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Documents authored by Wendt, Manuel

Document
DOI: 10.4230/DagSemProc.07041.3
07041 Working Group – Towards Interfaces for Integrated Performance and Power Analysis and Simulation

Authors: Chris Bleakley, Tom Clerckx, Harald Devos, Matthias Grumer, Alex Janek, Ulrich Kremer, Christian W. Probst, Phillip Stanley-Marbell, Christian Steger, Vasanth Venkatachalam, and Manuel Wendt

Published in: Dagstuhl Seminar Proceedings, Volume 7041, Power-aware Computing Systems (2007)

Abstract
In the design and optimization of power-aware computing systems, it is often desired to estimate power consumption at various levels of abstraction, e.g., at the transistor, gate, RTL, behavioral or transaction levels. Tools for power estimation at these different levels of abstraction require specialized expertise, e.g., understanding of device physics for circuit-level power estimation, and as such are necessarily developed by different research communities. In the optimization of complete platforms however, it is desired to be able to obtain aggregate power and performance estimates for the different components of a system, and this requires the ability to model the system at a mixture of levels of abstraction. One approach to enabling such cross-abstraction modeling, is to define a mechanism for interchange of data between tools at different layers of abstraction, for both static analysis and simulation-based studies. This document presents preliminary discussions on the requirements of such an interface.
Cite as

Chris Bleakley, Tom Clerckx, Harald Devos, Matthias Grumer, Alex Janek, Ulrich Kremer, Christian W. Probst, Phillip Stanley-Marbell, Christian Steger, Vasanth Venkatachalam, and Manuel Wendt. 07041 Working Group – Towards Interfaces for Integrated Performance and Power Analysis and Simulation. In Power-aware Computing Systems. Dagstuhl Seminar Proceedings, Volume 7041, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{bleakley_et_al:DagSemProc.07041.3,
  author =	{Bleakley, Chris and Clerckx, Tom and Devos, Harald and Grumer, Matthias and Janek, Alex and Kremer, Ulrich and Probst, Christian W. and Stanley-Marbell, Phillip and Steger, Christian and Venkatachalam, Vasanth and Wendt, Manuel},
  title =	{{07041 Working Group – Towards Interfaces for Integrated Performance and Power Analysis and Simulation}},
  booktitle =	{Power-aware Computing Systems},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7041},
  editor =	{Luca Benini and Naehyuck Chang and Ulrich Kremer and Christian W. Probst},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07041.3},
  URN =		{urn:nbn:de:0030-drops-11072},
  doi =		{10.4230/DagSemProc.07041.3},
  annote =	{Keywords: Power Estimation Tools, Simulation, Tool Interfaces}
}
Document
DOI: 10.4230/DagSemProc.07041.4
Automist - A Tool for Automated Instruction Set Characterization of Embedded Processors

Authors: Manuel Wendt, Matthias Grumer, Christian Steger, and Ulrich Neffe

Published in: Dagstuhl Seminar Proceedings, Volume 7041, Power-aware Computing Systems (2007)

Abstract
The steadily increasing performance of mobile devices also implies a rise in power consumption. To counteract this trend it is mandatory to accomplish software power optimizations based on accurate power consumption models characterized for the processor. This paper presents an environment for automated instruction set characterization based on physical power measurements. Based on a detailed instruction set description a testbench generator creates all needed test programs for a complete characterization. Afterwards those programs are executed by the processor and the energy consumption is measured. For an accurate energy measurement a high performance sampling technique has been established, which can be either clock or energy driven.
Cite as

Manuel Wendt, Matthias Grumer, Christian Steger, and Ulrich Neffe. Automist - A Tool for Automated Instruction Set Characterization of Embedded Processors. In Power-aware Computing Systems. Dagstuhl Seminar Proceedings, Volume 7041, pp. 1-10, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{wendt_et_al:DagSemProc.07041.4,
  author =	{Wendt, Manuel and Grumer, Matthias and Steger, Christian and Neffe, Ulrich},
  title =	{{Automist - A Tool for Automated Instruction Set Characterization of Embedded Processors}},
  booktitle =	{Power-aware Computing Systems},
  pages =	{1--10},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7041},
  editor =	{Luca Benini and Naehyuck Chang and Ulrich Kremer and Christian W. Probst},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07041.4},
  URN =		{urn:nbn:de:0030-drops-11097},
  doi =		{10.4230/DagSemProc.07041.4},
  annote =	{Keywords: Software energy estimation, automated processor characterization, testbench generator, current measurement, clock driven sampling, energy driven sampl}
}
Document
DOI: 10.4230/DagSemProc.07041.5
Compiler-based Software Power Peak Elimination on Smart Card Systems

Authors: Matthias Grumer, Manuel Wendt, Christian Steger, Reinhold Weiss, Ulrich Neffe, and Andreas Muehlberger

Published in: Dagstuhl Seminar Proceedings, Volume 7041, Power-aware Computing Systems (2007)

Abstract
RF-powered smart cards are widely used in different application areas today. For smart cards not only performance is an important attribute, but also the power consumed by a given application. The power consumed is heavily depending on the software executed on the system. The power profile, especially the power peaks, of an executed application influence the system stability and security. Flattening the power profile can thus increase the stability and security of a system. In this paper we present an optimization system that allows a reduction of power peaks based on a compiler optimization. The optimizations are done on different levels of the compiler. In the backend of the compiler we present new instruction scheduling algorithms. On the intermediate language level we propose the use of iterative compiling for reducing critical peaks.
Cite as

Matthias Grumer, Manuel Wendt, Christian Steger, Reinhold Weiss, Ulrich Neffe, and Andreas Muehlberger. Compiler-based Software Power Peak Elimination on Smart Card Systems. In Power-aware Computing Systems. Dagstuhl Seminar Proceedings, Volume 7041, pp. 1-9, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{grumer_et_al:DagSemProc.07041.5,
  author =	{Grumer, Matthias and Wendt, Manuel and Steger, Christian and Weiss, Reinhold and Neffe, Ulrich and Muehlberger, Andreas},
  title =	{{Compiler-based Software Power Peak Elimination on Smart Card Systems}},
  booktitle =	{Power-aware Computing Systems},
  pages =	{1--9},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7041},
  editor =	{Luca Benini and Naehyuck Chang and Ulrich Kremer and Christian W. Probst},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07041.5},
  URN =		{urn:nbn:de:0030-drops-11030},
  doi =		{10.4230/DagSemProc.07041.5},
  annote =	{Keywords: Software power optimization, compiler optimization, peak reduction}
}
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