text: /* matmult.c 
   *    Test program to do matrix multiplication on large arrays.
   *
   *    Intended to stress virtual memory system.
   *
   *    Ideally, we could read the matrices off of the file system,
   *	and store the result back to the file system!
   */
  
  #include "syscall.h"
  
  #define Dim 	20	/* sum total of the arrays doesn't fit in 
  			 * physical memory 
  			 */
  
  int A[Dim][Dim];
  int B[Dim][Dim];
  int C[Dim][Dim];
  
  int
  main()
  {
      int i, j, k;
  
      for (i = 0; i < Dim; i++)		/* first initialize the matrices */
  	for (j = 0; j < Dim; j++) {
  	     A[i][j] = i;
  	     B[i][j] = j;
  	     C[i][j] = 0;
  	}
  
      for (i = 0; i < Dim; i++)		/* then multiply them together */
  	for (j = 0; j < Dim; j++)
              for (k = 0; k < Dim; k++)
  		 C[i][j] += A[i][k] * B[k][j];
  
      Exit(C[Dim-1][Dim-1]);		/* and then we're done */
  }
  