LCB Working Group Home Page
Brief Description of the Project:
One particularly frustrating aspect of parallel programming is that when your
program crashes or hangs, it's difficult or impossible to determine how far
execution got. This is further aggravated by the fact that
when corefiles are available, the information they provide is often too
low-level for the
programmer to get a general picture of the status of the whole program.
The Lightweight Corefile Browser (LCB) offers a global, high-level view of
the program'ss state when it terminated. It offers a simple and convenient
way to determine answers to several critical questions:
- At what point in the source program did the culprit process fail and why?
- How did the culprit process get to that point?
- Is the culprit process the only one executing that routine? if not, which
are the others?
- What other routines were executing when the program terminated?
- How far in the source program did each process execute?
Graphical browsing capabilities allow users to navigate through the
potentially complex calling hierarchy of a program. By automatically
assimilating the details from tens or hundreds of processes and presenting
them in an abstracted summary form, LCB eliminates some of the
frustration in dealing with parallel program failures.
Last updated February 6, 1996.
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ome page
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