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Model Number | COMPAQ AlphaServers GS160 | |

Number of Processors | 16 | |

Processor Type | Alpha EV67 at 731 MHz | |

Operating System | Compaq Tru64 UNIX Version X5.1-BL9 |

Memory Installed (Gbytes) | 64 | 64 | 64 | 64 |

Memory for FMS (Gbytes) | 16 | 48 | 16 | 16 |

Code Used | Example 11 | Example 11 | Example 11 | Example 11 |

Date Started | 08/09/2000 | 04/22/2000 | 08/10/2000 | 08/10/2000 |

Number of Equations | 15,000 | 50,000 | 50,000 | 100,000 |

Number of Vectors | 1 | 1 | 1 | 1 |

Matrix Sparsity | Full | Full | Full | Full |

Matrix Symmetry | Nonsymmetric With Pivoting |
Symmetric | Nonsymmetric With Pivoting |
Nonsymmetric With Pivoting |

Data Type | 16-byte Complex | 16-byte Complex | 16-byte Complex | 16-byte Complex |

CPU Time (Days::Hr:Min:Sec) | 2:18:34 | 1::21:10:32 | 3::11:49:36 | 26::08:40:40 |

Wall Time (Hr:Min:Sec) | 10:07 | 3:12:07 | 5:49:41 | 1::18:31:35 |

I/O Wait Time (Hr:Min:Sec) | Incore | 2:37 | 8:23 | 37:37 |

Megaflops per Processor | 1,082 | 1,024 | 1,104 | 1,170 |

Overall Megaflops | 14,823 | 14,459 | 15,887 | 17,418 |

Parellel Speedup | 13.7 out of 16 | 13.7 out of 16 | 14.3 out of 16 | 14.8 out of 16 |

**CPU Time**is the total amount of User and System time used by all processors.**Wall Time**is the elapsed time measured on a dedicated machine. This includes the time spent processing and any time spent waiting for I/O to complete.**I/O Wait Time**is the total time spent waiting for I/O to complete that is not overlapped by asynchronous I/O.**Megaflops per Processor**is the theoretical number of floating point operations performed, divided by the CPU time. When reduced operation algorithms are used, this is based on the number of floating point operations that would have been performed by the traditional algorithm.**Overall Megaflops**is the total number of floating point operations performed, divided by the Wall Time.**Parallel Speedup**is overall increase in performance due to parallel processing.