Embracing diversity in the Barrelfish manycore operating system
msra(2008)
摘要
We discuss diversity and heterogeneity in manycore computer sys- tems, and identify three distinct types of diversity, all of which present challenges to operating system designers and application writers alike. We observe that most current research work has con- centrated on a narrow form of one of these (non-uniform memory access) to the exclusion of the others, and show with measurement why this makes sense in the short term. However, we claim that this is not viable in the long term given current processor and system roadmaps, and present our approach to dealing with both heterogeneous hardware within a single sys- tem, and the increasing diversity of complete system configura- tions: we directly represent detailed system information in an ex- pressive "system knowledge base" accessible to applications and OS subsystems alike, and use this to control tasks such as schedul- ing and resource allocation.
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关键词
non uniform memory access,operating system,resource allocation,knowledge base
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