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Documents authored by Edwards, Stephen A.


Document
Synchronous Programming (Dagstuhl Seminar 13471)

Authors: Stephen A. Edwards, Alain Girault, and Klaus Schneider

Published in: Dagstuhl Reports, Volume 3, Issue 11 (2014)


Abstract
Synchronous programming languages are programming languages with an abstract (logical) notion of time: The execution of such programs is divided into discrete reaction steps, and in each of these reactions steps, the program reads new inputs and reacts by computing corresponding outputs of the considered reaction step. The programs are called synchronous because all outputs are computed together in zero time within a step and because parallel components synchronize their reaction steps by the semantics of the languages. For this reason, the synchronous composition is deterministic, which is a great advantage concerning predictability, verification of system design, and embedded code generation. Starting with the definition of the classic synchronous languages Esterel, Lustre and Signal in the late 1980's, the research during the past 20 years was very fruitful and lead to new languages, compilation techniques, software and hardware architectures, as well as extensions, transformations, and interfaces to other models of computations, in particular to asynchronous and hybrid systems. This report is a summary of the Dagstuhl Seminar 13471 "Synchronous Programming", which took place during November 18-22, 2013, and which was the 20th edition of the yearly workshop of the synchronous programming community. The report contains the abstracts of the presentations given during the seminar in addition to the documents provided by the participants on the web pages of the seminar.

Cite as

Stephen A. Edwards, Alain Girault, and Klaus Schneider. Synchronous Programming (Dagstuhl Seminar 13471). In Dagstuhl Reports, Volume 3, Issue 11, pp. 117-143, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2014)


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@Article{edwards_et_al:DagRep.3.11.117,
  author =	{Edwards, Stephen A. and Girault, Alain and Schneider, Klaus},
  title =	{{Synchronous Programming (Dagstuhl Seminar 13471)}},
  pages =	{117--143},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2014},
  volume =	{3},
  number =	{11},
  editor =	{Edwards, Stephen A. and Girault, Alain and Schneider, Klaus},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.3.11.117},
  URN =		{urn:nbn:de:0030-drops-44395},
  doi =		{10.4230/DagRep.3.11.117},
  annote =	{Keywords: Synchronous Languages, Hybrid Systems, Formal Verification, Models of Computation, WCET-Analysis, Embedded Systems}
}
Document
09481 Abstracts Collection – SYNCHRON 2009

Authors: Albert Benveniste, Stephen A. Edwards, Edward Lee, Klaus Schneider, and Reinhard von Hanxleden

Published in: Dagstuhl Seminar Proceedings, Volume 9481, SYNCHRON 2009


Abstract
The 16th SYNCHRON workshop has been organized as Dagstuhl seminar 09481 from November 22-27, 2009. Online material of the seminar is available at the following web page: http://www.dagstuhl.de/de/programm/kalender/semhp/?semnr=09481

Cite as

Albert Benveniste, Stephen A. Edwards, Edward Lee, Klaus Schneider, and Reinhard von Hanxleden. 09481 Abstracts Collection – SYNCHRON 2009. In SYNCHRON 2009. Dagstuhl Seminar Proceedings, Volume 9481, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)


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@InProceedings{benveniste_et_al:DagSemProc.09481.1,
  author =	{Benveniste, Albert and Edwards, Stephen A. and Lee, Edward and Schneider, Klaus and von Hanxleden, Reinhard},
  title =	{{09481 Abstracts Collection – SYNCHRON 2009}},
  booktitle =	{SYNCHRON 2009},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9481},
  editor =	{Albert Benveniste and Stephen A. Edwards and Edward Lee and Klaus Schneider and Reinhard von Hanxleden},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09481.1},
  URN =		{urn:nbn:de:0030-drops-24340},
  doi =		{10.4230/DagSemProc.09481.1},
  annote =	{Keywords: Synchronous languages, Safety-critical real-time systems, Model-based design, Discrete and hybrid systems, Combining synchronous and asynchronous models, Formally consistent subsetting of UML, High-level hardware modeling and synthesis, Compilation and code synthesis for embedded systems}
}
Document
04491 Abstracts Collection – Synchronous Programming - SYNCHRON'04

Authors: Stephen A. Edwards, Nicholas Halbwachs, Reinhard von Hanxleden, and Thomas Stauner

Published in: Dagstuhl Seminar Proceedings, Volume 4491, Synchronous Programming - SYNCHRON'04 (2005)


Abstract
From 28.11.04 to 03.12.04, the Dagstuhl Seminar Perspectives Workshop 04491 ``Synchronous Programming - SYNCHRON'04'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.

Cite as

Stephen A. Edwards, Nicholas Halbwachs, Reinhard von Hanxleden, and Thomas Stauner. 04491 Abstracts Collection – Synchronous Programming - SYNCHRON'04. In Synchronous Programming - SYNCHRON'04. Dagstuhl Seminar Proceedings, Volume 4491, pp. 1-14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)


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@InProceedings{edwards_et_al:DagSemProc.04491.1,
  author =	{Edwards, Stephen A. and Halbwachs, Nicholas and von Hanxleden, Reinhard and Stauner, Thomas},
  title =	{{04491 Abstracts Collection – Synchronous Programming - SYNCHRON'04}},
  booktitle =	{Synchronous Programming - SYNCHRON'04},
  pages =	{1--14},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2005},
  volume =	{4491},
  editor =	{Stephen A. Edwards and Nicolas Halbwachs and Reinhard v. Hanxleden and Thomas Stauner},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.04491.1},
  URN =		{urn:nbn:de:0030-drops-1961},
  doi =		{10.4230/DagSemProc.04491.1},
  annote =	{Keywords: Synchronous languages , executive summary , Esterel , Lustre , Signal , semantics , programming languages , real-time systems}
}
Document
04491 Executive Summary – Synchronous Programming - SYNCHRON'04

Authors: Stephen A. Edwards, Nicholas Halbwachs, Reinhard von Hanxleden, and Thomas Stauner

Published in: Dagstuhl Seminar Proceedings, Volume 4491, Synchronous Programming - SYNCHRON'04 (2005)


Abstract
This seminar was the 11th in a series of semi-annual workshops on the Synchronous Languages (Esterel, Lustre, and Signal). These languages were invented in the early 1980's to make the programming of reactive systems easier. The goal of the seminar was to bring together researchers and practitioners of synchronous programming, and furthermore to reach out to relevant related areas and industrial users.

Cite as

Stephen A. Edwards, Nicholas Halbwachs, Reinhard von Hanxleden, and Thomas Stauner. 04491 Executive Summary – Synchronous Programming - SYNCHRON'04. In Synchronous Programming - SYNCHRON'04. Dagstuhl Seminar Proceedings, Volume 4491, pp. 1-7, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)


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@InProceedings{edwards_et_al:DagSemProc.04491.2,
  author =	{Edwards, Stephen A. and Halbwachs, Nicholas and von Hanxleden, Reinhard and Stauner, Thomas},
  title =	{{04491 Executive Summary – Synchronous Programming - SYNCHRON'04}},
  booktitle =	{Synchronous Programming - SYNCHRON'04},
  pages =	{1--7},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2005},
  volume =	{4491},
  editor =	{Stephen A. Edwards and Nicolas Halbwachs and Reinhard v. Hanxleden and Thomas Stauner},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.04491.2},
  URN =		{urn:nbn:de:0030-drops-1959},
  doi =		{10.4230/DagSemProc.04491.2},
  annote =	{Keywords: Synchronous languages , executive summary , Esterel , Lustre , signal , semantics , programming languages , real-time systems}
}
Document
SHIM: A Language for Hardware/Software Integration

Authors: Stephen A. Edwards

Published in: Dagstuhl Seminar Proceedings, Volume 4491, Synchronous Programming - SYNCHRON'04 (2005)


Abstract
Virtually every system designed today is an amalgam of hardware and software. Unfortunately, software and circuits that communicate across the hardware/software boundary are tedious and error-prone to create. This suggests a more automatic way to synthesize them. I present the SHIM language, which combines imperative C-like semantics for software and RTL-like semantics for hardware to allow a unified description of hardware/software systems. Hardware processes and software functions communicate through shared variables, hardware for which is automatically synthesized by the SHIM compiler, which generates C and synthesizable VHDL. I demonstrate the effectiveness of the language by re-implementing an I2C bus controller. The SHIM source is half the size of an equivalent manual implementation, slightly faster, and has a smaller memory footprint. Partial and complete hardware implementations in SHIM are also presented, showing that SHIM is succinct and effective.

Cite as

Stephen A. Edwards. SHIM: A Language for Hardware/Software Integration. In Synchronous Programming - SYNCHRON'04. Dagstuhl Seminar Proceedings, Volume 4491, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2005)


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@InProceedings{edwards:DagSemProc.04491.5,
  author =	{Edwards, Stephen A.},
  title =	{{SHIM: A Language for Hardware/Software Integration}},
  booktitle =	{Synchronous Programming - SYNCHRON'04},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2005},
  volume =	{4491},
  editor =	{Stephen A. Edwards and Nicolas Halbwachs and Reinhard v. Hanxleden and Thomas Stauner},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.04491.5},
  URN =		{urn:nbn:de:0030-drops-1580},
  doi =		{10.4230/DagSemProc.04491.5},
  annote =	{Keywords: Hardware/software codesign , synchronous , asynchronous , language design , integration}
}
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