61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* matmult.c
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* Test program to do matrix multiplication on large arrays.
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*
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* Intended to stress virtual memory system.
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*
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* Ideally, we could read the matrices off of the file system,
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* and store the result back to the file system!
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*
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* -----------------------------------------------------
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* This file is part of the Nachos-RiscV distribution
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* Copyright (c) 2022 University of Rennes 1.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details
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* (see see <http://www.gnu.org/licenses/>).
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* -----------------------------------------------------
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*/
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#include "userlib/syscall.h"
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#define Dim 10 /* sum total of the arrays doesn't fit in
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* physical memory
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*/
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/* The matrices to be filled-in and multiplied */
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int A[Dim][Dim];
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int B[Dim][Dim];
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int C[Dim][Dim];
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int
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main()
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{
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int i, j, k;
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Write("Start matmult\n",14,CONSOLE_OUTPUT);
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for (i = 0; i < Dim; i++) /* first initialize the matrices */
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for (j = 0; j < Dim; j++) {
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A[i][j] = i;
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B[i][j] = j;
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C[i][j] = 0;
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}
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for (i = 0; i < Dim; i++) /* then multiply them together */
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for (j = 0; j < Dim; j++)
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for (k = 0; k < Dim; k++)
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C[i][j] += A[i][k] * B[k][j];
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Exit(C[Dim-1][Dim-1]); /* and then we're done */
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return 0;
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}
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