approach | SP2 solution time (seconds) | Cray solution time (seconds) |
---|---|---|

function evaluation | 3240 | 520 |

One-sided differences (estimated) | 9720 | 1560 |

Two-sided differences (estimated) | 19440 | 3120 |

``Black box'' derivatives (includes 1 function evaluation) | 16420 | 5200 |

Incremental iterative method | 16060 | 4320 |

Incremental iterative method, with multiple right hand sides | 14000 | 3120 |

Incremental iterative method, multiple right hand sides, timescale multiplied by 4 | 3500 | 780 |