+++ /dev/null
-#include "multituner.h"
-#include <float.h>
-#include <math.h>
-#include "searchtuner.h"
-#include <iostream>
-#include <fstream>
-#include "solver_interface.h"
-
-MultiTuner::MultiTuner(uint _budget, uint _rounds, uint _timeout) :
- BasicTuner(_budget, _timeout),
- rounds(_rounds)
-{
-}
-
-void MultiTuner::findBestThreeTuners() {
- if (allTuners.getSize() < 3) {
- printData();
- return;
- }
- TunerRecord *bestTuners[3];
- double score = DBL_MAX;
- for (uint i = 0; i < allTuners.getSize() - 2; i++) {
- for (uint j = i + 1; j < allTuners.getSize() - 1; j++) {
- for (uint k = j + 1; k < allTuners.getSize(); k++) {
- TunerRecord *tuner1 = allTuners.get(i);
- TunerRecord *tuner2 = allTuners.get(j);
- TunerRecord *tuner3 = allTuners.get(k);
- double mintimes[problems.getSize()];
- for (uint l = 0; l < problems.getSize(); l++) {
- Problem *problem = problems.get(l);
- mintimes[l] = pow(min(tuner1->getTime(problem), tuner2->getTime(problem), tuner3->getTime(problem)), (double)1 / problems.getSize());
- }
- double result = 1;
- for (uint l = 0; l < problems.getSize(); l++) {
- result *= mintimes[l];
- }
- if (result < score) {
- score = result;
- bestTuners[0] = tuner1;
- bestTuners[1] = tuner2;
- bestTuners[2] = tuner3;
- }
- }
- }
- }
- model_print("Best 3 tuners:\n");
- for (uint i = 0; i < 3; i++) {
- TunerRecord *tuner = bestTuners[i];
- SearchTuner *stun = tuner->getTuner();
- char buffer[512];
- snprintf(buffer, sizeof(buffer), "best%u.tuner", i);
- stun->serialize(buffer);
- model_print("Tuner %u\n", tuner->getTunerNumber());
- stun->print();
- tuner->printProblemsInfo();
- model_print("----------------------------------\n\n\n");
- }
-}
-
-void MultiTuner::readData(uint numRuns) {
- for (uint i = 0; i < numRuns; i++) {
- ifstream myfile;
- char buffer[512];
- uint tunernumber;
- snprintf(buffer, sizeof(buffer), "tunernum%u", i);
- myfile.open (buffer, ios::in);
- myfile >> tunernumber;
- myfile.close();
- if (allTuners.getSize() <= tunernumber)
- allTuners.setSize(tunernumber + 1);
- if (allTuners.get(tunernumber) == NULL) {
- snprintf(buffer, sizeof(buffer), "tuner%u", i);
- allTuners.set(tunernumber, new TunerRecord(new SearchTuner(buffer), tunernumber));
- }
- //Add any new used records
- snprintf(buffer, sizeof(buffer), "tuner%uused", i);
- TunerRecord *tuner = allTuners.get(tunernumber);
- tuner->getTuner()->addUsed(buffer);
-
- char problemname[512];
- uint problemnumber;
- snprintf(buffer, sizeof(buffer), "problem%u", i);
- myfile.open(buffer, ios::in);
- myfile.getline(problemname, sizeof(problemname));
- myfile >> problemnumber;
- myfile.close();
- if (problems.getSize() <= problemnumber)
- problems.setSize(problemnumber + 1);
- if (problems.get(problemnumber) == NULL)
- problems.set(problemnumber, new Problem(problemname));
- Problem *problem = problems.get(problemnumber);
- long long metric = -1;
- int sat = IS_INDETER;
- //Read data in from results file
- snprintf(buffer, sizeof(buffer), "result%u", i);
-
- myfile.open (buffer, ios::in);
-
-
- if (myfile.is_open()) {
- myfile >> metric;
- myfile >> sat;
- myfile.close();
- }
- if (problem->getResult() == TUNERUNSETVALUE && sat != IS_INDETER) {
- problem->setResult(sat);
- } else if (problem->getResult() != sat && sat != IS_INDETER) {
- model_print("******** Result has changed ********\n");
- }
-
- if (metric != -1) {
- if (tuner->getTime(problem) == -1)
- tuner->addProblem(problem);
- tuner->setTime(problem, metric);
- }
-
- }
-
-}
-
-void MultiTuner::tune() {
- Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
- for (uint b = 0; b < budget; b++) {
- model_print("Round %u of %u\n", b, budget);
- uint tSize = tunerV->getSize();
- for (uint i = 0; i < tSize; i++) {
- SearchTuner *tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
- TunerRecord *tmp = new TunerRecord(tmpTuner);
- tmp->setTunerNumber(allTuners.getSize());
- model_print("Mutated tuner %u to generate tuner %u\n", tunerV->get(i)->getTunerNumber(), tmp->getTunerNumber());
- allTuners.push(tmp);
- tunerV->push(tmp);
- }
-
- Hashtable<TunerRecord *, int, uint64_t> scores;
- for (uint i = 0; i < problems.getSize(); i++) {
- Problem *problem = problems.get(i);
- Vector<TunerRecord *> places;
- for (uint j = 0; j < tunerV->getSize(); j++) {
- TunerRecord *tuner = tunerV->get(j);
- long long metric = tuner->getTime(problem);
- if (metric == -1) {
- metric = evaluate(problem, tuner);
- if (tuner->getTime(problem) == -1) {
- tuner->addProblem(problem);
- }
- model_print("%u.Problem<%s>\tTuner<%p, %d>\tMetric<%lld>\n", i, problem->getProblem(),tuner, tuner->getTunerNumber(), metric);
- model_print("*****************************\n");
- if (metric != -1)
- tuner->setTime(problem, metric);
- else
- tuner->setTime(problem, -2);
- }
- if (metric >= 0) {
- uint k = 0;
- for (; k < places.getSize(); k++) {
- if (metric < places.get(k)->getTime(problem))
- break;
- }
- model_print("place[%u]=Tuner<%p,%d>\n", k, tuner, tuner->getTunerNumber());
- places.insertAt(k, tuner);
- }
- }
- int points = 9;
- for (uint k = 0; k < places.getSize() && points; k++) {
- TunerRecord *tuner = places.get(k);
- int currScore = 0;
- if (scores.contains(tuner))
- currScore = scores.get(tuner);
- currScore += points;
- model_print("Problem<%s>\tTuner<%p,%d>\tmetric<%d>\n", problem->getProblem(), tuner, tuner->getTunerNumber(), currScore);
- model_print("**************************\n");
- scores.put(tuner, currScore);
- points = points / 3;
- }
- }
- Vector<TunerRecord *> ranking;
- for (uint i = 0; i < tunerV->getSize(); i++) {
- TunerRecord *tuner = tunerV->get(i);
- int score = 0;
- if (scores.contains(tuner))
- score = scores.get(tuner);
- uint j = 0;
- for (; j < ranking.getSize(); j++) {
- TunerRecord *t = ranking.get(j);
- int tscore = 0;
- if (scores.contains(t))
- tscore = scores.get(t);
- if (score > tscore)
- break;
- }
- model_print("ranking[%u]=tuner<%p,%u>(Score=%d)\n", j, tuner, tuner->getTunerNumber(), score);
- model_print("************************\n");
- ranking.insertAt(j, tuner);
- }
- model_print("tunerSize=%u\trankingSize=%u\ttunerVSize=%u\n", tuners.getSize(), ranking.getSize(), tunerV->getSize());
- for (uint i = tuners.getSize(); i < ranking.getSize(); i++) {
- TunerRecord *tuner = ranking.get(i);
- model_print("Removing tuner %u\n", tuner->getTunerNumber());
- for (uint j = 0; j < tunerV->getSize(); j++) {
- if (tunerV->get(j) == tuner)
- tunerV->removeAt(j);
- }
- }
- }
- printData();
-}
-
-void MultiTuner::mapProblemsToTuners(Vector<TunerRecord *> *tunerV) {
- for (uint i = 0; i < problems.getSize(); i++) {
- Problem *problem = problems.get(i);
- TunerRecord *bestTuner = NULL;
- long long bestscore = 0;
- for (uint j = 0; j < tunerV->getSize(); j++) {
- TunerRecord *tuner = tunerV->get(j);
- long long metric = tuner->getTime(problem);
- if (metric == -1) {
- metric = evaluate(problem, tuner);
- if (metric != -1)
- tuner->setTime(problem, metric);
- else
- tuner->setTime(problem, -2);
- }
- if ((bestTuner == NULL && metric >= 0) ||
- (metric < bestscore && metric >= 0)) {
- bestTuner = tuner;
- bestscore = metric;
- }
- }
- if (bestTuner != NULL)
- bestTuner->addProblem(problem);
- }
-}
-
-void clearVector(Vector<TunerRecord *> *tunerV) {
- for (uint j = 0; j < tunerV->getSize(); j++) {
- TunerRecord *tuner = tunerV->get(j);
- tuner->problems.clear();
- }
-}
-
-void MultiTuner::tuneK() {
- Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
- for (uint i = 0; i < rounds; i++) {
- clearVector(tunerV);
- mapProblemsToTuners(tunerV);
- improveTuners(tunerV);
- }
- model_print("Best tuners\n");
- for (uint j = 0; j < tunerV->getSize(); j++) {
- TunerRecord *tuner = tunerV->get(j);
- char buffer[256];
- sprintf(buffer, "tuner%u.conf", j);
- tuner->getTuner()->serialize(buffer);
- tuner->getTuner()->print();
- }
- delete tunerV;
-}
-
-void MultiTuner::improveTuners(Vector<TunerRecord *> *tunerV) {
- for (uint j = 0; j < tunerV->getSize(); j++) {
- TunerRecord *tuner = tunerV->get(j);
- TunerRecord *newtuner = tune(tuner);
- tunerV->set(j, newtuner);
- }
-}
-
-double MultiTuner::evaluateAll(TunerRecord *tuner) {
- double product = 1;
- for (uint i = 0; i < tuner->problemsSize(); i++) {
- Problem *problem = tuner->getProblem(i);
- long long metric = tuner->getTime(problem);
- if (metric == -1) {
- metric = evaluate(problem, tuner);
- if (metric != -1)
- tuner->setTime(problem, metric);
- else
- tuner->setTime(problem, -2);
- }
-
- double score = metric;
- if (metric < 0)
- score = timeout;
- product *= score;
- }
- return pow(product, 1 / ((double)tuner->problemsSize()));
-}
-
-TunerRecord *MultiTuner::tune(TunerRecord *tuner) {
- TunerRecord *bestTuner = NULL;
- double bestScore = DBL_MAX;
-
- TunerRecord *oldTuner = tuner;
- double base_temperature = evaluateAll(oldTuner);
- double oldScore = base_temperature;
-
- for (uint i = 0; i < budget; i++) {
- SearchTuner *tmpTuner = mutateTuner(oldTuner->getTuner(), i);
- TunerRecord *newTuner = oldTuner->changeTuner(tmpTuner);
- newTuner->setTunerNumber( allTuners.getSize() );
- allTuners.push(newTuner);
- double newScore = evaluateAll(newTuner);
- newTuner->getTuner()->printUsed();
- model_print("Received score %f\n", newScore);
- double scoreDiff = newScore - oldScore; //smaller is better
- if (newScore < bestScore) {
- bestScore = newScore;
- bestTuner = newTuner;
- }
-
- double acceptanceP;
- if (scoreDiff < 0) {
- acceptanceP = 1;
- } else {
- double currTemp = base_temperature * (((double)budget - i) / budget);
- acceptanceP = exp(-scoreDiff / currTemp);
- }
- double ran = ((double)random()) / RAND_MAX;
- if (ran <= acceptanceP) {
- oldScore = newScore;
- oldTuner = newTuner;
- }
- }
-
- return bestTuner;
-}
-
projects / satune.git / blobdiff