Real Time Visualization and Steering of Large Scale Parallel Simulations

Tonkal, Ozan Çağrı
Pehlivan, Sercan
Sezer Uzol, Nilay
İşler, Veysi
While a tremendous amount of work has gone into developing Computational Fluid Dynamics(CFD) software, little has been done to develop computational steering and visualization tools thatcan be easily integrated with this software. Computational steering can be used to visualize CFD solutions while they are being computed and change simulation parameters “on the fly.” In this paper we explore the use of the general-purpose computational steering software (POSSE) coupledwith a parallel, 3-D Navier-Stokes flow solver (PUMA2). In our approach, simulations can be runon parallel computers while steering and visualization is performed remotely through a client-serverapproach. The visualizations can be displayed on a variety of devices including virtual reality facilities (such as CAVEs) to better understand the intrinsic 3-D nature of the flow fields. Without such computational steering systems, the immediate and direct interaction with CFD simulations isimpossible. Instead, visualization of these simulations would be limited to the post-processing ofdata. However, for large-scale, parallel simulations, it is often not possible to post-process the entire flow field on a single computer because of memory and speed constraints. Therefore, interactivecomputational steering and monitoring systems are necessary to perform large-scale, parallel CFD simulations in a scalable way. We also note that our computational steering approach can help make simulations more like an experiment by enabling real-time interactivity with the simulation. Finally,we present visualization and steering results from several representative time-dependent, three-dimensional flow simulations


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Citation Formats
O. Ç. Tonkal, S. Pehlivan, N. Sezer Uzol, and V. İşler, “Real Time Visualization and Steering of Large Scale Parallel Simulations,” presented at the 11th International Symposium on Flow Visualization, 2004, Notre Dame, Indiana, USA, 2004, Accessed: 00, 2021. [Online]. Available: