Benchmarking the CGNS I/O Performance
Thomas Häuser · 46th AIAA Aerospace Sciences Meeting and Exhibit · 2008
Linux clusters can provide a viable and more cost e ective alternative to conventional supercomputers for the purposes of computational uid dynamics (CFD). In some cases, the Linux supercluster is replacing the conventional supercomputer as a large-scale, shared-use machine. In other cases, smaller clusters are providing dedicated platforms for CFD computations. One important, often overlooked, issue for large, three dimensional time-dependent simulations is the input and output performance of the CFD solver. The development of the CFD General Notation System (CGNS) (see ) has brought a standardized and robust data format to the CFD community, enabling the exchange of information between the various stages of numerical simulations. This paper presents detailed benchmarks of the serial and parallel I/O performance of the CGNS software. The performance on serial and parallel le systems will be discussed in this paper.