[vtk-developers] FYI --- Re: RE: [Cmake] Win32 "Blended" processor vs Pentium
anast.jm at pg.com
anast.jm at pg.com
Tue Nov 6 09:58:52 EST 2001
Jim, I tried compiling with processor optimization under MSVC6 on a dual P$ NT
box with a very recent CVS nightly for VTK and did not find any speed up when
building the debug or release versions. I also tried optimizing for both the
Pentium setting and Pentium Pro setting but neither seemed to make any
difference with the Simple Sphere Benchmark. Perhaps this bench is not sensitive
to these optimizations??
regards, john
<<snip snip>>
From: "Miller, James V (CRD)" <millerjv at crd.ge.com>@public.kitware.com on
11/05/2001 08:54 AM
Subject: [Cmake] Win32 "Blended" processor vs
Sent by: cmake-admin at public.kitware.com 11/05/2001 08:54 AM
Stephen Alyward mentioned the other day that he has seen as much as a 2X
performance improvement if VC++ is set to create instructions for the Pentium
processor as opposed to the "Blended" mode which is the current default.
Has anyone else seen such performance increases switching from "blended" to
"pentium"?
Should CMake support changing this setting? Or perhaps should we just the
default to be compile for Pentium? Are we worried about building applications
for people with 486's? (I am currently getting pressure to pull machines with
less than a Pentium II off our network :)
Jim Miller
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Visualization & Computer Vision
GE Corporate Research & Development
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