1 #include "multituner.h"
3 #include "searchtuner.h"
13 Problem::Problem(const char *_problem) : problemnumber(-1), 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 Problem *p = new Problem(filename);
54 p->problemnumber = problems.getSize();
58 void MultiTuner::printData() {
59 model_print("*********** DATA DUMP ***********\n");
60 for (uint i = 0; i < allTuners.getSize(); i++) {
61 TunerRecord *tuner = allTuners.get(i);
62 SearchTuner *stun = tuner->getTuner();
63 model_print("Tuner %u\n", i);
65 model_print("----------------------------------\n\n\n");
66 for (uint j = 0; j < tuner->problems.getSize(); j++) {
67 Problem *problem = tuner->problems.get(j);
68 model_print("Problem %s\n", problem->getProblem());
69 model_print("Time = %lld\n", tuner->getTime(problem));
74 void MultiTuner::addTuner(SearchTuner *tuner) {
75 TunerRecord *t = new TunerRecord(tuner);
77 t->tunernumber = allTuners.getSize();
82 void MultiTuner::readData(uint numRuns) {
83 for (uint i = 0; i < numRuns; i++) {
87 snprintf(buffer, sizeof(buffer), "tunernum%u", i);
88 myfile.open (buffer, ios::in);
89 myfile >> tunernumber;
91 if (allTuners.getSize() <= tunernumber)
92 allTuners.setSize(tunernumber + 1);
93 if (allTuners.get(tunernumber) == NULL) {
94 snprintf(buffer, sizeof(buffer), "tuner%u", i);
95 allTuners.set(tunernumber, new TunerRecord(new SearchTuner(buffer)));
97 //Add any new used records
98 snprintf(buffer, sizeof(buffer), "tuner%uused", i);
99 TunerRecord *tuner = allTuners.get(tunernumber);
100 tuner->getTuner()->addUsed(buffer);
102 char problemname[512];
104 snprintf(buffer, sizeof(buffer), "problem%u", i);
105 myfile.open(buffer, ios::in);
106 myfile.getline(problemname, sizeof(problemname));
107 myfile >> problemnumber;
109 if (problems.getSize() <= problemnumber)
110 problems.setSize(problemnumber + 1);
111 if (problems.get(problemnumber) == NULL)
112 problems.set(problemnumber, new Problem(problemname));
113 Problem *problem = problems.get(problemnumber);
114 long long metric = -1;
115 int sat = IS_INDETER;
116 //Read data in from results file
117 snprintf(buffer, sizeof(buffer), "result%u", execnum);
119 myfile.open (buffer, ios::in);
122 if (myfile.is_open()) {
127 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
128 problem->result = sat;
129 } else if (problem->result != sat && sat != IS_INDETER) {
130 model_print("******** Result has changed ********\n");
134 tuner->setTime(problem, metric);
141 long long MultiTuner::evaluate(Problem *problem, TunerRecord *tuner) {
144 snprintf(buffer, sizeof(buffer), "problem%u", execnum);
147 myfile.open (buffer, ios::out);
150 if (myfile.is_open()) {
151 myfile << problem->getProblem() << endl;
152 myfile << problem->problemnumber << endl;
158 snprintf(buffer, sizeof(buffer), "tunernum%u", execnum);
161 myfile.open (buffer, ios::out);
164 if (myfile.is_open()) {
165 myfile << tuner->tunernumber << endl;
170 //Write out the tuner
171 snprintf(buffer, sizeof(buffer), "tuner%u", execnum);
172 tuner->getTuner()->serialize(buffer);
175 snprintf(buffer, sizeof(buffer), "./run.sh deserializerun %s %u tuner%u result%u > log%u", problem->getProblem(), timeout, execnum, execnum, execnum);
176 int status = system(buffer);
178 long long metric = -1;
179 int sat = IS_INDETER;
182 //Read data in from results file
183 snprintf(buffer, sizeof(buffer), "result%u", execnum);
186 myfile.open (buffer, ios::in);
189 if (myfile.is_open()) {
195 snprintf(buffer, sizeof(buffer), "tuner%uused", execnum);
196 tuner->getTuner()->addUsed(buffer);
198 //Increment execution count
201 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
202 problem->result = sat;
203 } else if (problem->result != sat && sat != IS_INDETER) {
204 model_print("******** Result has changed ********\n");
209 void MultiTuner::tuneComp() {
210 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
211 for (uint b = 0; b < budget; b++) {
212 uint tSize = tunerV->getSize();
213 for (uint i = 0; i < tSize; i++) {
214 SearchTuner *tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
215 TunerRecord *tmp = new TunerRecord(tmpTuner);
216 tmp->tunernumber = allTuners.getSize();
221 Hashtable<TunerRecord *, int, uint64_t> scores;
222 for (uint i = 0; i < problems.getSize(); i++) {
223 Problem *problem = problems.get(i);
224 Vector<TunerRecord *> places;
225 for (uint j = 0; j < tunerV->getSize(); j++) {
226 TunerRecord *tuner = tunerV->get(j);
227 long long metric = tuner->getTime(problem);
229 metric = evaluate(problem, tuner);
231 tuner->setTime(problem, metric);
235 for (; k < places.getSize(); k++) {
236 if (metric < places.get(k)->getTime(problem))
239 places.insertAt(k, tuner);
243 for (uint k = 0; k < places.getSize() && points; k++) {
244 TunerRecord *tuner = places.get(k);
247 if (scores.contains(tuner))
248 currScore = scores.get(tuner);
250 scores.put(tuner, currScore);
253 Vector<TunerRecord *> ranking;
254 for (uint i = 0; i < tunerV->getSize(); i++) {
255 TunerRecord *tuner = tunerV->get(i);
257 if (scores.contains(tuner))
258 score = scores.get(tuner);
260 for (; j < ranking.getSize(); j++) {
261 TunerRecord *t = ranking.get(j);
263 if (scores.contains(t))
264 tscore = scores.get(t);
268 ranking.insertAt(j, tuner);
270 for (uint i = tuners.getSize(); i < ranking.getSize(); i++) {
271 TunerRecord *tuner = ranking.get(i);
272 for (uint j = 0; j < tunerV->getSize(); j++) {
273 if (tunerV->get(j) == tuner)
281 void MultiTuner::mapProblemsToTuners(Vector<TunerRecord *> *tunerV) {
282 for (uint i = 0; i < problems.getSize(); i++) {
283 Problem *problem = problems.get(i);
284 TunerRecord *bestTuner = NULL;
285 long long bestscore = 0;
286 for (uint j = 0; j < tunerV->getSize(); j++) {
287 TunerRecord *tuner = tunerV->get(j);
288 long long metric = tuner->getTime(problem);
290 metric = evaluate(problem, tuner);
292 tuner->setTime(problem, metric);
294 if ((bestTuner == NULL && metric != -1) ||
295 (metric < bestscore && metric != -1)) {
300 if (bestTuner != NULL)
301 bestTuner->problems.push(problem);
305 void clearVector(Vector<TunerRecord *> *tunerV) {
306 for (uint j = 0; j < tunerV->getSize(); j++) {
307 TunerRecord *tuner = tunerV->get(j);
308 tuner->problems.clear();
312 void MultiTuner::tuneK() {
313 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
314 for (uint i = 0; i < rounds; i++) {
316 mapProblemsToTuners(tunerV);
317 improveTuners(tunerV);
319 model_print("Best tuners\n");
320 for (uint j = 0; j < tunerV->getSize(); j++) {
321 TunerRecord *tuner = tunerV->get(j);
323 sprintf(buffer, "tuner%u.conf", j);
324 tuner->getTuner()->serialize(buffer);
325 tuner->getTuner()->print();
330 void MultiTuner::improveTuners(Vector<TunerRecord *> *tunerV) {
331 for (uint j = 0; j < tunerV->getSize(); j++) {
332 TunerRecord *tuner = tunerV->get(j);
333 TunerRecord *newtuner = tune(tuner);
334 tunerV->set(j, newtuner);
338 double MultiTuner::evaluateAll(TunerRecord *tuner) {
340 for (uint i = 0; i < tuner->problems.getSize(); i++) {
341 Problem *problem = tuner->problems.get(i);
342 long long metric = tuner->getTime(problem);
344 metric = evaluate(problem, tuner);
346 tuner->setTime(problem, metric);
349 double score = metric;
352 return pow(product, 1 / ((double)tuner->problems.getSize()));
355 SearchTuner *MultiTuner::mutateTuner(SearchTuner *oldTuner, uint k) {
356 SearchTuner *newTuner = oldTuner->copyUsed();
357 uint numSettings = oldTuner->getSize();
358 uint settingsToMutate = (uint)(AUTOTUNERFACTOR * (((double)numSettings) * (budget - k)) / (budget));
359 if (settingsToMutate < 1)
360 settingsToMutate = 1;
361 model_print("Mutating %u settings\n", settingsToMutate);
362 while (settingsToMutate-- != 0) {
363 newTuner->randomMutate();
368 TunerRecord *MultiTuner::tune(TunerRecord *tuner) {
369 TunerRecord *bestTuner = NULL;
370 double bestScore = DBL_MAX;
372 TunerRecord *oldTuner = tuner;
373 double base_temperature = evaluateAll(oldTuner);
374 double oldScore = base_temperature;
376 for (uint i = 0; i < budget; i++) {
377 SearchTuner *tmpTuner = mutateTuner(oldTuner->getTuner(), i);
378 TunerRecord *newTuner = oldTuner->changeTuner(tmpTuner);
379 newTuner->tunernumber = allTuners.getSize();
380 allTuners.push(newTuner);
381 double newScore = evaluateAll(newTuner);
382 newTuner->tuner->printUsed();
383 model_print("Received score %f\n", newScore);
384 double scoreDiff = newScore - oldScore; //smaller is better
385 if (newScore < bestScore) {
386 bestScore = newScore;
387 bestTuner = newTuner;
394 double currTemp = base_temperature * (((double)budget - i) / budget);
395 acceptanceP = exp(-scoreDiff / currTemp);
397 double ran = ((double)random()) / RAND_MAX;
398 if (ran <= acceptanceP) {