#define NROWS    8192 // 2^13 rows
#define NCOLS    8192 // 2^13 cols
#define NTIMES    10   // Repeat 10 times

// Matrix size 2^26 = 64 MiBytes
char matrix[NROWS][NCOLS];

int main(void)
{
    int i, j, rep;

    // Repeat NTIMES to obtain e better execution time
    for (rep = 0; rep < NTIMES; rep++)
    {
        for (i = 0; i < NROWS; i++)
        {
            for(j = 0; j < NCOLS; j++)
            {
                matrix[i][j] = 'A';
            }
        }
    }
}