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DAPSCO: Distance-Aware Partially Shared Cache Organization

Publicated to:Acm Transactions On Architecture And Code Optimization. 8 (4): 25- - 2012-01-01 8(4), DOI: 10.1145/2086696.2086704

Authors: García-Guirado, A; Fernández-Pascual, R; Ros, A; García, JM

Affiliations

Univ Murcia, Dept Ingn & Tecnol Computadores - Author
Univ Politecn Valencia, Dept Informat Sistemas & Computadores - Author

Abstract

Many-core tiled CMP proposals often assume a partially shared last level cache (LLC) since this provides a good compromise between access latency and cache utilization. In this paper, we propose a novel way to map memory addresses to LLC banks that takes into account the average distance between the banks and the tiles that access them. Contrary to traditional approaches, our mapping does not group the tiles in clusters within which all the cores access the same bank for the same addresses. Instead, two neighboring cores access different sets of banks minimizing the average distance travelled by the cache requests. Results for a 64-core CMP show that our proposal improves both execution time and the energy consumed by the network by 13% when compared to a traditional mapping. Moreover, our proposal comes at a negligible cost in terms of hardware and its benefits in both energy and execution time increase with the number of cores.

Keywords

Access latencyAverage distanceCacheCache utilizationCore levelsDistance to cacheExecution timeLast-level cacheMany-coreMappingMemory addressModelPerformancePowerReplicationShared cacheStatic block mappingTiled cmp

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Acm Transactions On Architecture And Code Optimization, and although the journal is classified in the quartile Q3 (Agencia WoS (JCR)), its regional focus and specialization in Computer Science, Theory & Methods, give it significant recognition in a specific niche of scientific knowledge at an international level.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-06-24:

  • WoS: 3
  • Scopus: 3
  • OpenCitations: 4

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-24:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 17 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.