论文信息 - Investigation of Large Eddy Simulation Code Scaling Performance and Network Type Influence on a Linux PC Cluster

Investigation of Large Eddy Simulation Code Scaling Performance and Network Type Influence on a Linux PC Cluster

The parallel performance of a large eddy simulation computational fluid dynamics code was evaluated on a Pentium III PC cluster with 64 processors running under Linux. Scaling capability of the code and comparative code performance under Fast Ethernet, Myrinet, and Gigabit Ethernet were investigated. The code shows very good scalability for a scaled speedup test with wall clock time remaining practically constant for any number of processors. The code does not saturate the Fast Ethernet bandwidth. Whereas Myrinet demonstrates a lower difference between CPU and wall clock time, indicating more efficient interprocessor communication, its overall wall clock time is equal to or higher than for the code compiled for Fast Ethernet. Gigabit Ethernet shows a very slight advantage over Fast Ethernet.

Doyle D. Knight | Boris M. Chernyavsky

[1] Doyle Knight,et al. Large Eddy Simulations Using an Unstructured Grid Compressible Navier - Stokes Algorithm , 2000 .

[2] P. Roe. Approximate Riemann Solvers, Parameter Vectors, and Difference Schemes , 1997 .

[3] J. P. Boris,et al. New insights into large eddy simulation , 1992 .

[4] F. A. Seiler,et al. Numerical Recipes in C: The Art of Scientific Computing , 1989 .

[5] Doyle Knight,et al. Large Eddy Simulation of a Supersonic Compression Corner Part I , 2000 .

[6] G. Amdhal,et al. Validity of the single processor approach to achieving large scale computing capabilities , 1967, AFIPS '67 (Spring).

[7] Doyle Knight. A fully implicit Navier-Stokes algorithm using an unstructured grid and flux difference splitting , 1993 .

[8] William H. Press,et al. The Art of Scientific Computing Second Edition , 1998 .

[9] Doyle Knight,et al. Accurate three-dimensional unsteady flow simulation using unstructured grids , 1998 .

[10] Doyle Knight,et al. Compressible Large Eddy Simulation using Unstructured Grid: Supersonic Turbulent Boundary Layer and , 1999 .

[11] Doyle D. Knight,et al. Comparison of CFD Code Performance on SGI Power Onyx and Pentium Cluster , 2000, PDPTA.