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 long long TunerRecord::getTime(Problem *problem) {
33 if (timetaken.contains(problem))
34 return timetaken.get(problem);
38 TunerRecord *TunerRecord::changeTuner(SearchTuner *_newtuner) {
39 TunerRecord *tr = new TunerRecord(_newtuner);
40 for (uint i = 0; i < problems.getSize(); i++) {
41 tr->problems.push(problems.get(i));
46 MultiTuner::MultiTuner(uint _budget, uint _rounds, uint _timeout) :
47 budget(_budget), rounds(_rounds), timeout(_timeout), execnum(0) {
50 MultiTuner::~MultiTuner() {
51 for (uint i = 0; i < problems.getSize(); i++)
52 ourfree(problems.get(i));
53 for (uint i = 0; i < allTuners.getSize(); i++)
54 delete allTuners.get(i);
57 void MultiTuner::addProblem(const char *filename) {
58 Problem *p = new Problem(filename);
59 p->problemnumber = problems.getSize();
63 void MultiTuner::printData() {
64 model_print("*********** DATA DUMP ***********\n");
65 for (uint i = 0; i < allTuners.getSize(); i++) {
66 TunerRecord *tuner = allTuners.get(i);
67 SearchTuner *stun = tuner->getTuner();
68 model_print("Tuner %u\n", i);
70 model_print("----------------------------------\n\n\n");
71 for (uint j = 0; j < tuner->problems.getSize(); j++) {
72 Problem *problem = tuner->problems.get(j);
73 model_print("Problem %s\n", problem->getProblem());
74 model_print("Time = %lld\n", tuner->getTime(problem));
79 void MultiTuner::addTuner(SearchTuner *tuner) {
80 TunerRecord *t = new TunerRecord(tuner);
82 t->tunernumber = allTuners.getSize();
87 void MultiTuner::readData(uint numRuns) {
88 for (uint i = 0; i < numRuns; i++) {
92 snprintf(buffer, sizeof(buffer), "tunernum%u", i);
93 myfile.open (buffer, ios::in);
94 myfile >> tunernumber;
96 if (allTuners.getSize() <= tunernumber)
97 allTuners.setSize(tunernumber + 1);
98 if (allTuners.get(tunernumber) == NULL) {
99 snprintf(buffer, sizeof(buffer), "tuner%u", i);
100 allTuners.set(tunernumber, new TunerRecord(new SearchTuner(buffer)));
102 //Add any new used records
103 snprintf(buffer, sizeof(buffer), "tuner%uused", i);
104 TunerRecord *tuner = allTuners.get(tunernumber);
105 tuner->getTuner()->addUsed(buffer);
107 char problemname[512];
109 snprintf(buffer, sizeof(buffer), "problem%u", i);
110 myfile.open(buffer, ios::in);
111 myfile.getline(problemname, sizeof(problemname));
112 myfile >> problemnumber;
114 if (problems.getSize() <= problemnumber)
115 problems.setSize(problemnumber + 1);
116 if (problems.get(problemnumber) == NULL)
117 problems.set(problemnumber, new Problem(problemname));
118 Problem *problem = problems.get(problemnumber);
119 long long metric = -1;
120 int sat = IS_INDETER;
121 //Read data in from results file
122 snprintf(buffer, sizeof(buffer), "result%u", i);
124 myfile.open (buffer, ios::in);
127 if (myfile.is_open()) {
132 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
133 problem->result = sat;
134 } else if (problem->result != sat && sat != IS_INDETER) {
135 model_print("******** Result has changed ********\n");
139 if (tuner->getTime(problem) == -1)
140 tuner->problems.push(problem);
141 tuner->setTime(problem, metric);
148 long long MultiTuner::evaluate(Problem *problem, TunerRecord *tuner) {
151 snprintf(buffer, sizeof(buffer), "problem%u", execnum);
154 myfile.open (buffer, ios::out);
157 if (myfile.is_open()) {
158 myfile << problem->getProblem() << endl;
159 myfile << problem->problemnumber << endl;
165 snprintf(buffer, sizeof(buffer), "tunernum%u", execnum);
168 myfile.open (buffer, ios::out);
171 if (myfile.is_open()) {
172 myfile << tuner->tunernumber << endl;
177 //Write out the tuner
178 snprintf(buffer, sizeof(buffer), "tuner%u", execnum);
179 tuner->getTuner()->serialize(buffer);
182 uint timeinsecs = problem->besttime / NANOSEC;
183 uint adaptive = (timeinsecs > 30) ? timeinsecs * 5 : 150;
184 uint maxtime = (adaptive < timeout) ? adaptive : timeout;
187 snprintf(buffer, sizeof(buffer), "./run.sh deserializerun %s %u tuner%u result%u > log%u", problem->getProblem(), maxtime, execnum, execnum, execnum);
188 int status = system(buffer);
190 long long metric = -1;
191 int sat = IS_INDETER;
194 //Read data in from results file
195 snprintf(buffer, sizeof(buffer), "result%u", execnum);
198 myfile.open (buffer, ios::in);
201 if (myfile.is_open()) {
206 updateTimeout(problem, metric);
207 snprintf(buffer, sizeof(buffer), "tuner%uused", execnum);
208 tuner->getTuner()->addUsed(buffer);
210 //Increment execution count
213 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
214 problem->result = sat;
215 } else if (problem->result != sat && sat != IS_INDETER) {
216 model_print("******** Result has changed ********\n");
218 if (sat == IS_INDETER && metric != -1) {//The case when we have a timeout
224 void MultiTuner::updateTimeout(Problem *problem, long long metric) {
225 if (metric < problem->besttime) {
226 problem->besttime = metric;
230 void MultiTuner::tuneComp() {
231 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
232 for (uint b = 0; b < budget; b++) {
233 model_print("Round %u of %u\n", b, budget);
234 uint tSize = tunerV->getSize();
235 for (uint i = 0; i < tSize; i++) {
236 SearchTuner *tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
237 TunerRecord *tmp = new TunerRecord(tmpTuner);
238 tmp->tunernumber = allTuners.getSize();
239 model_print("Mutated tuner %u to generate tuner %u\n", tunerV->get(i)->tunernumber, tmp->tunernumber);
244 Hashtable<TunerRecord *, int, uint64_t> scores;
245 for (uint i = 0; i < problems.getSize(); i++) {
246 Problem *problem = problems.get(i);
247 Vector<TunerRecord *> places;
248 for (uint j = 0; j < tunerV->getSize(); j++) {
249 TunerRecord *tuner = tunerV->get(j);
250 long long metric = tuner->getTime(problem);
252 metric = evaluate(problem, tuner);
253 if (tuner->getTime(problem) == -1) {
254 tuner->problems.push(problem);
256 LOG("%u.Problem<%s>\tTuner<%p, %d>\tMetric<%lld>\n", i, problem->problem,tuner, tuner->tunernumber, metric);
257 LOG("*****************************\n");
259 tuner->setTime(problem, metric);
263 for (; k < places.getSize(); k++) {
264 if (metric < places.get(k)->getTime(problem))
267 LOG("place[%u]=Tuner<%p,%d>\n", k, tuner, tuner->tunernumber);
268 places.insertAt(k, tuner);
272 for (uint k = 0; k < places.getSize() && points; k++) {
273 TunerRecord *tuner = places.get(k);
275 if (scores.contains(tuner))
276 currScore = scores.get(tuner);
278 LOG("Problem<%s>\tTuner<%p,%d>\tmetric<%d>\n", problem->problem, tuner, tuner->tunernumber, currScore);
279 LOG("**************************\n");
280 scores.put(tuner, currScore);
284 Vector<TunerRecord *> ranking;
285 for (uint i = 0; i < tunerV->getSize(); i++) {
286 TunerRecord *tuner = tunerV->get(i);
288 if (scores.contains(tuner))
289 score = scores.get(tuner);
291 for (; j < ranking.getSize(); j++) {
292 TunerRecord *t = ranking.get(j);
294 if (scores.contains(t))
295 tscore = scores.get(t);
299 LOG("ranking[%u]=tuner<%p,%u>(Score=%d)\n", j, tuner, tuner->tunernumber, score);
300 LOG("************************\n");
301 ranking.insertAt(j, tuner);
303 LOG("tunerSize=%u\trankingSize=%u\ttunerVSize=%u\n", tuners.getSize(), ranking.getSize(), tunerV->getSize());
304 for (uint i = tuners.getSize(); i < ranking.getSize(); i++) {
305 TunerRecord *tuner = ranking.get(i);
306 LOG("Removing tuner %u\n", tuner->tunernumber);
307 for (uint j = 0; j < tunerV->getSize(); j++) {
308 if (tunerV->get(j) == tuner)
316 void MultiTuner::mapProblemsToTuners(Vector<TunerRecord *> *tunerV) {
317 for (uint i = 0; i < problems.getSize(); i++) {
318 Problem *problem = problems.get(i);
319 TunerRecord *bestTuner = NULL;
320 long long bestscore = 0;
321 for (uint j = 0; j < tunerV->getSize(); j++) {
322 TunerRecord *tuner = tunerV->get(j);
323 long long metric = tuner->getTime(problem);
325 metric = evaluate(problem, tuner);
327 tuner->setTime(problem, metric);
329 if ((bestTuner == NULL && metric != -1) ||
330 (metric < bestscore && metric != -1)) {
335 if (bestTuner != NULL)
336 bestTuner->problems.push(problem);
340 void clearVector(Vector<TunerRecord *> *tunerV) {
341 for (uint j = 0; j < tunerV->getSize(); j++) {
342 TunerRecord *tuner = tunerV->get(j);
343 tuner->problems.clear();
347 void MultiTuner::tuneK() {
348 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
349 for (uint i = 0; i < rounds; i++) {
351 mapProblemsToTuners(tunerV);
352 improveTuners(tunerV);
354 model_print("Best tuners\n");
355 for (uint j = 0; j < tunerV->getSize(); j++) {
356 TunerRecord *tuner = tunerV->get(j);
358 sprintf(buffer, "tuner%u.conf", j);
359 tuner->getTuner()->serialize(buffer);
360 tuner->getTuner()->print();
365 void MultiTuner::improveTuners(Vector<TunerRecord *> *tunerV) {
366 for (uint j = 0; j < tunerV->getSize(); j++) {
367 TunerRecord *tuner = tunerV->get(j);
368 TunerRecord *newtuner = tune(tuner);
369 tunerV->set(j, newtuner);
373 double MultiTuner::evaluateAll(TunerRecord *tuner) {
375 for (uint i = 0; i < tuner->problems.getSize(); i++) {
376 Problem *problem = tuner->problems.get(i);
377 long long metric = tuner->getTime(problem);
379 metric = evaluate(problem, tuner);
381 tuner->setTime(problem, metric);
384 double score = metric;
387 return pow(product, 1 / ((double)tuner->problems.getSize()));
390 SearchTuner *MultiTuner::mutateTuner(SearchTuner *oldTuner, uint k) {
391 SearchTuner *newTuner = oldTuner->copyUsed();
392 uint numSettings = oldTuner->getSize();
393 uint settingsToMutate = (uint)(AUTOTUNERFACTOR * (((double)numSettings) * (budget - k)) / (budget));
394 if (settingsToMutate < 1)
395 settingsToMutate = 1;
396 model_print("Mutating %u settings\n", settingsToMutate);
397 while (settingsToMutate-- != 0) {
398 newTuner->randomMutate();
403 TunerRecord *MultiTuner::tune(TunerRecord *tuner) {
404 TunerRecord *bestTuner = NULL;
405 double bestScore = DBL_MAX;
407 TunerRecord *oldTuner = tuner;
408 double base_temperature = evaluateAll(oldTuner);
409 double oldScore = base_temperature;
411 for (uint i = 0; i < budget; i++) {
412 SearchTuner *tmpTuner = mutateTuner(oldTuner->getTuner(), i);
413 TunerRecord *newTuner = oldTuner->changeTuner(tmpTuner);
414 newTuner->tunernumber = allTuners.getSize();
415 allTuners.push(newTuner);
416 double newScore = evaluateAll(newTuner);
417 newTuner->tuner->printUsed();
418 model_print("Received score %f\n", newScore);
419 double scoreDiff = newScore - oldScore; //smaller is better
420 if (newScore < bestScore) {
421 bestScore = newScore;
422 bestTuner = newTuner;
429 double currTemp = base_temperature * (((double)budget - i) / budget);
430 acceptanceP = exp(-scoreDiff / currTemp);
432 double ran = ((double)random()) / RAND_MAX;
433 if (ran <= acceptanceP) {