HomeGo Up

COMPAQ AND MULTIPATH CONFIDENTIAL

Compaq GS320 AlphaServer

Machine Description

Model Number

AlphaServer GS320

Number of Processors

32

Processor Type

Alpha EV68 at 1001 MHz

Memory Installed (Gbytes)

256

Memory used by FMS (Gbytes)

32

Operating System

Compaq Tru64 UNIX

Problem and Results

Code Used

Example 11

Matrix Sparsity

Full

Matrix Symmetry

Nonsymmetric with pivoting

Data Type

16-byte Complex

Results

Date Started

04/22/2001

04/22/2001

04/22/2001

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)

1:52:40

2::13:37:01

19::22:25:47

Factoring Wall Time (Hr:Min:Sec)

5:49

2:13:50

16:05:43

I/O Wait Time (Hr:Min:Sec)

0

1:43

6:45

Megaflops per Processor

1,331

1,502

1,548

Overall Megaflops

25,813

41,513

46,023

Parellel Speedup

19.3 out of 32

27.6 out of 32

29.7 out of 32

NOTES:

  1. CPU Time is the total amount of User and System time used by all processors.
  2. 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.
  3. I/O Wait Time is the total time spent waiting for I/O to complete that is not overlapped by asynchronous I/O.
  4. 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.
  5. Overall Megaflops is the total number of floating point operations performed, divided by the Wall Time.
  6. Parallel Speedup is overall increase in performance due to parallel processing.


HomeGo Up
Copyright © 2001 Multipath Corporation