IThe Visual Display of ~ Parallel Performance ~ Data

, A high-level abstract model 1 lets visualization designers create displays in an integrated environment. The model directly links these displays to parallel ( performance models. T he primary motivation for using parallel computer systems is their high performance potential, but that potential is notori- ously difficult to realize, and users often must analyze and tune parallel program performance. Parallel systems can be instrumented to provide ample feedback on program behavior, but because of the volume and complexity of the resulting performance data, interpreting these sys-tems can be extremely difficult. Hence, performance tools are needed to help bridge the gap between raw performance data and significant per-formance improvements. Data visualization has proved effective in deciphering many types o