The industrial computational fluid dynamics code STAR-CD is extensively used in the automotive industry. Within the framework of the EUROPORT-1 program this code has been parallelised. An early version, nominally labeled STAR-HPC, has been used in the present study to perform calculations of engine coolant and intake flows and external vehicle aerodynamics on CRAY J90 and IBM SP2 machines. The last-named case was very large, involving around nine million cells. We show that substantial speedups and absolute performance levels are achievable on both machines, provided however that the processors are dedicated to the parallel code. We also indicate where further improvements can be achieved to both code and machine performances.
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