1 #include "multituner.h"
3 #include "searchtuner.h"
14 Problem::Problem(const char *_problem) :
19 uint len = strlen(_problem);
20 problem = (char *) ourmalloc(len + 1);
21 memcpy(problem, _problem, len + 1);
28 void TunerRecord::setTime(Problem *problem, long long time) {
29 timetaken.put(problem, time);
32 void TunerRecord::print(){
33 model_print("*************TUNER NUMBER=%d***********\n", tunernumber);
35 model_print("&&&&&&&&&&&&&USED SETTINGS &&&&&&&&&&&&\n");
40 long long TunerRecord::getTime(Problem *problem) {
41 if (timetaken.contains(problem))
42 return timetaken.get(problem);
46 TunerRecord *TunerRecord::changeTuner(SearchTuner *_newtuner) {
47 TunerRecord *tr = new TunerRecord(_newtuner);
48 for (uint i = 0; i < problems.getSize(); i++) {
49 tr->problems.push(problems.get(i));
54 MultiTuner::MultiTuner(uint _budget, uint _rounds, uint _timeout) :
55 budget(_budget), rounds(_rounds), timeout(_timeout), execnum(0) {
58 MultiTuner::~MultiTuner() {
59 for (uint i = 0; i < problems.getSize(); i++)
60 ourfree(problems.get(i));
61 for (uint i = 0; i < allTuners.getSize(); i++)
62 delete allTuners.get(i);
65 void MultiTuner::addProblem(const char *filename) {
66 Problem *p = new Problem(filename);
67 p->problemnumber = problems.getSize();
71 void MultiTuner::printData() {
72 model_print("*********** DATA DUMP ***********\n");
73 for (uint i = 0; i < allTuners.getSize(); i++) {
74 TunerRecord *tuner = allTuners.get(i);
75 SearchTuner *stun = tuner->getTuner();
76 model_print("Tuner %u\n", i);
78 model_print("----------------------------------\n\n\n");
79 for (uint j = 0; j < tuner->problems.getSize(); j++) {
80 Problem *problem = tuner->problems.get(j);
81 model_print("Problem %s\n", problem->getProblem());
82 model_print("Time = %lld\n", tuner->getTime(problem));
87 void MultiTuner::findBestThreeTuners() {
88 if (allTuners.getSize() < 3) {
92 TunerRecord *bestTuners[3];
93 double score = DBL_MAX;
94 for (uint i = 0; i < allTuners.getSize() - 2; i++) {
95 for (uint j = i + 1; j < allTuners.getSize() - 1; j++) {
96 for (uint k = j + 1; k < allTuners.getSize(); k++) {
97 TunerRecord *tuner1 = allTuners.get(i);
98 TunerRecord *tuner2 = allTuners.get(j);
99 TunerRecord *tuner3 = allTuners.get(k);
100 double mintimes[problems.getSize()];
101 for (uint l = 0; l < problems.getSize(); l++) {
102 Problem *problem = problems.get(l);
103 mintimes[l] = pow(min(tuner1->getTime(problem), tuner2->getTime(problem), tuner3->getTime(problem)), (double)1 / problems.getSize());
106 for (uint l = 0; l < problems.getSize(); l++) {
107 result *= mintimes[l];
109 if (result < score) {
111 bestTuners[0] = tuner1;
112 bestTuners[1] = tuner2;
113 bestTuners[2] = tuner3;
118 model_print("Best 3 tuners:\n");
119 for (uint i = 0; i < 3; i++) {
120 TunerRecord *tuner = bestTuners[i];
121 SearchTuner *stun = tuner->getTuner();
123 snprintf(buffer, sizeof(buffer), "best%u.tuner", i);
124 stun->serialize(buffer);
125 model_print("Tuner %u\n", tuner->tunernumber);
127 for (uint j = 0; j < tuner->problems.getSize(); j++) {
128 Problem *problem = tuner->problems.get(j);
129 model_print("Problem %s\n", problem->getProblem());
130 model_print("Time = %lld\n", tuner->getTime(problem));
132 model_print("----------------------------------\n\n\n");
136 void MultiTuner::addTuner(SearchTuner *tuner) {
137 TunerRecord *t = new TunerRecord(tuner);
139 t->tunernumber = allTuners.getSize();
144 void MultiTuner::readData(uint numRuns) {
145 for (uint i = 0; i < numRuns; i++) {
149 snprintf(buffer, sizeof(buffer), "tunernum%u", i);
150 myfile.open (buffer, ios::in);
151 myfile >> tunernumber;
153 if (allTuners.getSize() <= tunernumber)
154 allTuners.setSize(tunernumber + 1);
155 if (allTuners.get(tunernumber) == NULL) {
156 snprintf(buffer, sizeof(buffer), "tuner%u", i);
157 allTuners.set(tunernumber, new TunerRecord(new SearchTuner(buffer), tunernumber));
159 //Add any new used records
160 snprintf(buffer, sizeof(buffer), "tuner%uused", i);
161 TunerRecord *tuner = allTuners.get(tunernumber);
162 tuner->getTuner()->addUsed(buffer);
164 char problemname[512];
166 snprintf(buffer, sizeof(buffer), "problem%u", i);
167 myfile.open(buffer, ios::in);
168 myfile.getline(problemname, sizeof(problemname));
169 myfile >> problemnumber;
171 if (problems.getSize() <= problemnumber)
172 problems.setSize(problemnumber + 1);
173 if (problems.get(problemnumber) == NULL)
174 problems.set(problemnumber, new Problem(problemname));
175 Problem *problem = problems.get(problemnumber);
176 long long metric = -1;
177 int sat = IS_INDETER;
178 //Read data in from results file
179 snprintf(buffer, sizeof(buffer), "result%u", i);
181 myfile.open (buffer, ios::in);
184 if (myfile.is_open()) {
189 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
190 problem->result = sat;
191 } else if (problem->result != sat && sat != IS_INDETER) {
192 model_print("******** Result has changed ********\n");
196 if (tuner->getTime(problem) == -1)
197 tuner->problems.push(problem);
198 tuner->setTime(problem, metric);
205 long long MultiTuner::evaluate(Problem *problem, TunerRecord *tuner) {
208 snprintf(buffer, sizeof(buffer), "problem%u", execnum);
211 myfile.open (buffer, ios::out);
214 if (myfile.is_open()) {
215 myfile << problem->getProblem() << endl;
216 myfile << problem->problemnumber << endl;
222 snprintf(buffer, sizeof(buffer), "tunernum%u", execnum);
225 myfile.open (buffer, ios::out);
228 if (myfile.is_open()) {
229 myfile << tuner->tunernumber << endl;
234 //Write out the tuner
235 snprintf(buffer, sizeof(buffer), "tuner%u", execnum);
236 tuner->getTuner()->serialize(buffer);
239 uint timeinsecs = problem->besttime / NANOSEC;
240 uint adaptive = (timeinsecs > 30) ? timeinsecs * 5 : 150;
241 uint maxtime = (adaptive < timeout) ? adaptive : timeout;
244 snprintf(buffer, sizeof(buffer), "./run.sh deserializerun %s %u tuner%u result%u > log%u", problem->getProblem(), maxtime, execnum, execnum, execnum);
245 int status = system(buffer);
247 long long metric = -1;
248 int sat = IS_INDETER;
251 //Read data in from results file
252 snprintf(buffer, sizeof(buffer), "result%u", execnum);
255 myfile.open (buffer, ios::in);
258 if (myfile.is_open()) {
263 updateTimeout(problem, metric);
264 snprintf(buffer, sizeof(buffer), "tuner%uused", execnum);
265 tuner->getTuner()->addUsed(buffer);
266 explored.push(tuner);
268 //Increment execution count
271 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
272 problem->result = sat;
273 } else if (problem->result != sat && sat != IS_INDETER) {
274 model_print("******** Result has changed ********\n");
276 if (sat == IS_INDETER && metric != -1) {//The case when we have a timeout
282 void MultiTuner::updateTimeout(Problem *problem, long long metric) {
283 if (metric < problem->besttime) {
284 problem->besttime = metric;
288 void MultiTuner::tuneComp() {
289 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
290 for (uint b = 0; b < budget; b++) {
291 model_print("Round %u of %u\n", b, budget);
292 uint tSize = tunerV->getSize();
293 for (uint i = 0; i < tSize; i++) {
294 SearchTuner *tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
295 TunerRecord *tmp = new TunerRecord(tmpTuner);
296 tmp->tunernumber = allTuners.getSize();
297 model_print("Mutated tuner %u to generate tuner %u\n", tunerV->get(i)->tunernumber, tmp->tunernumber);
302 Hashtable<TunerRecord *, int, uint64_t> scores;
303 for (uint i = 0; i < problems.getSize(); i++) {
304 Problem *problem = problems.get(i);
305 Vector<TunerRecord *> places;
306 for (uint j = 0; j < tunerV->getSize(); j++) {
307 TunerRecord *tuner = tunerV->get(j);
308 long long metric = tuner->getTime(problem);
310 metric = evaluate(problem, tuner);
311 if (tuner->getTime(problem) == -1) {
312 tuner->problems.push(problem);
314 model_print("%u.Problem<%s>\tTuner<%p, %d>\tMetric<%lld>\n", i, problem->problem,tuner, tuner->tunernumber, metric);
315 model_print("*****************************\n");
317 tuner->setTime(problem, metric);
319 tuner->setTime(problem, -2);
323 for (; k < places.getSize(); k++) {
324 if (metric < places.get(k)->getTime(problem))
327 model_print("place[%u]=Tuner<%p,%d>\n", k, tuner, tuner->tunernumber);
328 places.insertAt(k, tuner);
332 for (uint k = 0; k < places.getSize() && points; k++) {
333 TunerRecord *tuner = places.get(k);
335 if (scores.contains(tuner))
336 currScore = scores.get(tuner);
338 model_print("Problem<%s>\tTuner<%p,%d>\tmetric<%d>\n", problem->problem, tuner, tuner->tunernumber, currScore);
339 model_print("**************************\n");
340 scores.put(tuner, currScore);
344 Vector<TunerRecord *> ranking;
345 for (uint i = 0; i < tunerV->getSize(); i++) {
346 TunerRecord *tuner = tunerV->get(i);
348 if (scores.contains(tuner))
349 score = scores.get(tuner);
351 for (; j < ranking.getSize(); j++) {
352 TunerRecord *t = ranking.get(j);
354 if (scores.contains(t))
355 tscore = scores.get(t);
359 model_print("ranking[%u]=tuner<%p,%u>(Score=%d)\n", j, tuner, tuner->tunernumber, score);
360 model_print("************************\n");
361 ranking.insertAt(j, tuner);
363 model_print("tunerSize=%u\trankingSize=%u\ttunerVSize=%u\n", tuners.getSize(), ranking.getSize(), tunerV->getSize());
364 for (uint i = tuners.getSize(); i < ranking.getSize(); i++) {
365 TunerRecord *tuner = ranking.get(i);
366 model_print("Removing tuner %u\n", tuner->tunernumber);
367 for (uint j = 0; j < tunerV->getSize(); j++) {
368 if (tunerV->get(j) == tuner)
376 void MultiTuner::mapProblemsToTuners(Vector<TunerRecord *> *tunerV) {
377 for (uint i = 0; i < problems.getSize(); i++) {
378 Problem *problem = problems.get(i);
379 TunerRecord *bestTuner = NULL;
380 long long bestscore = 0;
381 for (uint j = 0; j < tunerV->getSize(); j++) {
382 TunerRecord *tuner = tunerV->get(j);
383 long long metric = tuner->getTime(problem);
385 metric = evaluate(problem, tuner);
387 tuner->setTime(problem, metric);
389 tuner->setTime(problem, -2);
391 if ((bestTuner == NULL && metric >= 0) ||
392 (metric < bestscore && metric >= 0)) {
397 if (bestTuner != NULL)
398 bestTuner->problems.push(problem);
402 void clearVector(Vector<TunerRecord *> *tunerV) {
403 for (uint j = 0; j < tunerV->getSize(); j++) {
404 TunerRecord *tuner = tunerV->get(j);
405 tuner->problems.clear();
409 void MultiTuner::tuneK() {
410 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
411 for (uint i = 0; i < rounds; i++) {
413 mapProblemsToTuners(tunerV);
414 improveTuners(tunerV);
416 model_print("Best tuners\n");
417 for (uint j = 0; j < tunerV->getSize(); j++) {
418 TunerRecord *tuner = tunerV->get(j);
420 sprintf(buffer, "tuner%u.conf", j);
421 tuner->getTuner()->serialize(buffer);
422 tuner->getTuner()->print();
427 void MultiTuner::improveTuners(Vector<TunerRecord *> *tunerV) {
428 for (uint j = 0; j < tunerV->getSize(); j++) {
429 TunerRecord *tuner = tunerV->get(j);
430 TunerRecord *newtuner = tune(tuner);
431 tunerV->set(j, newtuner);
435 double MultiTuner::evaluateAll(TunerRecord *tuner) {
437 for (uint i = 0; i < tuner->problems.getSize(); i++) {
438 Problem *problem = tuner->problems.get(i);
439 long long metric = tuner->getTime(problem);
441 metric = evaluate(problem, tuner);
443 tuner->setTime(problem, metric);
445 tuner->setTime(problem, -2);
448 double score = metric;
453 return pow(product, 1 / ((double)tuner->problems.getSize()));
456 SearchTuner *MultiTuner::mutateTuner(SearchTuner *oldTuner, uint k) {
457 SearchTuner *newTuner = oldTuner->copyUsed();
458 uint numSettings = oldTuner->getSize();
459 uint settingsToMutate = (uint)(AUTOTUNERFACTOR * (((double)numSettings) * (budget - k)) / (budget));
460 if (settingsToMutate < 1)
461 settingsToMutate = 1;
462 model_print("Mutating %u settings\n", settingsToMutate);
463 while (settingsToMutate-- != 0) {
464 newTuner->randomMutate();
465 if(hasExplored(newTuner)){
466 model_print("Note:A repetitive tuner has found\n");
473 bool MultiTuner::hasExplored(SearchTuner *newTuner){
474 for (uint i=0; i< explored.getSize(); i++){
475 SearchTuner *tuner = explored.get(i)->getTuner();
476 if(tuner->isSubTunerof(newTuner)){
483 TunerRecord *MultiTuner::tune(TunerRecord *tuner) {
484 TunerRecord *bestTuner = NULL;
485 double bestScore = DBL_MAX;
487 TunerRecord *oldTuner = tuner;
488 double base_temperature = evaluateAll(oldTuner);
489 double oldScore = base_temperature;
491 for (uint i = 0; i < budget; i++) {
492 SearchTuner *tmpTuner = mutateTuner(oldTuner->getTuner(), i);
493 TunerRecord *newTuner = oldTuner->changeTuner(tmpTuner);
494 newTuner->tunernumber = allTuners.getSize();
495 allTuners.push(newTuner);
496 double newScore = evaluateAll(newTuner);
497 newTuner->tuner->printUsed();
498 model_print("Received score %f\n", newScore);
499 double scoreDiff = newScore - oldScore; //smaller is better
500 if (newScore < bestScore) {
501 bestScore = newScore;
502 bestTuner = newTuner;
509 double currTemp = base_temperature * (((double)budget - i) / budget);
510 acceptanceP = exp(-scoreDiff / currTemp);
512 double ran = ((double)random()) / RAND_MAX;
513 if (ran <= acceptanceP) {