Synchronisation in a Multithreaded Processor

Sen Shondip, Welch P. H., Muller Henk, Bakkers A. W. P., David May

Research output: Contribution to journalArticle (Academic Journal)peer-review


A multithreaded architecture exploits instruction level parallelism by interleaving instructions from disjoint thread contexts. As each thread executes within its own instruction stream with private data (the context registers), there is no interdependancy between instructions from different threads. This allows high resource utilisation of a super scalar pipelined processor at a very low cost, in terms of complexity and silicon area. A new synchronisation mechanism for a multithreaded architecture is outlined. Two new instructions have been introduced to perform one to one and n-way synchronisation. The operation allows synchronisations to be requested and actioned efficiently on chip in as little as four clock cycles. Barriers and CSP style channels can easily be constructed with this new synchronisation instruction. A brief examination of performance of this multithreaded architecture shows that the optimum number of contexts per multithreaded processing element is four, based on test programs.
Translated title of the contributionSynchronisation in a Multithreaded Processor
Original languageEnglish
Pages (from-to)137-144
JournalCommunicating Process Architectures 2000
Publication statusPublished - 2000

Bibliographical note

ISBN: 1586030779
Publisher: IOS Press
Name and Venue of Conference: Communicating Process Architectures 2000
Other identifier: 1000513

Fingerprint Dive into the research topics of 'Synchronisation in a Multithreaded Processor'. Together they form a unique fingerprint.

Cite this