| |

Model Number | AlphaServer GS320 |

Number of Processors | 32 |

Processor Type | Alpha EV67 at 731 MHz |

Memory Installed (Gbytes) | 192 |

Memory used by FMS (Gbytes) | 32 |

Operating System | Compaq Tru64 UNIX |

Code Used | Example 11 |

Matrix Sparsity | Full |

Matrix Symmetry | Nonsymmetric with pivoting |

Data Type | 16-byte Complex |

Date Started | 04/18/2001 | 04/18/2001 | 04/19/2001 |

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

Matrix Storage Size (Gbytes) | 7 | 55 | 183 |

File Location | Memory | Disk | Disk |

Factoring CPU Time (Days::Hr:Min:Sec) | 2:31:21 | 3::11:08:28 | 27::20:54:58 |

Factoring Wall Time (Hr:Min:Sec) | 7:21 | 2:56:35 | 23:19:15 |

I/O Wait Time (Hr:Min:Sec) | 0 | 8:10 | 28:34 |

Megaflops per Processor | 991 | 1,113 | 1,107 |

Overall Megaflops | 20,421 | 31,463 | 31,763 |

Parellel Speedup | 20.6 out of 32 | 28.2 out of 32 | 28.6 out of 32 |

**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.