Fakultät für Informatik der Technischen Universität München Informatik X: Rechnertechnik und Rechnerorganisation / Parallelrechnerarchitektur Prof. Dr. Arndt Bode , Prof. Dr. Hans Michael Gerndt

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DETOP
DEbugging TOol for Parallel and distributed systems

The goal of this project is to develop a source code debugging tool for parallel and distributed applications based on PVM that is capable of inspecting and manipulating a large number of processes at the same time. The project is based on previous debugger developments for multithreaded systems (PARIX), which have carried out in a cooperation with Parsytec. The current version of DETOP runs on top of OCM and supports PVM. A prototype version supporting MPI is developed in cooperation with the Parallel Computing Group at Institute of Computer Science (ICS), Stanislaw Staszic University of Mining and Metallurgy (AGH), Cracow, Poland A second major goal of the project is to integrate the debugger with a program flow visualizer, a checkpointing system and a deterministic execution controller to form a comfortable and powerful debugging environment (see here).

• Responsible: Roland Wismüller
• Involved: Marian Bubak (ICS-AGH), Wlodzimierz Funika (ICS-AGH), Bartosz Balis (ICS-AGH)

• Detop for PARIX: Jan. 1994 - Dec. 1996
• Start of adaption to PVM and OCM: Dec. 1996
• First implementation for OCM: May 1997
• Prototype of an interoperable environment of DETOP, VISTOP, CoCheck and Codex for PVM applications: March 2001

• On-line publications on the PARIX version of DETOP:
  • R. Wismüller, M. Oberhuber, J. Krammer, and O. Hansen. Interactive debugging and performance analysis of massively parallel applications. Parallel Computing, 22(3):415-442, March 1996.

  • M. Oberhuber and R. Wismüller. DETOP - An Interactive Debugger for PowerPC Based Multicomputers. In P. Fritzson and L. Finmo, editors, Parallel Programming and Applications, pages 170-183. IOS Press, Amsterdam, May 1995.

  For more publications, please see our general publications list.

• A demo version of DETOP for PVM on Sparc Solaris (1.5 MBytes)

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