Date: Thu, 02 May 1996 10:00:39 -0700 From: Wayne Scott <wscott@ichips.intel.com> To: asami@cs.berkeley.edu (Satoshi Asami) Cc: current@freebsd.org, nisha@cs.berkeley.edu Subject: Re: more on fast bcopy Message-ID: <199605021658.JAA19776@ichips.intel.com> In-Reply-To: Your message of "Thu, 02 May 1996 02:35:47 PDT." <199605020935.CAA06965@silvia.HIP.Berkeley.EDU>
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I think you might find these results interesting.
This is the script run on a P6 box.
Pentium Pro 200/256
128 Meg memory 2-way interleave
B-step Orion chipset
The interesting results is that 'libc' is MUCH faster than any
of the other results.
We implimented a fast string copy mode for 'rep movs' that kicks
in at about 128 elements.
Wayne Scott MD6 Architecture
wscott@ichips.intel.com Work #: (503) 264-4165
Disclaimer: All views expressed are my own opinions, and not necessarily
those of Intel Corporation.
# This is a shell archive. Save it in a file, remove anything before
# this line, and then unpack it by entering "sh file". Note, it may
# create directories; files and directories will be owned by you and
# have default permissions.
#
# This archive contains:
#
# pdxlx008/fpunrolled.out
# pdxlx008/libc.out
# pdxlx008/plot.gp
# pdxlx008/unrolled128.out
# pdxlx008/unrolled144.out
# pdxlx008/unrolled32.out
# pdxlx008/unrolled48.out
# pdxlx008/unrolled64.out
# pdxlx008/unrolled96.out
#
echo x - pdxlx008/fpunrolled.out
sed 's/^X//' >pdxlx008/fpunrolled.out << 'END-of-pdxlx008/fpunrolled.out'
X31.927970
X28.838598
X33.324169
X34.343018
X34.618547
X34.948538
X35.172875
X35.307306
X35.343182
END-of-pdxlx008/fpunrolled.out
echo x - pdxlx008/libc.out
sed 's/^X//' >pdxlx008/libc.out << 'END-of-pdxlx008/libc.out'
X32.017417
X32.604354
X33.238603
X39.687264
X43.481569
X45.450414
X46.639616
X47.106484
X47.434955
END-of-pdxlx008/libc.out
echo x - pdxlx008/plot.gp
sed 's/^X//' >pdxlx008/plot.gp << 'END-of-pdxlx008/plot.gp'
Xset xtics ("32" 0, "64" 1, "128" 2, "256" 3, "512" 4, "1024" 5, "2048" 6, "4096" 7, "8192" 8)
Xplot 'pdxlx008/fpunrolled.out' w linesp, 'pdxlx008/unrolled144.out' w linesp, 'pdxlx008/unrolled128.out' w linesp, 'pdxlx008/unrolled96.out' w linesp, 'pdxlx008/unrolled64.out' w linesp, 'pdxlx008/unrolled48.out' w linesp, 'pdxlx008/unrolled32.out' w linesp, 'pdxlx008/libc.out' w linesp
END-of-pdxlx008/plot.gp
echo x - pdxlx008/unrolled128.out
sed 's/^X//' >pdxlx008/unrolled128.out << 'END-of-pdxlx008/unrolled128.out'
X31.792206
X32.426736
X35.571681
X35.386643
X35.226152
X35.223980
X35.189893
X35.092952
X35.121300
END-of-pdxlx008/unrolled128.out
echo x - pdxlx008/unrolled144.out
sed 's/^X//' >pdxlx008/unrolled144.out << 'END-of-pdxlx008/unrolled144.out'
X31.879623
X32.474122
X33.214315
X28.795623
X35.488679
X35.381009
X35.256580
X35.281147
X35.299828
END-of-pdxlx008/unrolled144.out
echo x - pdxlx008/unrolled32.out
sed 's/^X//' >pdxlx008/unrolled32.out << 'END-of-pdxlx008/unrolled32.out'
X30.772308
X35.372562
X35.711097
X34.900055
X34.853832
X34.834406
X34.804399
X34.747559
X34.817426
END-of-pdxlx008/unrolled32.out
echo x - pdxlx008/unrolled48.out
sed 's/^X//' >pdxlx008/unrolled48.out << 'END-of-pdxlx008/unrolled48.out'
X31.844852
X35.743966
X35.232668
X35.396664
X35.211578
X35.172565
X35.219018
X35.085257
X35.271502
END-of-pdxlx008/unrolled48.out
echo x - pdxlx008/unrolled64.out
sed 's/^X//' >pdxlx008/unrolled64.out << 'END-of-pdxlx008/unrolled64.out'
X31.792964
X35.621098
X35.714605
X35.439315
X35.407317
X35.515463
X35.568518
X35.576427
X35.632522
END-of-pdxlx008/unrolled64.out
echo x - pdxlx008/unrolled96.out
sed 's/^X//' >pdxlx008/unrolled96.out << 'END-of-pdxlx008/unrolled96.out'
X31.846373
X32.406507
X35.524294
X36.170290
X36.104342
X36.246987
X36.461419
X36.407657
X36.381827
END-of-pdxlx008/unrolled96.out
exit
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