Portability and performance in heterogeneous many core Systems

Detalhes bibliográficos
Autor(a) principal: Ribeiro, Roberto
Data de Publicação: 2011
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/28170
Resumo: Dissertação de mestrado em Informática
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spelling Portability and performance in heterogeneous many core Systems681.3.02Dissertação de mestrado em InformáticaCurrent computing systems have a multiplicity of computational resources with different architectures, such as multi-core CPUs and GPUs. These platforms are known as heterogeneous many-core systems (HMS) and as computational resources evolve they are o ering more parallelism, as well as becoming more heterogeneous. Exploring these devices requires the programmer to be aware of the multiplicity of associated architectures, computing models and development framework. Portability issues, disjoint memory address spaces, work distribution and irregular workload patterns are major examples that need to be tackled in order to e ciently explore the computational resources of an HMS. This dissertation goal is to design and evaluate a base architecture that enables the identi cation and preliminary evaluation of the potential bottlenecks and limitations of a runtime system that addresses HMS. It proposes a runtime system that eases the programmer burden of handling all the devices available in a heterogeneous system. The runtime provides a programming and execution model with a uni ed address space managed by a data management system. An API is proposed in order to enable the programmer to express applications and data in an intuitive way. Four di erent scheduling approaches are evaluated that combine di erent data partitioning mechanisms with di erent work assignment policies and a performance model is used to provide some performance insights to the scheduler. The runtime e ciency was evaluated with three di erent applications - matrix multiplication, image convolution and n-body Barnes-Hut simulation - running in multicore CPUs and GPUs. In terms of productivity the results look promising, however, combining scheduling and data partitioning revealed some ine ciencies that compromise load balancing and needs to be revised, as well as the data management system that plays a crucial role in such systems. Performance model driven decisions were also evaluated which revealed that the accuracy of a performance model is also a compromising component.Santos, Luís PauloUniversidade do MinhoRibeiro, Roberto2011-12-152011-12-15T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/1822/28170enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:33:03Zoai:repositorium.sdum.uminho.pt:1822/28170Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:28:30.245774Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Portability and performance in heterogeneous many core Systems
title Portability and performance in heterogeneous many core Systems
spellingShingle Portability and performance in heterogeneous many core Systems
Ribeiro, Roberto
681.3.02
title_short Portability and performance in heterogeneous many core Systems
title_full Portability and performance in heterogeneous many core Systems
title_fullStr Portability and performance in heterogeneous many core Systems
title_full_unstemmed Portability and performance in heterogeneous many core Systems
title_sort Portability and performance in heterogeneous many core Systems
author Ribeiro, Roberto
author_facet Ribeiro, Roberto
author_role author
dc.contributor.none.fl_str_mv Santos, Luís Paulo
Universidade do Minho
dc.contributor.author.fl_str_mv Ribeiro, Roberto
dc.subject.por.fl_str_mv 681.3.02
topic 681.3.02
description Dissertação de mestrado em Informática
publishDate 2011
dc.date.none.fl_str_mv 2011-12-15
2011-12-15T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/28170
url http://hdl.handle.net/1822/28170
dc.language.iso.fl_str_mv eng
language eng
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eu_rights_str_mv openAccess
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