Reference Guide

Simcenter STAR-CCM+ Performance
15 Dell EMC Ready Solutions for HPC Digital Manufacturing with AMD EPYC™ Processors—Siemens’ Simcenter
STAR-CCM+™ Performance
Figure 5 Simcenter STAR-CCM+ Parallel Scaling—AMD EPYC 7452
Figure 5 presents the parallel scalability when running STAR-CCM+ with up to eight CBB nodes configured
with AMD EPYC 7452 processors and ConnectX-6 HDR100 InfiniBand. All processor cores in each server
were used when running these benchmarks. The performance at each node count is presented relative to the
performance of a single node.
The parallel scalability for these benchmarks is as expected, with some models demonstrating super-linear
scaling. Super-linear scaling is usually due to cache effects, such as when more of the active data fits into
cache as the number of nodes used increases. The TurboCharger benchmark does not scale as well as the
other benchmarks, but this is expected due to the model size and physics of this benchmark.
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Performance Relative to One Node
Number of Nodes
Simcenter STAR-CCM+ Parallel Scaling—AMD EPYC 7452
civil_trim_20m EglinStoreSeparation
EmpHydroCyclone_30M EmpHydroCyclone13m
HlMach10Sou KcsWithPhysics
LeMans_100M LeMans_100M_Coupled
LeMans_514M_Coupled lemans_poly_17m
reactor_9_million SlidingMorphingNopostHelicopter
TurboCharger vtmBenchmark_178M
VtmUhoodFanHeatx68m