Message Passing on a Time-predictable Multicore Processor

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

Message Passing on a Time-predictable Multicore Processor

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

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

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 language	English
Title of host publication	Proceedings of the 18th IEEE Symposium on Real-time Computing (ISORC '15)
Publisher	IEEE Press
Publication date	2015
Pages	51-59
Publication status	Published - 2015
Event	18th IEEE International Symposium on Real-time Computing - Auckland, New Zealand Duration: 13 Apr 2015 → 17 Apr 2015 Conference number: 18 http://www.isorc2015.org/

Conference

Conference	18th IEEE International Symposium on Real-time Computing
Number	18
Country/Territory	New Zealand
City	Auckland
Period	13/04/2015 → 17/04/2015
Internet address	http://www.isorc2015.org/

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@inproceedings{7ad6ee0aa8c240abbf17751314030c76,

title = "Message Passing on a Time-predictable Multicore Processor",

abstract = "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.",

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year = "2015",

language = "English",

pages = "51--59",

booktitle = "Proceedings of the 18th IEEE Symposium on Real-time Computing (ISORC '15)",

publisher = "IEEE Press",

note = "18th IEEE International Symposium on Real-time Computing , ISORC 2015 ; Conference date: 13-04-2015 Through 17-04-2015",

url = "http://www.isorc2015.org/",

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T1 - Message Passing on a Time-predictable Multicore Processor

AU - Sørensen, Rasmus Bo

AU - Puffitsch, Wolfgang

AU - Schoeberl, Martin

AU - Sparsø, Jens

N1 - Conference code: 18

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

M3 - Article in proceedings

SP - 51

EP - 59

BT - Proceedings of the 18th IEEE Symposium on Real-time Computing (ISORC '15)

PB - IEEE Press

T2 - 18th IEEE International Symposium on Real-time Computing

Y2 - 13 April 2015 through 17 April 2015

ER -

Message Passing on a Time-predictable Multicore Processor

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