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Claus Braun

Name:

Dipl.-Inform. Claus Braun

Address:

University of Stuttgart
Institute of Computer Architecture and Computer Engineering
Pfaffenwaldring 47
D-70569 Stuttgart
Germany

Room:

3.171

Telephone:

(+49) (0)711 / 685-88407

Telefax:

(+49) (0)711 / 685-88288

E-Mail:

claus.braun@iti.uni-stuttgart.de


 

Projects

SimTech: Cluster of Excellence "Simulation-Technology": Mapping Simulation Algorithms to NoC MPSoC Computers

Projectpage: Cluster of Excellence "Simulation-Technology": Mapping Simulation Algorithms to NoC MPSoC Computers

Technology scaling of nanoelectronic circuits currently introduces a fundamental paradigm shift of architectures for high-performance computing. Due to power and noise issues, single chip architectures have to gain increased performance by increased parallelism instead of increased frequency. Goal of this project is a methodology to map compute intensive portions of simulation algorithms to configurable Network-on-Chip Multi-Processor System on a Chip (NoC MPSoCs).

since 06.2008, SimTech Cluster of Excellence    

OTERA: Online Test Strategies for Reliable Reconfigurable Architectures

Projectpage: Online Test Strategies for Reliable Reconfigurable Architectures

Dynamically reconfigurable architectures enable a major acceleration of diverse applications by changing and optimizing the structure of the system at runtime. Permanent and transient faults threaten the correct operation of such an architecture. This project aims to increase dependability of runtime reconfigurable systems by a novel system-level strategy for online tests and online adaptation to an impaired state. This will be achieved by (a) scheduling such that tests for reconfigurable resources are executed with minimal performance impact, (b) resource management such that partially faulty resources are used for components which do not require the faulty elements, and (c) online monitoring and error checking. To ensure reliable runtime reconfiguration, each reconfiguration process is thoroughly tested by a novel and efficient combination of online structural and functional tests. Compared to existing fault-tolerance approaches, our proposal avoids the large hardware overhead of structural redundancy schemes. The saved resources are available for further application acceleration. Still, the proposed scheme covers faults in the fabric, in the reconfigured application logic and errors in the process of reconfiguration. 

since 10.2010, DFG-Project: WU 245/10-1    

Publications

  • Module Diversification – A Design Method for Reliable Reconfigurable Architectures
    H. Zhang, L. Bauer, M.A. Kochte, E. Schneider, C. Braun, M.E. Imhof, H.-J. Wunderlich and J. Henkel
    to appear in IEEE International Test Conference (ITC)

  • Test Strategies for Reliable Runtime Reconfigurable Architectures
    L. Bauer, C. Braun, M.E. Imhof, M.A. Kochte, E. Schneider, H. Zhang, J. Henkel, H.-J. Wunderlich
    to appear in IEEE Transactions on Computers, 2013

  • Acceleration of Monte-Carlo Molecular Simulations on Hybrid Computing Architectures
    C. Braun, S. Holst, J.M. Castillo, J. Gross, and H.-J. Wunderlich
    to appear in Proc. 30th IEEE International Conference on Computer Design, ICCD 2012, Montreal, Canada, 30.9-3.10., 2012

  • Parallel Simulation of Apoptotic Receptor-Clustering on GPGPU Many-Core Architectures
    C. Braun, M. Daub, A. Schöll, G. Schneider, and H.-J. Wunderlich
    to appear in Proc. IEEE International Conference on Bioinformatics and Biomedicine, BIBM 2012, Philadelphia, USA, 4-7 October, 2012

  • Transparent Structural Online Test for Reconfigurable Systems
    M. S. Abdelfattah, L. Bauer, C. Braun, M. E. Imhof, M. A. Kochte, H. Zhang, J. Henkel, and H.-J. Wunderlich
    Proc. 18th IEEE International On-Line Testing Symposium (IOLTS12), Sitges, Spain, June 27-29, 2012, pp. 37-42

  • OTERA: Online Test Strategies for Reliable Reconfigurable Architectures
    L. Bauer, C. Braun, M.E. Imhof, M.A. Kochte, H. Zhang, H.-J. Wunderlich, and J. Henkel
    NASA/ESA Conference on Adaptive Hardware and Systems (AHS12), Nuremberg, Germany, June 25-28, 2012, pp. 38-45

  • Reliable Simulations on Many-Core Architectures
  • C. Braun, H.-J. Wunderlich
    International Conference on Simulation Technology (SimTech 2011), Stuttgart, Germany, June 14-17, 2011

  • Algorithmen-basierte Fehlertoleranz für Many-Core-Architekturen
  • C. Braun, H.-J. Wunderlich
    it - Information Technology, Vol. 52, No. 4, August 2010

  • Algorithm-based fault tolerance for many-core architectures
  • C. Braun, H.-J. Wunderlich
    15th IEEE European Test Symposium (ETS), Praha, Czech Republic, May 24-28, 2010

Teaching

Lectures and Exercises

Seminars

SS 2012

Reconfigurable Hardware Architectures

SS 2011

Safety-critical Hardware/Software Systems

Parallel Programming (SimTech GS Seminar)

WS 2009

Grundlagen der Rechnerarchitektur, Advanced Processor Architecture

SS 2009

Reliable Networks-On-Chip in the Many-Core Era

WS 2008

Grundlagen der Rechnerarchitektur, Advanced Processor Architecture

Master/Diploma Theses and Student Research Projects

SS2012

Online Self-Test Wrapper for Runtime-Reconfigurable Systems
Master Thesis, J. Wang, 03.12.2012 - 02.06.2013

WS2012

Framework für beschleunigte Monte Carlo Molekularsimulationen auf hybriden Architekturen
Studienarbeit, S. Halder, 01.06.2012 - 01.12.2012

WS2012

Effiziente mehrwertige Logiksimulation verzögerungsbehafteter Schaltungen auf datenparallelen Architekturen
Diplomarbeit, A. Schöll, 01.06.2012 - 01.12.2012

SS2012

Ebenenübergreifende Simulation des HaPra-Prozessors
Software-Praktikum, A. Milutinovic

WS2011

Parallele Partikelsimulation auf GPGPU-Architekturen zur Evaluierung von Apoptose-Signalwegen
Studienarbeit, A. Schöll, 01.09.2011 - 02.03.2012

SS2011

Evaluation of Advanced Techniques for Structural FPGA Self-Test
Master Thesis, M. Abdelfattah, 01.03.2011 - 31.08.2011

Implementing Density Functional Theory Methods on GPGPU Accelerators
Master Thesis, B. M. Gosswami, 01.05.2011 - 31.10.2011

WS2009

Algorithmen-basierte Fehlertoleranz in Many-Core Systemen
Softwarepraktikum, D. Pfander, S. Kanis, 01.08.2009 - 28.02.2010


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