Guillermo H. Gonzalez

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This paper introduces use of the nova radial plot in the *Graph environment to display communication in data-parallel programs. The visualization system in *Graph plays a key role in understanding how virtual communication in data-parallel programs translates into physical communication, and in understanding how source code modi-cations and data layout can(More)
The execution performance of scientiic application programs on parallel systems depends critically upon exploiting data locality and balancing computation loads. We have developed an event-driven visualization and optimization tool for data-parallel programs, called *Graph, which helps programmers reduce the communication costs by providing data locality(More)
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