Asus A7M266 motherboard (AMD760 chipset), 1.2 GHz AMD Athlon (FSB266), 512 MB DDR SDRAM (2-2-2), Windows NT4/SP6, Watcom Fortran 11b, wfl386 -Ox -6 -FP6 ---------------------------------------------- Double precision appears to have 16 digits of accuracy Assuming 8 bytes per DOUBLE PRECISION word ---------------------------------------------- Array size = 18901234 Offset = 0 The total memory requirement is 432 MB You are running each test 10 times The *best* time for each test is used ---------------------------------------------------- Your clock granularity/precision appears to be 10000 microseconds The tests below will each take a time on the order of 490000 microseconds (= 49 clock ticks) Increase the size of the arrays if this shows that you are not getting at least 20 clock ticks per test. ---------------------------------------------------- WARNING -- The above is only a rough guideline. For best results, please be sure you know the precision of your system timer. ---------------------------------------------------- Function Rate (MB/s) RMS time Min time Max time Copy: 643.4463 0.4770 0.4700 0.4900 Scale: 916.4235 0.3371 0.3300 0.3500 Add: 810.0529 0.5660 0.5600 0.5700 Triad: 872.3646 0.5290 0.5200 0.5300 Sum of a is = 2.1798807941554600D+019 Sum of b is = 4.3597615888537450D+018 Sum of c is = 5.8130154485535700D+018