1 #include "multituner.h"
3 #include "searchtuner.h"
13 Problem::Problem(const char *_problem) : result(UNSETVALUE) {
14 uint len = strlen(_problem);
15 problem = (char *) ourmalloc(len + 1);
16 memcpy(problem, _problem, len + 1);
23 void TunerRecord::setTime(Problem *problem, long long time) {
24 timetaken.put(problem, time);
27 long long TunerRecord::getTime(Problem *problem) {
28 if (timetaken.contains(problem))
29 return timetaken.get(problem);
33 TunerRecord *TunerRecord::changeTuner(SearchTuner *_newtuner) {
34 TunerRecord *tr = new TunerRecord(_newtuner);
35 for (uint i = 0; i < problems.getSize(); i++) {
36 tr->problems.push(problems.get(i));
41 MultiTuner::MultiTuner(uint _budget, uint _rounds, uint _timeout) :
42 budget(_budget), rounds(_rounds), timeout(_timeout), execnum(0) {
45 MultiTuner::~MultiTuner() {
46 for (uint i = 0; i < problems.getSize(); i++)
47 ourfree(problems.get(i));
48 for (uint i = 0; i < allTuners.getSize(); i++)
49 delete allTuners.get(i);
52 void MultiTuner::addProblem(const char *filename) {
53 problems.push(new Problem(filename));
56 void MultiTuner::printData() {
57 model_print("*********** DATA DUMP ***********\n");
58 for (uint i = 0; i < allTuners.getSize(); i++) {
59 TunerRecord *tuner = allTuners.get(i);
60 SearchTuner *stun = tuner->getTuner();
61 model_print("Tuner %u\n", i);
63 model_print("----------------------------------\n\n\n");
64 for (uint j = 0; j < tuner->problems.getSize(); j++) {
65 Problem *problem = tuner->problems.get(j);
66 model_print("Problem %s\n", problem->getProblem());
67 model_print("Time = %lld\n", tuner->getTime(problem));
72 void MultiTuner::addTuner(SearchTuner *tuner) {
73 TunerRecord *t = new TunerRecord(tuner);
75 t->tunernumber = allTuners.getSize();
79 long long MultiTuner::evaluate(Problem *problem, TunerRecord *tuner) {
82 snprintf(buffer, sizeof(buffer), "problem%u", execnum);
85 myfile.open (buffer, ios::out);
88 if (myfile.is_open()) {
89 myfile << problem->getProblem() << endl;
95 snprintf(buffer, sizeof(buffer), "tunernum%u", execnum);
98 myfile.open (buffer, ios::out);
101 if (myfile.is_open()) {
102 myfile << tuner->tunernumber << endl;
107 //Write out the tuner
108 snprintf(buffer, sizeof(buffer), "tuner%u", execnum);
109 tuner->getTuner()->serialize(buffer);
112 snprintf(buffer, sizeof(buffer), "./run.sh deserializerun %s %u tuner%u result%u > log%u", problem->getProblem(), timeout, execnum, execnum, execnum);
113 int status = system(buffer);
115 long long metric = -1;
116 int sat = IS_INDETER;
119 //Read data in from results file
120 snprintf(buffer, sizeof(buffer), "result%u", execnum);
123 myfile.open (buffer, ios::in);
126 if (myfile.is_open()) {
132 snprintf(buffer, sizeof(buffer), "tuner%uused", execnum);
133 tuner->getTuner()->addUsed(buffer);
135 //Increment execution count
138 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
139 problem->result = sat;
140 } else if (problem->result != sat && sat != IS_INDETER) {
141 model_print("******** Result has changed ********\n");
146 void MultiTuner::tuneComp() {
147 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
148 for (uint b = 0; b < budget; b++) {
149 uint tSize = tunerV->getSize();
150 for (uint i = 0; i < tSize; i++) {
151 SearchTuner *tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
152 TunerRecord *tmp = new TunerRecord(tmpTuner);
153 tmp->tunernumber = allTuners.getSize();
158 Hashtable<TunerRecord *, int, uint64_t> scores;
159 for (uint i = 0; i < problems.getSize(); i++) {
160 Problem *problem = problems.get(i);
161 Vector<TunerRecord *> places;
162 for (uint j = 0; j < tunerV->getSize(); j++) {
163 TunerRecord *tuner = tunerV->get(j);
164 long long metric = tuner->getTime(problem);
166 metric = evaluate(problem, tuner);
168 tuner->setTime(problem, metric);
172 for (; k < places.getSize(); k++) {
173 if (metric < places.get(k)->getTime(problem))
176 places.insertAt(k, tuner);
180 for (uint k = 0; k < places.getSize() && points; k++) {
181 TunerRecord *tuner = places.get(k);
184 if (scores.contains(tuner))
185 currScore = scores.get(tuner);
187 scores.put(tuner, currScore);
190 Vector<TunerRecord *> ranking;
191 for (uint i = 0; i < tunerV->getSize(); i++) {
192 TunerRecord *tuner = tunerV->get(i);
194 if (scores.contains(tuner))
195 score = scores.get(tuner);
197 for (; j < ranking.getSize(); j++) {
198 TunerRecord *t = ranking.get(j);
200 if (scores.contains(t))
201 tscore = scores.get(t);
205 ranking.insertAt(j, tuner);
207 for (uint i = tuners.getSize(); i < ranking.getSize(); i++) {
208 TunerRecord *tuner = ranking.get(i);
209 for (uint j = 0; j < tunerV->getSize(); j++) {
210 if (tunerV->get(j) == tuner)
218 void MultiTuner::mapProblemsToTuners(Vector<TunerRecord *> *tunerV) {
219 for (uint i = 0; i < problems.getSize(); i++) {
220 Problem *problem = problems.get(i);
221 TunerRecord *bestTuner = NULL;
222 long long bestscore = 0;
223 for (uint j = 0; j < tunerV->getSize(); j++) {
224 TunerRecord *tuner = tunerV->get(j);
225 long long metric = tuner->getTime(problem);
227 metric = evaluate(problem, tuner);
229 tuner->setTime(problem, metric);
231 if ((bestTuner == NULL && metric != -1) ||
232 (metric < bestscore && metric != -1)) {
237 if (bestTuner != NULL)
238 bestTuner->problems.push(problem);
242 void clearVector(Vector<TunerRecord *> *tunerV) {
243 for (uint j = 0; j < tunerV->getSize(); j++) {
244 TunerRecord *tuner = tunerV->get(j);
245 tuner->problems.clear();
249 void MultiTuner::tuneK() {
250 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
251 for (uint i = 0; i < rounds; i++) {
253 mapProblemsToTuners(tunerV);
254 improveTuners(tunerV);
256 model_print("Best tuners\n");
257 for (uint j = 0; j < tunerV->getSize(); j++) {
258 TunerRecord *tuner = tunerV->get(j);
260 sprintf(buffer, "tuner%u.conf", j);
261 tuner->getTuner()->serialize(buffer);
262 tuner->getTuner()->print();
267 void MultiTuner::improveTuners(Vector<TunerRecord *> *tunerV) {
268 for (uint j = 0; j < tunerV->getSize(); j++) {
269 TunerRecord *tuner = tunerV->get(j);
270 TunerRecord *newtuner = tune(tuner);
271 tunerV->set(j, newtuner);
275 double MultiTuner::evaluateAll(TunerRecord *tuner) {
277 for (uint i = 0; i < tuner->problems.getSize(); i++) {
278 Problem *problem = tuner->problems.get(i);
279 long long metric = tuner->getTime(problem);
281 metric = evaluate(problem, tuner);
283 tuner->setTime(problem, metric);
286 double score = metric;
289 return pow(product, 1 / ((double)tuner->problems.getSize()));
292 SearchTuner *MultiTuner::mutateTuner(SearchTuner *oldTuner, uint k) {
293 SearchTuner *newTuner = oldTuner->copyUsed();
294 uint numSettings = oldTuner->getSize();
295 uint settingsToMutate = (uint)(AUTOTUNERFACTOR * (((double)numSettings) * (budget - k)) / (budget));
296 if (settingsToMutate < 1)
297 settingsToMutate = 1;
298 model_print("Mutating %u settings\n", settingsToMutate);
299 while (settingsToMutate-- != 0) {
300 newTuner->randomMutate();
305 TunerRecord *MultiTuner::tune(TunerRecord *tuner) {
306 TunerRecord *bestTuner = NULL;
307 double bestScore = DBL_MAX;
309 TunerRecord *oldTuner = tuner;
310 double base_temperature = evaluateAll(oldTuner);
311 double oldScore = base_temperature;
313 for (uint i = 0; i < budget; i++) {
314 SearchTuner *tmpTuner = mutateTuner(oldTuner->getTuner(), i);
315 TunerRecord *newTuner = oldTuner->changeTuner(tmpTuner);
316 newTuner->tunernumber = allTuners.getSize();
317 allTuners.push(newTuner);
318 double newScore = evaluateAll(newTuner);
319 newTuner->tuner->printUsed();
320 model_print("Received score %f\n", newScore);
321 double scoreDiff = newScore - oldScore; //smaller is better
322 if (newScore < bestScore) {
323 bestScore = newScore;
324 bestTuner = newTuner;
331 double currTemp = base_temperature * (((double)budget - i) / budget);
332 acceptanceP = exp(-scoreDiff / currTemp);
334 double ran = ((double)random()) / RAND_MAX;
335 if (ran <= acceptanceP) {