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| 1 <!DOCTYPE html> |
| 2 <head> |
| 3 <!-- |
| 4 Copyright (C) 2007 Apple Inc. All rights reserved. |
| 5 |
| 6 Redistribution and use in source and binary forms, with or without |
| 7 modification, are permitted provided that the following conditions |
| 8 are met: |
| 9 1. Redistributions of source code must retain the above copyright |
| 10 notice, this list of conditions and the following disclaimer. |
| 11 2. Redistributions in binary form must reproduce the above copyright |
| 12 notice, this list of conditions and the following disclaimer in the |
| 13 documentation and/or other materials provided with the distribution. |
| 14 |
| 15 THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| 16 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 18 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| 19 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 20 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 22 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 23 OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 25 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 --> |
| 27 |
| 28 <title>SunSpider access-nbody</title> |
| 29 <link rel="stylesheet" href="sunspider.css"> |
| 30 </head> |
| 31 |
| 32 <body> |
| 33 <h3>access-nbody</h3> |
| 34 <div id="console"> |
| 35 </div> |
| 36 <script src="sunspider-record-result.js"></script> |
| 37 <script> |
| 38 |
| 39 var _sunSpiderStartDate = new Date(); |
| 40 |
| 41 /* The Great Computer Language Shootout |
| 42 http://shootout.alioth.debian.org/ |
| 43 contributed by Isaac Gouy */ |
| 44 |
| 45 var PI = 3.141592653589793; |
| 46 var SOLAR_MASS = 4 * PI * PI; |
| 47 var DAYS_PER_YEAR = 365.24; |
| 48 |
| 49 function Body(x,y,z,vx,vy,vz,mass){ |
| 50 this.x = x; |
| 51 this.y = y; |
| 52 this.z = z; |
| 53 this.vx = vx; |
| 54 this.vy = vy; |
| 55 this.vz = vz; |
| 56 this.mass = mass; |
| 57 } |
| 58 |
| 59 Body.prototype.offsetMomentum = function(px,py,pz) { |
| 60 this.vx = -px / SOLAR_MASS; |
| 61 this.vy = -py / SOLAR_MASS; |
| 62 this.vz = -pz / SOLAR_MASS; |
| 63 return this; |
| 64 } |
| 65 |
| 66 function Jupiter(){ |
| 67 return new Body( |
| 68 4.84143144246472090e+00, |
| 69 -1.16032004402742839e+00, |
| 70 -1.03622044471123109e-01, |
| 71 1.66007664274403694e-03 * DAYS_PER_YEAR, |
| 72 7.69901118419740425e-03 * DAYS_PER_YEAR, |
| 73 -6.90460016972063023e-05 * DAYS_PER_YEAR, |
| 74 9.54791938424326609e-04 * SOLAR_MASS |
| 75 ); |
| 76 } |
| 77 |
| 78 function Saturn(){ |
| 79 return new Body( |
| 80 8.34336671824457987e+00, |
| 81 4.12479856412430479e+00, |
| 82 -4.03523417114321381e-01, |
| 83 -2.76742510726862411e-03 * DAYS_PER_YEAR, |
| 84 4.99852801234917238e-03 * DAYS_PER_YEAR, |
| 85 2.30417297573763929e-05 * DAYS_PER_YEAR, |
| 86 2.85885980666130812e-04 * SOLAR_MASS |
| 87 ); |
| 88 } |
| 89 |
| 90 function Uranus(){ |
| 91 return new Body( |
| 92 1.28943695621391310e+01, |
| 93 -1.51111514016986312e+01, |
| 94 -2.23307578892655734e-01, |
| 95 2.96460137564761618e-03 * DAYS_PER_YEAR, |
| 96 2.37847173959480950e-03 * DAYS_PER_YEAR, |
| 97 -2.96589568540237556e-05 * DAYS_PER_YEAR, |
| 98 4.36624404335156298e-05 * SOLAR_MASS |
| 99 ); |
| 100 } |
| 101 |
| 102 function Neptune(){ |
| 103 return new Body( |
| 104 1.53796971148509165e+01, |
| 105 -2.59193146099879641e+01, |
| 106 1.79258772950371181e-01, |
| 107 2.68067772490389322e-03 * DAYS_PER_YEAR, |
| 108 1.62824170038242295e-03 * DAYS_PER_YEAR, |
| 109 -9.51592254519715870e-05 * DAYS_PER_YEAR, |
| 110 5.15138902046611451e-05 * SOLAR_MASS |
| 111 ); |
| 112 } |
| 113 |
| 114 function Sun(){ |
| 115 return new Body(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, SOLAR_MASS); |
| 116 } |
| 117 |
| 118 |
| 119 function NBodySystem(bodies){ |
| 120 this.bodies = bodies; |
| 121 var px = 0.0; |
| 122 var py = 0.0; |
| 123 var pz = 0.0; |
| 124 var size = this.bodies.length; |
| 125 for (var i=0; i<size; i++){ |
| 126 var b = this.bodies[i]; |
| 127 var m = b.mass; |
| 128 px += b.vx * m; |
| 129 py += b.vy * m; |
| 130 pz += b.vz * m; |
| 131 } |
| 132 this.bodies[0].offsetMomentum(px,py,pz); |
| 133 } |
| 134 |
| 135 NBodySystem.prototype.advance = function(dt){ |
| 136 var dx, dy, dz, distance, mag; |
| 137 var size = this.bodies.length; |
| 138 |
| 139 for (var i=0; i<size; i++) { |
| 140 var bodyi = this.bodies[i]; |
| 141 for (var j=i+1; j<size; j++) { |
| 142 var bodyj = this.bodies[j]; |
| 143 dx = bodyi.x - bodyj.x; |
| 144 dy = bodyi.y - bodyj.y; |
| 145 dz = bodyi.z - bodyj.z; |
| 146 |
| 147 distance = Math.sqrt(dx*dx + dy*dy + dz*dz); |
| 148 mag = dt / (distance * distance * distance); |
| 149 |
| 150 bodyi.vx -= dx * bodyj.mass * mag; |
| 151 bodyi.vy -= dy * bodyj.mass * mag; |
| 152 bodyi.vz -= dz * bodyj.mass * mag; |
| 153 |
| 154 bodyj.vx += dx * bodyi.mass * mag; |
| 155 bodyj.vy += dy * bodyi.mass * mag; |
| 156 bodyj.vz += dz * bodyi.mass * mag; |
| 157 } |
| 158 } |
| 159 |
| 160 for (var i=0; i<size; i++) { |
| 161 var body = this.bodies[i]; |
| 162 body.x += dt * body.vx; |
| 163 body.y += dt * body.vy; |
| 164 body.z += dt * body.vz; |
| 165 } |
| 166 } |
| 167 |
| 168 NBodySystem.prototype.energy = function(){ |
| 169 var dx, dy, dz, distance; |
| 170 var e = 0.0; |
| 171 var size = this.bodies.length; |
| 172 |
| 173 for (var i=0; i<size; i++) { |
| 174 var bodyi = this.bodies[i]; |
| 175 |
| 176 e += 0.5 * bodyi.mass * |
| 177 ( bodyi.vx * bodyi.vx |
| 178 + bodyi.vy * bodyi.vy |
| 179 + bodyi.vz * bodyi.vz ); |
| 180 |
| 181 for (var j=i+1; j<size; j++) { |
| 182 var bodyj = this.bodies[j]; |
| 183 dx = bodyi.x - bodyj.x; |
| 184 dy = bodyi.y - bodyj.y; |
| 185 dz = bodyi.z - bodyj.z; |
| 186 |
| 187 distance = Math.sqrt(dx*dx + dy*dy + dz*dz); |
| 188 e -= (bodyi.mass * bodyj.mass) / distance; |
| 189 } |
| 190 } |
| 191 return e; |
| 192 } |
| 193 |
| 194 var ret; |
| 195 |
| 196 for ( var n = 3; n <= 24; n *= 2 ) { |
| 197 (function(){ |
| 198 var bodies = new NBodySystem( Array( |
| 199 Sun(),Jupiter(),Saturn(),Uranus(),Neptune() |
| 200 )); |
| 201 var max = n * 100; |
| 202 |
| 203 ret = bodies.energy(); |
| 204 for (var i=0; i<max; i++){ |
| 205 bodies.advance(0.01); |
| 206 } |
| 207 ret = bodies.energy(); |
| 208 })(); |
| 209 } |
| 210 |
| 211 |
| 212 var _sunSpiderInterval = new Date() - _sunSpiderStartDate; |
| 213 |
| 214 record(_sunSpiderInterval); |
| 215 </script> |
| 216 |
| 217 |
| 218 </body> |
| 219 </html> |
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Chromium Code Reviews
Issue 42549:
Add a copy of SunSpider 0.9 for performance testing.... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/