3 Search Results for "Rivas, Juan M."


Document
Artifact
From FMTV to WATERS: Lessons Learned from the First Verification Challenge at ECRTS (Artifact)

Authors: Sebastian Altmeyer, Étienne André, Silvano Dal Zilio, Loïc Fejoz, Michael González Harbour, Susanne Graf, J. Javier Gutiérrez, Rafik Henia, Didier Le Botlan, Giuseppe Lipari, Julio Medina, Nicolas Navet, Sophie Quinton, Juan M. Rivas, and Youcheng Sun

Published in: DARTS, Volume 9, Issue 1, Special Issue of the 35th Euromicro Conference on Real-Time Systems (ECRTS 2023)


Abstract
We propose here solutions to the FMTV 2015 challenge of a distributed video processing system using four different formalisms, as well as the description of the challenge itself. This artifact contains several solutions to various subchallenges, and instructions and scripts to reproduce these results smoothly.

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Sebastian Altmeyer, Étienne André, Silvano Dal Zilio, Loïc Fejoz, Michael González Harbour, Susanne Graf, J. Javier Gutiérrez, Rafik Henia, Didier Le Botlan, Giuseppe Lipari, Julio Medina, Nicolas Navet, Sophie Quinton, Juan M. Rivas, and Youcheng Sun. From FMTV to WATERS: Lessons Learned from the First Verification Challenge at ECRTS (Artifact). In Special Issue of the 35th Euromicro Conference on Real-Time Systems (ECRTS 2023). Dagstuhl Artifacts Series (DARTS), Volume 9, Issue 1, pp. 4:1-4:6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)


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@Article{altmeyer_et_al:DARTS.9.1.4,
  author =	{Altmeyer, Sebastian and Andr\'{e}, \'{E}tienne and Dal Zilio, Silvano and Fejoz, Lo\"{i}c and Harbour, Michael Gonz\'{a}lez and Graf, Susanne and Guti\'{e}rrez, J. Javier and Henia, Rafik and Le Botlan, Didier and Lipari, Giuseppe and Medina, Julio and Navet, Nicolas and Quinton, Sophie and Rivas, Juan M. and Sun, Youcheng},
  title =	{{From FMTV to WATERS: Lessons Learned from the First Verification Challenge at ECRTS (Artifact)}},
  pages =	{4:1--4:6},
  journal =	{Dagstuhl Artifacts Series},
  ISSN =	{2509-8195},
  year =	{2023},
  volume =	{9},
  number =	{1},
  editor =	{Altmeyer, Sebastian and Andr\'{e}, \'{E}tienne and Dal Zilio, Silvano and Fejoz, Lo\"{i}c and Harbour, Michael Gonz\'{a}lez and Graf, Susanne and Guti\'{e}rrez, J. Javier and Henia, Rafik and Le Botlan, Didier and Lipari, Giuseppe and Medina, Julio and Navet, Nicolas and Quinton, Sophie and Rivas, Juan M. and Sun, Youcheng},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DARTS.9.1.4},
  URN =		{urn:nbn:de:0030-drops-180257},
  doi =		{10.4230/DARTS.9.1.4},
  annote =	{Keywords: Verification challenge, industrial use case, end-to-end latency, real-time systems, response time analysis}
}
Document
Invited Paper
From FMTV to WATERS: Lessons Learned from the First Verification Challenge at ECRTS (Invited Paper)

Authors: Sebastian Altmeyer, Étienne André, Silvano Dal Zilio, Loïc Fejoz, Michael González Harbour, Susanne Graf, J. Javier Gutiérrez, Rafik Henia, Didier Le Botlan, Giuseppe Lipari, Julio Medina, Nicolas Navet, Sophie Quinton, Juan M. Rivas, and Youcheng Sun

Published in: LIPIcs, Volume 262, 35th Euromicro Conference on Real-Time Systems (ECRTS 2023)


Abstract
We present here the main features and lessons learned from the first edition of what has now become the ECRTS industrial challenge, together with the final description of the challenge and a comparative overview of the proposed solutions. This verification challenge, proposed by Thales, was first discussed in 2014 as part of a dedicated workshop (FMTV, a satellite event of the FM 2014 conference), and solutions were discussed for the first time at the WATERS 2015 workshop. The use case for the verification challenge is an aerial video tracking system. A specificity of this system lies in the fact that periods are constant but known with a limited precision only. The first part of the challenge focuses on the video frame processing system. It consists in computing maximum values of the end-to-end latency of the frames sent by the camera to the display, for two different buffer sizes, and then the minimum duration between two consecutive frame losses. The second challenge is about computing end-to-end latencies on the tracking and camera control for two different values of jitter. Solutions based on five different tools - Fiacre/Tina, CPAL (simulation and analysis), IMITATOR, UPPAAL and MAST - were submitted for discussion at WATERS 2015. While none of these solutions provided a full answer to the challenge, a combination of several of them did allow to draw some conclusions.

Cite as

Sebastian Altmeyer, Étienne André, Silvano Dal Zilio, Loïc Fejoz, Michael González Harbour, Susanne Graf, J. Javier Gutiérrez, Rafik Henia, Didier Le Botlan, Giuseppe Lipari, Julio Medina, Nicolas Navet, Sophie Quinton, Juan M. Rivas, and Youcheng Sun. From FMTV to WATERS: Lessons Learned from the First Verification Challenge at ECRTS (Invited Paper). In 35th Euromicro Conference on Real-Time Systems (ECRTS 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 262, pp. 19:1-19:18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)


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@InProceedings{altmeyer_et_al:LIPIcs.ECRTS.2023.19,
  author =	{Altmeyer, Sebastian and Andr\'{e}, \'{E}tienne and Dal Zilio, Silvano and Fejoz, Lo\"{i}c and Harbour, Michael Gonz\'{a}lez and Graf, Susanne and Guti\'{e}rrez, J. Javier and Henia, Rafik and Le Botlan, Didier and Lipari, Giuseppe and Medina, Julio and Navet, Nicolas and Quinton, Sophie and Rivas, Juan M. and Sun, Youcheng},
  title =	{{From FMTV to WATERS: Lessons Learned from the First Verification Challenge at ECRTS}},
  booktitle =	{35th Euromicro Conference on Real-Time Systems (ECRTS 2023)},
  pages =	{19:1--19:18},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-280-8},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{262},
  editor =	{Papadopoulos, Alessandro V.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ECRTS.2023.19},
  URN =		{urn:nbn:de:0030-drops-180486},
  doi =		{10.4230/LIPIcs.ECRTS.2023.19},
  annote =	{Keywords: Verification challenge, industrial use case, end-to-end latency}
}
Document
Implementation of Memory Centric Scheduling for COTS Multi-Core Real-Time Systems

Authors: Juan M. Rivas, Joël Goossens, Xavier Poczekajlo, and Antonio Paolillo

Published in: LIPIcs, Volume 133, 31st Euromicro Conference on Real-Time Systems (ECRTS 2019)


Abstract
The demands for high performance computing with a low cost and low power consumption are driving a transition towards multi-core processors in many consumer and industrial applications. However, the adoption of multi-core processors in the domain of real-time systems faces a series of challenges that has been the focus of great research intensity during the last decade. These challenges arise in great part from the non real-time nature of the hardware arbiters that schedule the access to shared resources, such as the main memory. One solution proposed in the literature is called Memory Centric Scheduling, which defines a separate software scheduler for the sections of the tasks that will access the main memory, hence circumventing the low level unpredictable hardware arbiters. Several Memory Centric schedulers and associated theoretical analyses have been proposed, but as far as we know, no actual implementation of the required OS-level underpinnings to support dynamic event-driven Memory Centric Scheduling has been presented before. In this paper we aim to fill this gap, targeting cache based COTS multi-core systems. We will confirm via measurements the main theoretical benefits of Memory Centric Scheduling (e.g. task isolation). Furthermore, we will describe an effective schedulability analysis using concepts from distributed systems.

Cite as

Juan M. Rivas, Joël Goossens, Xavier Poczekajlo, and Antonio Paolillo. Implementation of Memory Centric Scheduling for COTS Multi-Core Real-Time Systems. In 31st Euromicro Conference on Real-Time Systems (ECRTS 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 133, pp. 7:1-7:23, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)


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@InProceedings{rivas_et_al:LIPIcs.ECRTS.2019.7,
  author =	{Rivas, Juan M. and Goossens, Jo\"{e}l and Poczekajlo, Xavier and Paolillo, Antonio},
  title =	{{Implementation of Memory Centric Scheduling for COTS Multi-Core Real-Time Systems}},
  booktitle =	{31st Euromicro Conference on Real-Time Systems (ECRTS 2019)},
  pages =	{7:1--7:23},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-110-8},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{133},
  editor =	{Quinton, Sophie},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ECRTS.2019.7},
  URN =		{urn:nbn:de:0030-drops-107448},
  doi =		{10.4230/LIPIcs.ECRTS.2019.7},
  annote =	{Keywords: real-time, multi-core, memory centric, predictability, implementation, rtos}
}
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