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::findBestTwoTuners() {
  19         if (allTuners.getSize() < 2) {
  20                 printData();
  21                 return;
  22         }
  23         TunerRecord *bestTuners[2];
  24         double score = DBL_MAX;
  25         for (uint j = 0; j < allTuners.getSize() - 1; j++) {
  26                 for (uint k = j + 1; k < allTuners.getSize(); k++) {
  27                         TunerRecord *tuner1 = allTuners.get(j);
  28                         TunerRecord *tuner2 = allTuners.get(k);
  29                         double mintimes[problems.getSize()];
  30                         for (uint l = 0; l < problems.getSize(); l++) {
  31                                 Problem *problem = problems.get(l);
  32                                 long long time1 = tuner1->getTime(problem);
  33                                 long long time2 = tuner2->getTime(problem);
  34                                 long long minTime =DBL_MAX;
  35                                 if(time1 != -1 || time2 != -1){
  36                                         minTime = min(time1,time2);
  37                                 }
  38                                 mintimes[l] = pow(minTime, (double)1 / problems.getSize());
  39                         }
  40                         double result = 1;
  41                         for (uint l = 0; l < problems.getSize(); l++) {
  42                                 result *= mintimes[l];
  43                         }
  44                         if (result < score) {
  45                                 score = result;
  46                                 bestTuners[0] = tuner1;
  47                                 bestTuners[1] = tuner2;
  48                         }
  49                 }
  50         }
  51         model_print("Best 2 tuners:\n");
  52         for (uint i = 0; i < 2; i++) {
  53                 TunerRecord *tuner = bestTuners[i];
  54                 SearchTuner *stun = tuner->getTuner();
  55                 char buffer[512];
  56                 snprintf(buffer, sizeof(buffer), "best%u.tuner", i);
  57                 stun->serialize(buffer);
  58                 model_print("Tuner %u\n", tuner->getTunerNumber());
  59                 stun->print();
  60                 tuner->printProblemsInfo();
  61                 model_print("----------------------------------\n\n\n");
  62         }
  63 }
  64
  65
  66 void CompTuner::readData(uint numRuns) {
  67         for (uint i = 0; i < numRuns; i++) {
  68                 ifstream myfile;
  69                 char buffer[512];
  70                 uint tunernumber;
  71                 snprintf(buffer, sizeof(buffer), "tunernum%u", i);
  72                 myfile.open (buffer, ios::in);
  73                 myfile >> tunernumber;
  74                 myfile.close();
  75                 if (allTuners.getSize() <= tunernumber)
  76                         allTuners.setSize(tunernumber + 1);
  77                 if (allTuners.get(tunernumber) == NULL) {
  78                         snprintf(buffer, sizeof(buffer), "tuner%u", i);
  79                         allTuners.set(tunernumber, new TunerRecord(new SearchTuner(buffer), tunernumber));
  80                 }
  81                 //Add any new used records
  82                 snprintf(buffer, sizeof(buffer), "tuner%uused", i);
  83                 TunerRecord *tuner = allTuners.get(tunernumber);
  84                 tuner->getTuner()->addUsed(buffer);
  85
  86                 char problemname[512];
  87                 uint problemnumber;
  88                 snprintf(buffer, sizeof(buffer), "problem%u", i);
  89                 myfile.open(buffer, ios::in);
  90                 myfile.getline(problemname, sizeof(problemname));
  91                 myfile >> problemnumber;
  92                 myfile.close();
  93                 if (problems.getSize() <= problemnumber)
  94                         problems.setSize(problemnumber + 1);
  95                 if (problems.get(problemnumber) == NULL)
  96                         problems.set(problemnumber, new Problem(problemname));
  97                 Problem *problem = problems.get(problemnumber);
  98                 long long metric = -1;
  99                 int sat = IS_INDETER;
 100                 //Read data in from results file
 101                 snprintf(buffer, sizeof(buffer), "result%u", i);
 102
 103                 myfile.open (buffer, ios::in);
 104
 105
 106                 if (myfile.is_open()) {
 107                         myfile >> metric;
 108                         myfile >> sat;
 109                         myfile.close();
 110                 }
 111                 if (problem->getResult() == TUNERUNSETVALUE && sat != IS_INDETER) {
 112                         problem->setResult(sat);
 113                 } else if (problem->getResult() != sat && sat != IS_INDETER) {
 114                         model_print("******** Result has changed ********\n");
 115                 }
 116
 117                 if (metric != -1) {
 118                         if (tuner->getTime(problem) == -1)
 119                                 tuner->addProblem(problem);
 120                         tuner->setTime(problem, metric);
 121                 }
 122
 123         }
 124
 125 }
 126
 127 void CompTuner::tune() {
 128         Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
 129         for (uint b = 0; b < budget; b++) {
 130                 model_print("Round %u of %u\n", b, budget);
 131                 Hashtable<TunerRecord *, int, uint64_t> scores;
 132                 Vector<Vector<TunerRecord *> *> allplaces;
 133                 for (uint ii = 0; ii < problems.getSize(); ii++) {
 134                         allplaces.push(new Vector<TunerRecord *>());
 135                 }
 136                 for (uint j = 0; j < tunerV->getSize(); j++) {
 137                         TunerRecord *tuner = tunerV->get(j);
 138
 139                         for (uint i = 0; i < problems.getSize(); i++) {
 140                                 Vector<TunerRecord *> *places = allplaces.get(i);
 141                                 Problem *problem = problems.get(i);
 142                                 long long metric = tuner->getTime(problem);
 143                                 if (metric == -1) {
 144                                         metric = evaluate(problem, tuner);
 145                                         if (tuner->getTime(problem) == -1) {
 146                                                 tuner->addProblem(problem);
 147                                         }
 148                                         model_print("%u.Problem<%s>\tTuner<%p, %d>\tMetric<%lld>\n", i, problem->getProblem(),tuner, tuner->getTunerNumber(), metric);
 149                                         model_print("*****************************\n");
 150                                         if (metric != -1)
 151                                                 tuner->setTime(problem, metric);
 152                                         else
 153                                                 tuner->setTime(problem, -2);
 154
 155                                         if (tunerExists(tuner)) {
 156                                                 //Solving the problem and noticing the tuner
 157                                                 //already exists
 158                                                 tuner->setDuplicate(true);
 159                                                 break;
 160                                         }
 161                                 }
 162                                 if (metric >= 0) {
 163                                         uint k = 0;
 164                                         for (; k < places->getSize(); k++) {
 165                                                 if (metric < places->get(k)->getTime(problem))
 166                                                         break;
 167                                         }
 168                                         model_print("place[%u]=Tuner<%p,%d>\n", k, tuner, tuner->getTunerNumber());
 169                                         places->insertAt(k, tuner);
 170                                 }
 171                         }
 172                 }
 173                 for (uint ii = 0; ii < problems.getSize(); ii++) {
 174                         Problem *problem = problems.get(ii);
 175                         Vector<TunerRecord *> *places = allplaces.get(ii);
 176                         int points = 9;
 177                         for (uint k = 0; k < places->getSize() && points; k++) {
 178                                 TunerRecord *tuner = places->get(k);
 179                                 if (tuner->isDuplicate()) {
 180                                         continue;
 181                                 }
 182                                 int currScore = 0;
 183                                 if (scores.contains(tuner))
 184                                         currScore = scores.get(tuner);
 185                                 currScore += points;
 186                                 model_print("Problem<%s>\tTuner<%p,%d>\tmetric<%d>\n", problem->getProblem(), tuner, tuner->getTunerNumber(),  currScore);
 187                                 model_print("**************************\n");
 188                                 scores.put(tuner, currScore);
 189                                 points = points / 3;
 190                         }
 191                 }
 192                 for (uint ii = 0; ii < problems.getSize(); ii++) {
 193                         delete allplaces.get(ii);
 194                 }
 195                 Vector<TunerRecord *> ranking;
 196                 for (uint i = 0; i < tunerV->getSize(); i++) {
 197                         TunerRecord *tuner = tunerV->get(i);
 198                         int score = 0;
 199                         if (scores.contains(tuner))
 200                                 score = scores.get(tuner);
 201                         uint j = 0;
 202                         for (; j < ranking.getSize(); j++) {
 203                                 TunerRecord *t = ranking.get(j);
 204                                 int tscore = 0;
 205                                 if (scores.contains(t))
 206                                         tscore = scores.get(t);
 207                                 if (score > tscore)
 208                                         break;
 209                         }
 210                         model_print("ranking[%u]=tuner<%p,%u>(Score=%d)\n", j, tuner, tuner->getTunerNumber(), score);
 211                         model_print("************************\n");
 212                         ranking.insertAt(j, tuner);
 213                 }
 214                 model_print("tunerSize=%u\trankingSize=%u\ttunerVSize=%u\n", tuners.getSize(), ranking.getSize(), tunerV->getSize());
 215                 for (uint i = tuners.getSize(); i < ranking.getSize(); i++) {
 216                         TunerRecord *tuner = ranking.get(i);
 217                         model_print("Removing tuner %u\n", tuner->getTunerNumber());
 218                         for (uint j = 0; j < tunerV->getSize(); j++) {
 219                                 if (tunerV->get(j) == tuner)
 220                                         tunerV->removeAt(j);
 221                         }
 222                 }
 223                 uint tSize = tunerV->getSize();
 224                 for (uint i = 0; i < tSize; i++) {
 225                         SearchTuner *tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
 226                         while (subTunerIndex(tmpTuner) != -1) {
 227                                 model_print("******** New Tuner already explored...\n");
 228                                 delete tmpTuner;
 229                                 tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
 230                         }
 231                         TunerRecord *tmp = new TunerRecord(tmpTuner);
 232                         tmp->setTunerNumber(allTuners.getSize());
 233                         model_print("Mutated tuner %u to generate tuner %u\n", tunerV->get(i)->getTunerNumber(), tmp->getTunerNumber());
 234                         allTuners.push(tmp);
 235                         tunerV->push(tmp);
 236                 }
 237         }
 238         printData();
 239 }