qbit/go: The Go programming language - go

qbit/go

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The Go programming language

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Robert Griesemer 35422bc11f math/big: faster (add\|sub)V(V\|W) routines Benchmarks run on 3.06GHz Intel Core 2 Duo, 4GB 800MHz DDR2 SDRAM ("iMac"). benchmark old ns/op new ns/op delta BenchmarkAddVV_1 6 6 +2.75% BenchmarkAddVV_2 9 7 -19.71% BenchmarkAddVV_3 9 9 +2.25% BenchmarkAddVV_4 10 8 -20.46% BenchmarkAddVV_5 12 10 -19.53% BenchmarkAddVV_1e1 23 15 -32.48% BenchmarkAddVV_1e2 213 107 -49.77% BenchmarkAddVV_1e3 2088 993 -52.44% BenchmarkAddVV_1e4 20874 12027 -42.38% BenchmarkAddVV_1e5 209858 121480 -42.11% BenchmarkAddVW_1 5 5 +0.90% BenchmarkAddVW_2 11 11 -3.51% BenchmarkAddVW_3 7 7 -0.27% BenchmarkAddVW_4 8 7 -6.32% BenchmarkAddVW_5 9 8 -10.89% BenchmarkAddVW_1e1 17 12 -26.01% BenchmarkAddVW_1e2 155 89 -42.32% BenchmarkAddVW_1e3 1479 873 -40.97% BenchmarkAddVW_1e4 13838 8764 -36.67% BenchmarkAddVW_1e5 147353 89560 -39.22% benchmark old MB/s new MB/s speedup BenchmarkAddVV_1 9765.57 9508.55 0.97x BenchmarkAddVV_2 13077.63 16284.97 1.25x BenchmarkAddVV_3 20599.58 20156.67 0.98x BenchmarkAddVV_4 23591.58 29516.02 1.25x BenchmarkAddVV_5 24920.95 31194.10 1.25x BenchmarkAddVV_1e1 27393.76 40621.71 1.48x BenchmarkAddVV_1e2 29911.96 59592.99 1.99x BenchmarkAddVV_1e3 30650.73 64429.84 2.10x BenchmarkAddVV_1e4 30660.09 53213.08 1.74x BenchmarkAddVV_1e5 30496.74 52683.46 1.73x BenchmarkAddVW_1 11503.39 11405.98 0.99x BenchmarkAddVW_2 11203.56 11586.92 1.03x BenchmarkAddVW_3 26173.45 26224.75 1.00x BenchmarkAddVW_4 30560.30 32621.94 1.07x BenchmarkAddVW_5 33183.81 37269.94 1.12x BenchmarkAddVW_1e1 36991.75 50098.53 1.35x BenchmarkAddVW_1e2 41087.14 71549.93 1.74x BenchmarkAddVW_1e3 43266.42 73279.83 1.69x BenchmarkAddVW_1e4 46246.74 73021.97 1.58x BenchmarkAddVW_1e5 43433.00 71459.96 1.65x Benchmarks run on 2.8GHz Quad-Code Intel Xeon, 4GB 800MHz DDR2 FB-DIMM ("PowerMac"). benchmark old ns/op new ns/op delta BenchmarkAddVV_1 7 7 +2.51% BenchmarkAddVV_2 8 8 +3.70% BenchmarkAddVV_3 10 10 +4.00% BenchmarkAddVV_4 11 9 -19.49% BenchmarkAddVV_5 14 11 -18.44% BenchmarkAddVV_1e1 23 17 -27.00% BenchmarkAddVV_1e2 234 117 -50.00% BenchmarkAddVV_1e3 2284 1095 -52.06% BenchmarkAddVV_1e4 22906 13149 -42.60% BenchmarkAddVV_1e5 229860 135133 -41.21% BenchmarkAddVW_1 6 6 +1.15% BenchmarkAddVW_2 7 7 +1.37% BenchmarkAddVW_3 7 8 +1.00% BenchmarkAddVW_4 9 8 -6.93% BenchmarkAddVW_5 10 9 -13.21% BenchmarkAddVW_1e1 18 14 -24.32% BenchmarkAddVW_1e2 170 97 -42.41% BenchmarkAddVW_1e3 1619 953 -41.14% BenchmarkAddVW_1e4 15142 9776 -35.44% BenchmarkAddVW_1e5 160835 102396 -36.33% benchmark old MB/s new MB/s speedup BenchmarkAddVV_1 8928.95 8702.84 0.97x BenchmarkAddVV_2 15298.84 14739.60 0.96x BenchmarkAddVV_3 19116.52 18375.37 0.96x BenchmarkAddVV_4 21644.30 26935.44 1.24x BenchmarkAddVV_5 22771.64 27754.04 1.22x BenchmarkAddVV_1e1 27017.62 37050.89 1.37x BenchmarkAddVV_1e2 27326.09 54289.15 1.99x BenchmarkAddVV_1e3 28016.84 58428.83 2.09x BenchmarkAddVV_1e4 27939.38 48670.55 1.74x BenchmarkAddVV_1e5 27843.00 47360.54 1.70x BenchmarkAddVW_1 10510.97 10397.27 0.99x BenchmarkAddVW_2 17499.71 17279.03 0.99x BenchmarkAddVW_3 24093.93 23858.39 0.99x BenchmarkAddVW_4 27733.08 29799.42 1.07x BenchmarkAddVW_5 30267.17 34781.83 1.15x BenchmarkAddVW_1e1 34566.78 45629.88 1.32x BenchmarkAddVW_1e2 37521.89 65341.93 1.74x BenchmarkAddVW_1e3 39513.18 67153.67 1.70x BenchmarkAddVW_1e4 42263.80 65464.60 1.55x BenchmarkAddVW_1e5 39792.21 62501.88 1.57x R=iant, remyoudompheng, nightlyone, minux.ma CC=golang-dev https://golang.org/cl/6482062		2012-08-24 09:20:44 -07:00
api	api: add recent API additions to next.txt	2012-08-15 10:30:20 +10:00
doc	doc/install: we only need command line tools for Xcode on OS X	2012-08-20 21:21:09 +08:00
include	build: remove unnecessary pragmas	2012-02-06 12:45:23 -05:00
lib	godoc: report error for directories with multiple packages	2012-08-09 16:10:46 -07:00
misc	pprof: make it work on windows again	2012-08-18 17:03:32 +10:00
src	math/big: faster (add\|sub)V(V\|W) routines	2012-08-24 09:20:44 -07:00
test	cmd/6g: fix float32/64->uint64 conversion	2012-08-23 14:35:26 +08:00
.hgignore	build: update Makefile to track source code dependencies better	2012-03-13 03:31:11 +08:00
.hgtags	tag go1.0.2	2012-06-14 13:18:10 +10:00
AUTHORS	A+C: Add Julien Schmidt (Individual CLA)	2012-08-23 19:29:15 -07:00
CONTRIBUTORS	A+C: Add Julien Schmidt (Individual CLA)	2012-08-23 19:29:15 -07:00
favicon.ico	add a favicon plus a couple of hi-res versions of gordon	2009-10-26 10:13:07 -07:00
LICENSE	doc: update licensing text one more time	2012-03-27 15:09:13 +11:00
PATENTS	LICENSE: separate, change PATENTS text	2010-12-06 16:31:59 -05:00
README	build: update, streamline documentation for new $GOBIN	2010-08-24 20:00:50 -04:00
robots.txt	godoc: serve robots.txt raw	2011-02-19 05:46:20 +11:00

README

This is the source code repository for the Go programming language.  

For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install.html in your web browser.

After installing Go, you can view a nicely formatted
doc/install.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install.html.

Unless otherwise noted, the Go source files are distributed
under the BSD-style license found in the LICENSE file.

--

Binary Distribution Notes

If you have just untarred a binary Go distribution, you need to set
the environment variable $GOROOT to the full path of the go
directory (the one containing this README).  You can omit the
variable if you unpack it into /usr/local/go, or if you rebuild
from sources by running all.bash (see doc/install.html).
You should also add the Go binary directory $GOROOT/bin
to your shell's path.

For example, if you extracted the tar file into $HOME/go, you might
put the following in your .profile:

    export GOROOT=$HOME/go
    export PATH=$PATH:$GOROOT/bin

See doc/install.html for more details.