Products: Abaqus/Standard Abaqus/AMS
Benefits: Enhancements to the AMS eigensolver improve performance for frequency extraction analyses.
Description: Enhancements in the reduced eigensolution phase of the AMS eigensolver deliver significantly improved performance for large-scale models requiring more than 3000 eigenmodes. Table 6–2 illustrates the performance improvements in the AMS eigensolver for two industrial models: Model 1 is a 2.8 million degree-of-freedom vehicle model, and Model 2 is a 9.2 million degree-of-freedom vehicle model. Both analyses were run on an HP Linux machine with dual 3.0 GHz Core 2 Duo processors and 16 GB of shared memory.
Table 6–2 Performance improvements in the AMS eigensolver.
| Model | Number of Degrees-of-Freedom | Abaqus 6.8 | Abaqus 6.9 | ||
|---|---|---|---|---|---|
| Number of Modes | Wall Clock Time (hh:mm:ss) | Number of Modes | Wall Clock Time (hh:mm:ss) | ||
| Model 1 | 2.8 million | 4231 | 02:13:14 | 4237 | 00:52:54 |
| Model 2 | 9.2 million | 7378 | 08:56:06 | 7370 | 01:51:08 |
The performance gains are minor for small models with less than 500,000 degrees of freedom or for large models with less than 2000 eigenmodes extracted.
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