itgc nltest0 takes 

14.6 seconds on 1 processor on hecate (300 MHz Origin 2000)

15 seconds on 1 T3E processor (450 MHz Alpha)

23 seconds on saturn.pppl.gov (500 MHz Alpha)

(The T3E has bigger memory bandwidth, and so is about 1.5 times faster.)

13.4 seconds on thor.pppl.gov (AlphaPC 265DP 751 MHz from /proc/cpuinfo)