Enhancing the usability of parallel debuggers

The author addresses the design of a useful parallel debugger, i.e. one whose cost (in terms of programmer effort) is outweighed by the benefits of using it. The level of usefulness encompasses both the functionality the debugger provides and the presentation of relevant information gathered by the debugger. Specific features of parallel programming that make debugging such a difficult task have been examined. From this, an attempt has been made to determine what functionality must be provided to deal with these features effectively