Features in 6/8/94 version of ParaGraph added since last major netlib revision of 12/4/92: 0. Changed to "new" PICL tracefile format documented in ORNL/TM-12125. A tracefile format converter is provided to maintain backward compatibility with earlier versions of PICL. 1. Replaced "scale width" parameter, which some users found confusing, by "magnification" parameter, which should be more intuitively appealing, and is also independent of window resizing. 2. Enhanced support for monochrome mode in Task displays. These displays now provide eight distinct stipple patterns in monochrome, which is especially helpful for publishing black and white hardcopies with large numbers of tasks. 3. Additional choices for distance function implemented, including 1-D and 2-D mesh and torus, binary tree, quadtree, and unit distance. Previously, only Hamming distance was supported. Distance traveled, i.e., the number of hops in the network between source and destination, is one of the criteria for color-coding messages in some displays, and is also tallied in statistical summaries of communication traffic. 4. Reset button added to control section of main menu. This button clears all displays and returns to beginning of current tracefile, without restarting the animation. 5. User-defined layout option added to Animation display. This feature allows the use of the mouse to design an arbitrary arrangement of the nodes in the Animation display. The layout can be saved in a file for future reuse. 6. New Streak display added. This display graphically depicts the current "winning" or "losing" streak by each processor, where winning means busy and losing means idle. 7. Kiviat Diagram improved. The Kiviat diagram has been modified so that the user can select whether the utilization plotted is to include only busy time or both busy and overhead. The Kiviat diagram is also updated more frequently now, giving it a somewhat smoother appearance. 8. Statistical Summary improved. Several new items have been added to the non-graphical Statistical Summary display. These include maxima, minima, and averages for transit times, distance traveled, and overhead incurred for messages on a per node and aggregate basis. In addition, a scroll bar has been added to permit browsing of the entire array of statistics for larger numbers of processors. 9. Trace file directory browser added. A new window has been added that displays the names of trace files available in a directory whose path name is supplied by the user. Trace files are selected for processing by clicking on the corresponding file name in the window. 10. Bidirectional selection buttons. Selection buttons now cycle forward or backward through the sequence of choices, depending on which mouse button is pressed. 11. Optional renaming of base window. A command-line flag has been added for specifying a name for the main menu window. This is useful for distinguishing multiple instances of ParaGraph when running them simultaneously. 12. Several more bugs have been fixed, including some that appeared only on workstations that we do not normally use. The thoroughness of our testing on various workstations is in approximately the following order: Sun, IBM, SGI, HP, DEC. This primarily reflects our ease of access to the respective machines. New features in 12/4/92 version of ParaGraph added since previous netlib version of 8/26/91: 1. New Network display added. A new Network display has been added that depicts interprocessor communication in terms of various interconnection network topologies, including butterfly, hypercube, omega, baseline, binary tree, quadtree, mesh, and crossbar networks. Message routing through intermediate processors is explicitly depicted, and the physical network links are color coded by the amount of traffic they carry, so that "hot spots" are clearly visible. 2. Mesh layout for Animation. The Animation display now has a 2-D array layout for the nodes in addition to the original circular layout. This should be helpful for viewing grid based computations and for machines having a mesh network topology. 3. More layouts for Hypercube display. Several new node configurations have been added to the Hypercube display, bringing the total to more than 20. 4. Global communication. Global sends (e.g., sends with destination -1 on some machines) are now supported, both logically and pictorially. 5. Slow motion control. A "slider" has been added to control animation speed. ParaGraph cannot be speeded up (since by default it already draws as fast as the workstation permits), so this control in effect provides "slow motion" replay, if desired. The slider control can be changed dynamically to change speeds during the run. 6. Arbitrary number of nodes. ParaGraph now depicts the actual number of nodes used, rather than rounding up to the next higher power of two. All but one of the displays support at least 128 nodes, and many support up to 512 nodes. 7. Environment files. A user can now save a record of a preferred setup for ParaGraph (which displays are open, various parameter settings, etc.) so that it can be reestablished automatically on subsequent uses of ParaGraph. 8. User customization. The colors used to indicate tasks, as well as the ordering of the processors, are now user specifiable by means of files containing tables of relevant information. The nodes can even be given user-specified names instead of numbers, if desired. Single step mode has been generalized to allow a user-selected step increment. 9. User-defined displays. Support for user-defined displays has been substantially improved. ParaGraph now supports multiple user-defined displays, which, if present, now have their own separate menu. Moreover, the user-defined displays are now much more flexible in how they can be used (e.g., they can accept user input via mouse clicks, keyboard, etc.) 10. Trace display improved. The Trace display now shows the current trace record whenever it is opened, rather than having to start from the beginning of the tracefile in order to catch a given trace record for debugging or to pinpoint some specific event. 11. Color coding expanded. In displays where messages are color coded (e.g., Comm Matrix, Spacetime), the messages can now optionally be color coded by type or by distance as well as by length. 12. Coordinate information display. Many of the displays now provide additional information (such as user coordinates) in response to mouse clicks. This information is printed in a separate window provided for this purpose. 13. Data output option. Data from the displays can now be recorded numerically in output files. This is useful for subsequent analysis or for transferring data to other graphics packages. 14. Keyboard input. Keyboard input is now handled more robustly, and in particular it is echoed in reverse video to highlight changes and to indicate when they take effect (by reverting to normal video). 15. Interactive responsiveness. The interactive responsiveness of ParaGraph has been significantly improved. It is much easier now to get its attention when it is grinding away on a long tracefile. 16. Robustness. ParaGraph now does more checking to detect errors in the tracefile and copes with many errors more gracefully. It prints more meaningful error messages and optionally pauses when an error is detected in the tracefile. ParaGraph is still far from bulletproof, but it's robustness has been significantly improved. 17. Bug fixes. Numerous bugs in the last official netlib release, most of which were fairly obscure, have been fixed.