Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!rutgers!gatech!burdell!juan
From: juan@burdell.gatech.edu (Juan Orlandini)
Newsgroups: comp.benchmarks
Subject: Sun weirdness.
Message-ID: <605@mephisto.edu>
Date: 17 Dec 90 17:19:00 GMT
Sender: news@gatech.edu
Distribution: usa
Organization: ICS Lab
Lines: 49


Can anyone tell me why the following program takes only .9 user seconds
an .1 sys seconds on a sun 4/370 and 5.0 user seconds and 39.0 sys seconds
on sparc 1's (1, 1+, IPC)?

---------------------------- cut here -----------------------------
#include <stdio.h>

main()
{
    int    num_times,row1,col2,col1,num_cols1,num_cols2,num_rows;
    float  mat1[4][4],mat2[4][4],res[4][4];
    float  temp;
    
    num_rows = 4;
    num_cols1 = 4;
    num_cols2 = 4;
    for(num_times=0;num_times<10000;num_times++)
    {
      for(row1=0;row1<num_rows;row1++)
      {
        for(col2=0;col2<num_cols2;col2++)
        {
            temp = 0;
            for(col1=0;col1<num_cols1;col1++)
            {
              temp = temp + mat1[row1][col1]*mat2[col1][col2];
            }
            res[row1][col2] = temp;
        }
    }
      }
}
            

------------------------ cut here too ------------------------------


Thanks,

Juan


=======================================================================
Juan Orlandini                /// "Whe have not inherited this      ///
Super User At Large          ///  earth from our parents, but      ///
College of Computing     \\\///   rather borrowed it from our  \\\///
juan@cc.gatech.edu        \XX/    children." -- Unknown         \XX/
=======================================================================