchi Hideo

Proceedings of the IEICE General Conference 2009 ( 1 ) 66 - 66 2009.3

D-6-18 An Effective Method for Collecting Web Access History Using Proxy Server

Kurihara Seiji, Nomura Yoshinari, Taniguchi Hideo

Proceedings of the IEICE General Conference 2009 ( 1 ) 68 - 68 2009.3

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