xlf 2.1 pre-processor experience?
Vic Abell
abe at mace.cc.purdue.edu
Wed Jun 26 23:43:45 AEST 1991
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 at mace.cc.purdue.edu>
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