JAMA

# Source for file benchmark.php Documentation is available at benchmark.php <?php error_reporting(E_ALL); /** * @package JAMA */ require_once '../Matrix.php'; require_once 'Stats.php'; /** * Example of use of Matrix Class, featuring magic squares. */ class Benchmark { public $stat; /** * Simple function to replicate PHP 5 behaviour */ function microtime_float() { list($usec, $sec) = explode(" ", microtime()); return ((float)$usec + (float)$sec); } // function microtime_float() function displayStats($times = null) { $this->stat->setData($times); $stats = $this->stat->calcFull(); echo '<table style="margin-left:32px;">'; echo '<tr><td style="text-align:right;"><b>n:</b><td style="text-align:right;">' . $stats['count'] . ' </td></tr>'; echo '<tr><td style="text-align:right;"><b>Mean:</b><td style="text-align:right;">' . $stats['mean'] . ' </td></tr>'; echo '<tr><td style="text-align:right;"><b>Min.:</b><td style="text-align:right;">' . $stats['min'] . ' </td></tr>'; echo '<tr><td style="text-align:right;"><b>Max.:</b><td style="text-align:right;">' . $stats['max'] . ' </td></tr>'; echo '<tr><td style="text-align:right;"><b>&sigma;:</b><td style="text-align:right;">' . $stats['stdev'] . ' </td></tr>'; echo '<tr><td style="text-align:right;"><b>Variance:</b><td style="text-align:right;">' . $stats['variance'] . ' </td></tr>'; echo '<tr><td style="text-align:right;"><b>Range:</b><td style="text-align:right;">' . $stats['range'] . ' </td></tr>'; echo '</table>'; return $stats; } // function displayStats() function runEig($n = 4, $t = 100) { $times = array(); for ($i = 0; $i < $t; ++$i) { $M = Matrix::random($n, $n); $start_time = $this->microtime_float(); $E = new EigenvalueDecomposition($M); $stop_time = $this->microtime_float(); $times[] = $stop_time - $start_time; } return $times; } // function runEig() function runLU($n = 4, $t = 100) { $times = array(); for ($i = 0; $i < $t; ++$i) { $M = Matrix::random($n, $n); $start_time = $this->microtime_float(); $E = new LUDecomposition($M); $stop_time = $this->microtime_float(); $times[] = $stop_time - $start_time; } return $times; } // function runLU() function runQR($n = 4, $t = 100) { $times = array(); for ($i = 0; $i < $t; ++$i) { $M = Matrix::random($n, $n); $start_time = $this->microtime_float(); $E = new QRDecomposition($M); $stop_time = $this->microtime_float(); $times[] = $stop_time - $start_time; } return $times; } // function runQR() function runCholesky($n = 4, $t = 100) { $times = array(); for ($i = 0; $i < $t; ++$i) { $M = Matrix::random($n, $n); $start_time = $this->microtime_float(); $E = new CholeskyDecomposition($M); $stop_time = $this->microtime_float(); $times[] = $stop_time - $start_time; } return $times; } // function runCholesky() function runSVD($n = 4, $t = 100) { $times = array(); for ($i = 0; $i < $t; ++$i) { $M = Matrix::random($n, $n); $start_time = $this->microtime_float(); $E = new SingularValueDecomposition($M); $stop_time = $this->microtime_float(); $times[] = $stop_time - $start_time; } return $times; } // function runSVD() function run() { $n = 8; $t = 16; $sum = 0; echo "<b>Cholesky decomposition: $t random {$n}x{$n} matrices</b><br />"; $r = $this->displayStats($this->runCholesky($n, $t)); $sum += $r['mean'] * $n; echo '<hr />'; echo "<b>Eigenvalue decomposition: $t random {$n}x{$n} matrices</b><br />"; $r = $this->displayStats($this->runEig($n, $t)); $sum += $r['mean'] * $n; echo '<hr />'; echo "<b>LU decomposition: $t random {$n}x{$n} matrices</b><br />"; $r = $this->displayStats($this->runLU($n, $t)); $sum += $r['mean'] * $n; echo '<hr />'; echo "<b>QR decomposition: $t random {$n}x{$n} matrices</b><br />"; $r = $this->displayStats($this->runQR($n, $t)); $sum += $r['mean'] * $n; echo '<hr />'; echo "<b>Singular Value decomposition: $t random {$n}x{$n} matrices</b><br />"; $r = $this->displayStats($this->runSVD($n, $t)); $sum += $r['mean'] * $n; return $sum; } // function run() public function __construct() { $this->stat = new Base(); } // function Benchmark() } // class Benchmark (end MagicSquareExample) $benchmark = new Benchmark(); switch($_REQUEST['decomposition']) { case 'cholesky': $m = array(); for ($i = 2; $i <= 8; $i *= 2) { $t = 32 / $i; echo "<b>Cholesky decomposition: $t random {$i}x{$i} matrices</b><br />"; $s = $benchmark->displayStats($benchmark->runCholesky($i, $t)); $m[$i] = $s['mean']; echo "<br />"; } echo '<pre>'; foreach($m as $x => $y) { echo "$x\t" . 1000*$y . "\n"; } echo '</pre>'; break; case 'eigenvalue': $m = array(); for ($i = 2; $i <= 8; $i *= 2) { $t = 32 / $i; echo "<b>Eigenvalue decomposition: $t random {$i}x{$i} matrices</b><br />"; $s = $benchmark->displayStats($benchmark->runEig($i, $t)); $m[$i] = $s['mean']; echo "<br />"; } echo '<pre>'; foreach($m as $x => $y) { echo "$x\t" . 1000*$y . "\n"; } echo '</pre>'; break; case 'lu': $m = array(); for ($i = 2; $i <= 8; $i *= 2) { $t = 32 / $i; echo "<b>LU decomposition: $t random {$i}x{$i} matrices</b><br />"; $s = $benchmark->displayStats($benchmark->runLU($i, $t)); $m[$i] = $s['mean']; echo "<br />"; } echo '<pre>'; foreach($m as $x => $y) { echo "$x\t" . 1000*$y . "\n"; } echo '</pre>'; break; case 'qr': $m = array(); for ($i = 2; $i <= 8; $i *= 2) { $t = 32 / $i; echo "<b>QR decomposition: $t random {$i}x{$i} matrices</b><br />"; $s = $benchmark->displayStats($benchmark->runQR($i, $t)); $m[$i] = $s['mean']; echo "<br />"; } echo '<pre>'; foreach($m as $x => $y) { echo "$x\t" . 1000*$y . "\n"; } echo '</pre>'; break; case 'svd': $m = array(); for($i = 2; $i <= 8; $i *= 2) { $t = 32 / $i; echo "<b>Singular value decomposition: $t random {$i}x{$i} matrices</b><br />"; $s = $benchmark->displayStats($benchmark->runSVD($i, $t)); $m[$i] = $s['mean']; echo "<br />"; } echo '<pre>'; foreach($m as $x => $y) { echo "$x\t" . 1000*$y . "\n"; } echo '</pre>'; break; case 'all': $s = $benchmark->run(); print("<br /><b>Total<b>: {$s}s<br />"); break; default: ?> <ul> <li><a href="benchmark.php?decomposition=all">Complete Benchmark</a> <ul> <li><a href="benchmark.php?decomposition=cholesky">Cholesky</a></li> <li><a href="benchmark.php?decomposition=eigenvalue">Eigenvalue</a></li> <li><a href="benchmark.php?decomposition=lu">LU</a></li> <li><a href="benchmark.php?decomposition=qr">QR</a></li> <li><a href="benchmark.php?decomposition=svd">Singular Value</a></li> </ul> </li> </ul> <?php break; } Documentation generated on Sun, 27 Feb 2011 16:28:28 -0800 by phpDocumentor 1.4.3