1 #include "multituner.h"
3 #include "searchtuner.h"
14 Problem::Problem(const char *_problem, uint _timeout) :
17 besttime(std::numeric_limits<double>::infinity()),
20 uint len = strlen(_problem);
21 problem = (char *) ourmalloc(len + 1);
22 memcpy(problem, _problem, len + 1);
29 void TunerRecord::setTime(Problem *problem, long long time) {
30 timetaken.put(problem, time);
33 long long TunerRecord::getTime(Problem *problem) {
34 if (timetaken.contains(problem))
35 return timetaken.get(problem);
39 TunerRecord *TunerRecord::changeTuner(SearchTuner *_newtuner) {
40 TunerRecord *tr = new TunerRecord(_newtuner);
41 for (uint i = 0; i < problems.getSize(); i++) {
42 tr->problems.push(problems.get(i));
47 MultiTuner::MultiTuner(uint _budget, uint _rounds, uint _timeout) :
48 budget(_budget), rounds(_rounds), timeout(_timeout), execnum(0) {
51 MultiTuner::~MultiTuner() {
52 for (uint i = 0; i < problems.getSize(); i++)
53 ourfree(problems.get(i));
54 for (uint i = 0; i < allTuners.getSize(); i++)
55 delete allTuners.get(i);
58 void MultiTuner::addProblem(const char *filename) {
59 Problem *p = new Problem(filename, timeout);
60 p->problemnumber = problems.getSize();
64 void MultiTuner::printData() {
65 model_print("*********** DATA DUMP ***********\n");
66 for (uint i = 0; i < allTuners.getSize(); i++) {
67 TunerRecord *tuner = allTuners.get(i);
68 SearchTuner *stun = tuner->getTuner();
69 model_print("Tuner %u\n", i);
71 model_print("----------------------------------\n\n\n");
72 for (uint j = 0; j < tuner->problems.getSize(); j++) {
73 Problem *problem = tuner->problems.get(j);
74 model_print("Problem %s\n", problem->getProblem());
75 model_print("Time = %lld\n", tuner->getTime(problem));
80 void MultiTuner::addTuner(SearchTuner *tuner) {
81 TunerRecord *t = new TunerRecord(tuner);
83 t->tunernumber = allTuners.getSize();
88 void MultiTuner::readData(uint numRuns) {
89 for (uint i = 0; i < numRuns; i++) {
93 snprintf(buffer, sizeof(buffer), "tunernum%u", i);
94 myfile.open (buffer, ios::in);
95 myfile >> tunernumber;
97 if (allTuners.getSize() <= tunernumber)
98 allTuners.setSize(tunernumber + 1);
99 if (allTuners.get(tunernumber) == NULL) {
100 snprintf(buffer, sizeof(buffer), "tuner%u", i);
101 allTuners.set(tunernumber, new TunerRecord(new SearchTuner(buffer)));
103 //Add any new used records
104 snprintf(buffer, sizeof(buffer), "tuner%uused", i);
105 TunerRecord *tuner = allTuners.get(tunernumber);
106 tuner->getTuner()->addUsed(buffer);
108 char problemname[512];
110 snprintf(buffer, sizeof(buffer), "problem%u", i);
111 myfile.open(buffer, ios::in);
112 myfile.getline(problemname, sizeof(problemname));
113 myfile >> problemnumber;
115 if (problems.getSize() <= problemnumber)
116 problems.setSize(problemnumber + 1);
117 if (problems.get(problemnumber) == NULL)
118 problems.set(problemnumber, new Problem(problemname, timeout));
119 Problem *problem = problems.get(problemnumber);
120 long long metric = -1;
121 int sat = IS_INDETER;
122 //Read data in from results file
123 snprintf(buffer, sizeof(buffer), "result%u", i);
125 myfile.open (buffer, ios::in);
128 if (myfile.is_open()) {
133 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
134 problem->result = sat;
135 } else if (problem->result != sat && sat != IS_INDETER) {
136 model_print("******** Result has changed ********\n");
140 if (tuner->getTime(problem) == -1)
141 tuner->problems.push(problem);
142 tuner->setTime(problem, metric);
149 long long MultiTuner::evaluate(Problem *problem, TunerRecord *tuner) {
152 snprintf(buffer, sizeof(buffer), "problem%u", execnum);
155 myfile.open (buffer, ios::out);
158 if (myfile.is_open()) {
159 myfile << problem->getProblem() << endl;
160 myfile << problem->problemnumber << endl;
166 snprintf(buffer, sizeof(buffer), "tunernum%u", execnum);
169 myfile.open (buffer, ios::out);
172 if (myfile.is_open()) {
173 myfile << tuner->tunernumber << endl;
178 //Write out the tuner
179 snprintf(buffer, sizeof(buffer), "tuner%u", execnum);
180 tuner->getTuner()->serialize(buffer);
183 snprintf(buffer, sizeof(buffer), "./run.sh deserializerun %s %u tuner%u result%u > log%u", problem->getProblem(), problem->timeout, execnum, execnum, execnum);
184 int status = system(buffer);
186 long long metric = -1;
187 int sat = IS_INDETER;
190 //Read data in from results file
191 snprintf(buffer, sizeof(buffer), "result%u", execnum);
194 myfile.open (buffer, ios::in);
197 if (myfile.is_open()) {
202 updateTimeout(problem, metric);
203 snprintf(buffer, sizeof(buffer), "tuner%uused", execnum);
204 tuner->getTuner()->addUsed(buffer);
206 //Increment execution count
209 if (problem->result == UNSETVALUE && sat != IS_INDETER) {
210 problem->result = sat;
211 } else if (problem->result != sat && sat != IS_INDETER) {
212 model_print("******** Result has changed ********\n");
214 if(sat == IS_INDETER && metric != -1){ //The case when we have a timeout
220 void MultiTuner::updateTimeout(Problem *problem, long long metric){
221 double currentTime= metric / NANOSEC;
222 if(currentTime < problem->besttime){
223 problem->besttime = currentTime;
226 if(problem->besttime > 30){
227 adoptive = problem->besttime * 5;
231 if(adoptive < problem->timeout){
232 problem->timeout = adoptive;
234 LOG("Timeout=%u\tadoptive%u\tcurrentTime=%f\n", problem->timeout, adoptive, currentTime);
237 void MultiTuner::tuneComp() {
238 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
239 for (uint b = 0; b < budget; b++) {
240 model_print("Round %u of %u\n", b, budget);
241 uint tSize = tunerV->getSize();
242 for (uint i = 0; i < tSize; i++) {
243 SearchTuner *tmpTuner = mutateTuner(tunerV->get(i)->getTuner(), b);
244 TunerRecord *tmp = new TunerRecord(tmpTuner);
245 tmp->tunernumber = allTuners.getSize();
246 model_print("Mutated tuner %u to generate tuner %u\n", tunerV->get(i)->tunernumber, tmp->tunernumber);
251 Hashtable<TunerRecord *, int, uint64_t> scores;
252 for (uint i = 0; i < problems.getSize(); i++) {
253 Problem *problem = problems.get(i);
254 Vector<TunerRecord *> places;
255 for (uint j = 0; j < tunerV->getSize(); j++) {
256 TunerRecord *tuner = tunerV->get(j);
257 long long metric = tuner->getTime(problem);
259 metric = evaluate(problem, tuner);
260 if (tuner->getTime(problem) == -1) {
261 tuner->problems.push(problem);
263 LOG("%u.Problem<%s>\tTuner<%p, %d>\tMetric<%lld>\n", i, problem->problem,tuner, tuner->tunernumber, metric);
264 LOG("*****************************\n");
266 tuner->setTime(problem, metric);
270 for (; k < places.getSize(); k++) {
271 if (metric < places.get(k)->getTime(problem))
274 LOG("place[%u]=Tuner<%p,%d>\n", k, tuner, tuner->tunernumber);
275 places.insertAt(k, tuner);
279 for (uint k = 0; k < places.getSize() && points; k++) {
280 TunerRecord *tuner = places.get(k);
282 if (scores.contains(tuner))
283 currScore = scores.get(tuner);
285 LOG("Problem<%s>\tTuner<%p,%d>\tmetric<%d>\n", problem->problem, tuner, tuner->tunernumber, currScore);
286 LOG("**************************\n");
287 scores.put(tuner, currScore);
291 Vector<TunerRecord *> ranking;
292 for (uint i = 0; i < tunerV->getSize(); i++) {
293 TunerRecord *tuner = tunerV->get(i);
295 if (scores.contains(tuner))
296 score = scores.get(tuner);
298 for (; j < ranking.getSize(); j++) {
299 TunerRecord *t = ranking.get(j);
301 if (scores.contains(t))
302 tscore = scores.get(t);
306 LOG("ranking[%u]=tuner<%p,%u>(Score=%d)\n", j, tuner, tuner->tunernumber, score);
307 LOG("************************\n");
308 ranking.insertAt(j, tuner);
310 LOG("tunerSize=%u\trankingSize=%u\ttunerVSize=%u\n", tuners.getSize(), ranking.getSize(), tunerV->getSize());
311 for (uint i = tuners.getSize(); i < ranking.getSize(); i++) {
312 TunerRecord *tuner = ranking.get(i);
313 LOG("Removing tuner %u\n", tuner->tunernumber);
314 for (uint j = 0; j < tunerV->getSize(); j++) {
315 if (tunerV->get(j) == tuner)
323 void MultiTuner::mapProblemsToTuners(Vector<TunerRecord *> *tunerV) {
324 for (uint i = 0; i < problems.getSize(); i++) {
325 Problem *problem = problems.get(i);
326 TunerRecord *bestTuner = NULL;
327 long long bestscore = 0;
328 for (uint j = 0; j < tunerV->getSize(); j++) {
329 TunerRecord *tuner = tunerV->get(j);
330 long long metric = tuner->getTime(problem);
332 metric = evaluate(problem, tuner);
334 tuner->setTime(problem, metric);
336 if ((bestTuner == NULL && metric != -1) ||
337 (metric < bestscore && metric != -1)) {
342 if (bestTuner != NULL)
343 bestTuner->problems.push(problem);
347 void clearVector(Vector<TunerRecord *> *tunerV) {
348 for (uint j = 0; j < tunerV->getSize(); j++) {
349 TunerRecord *tuner = tunerV->get(j);
350 tuner->problems.clear();
354 void MultiTuner::tuneK() {
355 Vector<TunerRecord *> *tunerV = new Vector<TunerRecord *>(&tuners);
356 for (uint i = 0; i < rounds; i++) {
358 mapProblemsToTuners(tunerV);
359 improveTuners(tunerV);
361 model_print("Best tuners\n");
362 for (uint j = 0; j < tunerV->getSize(); j++) {
363 TunerRecord *tuner = tunerV->get(j);
365 sprintf(buffer, "tuner%u.conf", j);
366 tuner->getTuner()->serialize(buffer);
367 tuner->getTuner()->print();
372 void MultiTuner::improveTuners(Vector<TunerRecord *> *tunerV) {
373 for (uint j = 0; j < tunerV->getSize(); j++) {
374 TunerRecord *tuner = tunerV->get(j);
375 TunerRecord *newtuner = tune(tuner);
376 tunerV->set(j, newtuner);
380 double MultiTuner::evaluateAll(TunerRecord *tuner) {
382 for (uint i = 0; i < tuner->problems.getSize(); i++) {
383 Problem *problem = tuner->problems.get(i);
384 long long metric = tuner->getTime(problem);
386 metric = evaluate(problem, tuner);
388 tuner->setTime(problem, metric);
391 double score = metric;
394 return pow(product, 1 / ((double)tuner->problems.getSize()));
397 SearchTuner *MultiTuner::mutateTuner(SearchTuner *oldTuner, uint k) {
398 SearchTuner *newTuner = oldTuner->copyUsed();
399 uint numSettings = oldTuner->getSize();
400 uint settingsToMutate = (uint)(AUTOTUNERFACTOR * (((double)numSettings) * (budget - k)) / (budget));
401 if (settingsToMutate < 1)
402 settingsToMutate = 1;
403 model_print("Mutating %u settings\n", settingsToMutate);
404 while (settingsToMutate-- != 0) {
405 newTuner->randomMutate();
410 TunerRecord *MultiTuner::tune(TunerRecord *tuner) {
411 TunerRecord *bestTuner = NULL;
412 double bestScore = DBL_MAX;
414 TunerRecord *oldTuner = tuner;
415 double base_temperature = evaluateAll(oldTuner);
416 double oldScore = base_temperature;
418 for (uint i = 0; i < budget; i++) {
419 SearchTuner *tmpTuner = mutateTuner(oldTuner->getTuner(), i);
420 TunerRecord *newTuner = oldTuner->changeTuner(tmpTuner);
421 newTuner->tunernumber = allTuners.getSize();
422 allTuners.push(newTuner);
423 double newScore = evaluateAll(newTuner);
424 newTuner->tuner->printUsed();
425 model_print("Received score %f\n", newScore);
426 double scoreDiff = newScore - oldScore; //smaller is better
427 if (newScore < bestScore) {
428 bestScore = newScore;
429 bestTuner = newTuner;
436 double currTemp = base_temperature * (((double)budget - i) / budget);
437 acceptanceP = exp(-scoreDiff / currTemp);
439 double ran = ((double)random()) / RAND_MAX;
440 if (ran <= acceptanceP) {