Adding a directed search based config for the tuner

[satune.git] / src / Tuner / autotuner.cc

diff --git a/src/Tuner/autotuner.cc b/src/Tuner/autotuner.cc
index f4509677eed754d27d63ed2bb8cea63d929f1a46..857b21cf6a5ad3c935d26f63a2d0d2b8e3db5191 100644 (file)
--- a/src/Tuner/autotuner.cc
+++ b/src/Tuner/autotuner.cc
@@ -5,68 +5,92 @@
 #include <stdlib.h>
 #include <float.h>
 
+#define UNSETVALUE -1
+#define TIMEOUTSEC 5000
 AutoTuner::AutoTuner(uint _budget) :
-       budget(_budget) {
+       budget(_budget), result(UNSETVALUE) {
 }
 
 void AutoTuner::addProblem(CSolver *solver) {
        solvers.push(solver);
 }
 
-long long AutoTuner::evaluate(CSolver * problem, SearchTuner *tuner) {
-       CSolver * copy=problem->clone();
+long long AutoTuner::evaluate(CSolver *problem, SearchTuner *tuner) {
+       CSolver *copy = problem->clone();
        copy->setTuner(tuner);
-       int result = copy->startEncoding();
-       long long elapsedTime=copy->getElapsedTime();
-       long long encodeTime=copy->getEncodeTime();
-       long long solveTime=copy->getSolveTime();
-       long long metric=elapsedTime;
-       model_print("Elapsed Time: %llu\n", elapsedTime);
-       model_print("Encode Time: %llu\n", encodeTime);
-       model_print("Solve Time: %llu\n", solveTime);
+       copy->setSatSolverTimeout(TIMEOUTSEC);
+       model_print("**********************\n");
+       int sat = copy->solve();
+       if (result == UNSETVALUE && sat != IS_INDETER)
+               result = sat;
+       else if (result != sat && sat != IS_INDETER) {
+               model_print("&&&&&&&&&&&&&&&&&& Result has changed &&&&&&&&&&&&&\n");
+               copy->printConstraints();
+       }
+       long long metric = copy->getElapsedTime();
        delete copy;
        return metric;
 }
 
 double AutoTuner::evaluateAll(SearchTuner *tuner) {
-       double product=1;
-       for(uint i=0;i<solvers.getSize();i++) {
-               CSolver * problem=solvers.get(i);
-               double score=evaluate(problem, tuner);
-               product*=score;
+       double product = 1;
+       for (uint i = 0; i < solvers.getSize(); i++) {
+               CSolver *problem = solvers.get(i);
+               double score = evaluate(problem, tuner);
+               product *= score;
        }
-       return pow(product, 1/((double)solvers.getSize()));
+       return pow(product, 1 / ((double)solvers.getSize()));
 }
 
-SearchTuner * AutoTuner::mutateTuner(SearchTuner * oldTuner, uint k) {
-       SearchTuner *newTuner=oldTuner->copyUsed();
-       uint numSettings=oldTuner->getSize();
-       double factor=0.3;//Adjust this factor...
-       uint settingsToMutate=(uint)(factor*(((double)numSettings) * k)/(budget));
+SearchTuner *AutoTuner::mutateTuner(SearchTuner *oldTuner, uint k) {
+       SearchTuner *newTuner = oldTuner->copyUsed();
+       uint numSettings = oldTuner->getSize();
+       uint settingsToMutate = (uint)(AUTOTUNERFACTOR * (((double)numSettings) * (budget - k)) / (budget));
        if (settingsToMutate < 1)
-               settingsToMutate=1;
+               settingsToMutate = 1;
        model_print("Mutating %u settings\n", settingsToMutate);
-       while(settingsToMutate-- != 0) {
+       while (settingsToMutate-- != 0) {
                newTuner->randomMutate();
        }
        return newTuner;
 }
 
+#ifdef STATICENCGEN
+SearchTuner *AutoTuner::mutateTuner(SearchTuner *oldTuner) {
+       SearchTuner *newTuner = oldTuner->copyUsed();
+       result = newTuner->nextStaticTuner();
+       return result==EXIT_FAILURE? newTuner: NULL;
+}
+#endif
 
 void AutoTuner::tune() {
-       SearchTuner * bestTuner = NULL;
-       double bestScore=DBL_MAX;
+       SearchTuner *bestTuner = NULL;
+       double bestScore = DBL_MAX;
 
-       SearchTuner * oldTuner=new SearchTuner();
-       double base_temperature=evaluateAll(oldTuner);
-       double oldScore=base_temperature;
+       SearchTuner *oldTuner = new SearchTuner();
+       double base_temperature = evaluateAll(oldTuner);
+       double oldScore = base_temperature;
 
-       for (uint i=0;i<budget;i++) {
-               SearchTuner *newTuner=mutateTuner(oldTuner, i);
-               double newScore=evaluateAll(newTuner);
+#ifdef STATICENCGEN
+       while(true){
+               SearchTuner *newTuner = mutateTuner(oldTuner);
+               if(newTuner == NULL)
+                       return;
+               double newScore = evaluateAll(newTuner);
+               newTuner->printUsed();
+               model_print("Received score %f\n", newScore);
+               delete oldTuner;
+               oldScore = newScore;
+               oldTuner = newTuner;
+       }
+#endif
+       
+       for (uint i = 0; i < budget; i++) {
+               SearchTuner *newTuner = mutateTuner(oldTuner, i);
+               double newScore = evaluateAll(newTuner);
                newTuner->printUsed();
                model_print("Received score %f\n", newScore);
-               double scoreDiff=newScore - oldScore; //smaller is better
+               double scoreDiff = newScore - oldScore; //smaller is better
                if (newScore < bestScore) {
                        if (bestTuner != NULL)
                                delete bestTuner;
@@ -78,7 +102,7 @@ void AutoTuner::tune() {
                if (scoreDiff < 0) {
                        acceptanceP = 1;
                } else {
-                       double currTemp=base_temperature * (((double)budget - i) / budget);
+                       double currTemp = base_temperature * (((double)budget - i) / budget);
                        acceptanceP = exp(-scoreDiff / currTemp);
                }
                double ran = ((double)random()) / RAND_MAX;
@@ -92,6 +116,7 @@ void AutoTuner::tune() {
        }
        model_print("Best tuner:\n");
        bestTuner->print();
+       bestTuner->serialize();
        model_print("Received score %f\n", bestScore);
        if (bestTuner != NULL)
                delete bestTuner;