abe@mace.cc.purdue.edu (Vic Abell) (06/26/91)
I would be interested to hear others' experience with the Fortran preprocessor in xlf 2.1. My experience so far has been that two local codes each got about a 10% speed improvement, while two benchmarks (Linpack and Whetstones) each got a much higher boost. xlf 1.1 xlf 2.1 + preprocessor Local code 1 43 CPU sec. 39 CPU sec. Local code 2 1001 CPU sec. 910 CPU sec. Linpack 13 MFLOPS 18 MFLOPS Whetstones 33,000 Whetstones/sec. 49,000 Whetstones/sec. (I used the "-P -Wp,-ew" options to xlf.) Vic Abell <abe@mace.cc.purdue.edu>