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Debuggers

Debuggers

• Xdbx

• Xmdb

• Others
  • XPDB - X windows Parallel DeBugger ie an X windows based parallel debugging tool for programs written using the SPPL parallel programming library

  • Mantis - a graphical debugger for the Split-C language.

• Graphical Programming Tools
  • HeNCE

  • Paragraph

  • Enterprise - an interactive graphical programming environment for designing, coding, debugging, testing, monitoring, profiling and executing programs in a distributed hardware environment.

Xdbx

• Xdbx is a graphical user interface to the dbx debugger(UNIX).

• Provides visual feedback and mouse input allowing the user:
  • to control program execution through breakpoints,

  • to examine and traverse the function control stack,

  • to display values of variables and data structures,

  • and to browse source files and functions.

• Availability: Xdbx is in the public domain and is available from the gopher server at:
  comics.scs. unr.edu

Xmdb

• Xmdb - a source compatible single processor implementation of PVM 3.x (Oak Ridge National Lab).

• Xmdb accesses the messages that are sent to the processes.

• Message queue management functions are incorporated in Xmdb:
  • these functions enable the user to control the execution of a program in a way suitable for debugging.

• The messages will be displayed to the user at every suspend point (SPoint) that occurs when the controlled process makes a pvm_recv() or pvm_barrier() call.

• Provides run-time automatic testing for undesirable race conditions.

• Symbolic debugging using node level sequential debuggers is integrated with Xmdb
  • makes Xmdb portable across machines, and enables Xmdb to work with different node level sequential debuggers.

• A window provides run-time help to the user depending upon the current situation of the executing program.

• URL: http://www-c8.lanl.gov/dist_comp2/mdb/mdb.html

ParaGraph

• A graphical display system for visualizing the behaviour and performance of parallel programs on message-passing parallel computers;
  • input is execution trace data provided by PICL.

• PICL optionally produces an execution trace during an actual run of a parallel program on a message-passing machine

• Resulting trace data can then be replayed pictorially with ParaGraph to display a dynamic, graphical depiction of the behaviour of the parallel program.

• Based on the X Window System and runs on a wide variety of graphical workstations.

• It uses no X toolkit and requires only Xlib.

• ParaGraph's execution is event driven, including both user-generated X Window events and trace events in the input data file provided by PICL

• Displays a dynamic depiction of the parallel program while also providing responsive interaction with the user.

HeNCE

• HeNCE - Heterogeneous Network Computing Environment:
  • an X-window based software environment designed to assist in the development of parallel programs

• Composed of integrated graphical tools for creating, compiling, executing, and analysing HeNCE programs.

• HeNCE relies on the PVM system for process initialization and communication.

• The drawing environment is called htool, is mouse-based and runs on workstations that support X windows (X11R4 or later).

• HeNCE, and the PVM package that it requires, are distributed free of charge via the Internet