• Journal of Information Management
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• v.34 no.2
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• pp.107-123
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• 2003

This paper investigates the present state of organization and services of digital conference materials with the KISTI's collections. The results can be used in construction of collection development policy and information organization and services via local library automation systems.

• Journal of Information Science Theory and Practice
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• v.10 no.spc
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• pp.56-65
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• 2022

Korea Institute of Science and Technology Information (KISTI) is a Worldwide LHC Computing Grid (WLCG) Tier-1 center mandated to preserve raw data produced from A Large Ion Collider Experiment (ALICE) experiment using the world's largest particle accelerator, the Large Hadron Collider (LHC) at European Organization for Nuclear Research (CERN). Physical medium used widely for long-term data preservation is tape, thanks to its reliability and least price per capacity compared to other media such as optical disk, hard disk, and solid-state disk. However, decreasing numbers of manufacturers for both tape drives and cartridges, and patent disputes among them escalated risk of market. As alternative to tape-based data preservation strategy, we proposed disk-only erasure-coded archival storage system, Custodial Disk Storage (CDS), powered by Exascale Open Storage (EOS), an open-source storage management software developed by CERN. CDS system consists of 18 high density Just-Bunch-Of-Disks (JBOD) enclosures attached to 9 servers through 12 Gbps Serial Attached SCSI (SAS) Host Bus Adapter (HBA) interfaces via multiple paths for redundancy and multiplexing. For data protection, we introduced Reed-Solomon (RS) (16, 4) Erasure Coding (EC) layout, where the number of data and parity blocks are 12 and 4 respectively, which gives the annual data loss probability equivalent to 5×10^-14. In this paper, we discuss CDS system design based on JBOD products, performance limitations, and data protection strategy accommodating EOS EC implementation. We present CDS operations for ALICE experiment and long-term power consumption measurement.

• Journal of Korean Library and Information Science Society
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• v.51 no.4
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• pp.121-156
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• 2020

Content curation aims to limit the user's experience to the most necessary content; to do this, it is necessary to identify users' information needs. Given that KISTI's Content Curation Center was established in 2018, it had little information about its users. This study intends to investigate what content scientists want to see from KISTI and how they want it curated. It investigated researchers who worked for government-funded research institutes through online surveys and telephone interviews. This study's results helped me review the current practice of KISTI content curation and give some suggestions to improve future practice. They present information on content and content curation services required by researchers; therefore, they can be used as a reference for information agencies (e.g., libraries, data centers) to improve their content curation practices.

• Journal of Information Management
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• v.33 no.1
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• pp.18-30
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• 2002

This study is to propose the model of Digital Document Information Center at KISTI which is a representative center of science, technology and industry information in Korea. The model proposed at this study is reflected current information environment such as digitalization, Internet and various internal and external situations. Also, the study is proposed the medium and long range plans for the center.

• Proceedings of the Korea Contents Association Conference
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• 2005.11a
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• pp.428-432
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• 2005

This paper has studied the concept and technical factors of e-Learning system to which we intend to apply domestic biodiversity information. This article describes how we analyzed and designed the e-learning system to serve biodiversity information as e-Learning contents. It would be useful for the public and students if this information are organized and provided as e-learning contents especially in our country which has well-established network infrastructure considering the limited land space. It is expected that the establishment of e-Learning system based on this proposed design will help students and public to access and team biodiversity on cyber space.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.64-65
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• 2016

슈퍼컴퓨터는 대용량의 데이터를 효율적으로 관리하기 위해 Lustre 파일 시스템과 같은 고성능의 병렬 파일 시스템을 이용한다. 한국과학기술정보연구원의 슈퍼컴퓨터 4호기 Tachyon 2차 시스템과 같이 다수의 사용자가 접속하는 슈퍼컴퓨터는 사용자의 데이터가 한없이 누적됨으로 Lustre 파일 시스템의 성능이 저하되는 이슈가 있다. 본 논문에서는 사용자의 데이터가 누적되는 것을 방지하기 위해 장기간 사용하지 않는 데이터를 자동 삭제하는 기능인 Purge기능을 구현하였다. 특히, 기하급수적으로 늘어나는 병렬 파일 시스템의 용량에 대처하기 위해 병렬 컴퓨팅 기술을 이용해 고속 Purge 기능을 구현하였다. 단일 컴퓨팅 노드와 병렬 환경에서 구현한 결과를 비교하였을 때, 단일 컴퓨팅 노드에서는 1,517GB 용량을 지우는데 221.2초가 걸렸으며 16개의 컴퓨팅 노드를 이용한 병렬 환경에서는 49.9초가 걸렸다. 이 결과를 비교했을 때 단일 컴퓨팅 노드에서 구현한 결과 대비 병렬 환경에서 구현했을 때 약 4.4배의 성능향상을 얻을 수 있었다.

• Journal of Internet Computing and Services
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• v.19 no.3
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• pp.57-66
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• 2018

EDISON ( EDucation-research Integration through Simulation On the Net) is a web simulation service based on cloud compu-ting. EDISON provides that web service and provide analysis result to users through pre-built infrastructure and various calcu-lation nodes computational science engineering problems that are difficult or impossible to analysis as user's personal resources to users. As a result, a simulation execution environment is provided in a web portal environment so that EDISON can be ac-cessed regardless of a user's device or operating system to perform computational science engineering analysis simulation. The purpose of this research is to design and construct a workbench based real - time dynamic service to provide an integrat-ed user interface to the EDSION system, which is a computational science engineering simulation and analysis platform, which is currently provided to users. We also devised a workbench-based user simulation service environment configuration. That has a user interface that is similar to the computational science engineering simulation software environment used locally. It can configure a dynamic web environment such as various analyzers, preprocessors, and simulation software. In order to provide these web services, the service required by the user is configured in portlet units, and as a result, the simulation service using the workbench is constructed.

• International Journal of Contents
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• v.6 no.3
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• pp.10-14
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• 2010

Researchers in Korea and elsewhere have carried out a wide variety of important research activities in their respective fields, producing valuable research results. For such diverse research results to be shared and exchanged among researchers working in the same discipline and research subject there needs to be a community environment based on free utilization of information. Against this backdrop, this study seeks to classify and reprocess the reference/factual content owned by the KISTI (Korea Institute of Science and Technology Information), a state-run distributor of information on science and technology, by the different research subjects. It also seeks to develop and provide a community model based on the concepts of open archiving and open access for the researchers specialized in the related fields of research. This community model is developed focusing on the research results from the field of bioscience, where the most extensive studies are currently being conducted. To develop the community model, this study: (a) surveys the current status of the content owned by KISTI; (b) analyzes the patterns and characteristics of biological scientific content among the KISTI-owned content; and (c) designs a web platform where researchers can freely upload/download research results.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.571-572
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• 2017

한국과학기술정보연구원에서 운영 중인 슈퍼컴퓨터 4호기인 Tachyon 2차 시스템은 이론최고성능 300TFlops인 SUN Blade 6275 시스템을 기반으로 구성되어있다. 로그인 노드 4대와 컴퓨팅 노드 3200대로 구성되어 있으며 컴퓨팅 노드 중에 24대는 디버깅 노드로 사용되고 있다. 3200대의 컴퓨팅 노드가 동일한 하드웨어로 구성이 되어 있으므로 Tachyon 2차 시스템의 전체 계산 성능을 결정하는 가장 중요한 요소가 단일 컴퓨팅 노드의 성능이 되겠다. 본 논문에서는 다양한 벤치마크 기법을 통해 단일 노드의 성능을 측정하여 분석하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07a
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• pp.52-54
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• 2005

Beowulf 타입의 리눅스 클러스터 시스템의 핵심노드인 계산노드는 일반적으로 범용 엔트리급 서버 및 PC 등을 이용하여 구성되며, 이 계산노드의 성능은 전체 클러스터의 계산 성능을 결정하는 가장 중요한 요소 중의 하나이다. 이에 본 논문에서는 현재 시중에서 유통 중인 대표적인 로엔드 플랫폼-Xeon, P-IV, Opteron, Athlon64-들을 대상으로 HPL, NPB, stream등 고성능 컴퓨팅 분야에서 널리 쓰이는 벤치마킹 테스트 도구를 사용하여 개별 노드의 성능을 측정하여 비교 분석하였다.