Woodcrest scaling problems? (Fluent part1)
Friday Nov 03, 2006
Does the Woodcrest have scaling issues now? It may be caused by the rush to increase core count without really considering design. On a 4 core/2chip Intel Woodcrest systems we are only seeing 3.0x to 3.3x on 4 cores -- this doesn't bode well for quad-core or larger systems made out of these. Couple this with the high-wattage of these chips (Tuesday's posting) and this chip may have issues?
Poor Woodcrest scaling & Performance on Fluent 6 Benchmark
| System | GHz/Chip | #cores | FL5L1 (scaling) | FL5L2 (scaling) |
|---|---|---|---|---|
| INTEL S5000XAL | 3.0GHz Xeon Woodcrest 5160 | 4-core 2-Socket | 631.8 (3.3x) | 400.0 (3.0x) |
| INTEL S5000XAL | 3.0GHz Xeon Woodcrest 5160 | 2-core 1-Socket | 372.8 (1.9x) | 226.0 (1.7x) |
| INTEL S5000XAL | 3.0GHz Xeon Woodcrest 5160 | 1-core | 194.0 (1.0x) | 133.0 (1.0x) |
Rating = No. of sequential runs of test case possible in 1 day, 86,400/(Total Elapsed Run Time in Seconds)
Fluent results at: http://www.fluent.com/software/fluent/fl5bench/flbench_6.2/fullres.htm
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