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Efficient Strategies for Software-Only Directory Protocols in Shared-Memory Multiprocessors
Responsible organisation
1995 (English)Conference paper, (Refereed) Published
Abstract [en]

The cost, complexity, and inflexibility of hardware-based directory protocols motivate us to study the performance implications of protocols that emulate directory management using software handlers executed on the compute processors. An important performance limitation of such software-only protocols is that software latency associated with directory management ends up on the critical memory access path for read miss transactions. We propose five strategies that support efficient data transfers in hardware whereas directory management is handled at a slower pace in the background by software handlers. Simulations show that this approach can remove the directory-management latency from the memory access path. Whereas the directory is managed in software, the hardware mechanisms must access the memory state in order to enable data transfers at a high speed. Overall, our strategies reach between 60% and 86% of the hardware-based protocol performance.

Place, publisher, year, edition, pages
Santa Margherita Ligure; Italy: IEEE Computer Society Press , 1995.
Keyword [en]
Network protocols, Distributed computer systems, Computational complexity, Data handling, Critical path analysis, Computer software, Data transfer, Buffer storage, Program processors
National Category
Computer Science
Identifiers
URN: urn:nbn:se:bth-9653Local ID: oai:bth.se:forskinfoB288A861CD5FA308C12568A3002CAB55ISBN: 0-89791-698-0 (hft.) 0-7803-3000-5 (inb.) 0-7803-3001-3 (mikrofiche) (print)OAI: oai:DiVA.org:bth-9653DiVA: diva2:837556
Conference
22nd Annual International Symposium on Computer Architecture
Available from: 2012-09-18 Created: 2000-03-15 Last updated: 2015-06-30Bibliographically approved

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  • apa
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