2 Search Results for "Mix, Stefan"


Document
Isolation-Aware Timing Analysis and Design Space Exploration for Predictable and Composable Many-Core Systems

Authors: Behnaz Pourmohseni, Fedor Smirnov, Stefan Wildermann, and Jürgen Teich

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


Abstract
Composable many-core systems enable the independent development and analysis of applications which will be executed on a shared platform where the mix of concurrently executed applications may change dynamically at run time. For each individual application, an off-line DSE is performed to compute several mapping alternatives on the platform, offering Pareto-optimal trade-offs in terms of real-time guarantees, resource usage, etc. At run time, one mapping is then chosen to launch the application on demand. In this context, to enable an independent analysis of each individual application at design time, so-called inter-application isolation schemes are applied which specify temporal/spatial isolation policies between applications. State-of-the-art composable many-core systems are developed based on a fixed isolation scheme that is exclusively applied to every resource in every mapping of every application and use a timing analysis tailored to that isolation scheme to derive timing guarantees for each mapping. A fixed isolation scheme, however, heavily restricts the explored space of solutions and can, therefore, lead to suboptimality. Lifting this restriction necessitates a timing analysis that is applicable to mappings with an arbitrary mix of isolation schemes on different resources. To address this issue, in this paper, we (a) present an isolation-aware timing analysis that - unlike existing analyses - can handle multiple isolation schemes in combination within one mapping and delivers safe yet tight timing bounds by identifying and excluding interference scenarios that can never happen under the given combination of isolation schemes. Based on the timing analysis, we (b) present a DSE which explores the choices of isolation scheme per resource within each mapping and uses the proposed timing analysis for timing verification. Experimental results demonstrate that, for a variety of real-time applications and many-core platforms, the proposed approach achieves an improvement of up to 67% in the quality of delivered mappings compared to approaches based on a fixed isolation scheme.

Cite as

Behnaz Pourmohseni, Fedor Smirnov, Stefan Wildermann, and Jürgen Teich. Isolation-Aware Timing Analysis and Design Space Exploration for Predictable and Composable Many-Core Systems. In 31st Euromicro Conference on Real-Time Systems (ECRTS 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 133, pp. 12:1-12:24, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)


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@InProceedings{pourmohseni_et_al:LIPIcs.ECRTS.2019.12,
  author =	{Pourmohseni, Behnaz and Smirnov, Fedor and Wildermann, Stefan and Teich, J\"{u}rgen},
  title =	{{Isolation-Aware Timing Analysis and Design Space Exploration for Predictable and Composable Many-Core Systems}},
  booktitle =	{31st Euromicro Conference on Real-Time Systems (ECRTS 2019)},
  pages =	{12:1--12:24},
  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.2019.12},
  URN =		{urn:nbn:de:0030-drops-107491},
  doi =		{10.4230/LIPIcs.ECRTS.2019.12},
  annote =	{Keywords: Many-core systems, timing analysis, design space exploration (DSE), isolation scheme, predictability, composability}
}
Document
Assisting age related capabilities by ambient technology to prevent functional decline

Authors: Mehmet Gövercin, Richard Willmann, Gerd Lanfermann, Tobias Kraft, Stefan Mix, and Elisabeth Steinhagen-Thiessen

Published in: Dagstuhl Seminar Proceedings, Volume 7462, Assisted Living Systems - Models, Architectures and Engineering Approaches (2008)


Abstract
The elderly is characterized by age related capabilities and handicaps. Whereas age related capabilities like plasticity and adaptability on changing living conditions can lead to subjective well-being and support the recovery of limiting conditions like disease and disability, age related handicaps can enforce these conditions. Multimorbidity can lead to acute and chronic functional decline, especially when limiting conditions are enforced by age related handicaps. In a "circulus vitiosus" disease and disability threaten the independence of the elderly that leads to immobility, social isolation, depression and other health conditions with amplification and generation of new diseases. Ambient Technology has the potential to interrupt this "circulus vitiosus" by limiting age related handicaps, assist age related capabilities, prevent acute or chronic diseases and as a consequence can improve the quality of life of elderly and their care giving relatives. In this overview we demonstrate a brief summary of past experience with Information and Communication Technology (ICT) as part of Ambient Technology (AT) in the "TeleReha" project and ongoing approaches in the "Vitanet" project and the "FOG-1" project followed by a future considerations conducting ICT-Project in elderly.

Cite as

Mehmet Gövercin, Richard Willmann, Gerd Lanfermann, Tobias Kraft, Stefan Mix, and Elisabeth Steinhagen-Thiessen. Assisting age related capabilities by ambient technology to prevent functional decline. In Assisted Living Systems - Models, Architectures and Engineering Approaches. Dagstuhl Seminar Proceedings, Volume 7462, pp. 1-5, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2008)


Copy BibTex To Clipboard

@InProceedings{govercin_et_al:DagSemProc.07462.8,
  author =	{G\"{o}vercin, Mehmet and Willmann, Richard and Lanfermann, Gerd and Kraft, Tobias and Mix, Stefan and Steinhagen-Thiessen, Elisabeth},
  title =	{{Assisting age related capabilities by ambient technology to prevent functional decline}},
  booktitle =	{Assisted Living Systems - Models, Architectures and Engineering Approaches},
  pages =	{1--5},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2008},
  volume =	{7462},
  editor =	{Arthur I. Karshmer and J\"{u}rgen Nehmer and Hartmut Raffler and Gerhard Tr\"{o}ster},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.07462.8},
  URN =		{urn:nbn:de:0030-drops-14737},
  doi =		{10.4230/DagSemProc.07462.8},
  annote =	{Keywords: Ambient Technology (AT), Ambient Assisted Living (AAL), Information and Communication Technology (ICT), elderly, multimorbidity, quality of life}
}
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