Finding the 3 best tuners after the learning process

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

diff --git a/src/Tuner/multituner.cc b/src/Tuner/multituner.cc
index 2d823fe397149b7c6e24ed65d471d47893a33c58..0850f66ede42289b2623187d5407fc04e372ba18 100644 (file)
--- a/src/Tuner/multituner.cc
+++ b/src/Tuner/multituner.cc
@@ -7,10 +7,15 @@
 #include <string.h>
 #include <iostream>
 #include <fstream>
+#include <limits>
 
 #define UNSETVALUE -1
 
-Problem::Problem(const char *_problem) : problemnumber(-1), result(UNSETVALUE) {
+Problem::Problem(const char *_problem) :
+       problemnumber(-1),
+       result(UNSETVALUE),
+       besttime(LLONG_MAX)
+{
        uint len = strlen(_problem);
        problem = (char *) ourmalloc(len + 1);
        memcpy(problem, _problem, len + 1);
@@ -39,7 +44,7 @@ TunerRecord *TunerRecord::changeTuner(SearchTuner *_newtuner) {
 }
 
 MultiTuner::MultiTuner(uint _budget, uint _rounds, uint _timeout) :
-       budget(_budget), rounds(_rounds), timeout(_timeout), besttime(_timeout), execnum(0) {
+       budget(_budget), rounds(_rounds), timeout(_timeout), execnum(0) {
 }
 
 MultiTuner::~MultiTuner() {
@@ -71,6 +76,52 @@ void MultiTuner::printData() {
        }
 }
 
+void MultiTuner::findBestThreeTuners() {
+       if(allTuners.getSize() < 3){
+               printData();
+               return;
+       }
+       TunerRecord * bestTuners[3];
+       double score = DBL_MAX;
+       for (uint i = 0; i < allTuners.getSize()-2; i++) {
+               for(uint j=i+1; j< allTuners.getSize()-1; j++){
+                       for(uint k=j+1; k<allTuners.getSize(); k++){
+                               TunerRecord *tuner1 = allTuners.get(i);
+                               TunerRecord *tuner2 = allTuners.get(j);
+                               TunerRecord *tuner3 = allTuners.get(k);
+                               double mintimes[problems.getSize()];
+                               for(uint l=0; l < problems.getSize(); l++){
+                                       Problem *problem = problems.get(l);
+                                       mintimes[l] = pow(min(tuner1->getTime(problem), tuner2->getTime(problem), tuner3->getTime(problem)), (double)1 / problems.getSize());
+                               }
+                               double result=1;
+                               for(uint l=0; l< problems.getSize(); l++){
+                                       result *= mintimes[l];
+                               }
+                               if(result < score){
+                                       score = result;
+                                       bestTuners[0] = tuner1;
+                                       bestTuners[1] = tuner2;
+                                       bestTuners[2] = tuner3;
+                               }
+                       }
+               }
+       }
+       model_print("Best 3 tuners:\n");
+       for(uint i=0; i<3; i++){
+               TunerRecord * tuner = bestTuners[i];
+               SearchTuner *stun = tuner->getTuner();
+               model_print("Tuner %u\n", tuner->tunernumber);
+               stun->print();
+               for (uint j = 0; j < tuner->problems.getSize(); j++) {
+                       Problem *problem = tuner->problems.get(j);
+                       model_print("Problem %s\n", problem->getProblem());
+                       model_print("Time = %lld\n", tuner->getTime(problem));
+               }
+               model_print("----------------------------------\n\n\n");
+       }
+}
+
 void MultiTuner::addTuner(SearchTuner *tuner) {
        TunerRecord *t = new TunerRecord(tuner);
        tuners.push(t);
@@ -173,8 +224,13 @@ long long MultiTuner::evaluate(Problem *problem, TunerRecord *tuner) {
        snprintf(buffer, sizeof(buffer), "tuner%u", execnum);
        tuner->getTuner()->serialize(buffer);
 
+       //compute timeout
+       uint timeinsecs = problem->besttime / NANOSEC;
+       uint adaptive = (timeinsecs > 30) ? timeinsecs * 5 : 150;
+       uint maxtime = (adaptive < timeout) ? adaptive : timeout;
+
        //Do run
-       snprintf(buffer, sizeof(buffer), "./run.sh deserializerun %s %u tuner%u result%u > log%u", problem->getProblem(), timeout, execnum, execnum, execnum);
+       snprintf(buffer, sizeof(buffer), "./run.sh deserializerun %s %u tuner%u result%u > log%u", problem->getProblem(), maxtime, execnum, execnum, execnum);
        int status = system(buffer);
 
        long long metric = -1;
@@ -193,7 +249,7 @@ long long MultiTuner::evaluate(Problem *problem, TunerRecord *tuner) {
                        myfile >> sat;
                        myfile.close();
                }
-               updateTimeout(metric);
+               updateTimeout(problem, metric);
                snprintf(buffer, sizeof(buffer), "tuner%uused", execnum);
                tuner->getTuner()->addUsed(buffer);
        }
@@ -205,27 +261,16 @@ long long MultiTuner::evaluate(Problem *problem, TunerRecord *tuner) {
        } else if (problem->result != sat && sat != IS_INDETER) {
                model_print("******** Result has changed ********\n");
        }
-       if(sat == IS_INDETER && metric != -1){ //The case when we have a timeout
-               metric = -1; 
+       if (sat == IS_INDETER && metric != -1) {//The case when we have a timeout
+               metric = -1;
        }
        return metric;
 }
 
-void MultiTuner::updateTimeout(long long metric){
-       double currentTime= metric / NANOSEC;
-       if(currentTime < besttime){
-               besttime = currentTime;
-       }
-       uint adoptive;
-       if(besttime > 30){
-               adoptive = besttime * 5;
-       }else {
-               adoptive = 150;
-       }
-       if(adoptive < timeout){
-               timeout = adoptive;
+void MultiTuner::updateTimeout(Problem *problem, long long metric) {
+       if (metric < problem->besttime) {
+               problem->besttime = metric;
        }
-       LOG("Timeout=%u\tadoptive%u\tcurrentTime=%f\n", timeout, adoptive, currentTime);
 }
 
 void MultiTuner::tuneComp() {