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