Computational steering on distributed systems: Indoor comfort simulations as a case study of interactive CFD on supercomputers

Abstract

This paper presents the current state of a computational steering system for interactive computational fluid dynamics (CFD) simulations, allowing engineers to simulate interactively indoor climate and to evaluate human comfort. The tools presented support cooperative planning and design by providing means for interactively adding, removing and modifying geometry and boundary conditions online during a CFD simulation. To ensure interactivity and short-latency updates even for high-resolution runs the parallel Lattice–Boltzmann-based simulation kernel is optimized for high-performance computing systems. Emphasis is placed on the computational steering architecture, connecting a supercomputer with one or more visualization workstations. In particular, we show how a high-performance communication between simulation and visualization or steering front-end can be achieved together with preserving a flexible mechanism of on-the-fly attachment of multiple cooperation clients.

Keywords:

• Computational steering
• High performance computing
• Grid computing
• Computational fluid dynamics
• Lattice–Boltzmann method
• Collaborative engineering

Acknowledgements

The authors are grateful to the Bayerische Forschungsstiftung (Bavarian Research Foundation, http://www.forschungsstiftung.de), to KONWIHR and to the SIEMENS AG, Corporate Technology for financial support. Results presented in this paper are part of the research projects SimFas, ComfSim and ViSimLab.

Notes

^** http://www.inf.bauwesen.tu-muenchen.de

^¶ [email protected]

^§ [email protected]

^∥ [email protected]

^# [email protected]

^†† http://www.lrz.de

^† COMPAS: Co-operative Micro Processors in Single Address Space.

Additional information

Notes on contributors

Petra Wenisch

** ** http://www.inf.bauwesen.tu-muenchen.de

Christoph van Treeck

¶ ¶ [email protected] **

André Borrmann

§ § [email protected] **

Ernst Rank

∥ ∥ [email protected] **

Oliver Wenisch

# # [email protected] †† †† http://www.lrz.de