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From: abe@mace.cc.purdue.edu (Vic Abell)
Newsgroups: comp.unix.aix
Subject: xlf 2.1 pre-processor experience?
Message-ID: <7857@mace.cc.purdue.edu>
Date: 26 Jun 91 13:43:45 GMT
Organization: Purdue University
Lines: 17

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>