src/Tuner/comptuner.cc

   1 #include "comptuner.h"
   2 #include <float.h>
   3 #include <math.h>
   4 #include "searchtuner.h"
   5 #include <iostream>
   6 #include <fstream>
   7 #include "solver_interface.h"
   8
   9 CompTuner::CompTuner(uint _budget, uint _timeout) :
  10         BasicTuner(_budget, _timeout)
  11 {
  12 }
  13
  14 CompTuner::~CompTuner(){
  15
  16 }
  17
  18 void CompTuner::findBestThreeTuners() {
  19         if (allTuners.getSize() < 3) {
  20                 printData();
  21                 return;
  22         }
  23         TunerRecord *bestTuners[3];
  24         double score = DBL_MAX;
  25         for (uint i = 0; i < allTuners.getSize() - 2; i++) {
  26                 for (uint j = i + 1; j < allTuners.getSize() - 1; j++) {
  27                         for (uint k = j + 1; k < allTuners.getSize(); k++) {
  28                                 TunerRecord *tuner1 = allTuners.get(i);
  29                                 TunerRecord *tuner2 = allTuners.get(j);
  30                                 TunerRecord *tuner3 = allTuners.get(k);
  31                                 double mintimes[problems.getSize()];
  32                                 for (uint l = 0; l < problems.getSize(); l++) {
  33                                         Problem *problem = problems.get(l);
  34                                         mintimes[l] = pow(min(tuner1->getTime(problem), tuner2->getTime(problem), tuner3->getTime(problem)), (double)1 / problems.getSize());
  35                                 }
  36                                 double result = 1;
  37                                 for (uint l = 0; l < problems.getSize(); l++) {
  38                                         result *= mintimes[l];
  39                                 }
  40                                 if (result < score) {
  41                                         score = result;
  42                                         bestTuners[0] = tuner1;
  43                                         bestTuners[1] = tuner2;
  44                                         bestTuners[2] = tuner3;
  45                                 }
  46                         }
  47                 }
  48         }
  49         model_print("Best 3 tuners:\n");
  50         for (uint i = 0; i < 3; i++) {
  51                 TunerRecord *tuner = bestTuners[i];
  52                 SearchTuner *stun = tuner->getTuner();
  53                 char buffer[512];
  54                 snprintf(buffer, sizeof(buffer), "best%u.tuner", i);
  55                 stun->serialize(buffer);
  56                 model_print("Tuner %u\n", tuner->getTunerNumber());
  57                 stun->print();
  58                 tuner->printProblemsInfo();
  59                 model_print("----------------------------------\n\n\n");
  60         }
  61 }
  62
  63 void CompTuner::readData(uint numRuns) {
  64         for (uint i = 0; i < numRuns; i++) {
  65                 ifstream myfile;
  66                 char buffer[512];
  67                 uint tunernumber;
  68                 snprintf(buffer, sizeof(buffer), "tunernum%u", i);
  69                 myfile.open (buffer, ios::in);
  70                 myfile >> tunernumber;
  71                 myfile.close();
  72                 if (allTuners.getSize() <= tunernumber)
  73                         allTuners.setSize(tunernumber + 1);
  74                 if (allTuners.get(tunernumber) == NULL) {
  75                         snprintf(buffer, sizeof(buffer), "tuner%u", i);
  76                         allTuners.set(tunernumber, new TunerRecord(new SearchTuner(buffer), tunernumber));
  77                 }
  78                 //Add any new used records
  79                 snprintf(buffer, sizeof(buffer), "tuner%uused", i);
  80                 TunerRecord *tuner = allTuners.get(tunernumber);
  81                 tuner->getTuner()->addUsed(buffer);
  82
  83                 char problemname[512];
  84                 uint problemnumber;
  85                 snprintf(buffer, sizeof(buffer), "problem%u", i);
  86                 myfile.open(buffer, ios::in);
  87                 myfile.getline(problemname, sizeof(problemname));
  88                 myfile >> problemnumber;
  89                 myfile.close();
  90                 if (problems.getSize() <= problemnumber)
  91                         problems.setSize(problemnumber + 1);
  92                 if (problems.get(problemnumber) == NULL)
  93                         problems.set(problemnumber, new Problem(problemname));
  94                 Problem *problem = problems.get(problemnumber);
  95                 long long metric = -1;
  96                 int sat = IS_INDETER;
  97                 //Read data in from results file
  98                 snprintf(buffer, sizeof(buffer), "result%u", i);
  99
 100                 myfile.open (buffer, ios::in);
 101
 102
 103                 if (myfile.is_open()) {
 104                         myfile >> metric;
 105                         myfile >> sat;
 106                         myfile.close();
 107                 }
 108                 if (problem->getResult() == TUNERUNSETVALUE && sat != IS_INDETER) {
 109                         problem->setResult(sat);
 110                 } else if (problem->getResult() != sat && sat != IS_INDETER) {
 111                         model_print("******** Result has changed ********\n");
 112                 }
 113
 114                 if (metric != -1) {
 115                         if (tuner->getTime(problem) == -1)
 116                                 tuner->addProblem(problem);
 117                         tuner->setTime(problem, metric);
 118                 }
 119
 120         }
 121
 122 }
 123
 124 void CompTuner::tune() {
 125         Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
 126         for (uint b = 0; b < budget; b++) {
 127                 model_print("Round %u of %u\n", b, budget);
 128                 uint tSize = tunerV->getSize();
 129                 for (uint i = 0; i < tSize; i++) {
 130                         SearchTuner *tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
 131                         TunerRecord *tmp = new TunerRecord(tmpTuner);
 132                         tmp->setTunerNumber(allTuners.getSize());
 133                         model_print("Mutated tuner %u to generate tuner %u\n", tunerV->get(i)->getTunerNumber(), tmp->getTunerNumber());
 134                         allTuners.push(tmp);
 135                         tunerV->push(tmp);
 136                 }
 137
 138                 Hashtable<TunerRecord *, int, uint64_t> scores;
 139                 for (uint i = 0; i < problems.getSize(); i++) {
 140                         Problem *problem = problems.get(i);
 141                         Vector<TunerRecord *> places;
 142                         for (uint j = 0; j < tunerV->getSize(); j++) {
 143                                 TunerRecord *tuner = tunerV->get(j);
 144                                 long long metric = tuner->getTime(problem);
 145                                 if (metric == -1) {
 146                                         metric = evaluate(problem, tuner);
 147                                         if (tuner->getTime(problem) == -1) {
 148                                                 tuner->addProblem(problem);
 149                                         }
 150                                         model_print("%u.Problem<%s>\tTuner<%p, %d>\tMetric<%lld>\n", i, problem->getProblem(),tuner, tuner->getTunerNumber(), metric);
 151                                         model_print("*****************************\n");
 152                                         if (metric != -1)
 153                                                 tuner->setTime(problem, metric);
 154                                         else
 155                                                 tuner->setTime(problem, -2);
 156                                 }
 157                                 if (metric >= 0) {
 158                                         uint k = 0;
 159                                         for (; k < places.getSize(); k++) {
 160                                                 if (metric < places.get(k)->getTime(problem))
 161                                                         break;
 162                                         }
 163                                         model_print("place[%u]=Tuner<%p,%d>\n", k, tuner, tuner->getTunerNumber());
 164                                         places.insertAt(k, tuner);
 165                                 }
 166                         }
 167                         int points = 9;
 168                         for (uint k = 0; k < places.getSize() && points; k++) {
 169                                 TunerRecord *tuner = places.get(k);
 170                                 int currScore = 0;
 171                                 if (scores.contains(tuner))
 172                                         currScore = scores.get(tuner);
 173                                 currScore += points;
 174                                 model_print("Problem<%s>\tTuner<%p,%d>\tmetric<%d>\n", problem->getProblem(), tuner, tuner->getTunerNumber(),  currScore);
 175                                 model_print("**************************\n");
 176                                 scores.put(tuner, currScore);
 177                                 points = points / 3;
 178                         }
 179                 }
 180                 Vector<TunerRecord *> ranking;
 181                 for (uint i = 0; i < tunerV->getSize(); i++) {
 182                         TunerRecord *tuner = tunerV->get(i);
 183                         int score = 0;
 184                         if (scores.contains(tuner))
 185                                 score = scores.get(tuner);
 186                         uint j = 0;
 187                         for (; j < ranking.getSize(); j++) {
 188                                 TunerRecord *t = ranking.get(j);
 189                                 int tscore = 0;
 190                                 if (scores.contains(t))
 191                                         tscore = scores.get(t);
 192                                 if (score > tscore)
 193                                         break;
 194                         }
 195                         model_print("ranking[%u]=tuner<%p,%u>(Score=%d)\n", j, tuner, tuner->getTunerNumber(), score);
 196                         model_print("************************\n");
 197                         ranking.insertAt(j, tuner);
 198                 }
 199                 model_print("tunerSize=%u\trankingSize=%u\ttunerVSize=%u\n", tuners.getSize(), ranking.getSize(), tunerV->getSize());
 200                 for (uint i = tuners.getSize(); i < ranking.getSize(); i++) {
 201                         TunerRecord *tuner = ranking.get(i);
 202                         model_print("Removing tuner %u\n", tuner->getTunerNumber());
 203                         for (uint j = 0; j < tunerV->getSize(); j++) {
 204                                 if (tunerV->get(j) == tuner)
 205                                         tunerV->removeAt(j);
 206                         }
 207                 }
 208         }
 209         printData();
 210 }