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 <limits>
   8 #include "solver_interface.h"
   9
  10 CompTuner::CompTuner(uint _budget, uint _timeout) :
  11         BasicTuner(_budget, _timeout)
  12 {
  13 }
  14
  15 CompTuner::~CompTuner() {
  16
  17 }
  18
  19 void CompTuner::findBestTwoTuners() {
  20         if (allTuners.getSize() < 2) {
  21                 printData();
  22                 return;
  23         }
  24         TunerRecord *bestTuners[2];
  25         double score = DBL_MAX;
  26         for (uint j = 0; j < allTuners.getSize() - 1; j++) {
  27                 for (uint k = j + 1; k < allTuners.getSize(); k++) {
  28                         TunerRecord *tuner1 = allTuners.get(j);
  29                         TunerRecord *tuner2 = allTuners.get(k);
  30                         double mintimes[problems.getSize()];
  31                         for (uint l = 0; l < problems.getSize(); l++) {
  32                                 Problem *problem = problems.get(l);
  33                                 long long time1 = tuner1->getTime(problem);
  34                                 if(time1 == -1 || time1 == -2){
  35                                         time1=LLONG_MAX;
  36                                 }
  37                                 long long time2 = tuner2->getTime(problem);
  38                                 if(time2 == -1 || time2 == -2){
  39                                         time2 = LLONG_MAX;
  40                                 }
  41                                 mintimes[l] = pow(min(time1,time2), (double)1 / problems.getSize());
  42                         }
  43                         double result = 1;
  44                         for (uint l = 0; l < problems.getSize(); l++) {
  45                                 result *= mintimes[l];
  46                         }
  47                         if (result < score) {
  48                                 score = result;
  49                                 bestTuners[0] = tuner1;
  50                                 bestTuners[1] = tuner2;
  51                         }
  52                 }
  53         }
  54         model_print("Best 2 tuners:\n");
  55         for (uint i = 0; i < 2; i++) {
  56                 TunerRecord *tuner = bestTuners[i];
  57                 SearchTuner *stun = tuner->getTuner();
  58                 char buffer[512];
  59                 snprintf(buffer, sizeof(buffer), "best%u.tuner", i);
  60                 stun->serialize(buffer);
  61                 model_print("Tuner %u\n", tuner->getTunerNumber());
  62                 stun->print();
  63                 tuner->printProblemsInfo();
  64                 model_print("----------------------------------\n\n\n");
  65         }
  66 }
  67
  68
  69 void CompTuner::readData(uint numRuns) {
  70         for (uint i = 0; i < numRuns; i++) {
  71                 ifstream myfile;
  72                 char buffer[512];
  73                 uint tunernumber;
  74                 snprintf(buffer, sizeof(buffer), "tunernum%u", i);
  75                 myfile.open (buffer, ios::in);
  76                 myfile >> tunernumber;
  77                 myfile.close();
  78                 if (allTuners.getSize() <= tunernumber)
  79                         allTuners.setSize(tunernumber + 1);
  80                 if (allTuners.get(tunernumber) == NULL) {
  81                         snprintf(buffer, sizeof(buffer), "tuner%u", i);
  82                         allTuners.set(tunernumber, new TunerRecord(new SearchTuner(buffer), tunernumber));
  83                 }
  84                 //Add any new used records
  85                 snprintf(buffer, sizeof(buffer), "tuner%uused", i);
  86                 TunerRecord *tuner = allTuners.get(tunernumber);
  87                 tuner->getTuner()->addUsed(buffer);
  88
  89                 char problemname[512];
  90                 uint problemnumber;
  91                 snprintf(buffer, sizeof(buffer), "problem%u", i);
  92                 myfile.open(buffer, ios::in);
  93                 myfile.getline(problemname, sizeof(problemname));
  94                 myfile >> problemnumber;
  95                 myfile.close();
  96                 if (problems.getSize() <= problemnumber)
  97                         problems.setSize(problemnumber + 1);
  98                 if (problems.get(problemnumber) == NULL)
  99                         problems.set(problemnumber, new Problem(problemname));
 100                 Problem *problem = problems.get(problemnumber);
 101                 long long metric = -1;
 102                 int sat = IS_INDETER;
 103                 //Read data in from results file
 104                 snprintf(buffer, sizeof(buffer), "result%u", i);
 105
 106                 myfile.open (buffer, ios::in);
 107
 108
 109                 if (myfile.is_open()) {
 110                         myfile >> metric;
 111                         myfile >> sat;
 112                         myfile.close();
 113                 }
 114                 if (problem->getResult() == TUNERUNSETVALUE && sat != IS_INDETER) {
 115                         problem->setResult(sat);
 116                 } else if (problem->getResult() != sat && sat != IS_INDETER) {
 117                         model_print("******** Result has changed ********\n");
 118                 }
 119
 120                 if (metric != -1) {
 121                         if (tuner->getTime(problem) == -1)
 122                                 tuner->addProblem(problem);
 123                         tuner->setTime(problem, metric);
 124                 }
 125
 126         }
 127
 128 }
 129
 130 void CompTuner::tune() {
 131         Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
 132         for (uint b = 0; b < budget; b++) {
 133                 model_print("Round %u of %u\n", b, budget);
 134                 Hashtable<TunerRecord *, int, uint64_t> scores;
 135                 Vector<Vector<TunerRecord *> *> allplaces;
 136                 for (uint ii = 0; ii < problems.getSize(); ii++) {
 137                         allplaces.push(new Vector<TunerRecord *>());
 138                 }
 139                 for (uint j = 0; j < tunerV->getSize(); j++) {
 140                         TunerRecord *tuner = tunerV->get(j);
 141
 142                         for (uint i = 0; i < problems.getSize(); i++) {
 143                                 Vector<TunerRecord *> *places = allplaces.get(i);
 144                                 Problem *problem = problems.get(i);
 145                                 long long metric = tuner->getTime(problem);
 146                                 if (metric == -1) {
 147                                         metric = evaluate(problem, tuner);
 148                                         if (tuner->getTime(problem) == -1) {
 149                                                 tuner->addProblem(problem);
 150                                         }
 151                                         model_print("%u.Problem<%s>\tTuner<%p, %d>\tMetric<%lld>\n", i, problem->getProblem(),tuner, tuner->getTunerNumber(), metric);
 152                                         model_print("*****************************\n");
 153                                         if (metric != -1)
 154                                                 tuner->setTime(problem, metric);
 155                                         else
 156                                                 tuner->setTime(problem, -2);
 157
 158                                         if (tunerExists(tuner)) {
 159                                                 //Solving the problem and noticing the tuner
 160                                                 //already exists
 161                                                 tuner->setDuplicate(true);
 162                                                 break;
 163                                         }
 164                                 }
 165                                 if (metric >= 0) {
 166                                         uint k = 0;
 167                                         for (; k < places->getSize(); k++) {
 168                                                 if (metric < places->get(k)->getTime(problem))
 169                                                         break;
 170                                         }
 171                                         model_print("place[%u]=Tuner<%p,%d>\n", k, tuner, tuner->getTunerNumber());
 172                                         places->insertAt(k, tuner);
 173                                 }
 174                         }
 175                 }
 176                 for (uint ii = 0; ii < problems.getSize(); ii++) {
 177                         Problem *problem = problems.get(ii);
 178                         Vector<TunerRecord *> *places = allplaces.get(ii);
 179                         int points = 9;
 180                         for (uint k = 0; k < places->getSize() && points; k++) {
 181                                 TunerRecord *tuner = places->get(k);
 182                                 if (tuner->isDuplicate()) {
 183                                         continue;
 184                                 }
 185                                 int currScore = 0;
 186                                 if (scores.contains(tuner))
 187                                         currScore = scores.get(tuner);
 188                                 currScore += points;
 189                                 model_print("Problem<%s>\tTuner<%p,%d>\tmetric<%d>\n", problem->getProblem(), tuner, tuner->getTunerNumber(),  currScore);
 190                                 model_print("**************************\n");
 191                                 scores.put(tuner, currScore);
 192                                 points = points / 3;
 193                         }
 194                 }
 195                 for (uint ii = 0; ii < problems.getSize(); ii++) {
 196                         delete allplaces.get(ii);
 197                 }
 198                 Vector<TunerRecord *> ranking;
 199                 for (uint i = 0; i < tunerV->getSize(); i++) {
 200                         TunerRecord *tuner = tunerV->get(i);
 201                         int score = 0;
 202                         if (scores.contains(tuner))
 203                                 score = scores.get(tuner);
 204                         uint j = 0;
 205                         for (; j < ranking.getSize(); j++) {
 206                                 TunerRecord *t = ranking.get(j);
 207                                 int tscore = 0;
 208                                 if (scores.contains(t))
 209                                         tscore = scores.get(t);
 210                                 if (score > tscore)
 211                                         break;
 212                         }
 213                         model_print("ranking[%u]=tuner<%p,%u>(Score=%d)\n", j, tuner, tuner->getTunerNumber(), score);
 214                         model_print("************************\n");
 215                         ranking.insertAt(j, tuner);
 216                 }
 217                 model_print("tunerSize=%u\trankingSize=%u\ttunerVSize=%u\n", tuners.getSize(), ranking.getSize(), tunerV->getSize());
 218                 for (uint i = tuners.getSize(); i < ranking.getSize(); i++) {
 219                         TunerRecord *tuner = ranking.get(i);
 220                         model_print("Removing tuner %u\n", tuner->getTunerNumber());
 221                         for (uint j = 0; j < tunerV->getSize(); j++) {
 222                                 if (tunerV->get(j) == tuner)
 223                                         tunerV->removeAt(j);
 224                         }
 225                 }
 226                 uint tSize = tunerV->getSize();
 227                 for (uint i = 0; i < tSize; i++) {
 228                         SearchTuner *tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
 229                         while (subTunerIndex(tmpTuner) != -1) {
 230                                 model_print("******** New Tuner already explored...\n");
 231                                 delete tmpTuner;
 232                                 tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
 233                         }
 234                         TunerRecord *tmp = new TunerRecord(tmpTuner);
 235                         tmp->setTunerNumber(allTuners.getSize());
 236                         model_print("Mutated tuner %u to generate tuner %u\n", tunerV->get(i)->getTunerNumber(), tmp->getTunerNumber());
 237                         allTuners.push(tmp);
 238                         tunerV->push(tmp);
 239                 }
 240         }
 241         printData();
 242 }