Benchmarks STAR-CD V3240/V3260

LARGE A-Class DATASET

50 ITERATIONS
Linear solver: SCALAR-CGS
Solution method: STEADY STATE

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Cells	Mesh	Iterations	Solver	Solution
21,241,271	Trimmed Hexahedral	50	CGS	Steady State

PERFORMANCE TABLES

CRAY

IBM

SGI

PARALLEL PLOTS ELAPSED TIME (LOGSCALE)

CRAY

IBM

SGI

PARALLEL PLOTS SCALE-FACTORS (LOGSCALE)

IBM

System	No of Procs (NxP)	Elapsed Time (Secs)	Speedup Factor	Comments/Notes
CRAY XD1, 2 Opteron Dual Core AMD-275 2.2 GHz	256	279.81		CRAY XD1 RapidArray interconnect 1 RAP, 2 ports, single fabric, Fat Tree
CRAY XD1, 2 Opteron Dual Core AMD-275 2.2 GHz	128	569.35		CRAY XD1 RapidArray interconnect 1 RAP, 2 ports, single fabric, Fat Tree
CRAY XD1, 2 Opteron Dual Core AMD-275 2.2 GHz	64	1078.68		CRAY XD1 RapidArray interconnect 1 RAP, 2 ports, single fabric, Fat Tree
CRAY XD1, 2 Opteron Dual Core AMD-275 2.2 GHz	32	2136.46		CRAY XD1 RapidArray interconnect 1 RAP, 2 ports, single fabric, Fat Tree
CRAY XD1, 2 Opteron Dual Core AMD-275 2.2 GHz	16	4598.17		CRAY XD1 RapidArray interconnect 1 RAP, 2 ports, single fabric, Fat Tree
CRAY XD1, 2 Opteron Single Core AMD-248 2.2 GHz DDR 400	64	981.13		CRAY XD1 RapidArray interconnect 1 RAP, 2 ports
CRAY XD1, 2 Opteron Single Core AMD-248 2.2 GHz DDR 400	32	1833.47		CRAY XD1 RapidArray interconnect 1 RAP, 2 ports
CRAY XD1, 2 Opteron Single Core AMD-248 2.2 GHz DDR 400	16	3821.91		CRAY XD1 RapidArray interconnect 1 RAP, 2 ports
IBM p5-575 (POWER5) 2.2 GHz	64	715.02	49.83	Large pages + HPS (8)
IBM p5-575 (POWER5) 2.2 GHz	32	1106.94	32.19	Large pages + HPS (4)
IBM p5-575 (POWER5) 2.2 GHz	16	2196.94	16.21	Large pages + HPS (2)
IBM p5-575 (POWER5) 2.2 GHz	8	4820.20	7.39	Large pages + HPS (1)
IBM p5-575 (POWER5) 2.2 GHz	4	9382.02	3.79	Large pages + HPS (1)
IBM p5-575 (POWER5) 2.2 GHz	2	18806.93	1.89	Large pages + HPS (1)
IBM p5-575 (POWER5) 2.2 GHz	1	35634.10	1.00	Large pages + HPS (1)
SGI Altix 4700 Montecito Dual Core processor 1.6 GHz	256	207.00
SGI Altix 4700 Montecito Dual Core processor 1.6 GHz	128	348.00
SGI Altix 4700 Montecito Dual Core processor 1.6 GHz	64	670.00
SGI Altix 4700 Montecito Dual Core processor 1.6 GHz	32	1486.00
SGI Altix 4700 Montecito Dual Core processor 1.6 GHz	16	3325.00

DISCLAIMER
The data reported here has been supplied by the vendors of the respective hardware platforms listed, and though checked by the CD-adapco, we can make no warranties, implied or otherwise, with regard to the accuracy of the data. In addition the CD-adapco makes no recommendations as to the suitability or preference of one hardware platform over another with regards to STAR-CD or any other CD-adapco product.