Message Passing on a Time-predictable Multicore Processor

Rasmus Bo Sørensen, Wolfgang Puffitsch, Martin Schoeberl, Jens Sparsø

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Real-time systems need time-predictable computing platforms. For a multicore processor to be time-predictable, communication between processor cores needs to be time-predictable as well. This paper presents a time-predictable message-passing library for such a platform. We show how to build up abstraction layers from a simple, time-division multiplexed hardware push channel. We develop these time-predictable abstractions and implement them in software. To prove the time-predictability of these functions we analyze their worst-case execution time (WCET) with the aiT WCET analysis tool. We combine these WCET numbers with the calculation of the network latency of a message and then provide a statically computed end-to-end latency for this core-to-core message.
Original languageEnglish
Title of host publicationProceedings of the 18th IEEE Symposium on Real-time Computing (ISORC '15)
PublisherIEEE Press
Publication date2015
Publication statusPublished - 2015
Event18th IEEE International Symposium on Real-time Computing - Auckland, New Zealand
Duration: 13 Apr 201517 Apr 2015
Conference number: 18


Conference18th IEEE International Symposium on Real-time Computing
Country/TerritoryNew Zealand
Internet address


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