Research Article
Parallel RFSAI-BFGS Preconditioners for Large Symmetric Eigenproblems
Table 8
Iterations, timings, and pseudo efficiencies for problem LONG-1103.
| | precond | DACG | Newton | Total | | CPU | CPU | MVP | CPU | MVP | CPU | MVP |
| 32 | 24.87 | 127.47 | 2734 | 346.87 | 5972 | 499.20 | 8706 | ā | 64 | 15.16 | 68.12 | 2734 | 172.24 | 5823 | 255.52 | 8557 | 0.97 | 128 | 8.57 | 42.90 | 2734 | 109.31 | 5928 | 160.78 | 8662 | 0.78 | 256 | 5.12 | 31.10 | 2734 | 77.41 | 5806 | 113.63 | 8540 | 0.55 |
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