mirror of https://github.com/BOINC/boinc.git
110 lines
2.5 KiB
PHP
110 lines
2.5 KiB
PHP
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<?php
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// Use this script to find an optimal value for fp_benchmark_weight.
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// This evaluates the variation for weights 0, .1, ... 1.
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require_once("../inc/db.inc");
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db_init();
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function mean($x) {
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$sum = 0;
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$n = count($x);
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for ($i=0; $i<$n; $i++) {
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$sum += $x[$i];
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}
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return $sum/$n;
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}
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function spread($x) {
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$sum = 0;
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$n = count($x);
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$m = mean($x);
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for ($i=0; $i<$n; $i++) {
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$d = $x[$i] - $m;
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$sum += $d*$d;
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}
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return sqrt($sum)/$n;
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}
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function cc($x, $fpw) {
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$cps = $x->p_fpops*$fpw + $x->p_iops*(1-$fpw);
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$cps /= 1e9;
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$cps /= 864;
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$cc = $x->cpu_time * $cps;
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//if ($x->duration_correction_factor) {
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// $cc /= $x->duration_correction_factor;
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//}
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return $cc;
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}
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// $x is a vector of objects
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//
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function handle_wu($x) {
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$cc = array();
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for ($i=0; $i<=12; $i++) {
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array_push($cc, array());
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}
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for ($j=0; $j<count($x); $j++) {
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$y = $x[$j];
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for ($i=0; $i<=12; $i++) {
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$r = $i/10.;
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array_push($cc[$i], cc($y, $r));
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}
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}
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$res = array();
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for ($i=0; $i<=12; $i++) {
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$c = $cc[$i];
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$m = mean($c);
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$s = spread($c);
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$rs = $s/$m;
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array_push($res, $rs);
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}
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return $res;
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}
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function get_data() {
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$sum = array();
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for ($i=0; $i<=12; $i++) {
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array_push($sum, 0);
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}
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$r1 = mysql_query(
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"select id from workunit where canonical_resultid>0 limit 10000"
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);
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$n = 0;
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while ($wu = mysql_fetch_object($r1)) {
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$x = array();
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$r2 = mysql_query("select * from result where workunitid=$wu->id");
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$found_zero = false;
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while ($result = mysql_fetch_object($r2)) {
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if ($result->granted_credit==0) continue;
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if ($result->claimed_credit==0) $found_zero = true;
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$host = lookup_host($result->hostid);
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$y->claimed_credit = $result->claimed_credit;
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$y->granted_credit = $result->granted_credit;
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$y->cpu_time = $result->cpu_time;
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$y->p_fpops = $host->p_fpops;
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$y->p_iops = $host->p_iops;
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$y->duration_correction_factor = $host->duration_correction_factor;
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$y->id = $result->id;
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array_push($x, $y);
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}
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if (count($x)==0) continue;
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if ($found_zero) continue;
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$res = handle_wu($x);
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for ($i=0; $i<=12; $i++) {
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$sum[$i] += $res[$i];
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}
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$n++;
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}
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for ($i=0; $i<=12; $i++) {
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$r = $sum[$i]/$n;
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echo "$i $r\n";
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}
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}
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get_data();
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?>
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