MPI scalability of a large memory LES code
by Mesbah Uddin, Andew Pollard
International Journal of High Performance Computing and Networking (IJHPCN), Vol. 4, No. 5/6, 2006

Abstract: Large Eddy Simulations (LES) of co-flowing round jets with 33.6 million grid points are carried out using 16 Sun 1 GHz UltraSPARC III Cu processors. An in-depth processor scalability analysis is carried out for an MPI based code for a finite-volume solution of time dependent Navier-Stokes equations. Particular attention is paid to the effect of initial conditions on the spatial development of the co-flowing jet at a Reynolds number of 7,300. The evolution of the turbulence structures is quantified using various discrimination techniques, which compared well with the flow visualisation experiments of Villermaux et al. (1998).

Online publication date: Tue, 01-May-2007

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