Measuring CPU Performance in the New Millennium by John Henning. Only the ten Fortran tests of SPECfp2000 were run for the purpose of this comparison. The SPEC test driver built the applications, ran the tests in a consistent manner, and then validated the output. It then computed a performance ratio of a reference time divided by the actual time, multiplied by 100. For example, if a test ran twice as fast as the reference time, the ratio would be 200.
Higher ratios indicate higher performance.
The geometric mean of the ratios was then computed to determine the resulting score. Test fma3d, as compiled by Lahey LF95, failed to run correctly. The remaining nine results were used to compute the geometric mean. Tests wupwise, galgel, sixtrack and apsi, as compiled by Absoft Pro Fortran, failed to run correctly. The remaining six results were used to compute the geometric mean.