Distributed Watchpoints: Debugging Large Multi-Robot Systems

Abstract— Tightly-coupled multi-agent systems such as modular robots frequently exhibit properties of interest that span multiple modules. These properties cannot easily be detected from any single module, though they might readily be detected by combining the knowledge of multiple modules. Testing for distributed conditions is especially important in debugging or verifying the correctness of software for modular robots. We have developed a technique we call distributed watchpoint triggers which can efficiently recognize such distributed conditions. Our watchpoint description language can handle a variety of temporal, spatial, and logical properties spanning multiple robots. This paper presents that language, describes our fullydistributed, online mechanism for detecting distributed conditions in a running system, and evaluates the performance of our implementation. We found that the performance of the system is highly dependent on the program being debugged, scales linearly with en...

• Type: Conference
• Year: 2007
• Where: ICRA
• Authors: Michael DeRosa, Jason Campbell, Padmanabhan Pillai, Seth Copen Goldstein, Peter Lee, Todd C. Mowry
• Keywords: Distributed Conditions, ICRA 2007, Modular Robots, Multiple Modules, Robotics