Benchmark Class Reference

Example of use of Matrix Class, featuring magic squares. More...

Collaboration diagram for Benchmark:

Public Member Functions
	microtime_float ()
	Simple function to replicate PHP 5 behaviour.
	displayStats ($times=null)
	runEig ($n=4, $t=100)
	runLU ($n=4, $t=100)
	runQR ($n=4, $t=100)
	runCholesky ($n=4, $t=100)
	runSVD ($n=4, $t=100)
	run ()
	__construct ()

Data Fields
	$stat

Detailed Description

Example of use of Matrix Class, featuring magic squares.

Definition at line 16 of file benchmark.php.

Constructor & Destructor Documentation

Benchmark::__construct

(

)

Definition at line 159 of file benchmark.php.

                                      {
                $this->stat = new Base();
        }       //      function Benchmark()

Member Function Documentation

Benchmark::displayStats

(

$times = null

)

Definition at line 30 of file benchmark.php.

Referenced by run().

                                             {
                $this->stat->setData($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()

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Benchmark::microtime_float

(

)

Simple function to replicate PHP 5 behaviour.

Definition at line 23 of file benchmark.php.

Referenced by runCholesky(), runEig(), runLU(), runQR(), and runSVD().

                                   {
                list($usec, $sec) = explode(" ", microtime());

                return ((float)$usec + (float)$sec);
        }       //      function microtime_float()

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Benchmark::run

(

)

Definition at line 123 of file benchmark.php.

References $n, $t, displayStats(), runCholesky(), runEig(), runLU(), runQR(), and runSVD().

                       {
                $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()

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Benchmark::runCholesky	(		$n = 4,
			$t = 100
	)

Definition at line 93 of file benchmark.php.

References $n, $t, microtime_float(), and Matrix\random().

Referenced by run().

                                               {
                $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()

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Benchmark::runEig	(		$n = 4,
			$t = 100
	)

Definition at line 48 of file benchmark.php.

References $n, $t, microtime_float(), and Matrix\random().

Referenced by run().

                                          {
                $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()

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Benchmark::runLU	(		$n = 4,
			$t = 100
	)

Definition at line 63 of file benchmark.php.

References $n, $t, microtime_float(), and Matrix\random().

Referenced by run().

                                         {
                $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()

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Benchmark::runQR	(		$n = 4,
			$t = 100
	)

Definition at line 78 of file benchmark.php.

References $n, $t, microtime_float(), and Matrix\random().

Referenced by run().

                                         {
                $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()

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Benchmark::runSVD	(		$n = 4,
			$t = 100
	)

Definition at line 108 of file benchmark.php.

References $n, $t, microtime_float(), and Matrix\random().

Referenced by run().

                                          {
                $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()

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Field Documentation

Benchmark::$stat

Definition at line 17 of file benchmark.php.

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The documentation for this class was generated from the following file:

• Services/Excel/classes/PHPExcel/Shared/JAMA/examples/benchmark.php