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Communist, utilitarian, and capitalist cache policies on CMPs: caches as a shared resource

9 years 3 months ago
Communist, utilitarian, and capitalist cache policies on CMPs: caches as a shared resource
As chip multiprocessors (CMPs) become increasingly mainstream, architects have likewise become more interested in how best to share a cache hierarchy among multiple simultaneous threads of execution. The complexity of this problem is exacerbated as the number of simultaneous threads grows from two or four to the tens or hundreds. However, there is no consensus in the architectural community on what “best” means in this context. Some papers in the literature seek to equalize each thread’s performance loss due to sharing, while others emphasize maximizing overall system performance. Furthermore, the specific effect of these goals varies depending on the metric used to define “performance”. In this paper we label equal performance targets as Communist cache policies and overall performance targets as Utilitarian cache policies. We compare both of these models to the most common current model of a free-for-all cache (a Capitalist policy). We consider various performance metri...
Lisa R. Hsu, Steven K. Reinhardt, Ravishankar R. I
Added 11 Jun 2010
Updated 11 Jun 2010
Type Conference
Year 2006
Where IEEEPACT
Authors Lisa R. Hsu, Steven K. Reinhardt, Ravishankar R. Iyer, Srihari Makineni
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