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Mail Archives: djgpp/2001/04/18/05:31:42

From: "Werner Stock" <west AT xpoint DOT at>
Newsgroups: comp.os.msdos.djgpp
Subject: AMD-K7 speed optimization
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Message-ID: <s_cD6.79$D3.4288@news.cwxpoint.at>
Date: Wed, 18 Apr 2001 11:14:44 +0200
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

For developing and training a neural network (lot of float math) in conjunction with a Monte Carlo simulation (lot of int math) I
used DJGPP version PGCC from the Pentium compiler group on my old Pentium-200MMX. I found best speed optimization by using the
compiler flags:
-O6
-mpentium
-fomit-frame-pointer
-fno-force-mem
-funroll-loops
-mpreferred-stack-boundary=2

Next week I'll get a new AMD-K7/1200 powered machine to run the major part (millions) of training cycles. Has anybody experience how
to optimize for speed using DJGPP on AMD's K7 cpu?

Thanks in advance for your tip!
-Werner

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