Journal of KIISE:Computer Systems and Theory (한국정보과학회논문지:시스템및이론)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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Thermal Management for Multi-core Processor and Prototyping Thermal-aware Task Scheduler

멀티 코어 프로세서의 온도관리를 위한 방안 연구 및 열-인식 태스크 스케줄링

  • Published : 2008.08.15
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Abstract

Power-related issues have become important considerations in current generation microprocessor design. One of these issues is that of elevated on-chip temperatures. This has an adverse effect on cooling cost and, if not addressed suitably, on chip reliability. In this paper we investigate the general trade-offs between temporal and spatial hot spot mitigation schemes and thermal time constants, workload variations and microprocessor power distributions. By leveraging spatial and temporal heat slacks, our schemes enable lowering of on-chip unit temperatures by changing the workload in a timely manner with Operating System (OS) and existing hardware support.

최신의 마이크로프로세서 설계에서는 전력 관련 문제들이 중요한 고려사항이 되었다. 온-칩(On-chip) 온도 상승은 이와 관련하여 중요한 요소로 부각되었다. 이를 적절하게 처리하지 않을 경우 냉각 비용과 칩 신뢰성에 부정적인 결과를 초래한다. 이 논문에서 우리는 시간적/공간적인 핫 스폿(Hot spot) 완화를 위한 설계들과 열 시간 상수, 작업부하 변동, 마이크로프로세서의 전력 분배 사이의 보편적인 상충관계(Trade off)들을 조사한다. 우리의 방안은 작업부하의 실행위치/순서를 변경하고 동시실행 스레드의 수를 조절하여 시스템의 공간 및 시간적인 열 틈새(Heat slack)에 영향을 줌으로써, 운영체계(OS)와 이미 시스템에 존재하는 하드웨어의 지원만으로 적절한 시간제한내에 작업부하를 조절함으로써 온-칩 온도를 낮출 수 있다.

Keywords

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