Run-time visualization of program data
VIS '91 Proceedings of the 2nd conference on Visualization '91
Supporting runtime tool interaction for parallel simulations
SC '98 Proceedings of the 1998 ACM/IEEE conference on Supercomputing
Rule-based monitoring and steering of distributed scientific applications
International Journal of High Performance Computing and Networking
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Tools for parallel systems today range from specification over debugging to performance analysis and more. Typically, they help the programmers of parallel algorithms from the early development stages to a certain level of program optimization. However, in HPC (High Performance Computing) today the end-user of massively parallel CFD (Computational Fluid Dynamics)-programs has little or no support in his work. The scientific engineer who often runs his application on a parallel computer somewhere in the WAN (Wide Area Network) and visualizes the enormous amounts of simulation data on a graphical workstation in his LAN (Local Area Network) has needs which are by far not covered by state of the art visualization systems.The tool proposed here follows a strategy which differs completely from existing, batch-oriented, and strictly sequential methods of the working process in the application cycle of parallel HPC applications. It allows both on-line visualization and interactive program steering of massively parallel CFD-applications. The parameters of the mathematical model and the numerical methods build objects of a database which can be accessed by an object-oriented graphical user interface via visualization and modification operators. Experiences with this new tool concept VIPER (VIsualization of Parallel numerical simulation algorithms for Extended Research) applied on a real-world and industrial scientific application will be shown.