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dc.contributor.authorCai, Qiong
dc.contributor.authorCodina Viñas, Josep M.
dc.contributor.authorGonzález González, José
dc.contributor.authorGonzález Colás, Antonio María
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors
dc.identifier.citationCai, Q., Codina, J.M., González, J., González, A. A software-hardware hybrid steering mechanism for clustered microarchitectures. A: IEEE International Symposium on Parallel and Distributed Processing. "IEEE International Symposium on Parallel and Distributed Processing, 2008: IPDPS 2008; 14-18 April 2008, Miami, Florida, USA". Miami, Florida: Institute of Electrical and Electronics Engineers (IEEE), 2008, p. 1-12.
dc.description.abstractClustered microarchitectures provide a promising paradigm to solve or alleviate the problems of increasing microprocessor complexity and wire delays. High- performance out-of-order processors rely on hardware-only steering mechanisms to achieve balanced workload distribution among clusters. However, the additional steering logic results in a significant increase on complexity, which actually decreases the benefits of the clustered design. In this paper, we address this complexity issue and present a novel software-hardware hybrid steering mechanism for out-of-order processors. The proposed software- hardware cooperative scheme makes use of the concept of virtual clusters. Instructions are distributed to virtual clusters at compile time using static properties of the program such as data dependences. Then, at runtime, virtual clusters are mapped into physical clusters by considering workload information. Experiments using SPEC CPU2000 benchmarks show that our hybrid approach can achieve almost the same performance as a state-of-the-art hardware-only steering scheme, while requiring low hardware complexity. In addition, the proposed mechanism outperforms state-of-the-art software-only steering mechanisms by 5% and 10% on average for 2-cluster and 4-cluster machines, respectively.
dc.format.extent12 p.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectÀrees temàtiques de la UPC::Informàtica::Arquitectura de computadors
dc.subject.lcshCompilers (Computer programs)
dc.subject.otherCircuit complexity
dc.subject.otherComputer architecture
dc.subject.otherHardware-software codesign
dc.subject.otherLogic design
dc.subject.otherMicroprocessor chips
dc.subject.otherProgram compilers
dc.subject.otherProgram diagnostics
dc.titleA software-hardware hybrid steering mechanism for clustered microarchitectures
dc.typeConference report
dc.subject.lemacCompiladors (Programes d'ordinador)
dc.contributor.groupUniversitat Politècnica de Catalunya. ARCO - Microarquitectura i Compiladors
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorCai, Q.; Codina, J.M.; González, J.; González, A.
local.citation.contributorIEEE International Symposium on Parallel and Distributed Processing
local.citation.pubplaceMiami, Florida
local.citation.publicationNameIEEE International Symposium on Parallel and Distributed Processing, 2008: IPDPS 2008; 14-18 April 2008, Miami, Florida, USA

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