------- Forwarded Message
Date: Thu, 14 Jun 2001 04:20:46 +0900 (JST)
Message-Id: <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: support Pentium3 SSE
From: [EMAIL PROTECTED] (NAKAMURA Kazushi)
Hello! Don't lose to Linux2.4.x!
I use FreeBSD as graphic workstation. I made a patch for support
Pentium3's SSE extension. The PR# is kern/28070 .
http://www.freebsd.org/cgi/query-pr.cgi?pr=28070
And there are WWW pages about SSE on FreeBSD environment.
#(poor) english
http://kobe1995.net/~kaz/FreeBSD/SSE.en.html
#(native) japanese
http://kobe1995.net/~kaz/FreeBSD/SSE.html
#test code
http://kobe1995.net/~kaz/FreeBSD/loop.C.gz
MMX instructions can be used without any difficult. But SSE
instructions are needs kernel support. I tested ONLY single
cuppermine celeron. Please test Pentium3/4 or SMP environment.
I afraid that it does NOT work in SMP environment, because the
access of (static) svxmm may conflicts. Allocate in stack,
insted static, is difficult to align 16 Byte boundary.
#Most SSE instructions are needs 16Byte alignment.
Any good idea?
SSE instructions are effective to audio or visual applications.
For example, MP3 encoding by celeron/667@750MHz:
###without SSE(may be using MMX)
% gogo -lang eng -nopsy -test -off sse
GOGO-no-coda ver. 2.39 (Jun 8 2001)
Copyright (C) 1999, 2000 PEN@MarineCat and shigeo
Special thanks to Keiichi SAKAI, URURI, Noisyu and Kei
test time 600sec
*** at bench in the early afternoon [benchmark mode] ***
MPEG 1, layer 3 j-stereo
inp sampling-freq=44.1kHz out sampling-freq=44.1kHz bitrate=128kbps
input file `stdin'
output file `default.mp3'
{ 22968/ 22968} 100.0% ( 16.93x) re:[00:00:00.00] to:[00:00:35.43]
End of encoding
time= 35.433sec ( 16.93x)
^^^^^^
###with SSE
% gogo -lang eng -nopsy -test
GOGO-no-coda ver. 2.39 (Jun 8 2001)
Copyright (C) 1999, 2000 PEN@MarineCat and shigeo
Special thanks to Keiichi SAKAI, URURI, Noisyu and Kei
test time 600sec
*** at bench in the early afternoon [benchmark mode] ***
MPEG 1, layer 3 j-stereo
inp sampling-freq=44.1kHz out sampling-freq=44.1kHz bitrate=128kbps
input file `stdin'
output file `default.mp3'
{ 22968/ 22968} 100.0% ( 35.58x) re:[00:00:00.00] to:[00:00:16.86]
End of encoding
time= 16.852sec ( 35.60x)
^^^^^^
Thank you!
------- End of Forwarded Message
--
<mailto:[EMAIL PROTECTED]> NAKAMURA Kazushi@KOBE
<http://kobe1995.net/~kaz/index-e.html>
To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-current" in the body of the message