- # if defined (__APPLE__) || (__MACH__) || (linux) || (__linux)
- if(processors == 1){
- driver(distCalculator, seqDB, 0, numSeqs, distFile, cutoff);
- }
- else if(processors == 2){
-
- int pid = fork();
- if(pid > 0){
- driver(distCalculator, seqDB, 0, (numSeqs/sqrt(2)), distFile + "tempa", cutoff);
- appendFiles((distFile+"tempa"), distFile);
- remove((distFile + "tempa").c_str());
- }
- else{
- driver(distCalculator, seqDB, (numSeqs/sqrt(2)), numSeqs, distFile + "tempb", cutoff);
- appendFiles((distFile+"tempb"), distFile);
- remove((distFile + "tempb").c_str());
- }
- wait(NULL);
-
- }
- else if(processors == 3){
- int pid1 = fork();
- if(pid1 > 0){
- int pid2 = fork();
- if(pid2 > 0){
- driver(distCalculator, seqDB, 0, sqrt(3) * numSeqs / 3, distFile + "tempa", cutoff);
- appendFiles(distFile+"tempa", distFile);
- remove((distFile + "tempa").c_str());
- }
- else{
- driver(distCalculator, seqDB, sqrt(3) * numSeqs / 3, sqrt(6) * numSeqs / 3, distFile + "tempb", cutoff);
- appendFiles(distFile+"tempb", distFile);
- remove((distFile + "tempb").c_str());
- }
- wait(NULL);
- }
- else{
- driver(distCalculator, seqDB, sqrt(6) * numSeqs / 3, numSeqs, distFile + "tempc", cutoff);
- appendFiles(distFile+"tempc", distFile);
- remove((distFile + "tempc").c_str());
- }
- wait(NULL);
+
+#if defined (__APPLE__) || (__MACH__) || (linux) || (__linux)
+ //if you don't need to fork anything
+ if(processors == 1){
+ driver(0, numSeqs, outputFile, cutoff);
+ }else{ //you have multiple processors
+
+ for (int i = 0; i < processors; i++) {
+ lines.push_back(new linePair());
+ lines[i]->start = int (sqrt(float(i)/float(processors)) * numSeqs);
+ lines[i]->end = int (sqrt(float(i+1)/float(processors)) * numSeqs);