After the vectors are transformed to Fourier space, the Navier-Stokes calculations are applied to integrate the solution forward in time, and the final results are transformed back to physical space. The output file is written by all processors. Images A set of images constructed from a simulation of the unsteady turbulent wake of a circular Cylinder are provided by Ron Henderson at Caltech. Both the application source code and the required libraries are targeted to the specific platform to achieve the maximum possible performance. The application consists of approximately 10000 lines of C code, specifically targeted to the Intel Paragon.
Execution begins with a preprocessing segment.
Three input files are used to initialize the system. The first file contains parameters such as the Reynolds number, the number of mesh elements, the coordinates for each element, the number of curved edges, and the boundary conditions for each edge. The third data input file is the connectivity file. This information is used to setup the internal boundary system of the spectral element mesh. Additionally, the connectivity file is accessed using binary format.