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 bool MultiTuner::finishTunerExist(TunerRecord *tunerRec){
137 SearchTuner *tuner = tunerRec->getTuner();
138 for(uint i=0; i< explored.getSize(); i++){
139 if(explored.get(i)->getTuner()->equalUsed(tuner))
145 void MultiTuner::addTuner(SearchTuner *tuner) {
146 TunerRecord *t = new TunerRecord(tuner);
148 t->tunernumber = allTuners.getSize();
153 void MultiTuner::readData(uint numRuns) {
154 for (uint i = 0; i < numRuns; i++) {
158 snprintf(buffer, sizeof(buffer), "tunernum%u", i);
159 myfile.open (buffer, ios::in);
160 myfile >> tunernumber;
162 if (allTuners.getSize() <= tunernumber)
163 allTuners.setSize(tunernumber + 1);
164 if (allTuners.get(tunernumber) == NULL) {
165 snprintf(buffer, sizeof(buffer), "tuner%u", i);
166 allTuners.set(tunernumber, new TunerRecord(new SearchTuner(buffer), tunernumber));
168 //Add any new used records
169 snprintf(buffer, sizeof(buffer), "tuner%uused", i);
170 TunerRecord *tuner = allTuners.get(tunernumber);
171 tuner->getTuner()->addUsed(buffer);
173 char problemname[512];
175 snprintf(buffer, sizeof(buffer), "problem%u", i);
176 myfile.open(buffer, ios::in);
177 myfile.getline(problemname, sizeof(problemname));
178 myfile >> problemnumber;
180 if (problems.getSize() <= problemnumber)
181 problems.setSize(problemnumber + 1);
182 if (problems.get(problemnumber) == NULL)
183 problems.set(problemnumber, new Problem(problemname));
184 Problem *problem = problems.get(problemnumber);
185 long long metric = -1;
186 int sat = IS_INDETER;
187 //Read data in from results file
188 snprintf(buffer, sizeof(buffer), "result%u", i);
190 myfile.open (buffer, ios::in);
193 if (myfile.is_open()) {
198 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
199 problem->result = sat;
200 } else if (problem->result != sat && sat != IS_INDETER) {
201 model_print("******** Result has changed ********\n");
205 if (tuner->getTime(problem) == -1)
206 tuner->problems.push(problem);
207 tuner->setTime(problem, metric);
214 long long MultiTuner::evaluate(Problem *problem, TunerRecord *tuner) {
217 snprintf(buffer, sizeof(buffer), "problem%u", execnum);
220 myfile.open (buffer, ios::out);
223 if (myfile.is_open()) {
224 myfile << problem->getProblem() << endl;
225 myfile << problem->problemnumber << endl;
231 snprintf(buffer, sizeof(buffer), "tunernum%u", execnum);
234 myfile.open (buffer, ios::out);
237 if (myfile.is_open()) {
238 myfile << tuner->tunernumber << endl;
243 //Write out the tuner
244 snprintf(buffer, sizeof(buffer), "tuner%u", execnum);
245 tuner->getTuner()->serialize(buffer);
248 uint timeinsecs = problem->besttime / NANOSEC;
249 uint adaptive = (timeinsecs > 30) ? timeinsecs * 5 : 150;
250 uint maxtime = (adaptive < timeout) ? adaptive : timeout;
253 snprintf(buffer, sizeof(buffer), "./run.sh deserializerun %s %u tuner%u result%u > log%u", problem->getProblem(), maxtime, execnum, execnum, execnum);
254 int status = system(buffer);
256 long long metric = -1;
257 int sat = IS_INDETER;
260 //Read data in from results file
261 snprintf(buffer, sizeof(buffer), "result%u", execnum);
264 myfile.open (buffer, ios::in);
267 if (myfile.is_open()) {
272 updateTimeout(problem, metric);
273 snprintf(buffer, sizeof(buffer), "tuner%uused", execnum);
274 tuner->getTuner()->addUsed(buffer);
275 if(!finishTunerExist(tuner)){
276 explored.push(tuner);
279 //Increment execution count
282 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
283 problem->result = sat;
284 } else if (problem->result != sat && sat != IS_INDETER) {
285 model_print("******** Result has changed ********\n");
287 if (sat == IS_INDETER && metric != -1) {//The case when we have a timeout
293 void MultiTuner::updateTimeout(Problem *problem, long long metric) {
294 if (metric < problem->besttime) {
295 problem->besttime = metric;
299 void MultiTuner::tuneComp() {
300 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
301 for (uint b = 0; b < budget; b++) {
302 model_print("Round %u of %u\n", b, budget);
303 uint tSize = tunerV->getSize();
304 for (uint i = 0; i < tSize; i++) {
305 SearchTuner *tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
306 TunerRecord *tmp = new TunerRecord(tmpTuner);
307 tmp->tunernumber = allTuners.getSize();
308 model_print("Mutated tuner %u to generate tuner %u\n", tunerV->get(i)->tunernumber, tmp->tunernumber);
313 Hashtable<TunerRecord *, int, uint64_t> scores;
314 for (uint i = 0; i < problems.getSize(); i++) {
315 Problem *problem = problems.get(i);
316 Vector<TunerRecord *> places;
317 for (uint j = 0; j < tunerV->getSize(); j++) {
318 TunerRecord *tuner = tunerV->get(j);
319 long long metric = tuner->getTime(problem);
321 metric = evaluate(problem, tuner);
322 if (tuner->getTime(problem) == -1) {
323 tuner->problems.push(problem);
325 model_print("%u.Problem<%s>\tTuner<%p, %d>\tMetric<%lld>\n", i, problem->problem,tuner, tuner->tunernumber, metric);
326 model_print("*****************************\n");
328 tuner->setTime(problem, metric);
330 tuner->setTime(problem, -2);
334 for (; k < places.getSize(); k++) {
335 if (metric < places.get(k)->getTime(problem))
338 model_print("place[%u]=Tuner<%p,%d>\n", k, tuner, tuner->tunernumber);
339 places.insertAt(k, tuner);
343 for (uint k = 0; k < places.getSize() && points; k++) {
344 TunerRecord *tuner = places.get(k);
346 if (scores.contains(tuner))
347 currScore = scores.get(tuner);
349 model_print("Problem<%s>\tTuner<%p,%d>\tmetric<%d>\n", problem->problem, tuner, tuner->tunernumber, currScore);
350 model_print("**************************\n");
351 scores.put(tuner, currScore);
355 Vector<TunerRecord *> ranking;
356 for (uint i = 0; i < tunerV->getSize(); i++) {
357 TunerRecord *tuner = tunerV->get(i);
359 if (scores.contains(tuner))
360 score = scores.get(tuner);
362 for (; j < ranking.getSize(); j++) {
363 TunerRecord *t = ranking.get(j);
365 if (scores.contains(t))
366 tscore = scores.get(t);
370 model_print("ranking[%u]=tuner<%p,%u>(Score=%d)\n", j, tuner, tuner->tunernumber, score);
371 model_print("************************\n");
372 ranking.insertAt(j, tuner);
374 model_print("tunerSize=%u\trankingSize=%u\ttunerVSize=%u\n", tuners.getSize(), ranking.getSize(), tunerV->getSize());
375 for (uint i = tuners.getSize(); i < ranking.getSize(); i++) {
376 TunerRecord *tuner = ranking.get(i);
377 model_print("Removing tuner %u\n", tuner->tunernumber);
378 for (uint j = 0; j < tunerV->getSize(); j++) {
379 if (tunerV->get(j) == tuner)
387 void MultiTuner::mapProblemsToTuners(Vector<TunerRecord *> *tunerV) {
388 for (uint i = 0; i < problems.getSize(); i++) {
389 Problem *problem = problems.get(i);
390 TunerRecord *bestTuner = NULL;
391 long long bestscore = 0;
392 for (uint j = 0; j < tunerV->getSize(); j++) {
393 TunerRecord *tuner = tunerV->get(j);
394 long long metric = tuner->getTime(problem);
396 metric = evaluate(problem, tuner);
398 tuner->setTime(problem, metric);
400 tuner->setTime(problem, -2);
402 if ((bestTuner == NULL && metric >= 0) ||
403 (metric < bestscore && metric >= 0)) {
408 if (bestTuner != NULL)
409 bestTuner->problems.push(problem);
413 void clearVector(Vector<TunerRecord *> *tunerV) {
414 for (uint j = 0; j < tunerV->getSize(); j++) {
415 TunerRecord *tuner = tunerV->get(j);
416 tuner->problems.clear();
420 void MultiTuner::tuneK() {
421 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
422 for (uint i = 0; i < rounds; i++) {
424 mapProblemsToTuners(tunerV);
425 improveTuners(tunerV);
427 model_print("Best tuners\n");
428 for (uint j = 0; j < tunerV->getSize(); j++) {
429 TunerRecord *tuner = tunerV->get(j);
431 sprintf(buffer, "tuner%u.conf", j);
432 tuner->getTuner()->serialize(buffer);
433 tuner->getTuner()->print();
438 void MultiTuner::improveTuners(Vector<TunerRecord *> *tunerV) {
439 for (uint j = 0; j < tunerV->getSize(); j++) {
440 TunerRecord *tuner = tunerV->get(j);
441 TunerRecord *newtuner = tune(tuner);
442 tunerV->set(j, newtuner);
446 double MultiTuner::evaluateAll(TunerRecord *tuner) {
448 for (uint i = 0; i < tuner->problems.getSize(); i++) {
449 Problem *problem = tuner->problems.get(i);
450 long long metric = tuner->getTime(problem);
452 metric = evaluate(problem, tuner);
454 tuner->setTime(problem, metric);
456 tuner->setTime(problem, -2);
459 double score = metric;
464 return pow(product, 1 / ((double)tuner->problems.getSize()));
467 SearchTuner *MultiTuner::mutateTuner(SearchTuner *oldTuner, uint k) {
468 SearchTuner *newTuner = oldTuner->copyUsed();
469 uint numSettings = oldTuner->getSize();
470 uint settingsToMutate = (uint)(AUTOTUNERFACTOR * (((double)numSettings) * (budget - k)) / (budget));
471 if (settingsToMutate < 1)
472 settingsToMutate = 1;
473 model_print("Mutating %u settings\n", settingsToMutate);
474 while (settingsToMutate-- != 0) {
475 newTuner->randomMutate();
476 if(hasExplored(newTuner)){
477 model_print("Note:A repetitive tuner has found\n");
484 bool MultiTuner::hasExplored(SearchTuner *newTuner){
485 for (uint i=0; i< explored.getSize(); i++){
486 SearchTuner *tuner = explored.get(i)->getTuner();
487 if(tuner->isSubTunerof(newTuner)){
494 TunerRecord *MultiTuner::tune(TunerRecord *tuner) {
495 TunerRecord *bestTuner = NULL;
496 double bestScore = DBL_MAX;
498 TunerRecord *oldTuner = tuner;
499 double base_temperature = evaluateAll(oldTuner);
500 double oldScore = base_temperature;
502 for (uint i = 0; i < budget; i++) {
503 SearchTuner *tmpTuner = mutateTuner(oldTuner->getTuner(), i);
504 TunerRecord *newTuner = oldTuner->changeTuner(tmpTuner);
505 newTuner->tunernumber = allTuners.getSize();
506 allTuners.push(newTuner);
507 double newScore = evaluateAll(newTuner);
508 newTuner->tuner->printUsed();
509 model_print("Received score %f\n", newScore);
510 double scoreDiff = newScore - oldScore; //smaller is better
511 if (newScore < bestScore) {
512 bestScore = newScore;
513 bestTuner = newTuner;
520 double currTemp = base_temperature * (((double)budget - i) / budget);
521 acceptanceP = exp(-scoreDiff / currTemp);
523 double ran = ((double)random()) / RAND_MAX;
524 if (ran <= acceptanceP) {