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Understanding the thermal implications of multi-core architectures

By Pedro Chaparro, José González, Ieee Computer Society, Grigorios Magklis, Ieee Computer Society, Qiong Cai and Antonio González

Abstract

Abstract—Multicore architectures are becoming the main design paradigm for current and future processors. The main reason is that multicore designs provide an effective way of overcoming instruction-level parallelism (ILP) limitations by exploiting thread-level parallelism (TLP). In addition, it is a power and complexity-effective way of taking advantage of the huge number of transistors that can be integrated on a chip. On the other hand, today’s higher than ever power densities have made temperature one of the main limitations of microprocessor evolution. Thermal management in multicore architectures is a fairly new area. Some works have addressed dynamic thermal management in bi/quad-core architectures. This work provides insight and explores different alternatives for thermal management in multicore architectures with 16 cores. Schemes employing both energy reduction and activity migration are explored and improvements for thread migration schemes are proposed. Index Terms—Multicore architectures, dynamic thermal management, activity migration, dynamic voltage, frequency scaling.

Year: 2007
OAI identifier: oai:CiteSeerX.psu:10.1.1.135.96
Provided by: CiteSeerX
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