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+/*
+ *  pairwiseseqscommand.cpp
+ *  Mothur
+ *
+ *  Created by westcott on 10/20/10.
+ *  Copyright 2010 Schloss Lab. All rights reserved.
+ *
+ */
+
+#include "pairwiseseqscommand.h"
+
+//**********************************************************************************************************************
+vector<string> PairwiseSeqsCommand::setParameters(){   
+       try {
+               CommandParameter pfasta("fasta", "InputTypes", "", "", "none", "none", "none",false,true); parameters.push_back(pfasta);
+               CommandParameter palign("align", "Multiple", "needleman-gotoh-blast-noalign", "needleman", "", "", "",false,false); parameters.push_back(palign);
+               CommandParameter pmatch("match", "Number", "", "1.0", "", "", "",false,false); parameters.push_back(pmatch);
+               CommandParameter pmismatch("mismatch", "Number", "", "-1.0", "", "", "",false,false); parameters.push_back(pmismatch);
+               CommandParameter pgapopen("gapopen", "Number", "", "-2.0", "", "", "",false,false); parameters.push_back(pgapopen);
+               CommandParameter pgapextend("gapextend", "Number", "", "-1.0", "", "", "",false,false); parameters.push_back(pgapextend);
+               CommandParameter pprocessors("processors", "Number", "", "1", "", "", "",false,false); parameters.push_back(pprocessors);
+               CommandParameter poutput("output", "Multiple", "column-lt-square", "column", "", "", "",false,false); parameters.push_back(poutput);
+               CommandParameter pcalc("calc", "Multiple", "nogaps-eachgap-onegap", "onegap", "", "", "",false,false); parameters.push_back(pcalc);
+               CommandParameter pcountends("countends", "Boolean", "", "T", "", "", "",false,false); parameters.push_back(pcountends);
+               CommandParameter pcompress("compress", "Boolean", "", "F", "", "", "",false,false); parameters.push_back(pcompress);
+               CommandParameter pcutoff("cutoff", "Number", "", "1.0", "", "", "",false,false); parameters.push_back(pcutoff);
+               CommandParameter pinputdir("inputdir", "String", "", "", "", "", "",false,false); parameters.push_back(pinputdir);
+               CommandParameter poutputdir("outputdir", "String", "", "", "", "", "",false,false); parameters.push_back(poutputdir);
+               
+               vector<string> myArray;
+               for (int i = 0; i < parameters.size(); i++) {   myArray.push_back(parameters[i].name);          }
+               return myArray;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "setParameters");
+               exit(1);
+       }
+}
+//**********************************************************************************************************************
+string PairwiseSeqsCommand::getHelpString(){   
+       try {
+               string helpString = "";
+               helpString += "The pairwise.seqs command reads a fasta file and creates distance matrix.\n";
+               helpString += "The pairwise.seqs command parameters are fasta, align, match, mismatch, gapopen, gapextend, calc, output, cutoff and processors.\n";
+               helpString += "The fasta parameter is required. You may enter multiple fasta files by separating their names with dashes. ie. fasta=abrecovery.fasta-amzon.fasta \n";
+               helpString += "The align parameter allows you to specify the alignment method to use.  Your options are: gotoh, needleman, blast and noalign. The default is needleman.\n";
+               helpString += "The match parameter allows you to specify the bonus for having the same base. The default is 1.0.\n";
+               helpString += "The mistmatch parameter allows you to specify the penalty for having different bases.  The default is -1.0.\n";
+               helpString += "The gapopen parameter allows you to specify the penalty for opening a gap in an alignment. The default is -2.0.\n";
+               helpString += "The gapextend parameter allows you to specify the penalty for extending a gap in an alignment.  The default is -1.0.\n";
+               helpString += "The calc parameter allows you to specify the method of calculating the distances.  Your options are: nogaps, onegap or eachgap. The default is onegap.\n";
+               helpString += "The countends parameter allows you to specify whether to include terminal gaps in distance.  Your options are: T or F. The default is T.\n";
+               helpString += "The cutoff parameter allows you to specify maximum distance to keep. The default is 1.0.\n";
+               helpString += "The output parameter allows you to specify format of your distance matrix. Options are column, lt, and square. The default is column.\n";
+               helpString += "The compress parameter allows you to indicate that you want the resulting distance file compressed.  The default is false.\n";
+               helpString += "The pairwise.seqs command should be in the following format: \n";
+               helpString += "pairwise.seqs(fasta=yourfastaFile, align=yourAlignmentMethod) \n";
+               helpString += "Example pairwise.seqs(fasta=candidate.fasta, align=blast)\n";
+               helpString += "Note: No spaces between parameter labels (i.e. fasta), '=' and parameters (i.e.yourFastaFile).\n";
+               return helpString;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "getHelpString");
+               exit(1);
+       }
+}
+
+//**********************************************************************************************************************
+PairwiseSeqsCommand::PairwiseSeqsCommand(){    
+       try {
+               abort = true; calledHelp = true; 
+               setParameters();
+               vector<string> tempOutNames;
+               outputTypes["phylip"] = tempOutNames;
+               outputTypes["column"] = tempOutNames;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "PairwiseSeqsCommand");
+               exit(1);
+       }
+}
+//**********************************************************************************************************************
+PairwiseSeqsCommand::PairwiseSeqsCommand(string option)  {
+       try {
+               abort = false; calledHelp = false;   
+       
+               //allow user to run help
+               if(option == "help") { help(); abort = true; calledHelp = true; }
+               else if(option == "citation") { citation(); abort = true; calledHelp = true;}
+               
+               else {
+                       vector<string> myArray = setParameters();
+                       
+                       OptionParser parser(option);
+                       map<string, string> parameters = parser.getParameters(); 
+                       
+                       ValidParameters validParameter("pairwise.seqs");
+                       map<string, string>::iterator it;
+                       
+                       //check to make sure all parameters are valid for command
+                       for (it = parameters.begin(); it != parameters.end(); it++) { 
+                               if (validParameter.isValidParameter(it->first, myArray, it->second) != true) {  abort = true;  }
+                       }
+                       
+                       //initialize outputTypes
+                       vector<string> tempOutNames;
+                       outputTypes["phylip"] = tempOutNames;
+                       outputTypes["column"] = tempOutNames;
+                       
+                       //if the user changes the output directory command factory will send this info to us in the output parameter 
+                       outputDir = validParameter.validFile(parameters, "outputdir", false);           if (outputDir == "not found"){  outputDir = "";         }
+                       
+
+                       //if the user changes the input directory command factory will send this info to us in the output parameter 
+                       string inputDir = validParameter.validFile(parameters, "inputdir", false);              
+                       
+                       if (inputDir == "not found"){   inputDir = "";          }
+
+                       fastaFileName = validParameter.validFile(parameters, "fasta", false);
+                       if (fastaFileName == "not found") {                             
+                               //if there is a current fasta file, use it
+                               string filename = m->getFastaFile(); 
+                               if (filename != "") { fastaFileNames.push_back(filename); m->mothurOut("Using " + filename + " as input file for the fasta parameter."); m->mothurOutEndLine(); }
+                               else {  m->mothurOut("You have no current fastafile and the fasta parameter is required."); m->mothurOutEndLine(); abort = true; }
+                       }
+                       else { 
+                               m->splitAtDash(fastaFileName, fastaFileNames);
+                               
+                               //go through files and make sure they are good, if not, then disregard them
+                               for (int i = 0; i < fastaFileNames.size(); i++) {
+                                       
+                                       bool ignore = false;
+                                       if (fastaFileNames[i] == "current") { 
+                                               fastaFileNames[i] = m->getFastaFile(); 
+                                               if (fastaFileNames[i] != "") {  m->mothurOut("Using " + fastaFileNames[i] + " as input file for the fasta parameter where you had given current."); m->mothurOutEndLine(); }
+                                               else {  
+                                                       m->mothurOut("You have no current fastafile, ignoring current."); m->mothurOutEndLine(); ignore=true; 
+                                                       //erase from file list
+                                                       fastaFileNames.erase(fastaFileNames.begin()+i);
+                                                       i--;
+                                               }
+                                       }
+                                       
+                                       if (!ignore) {
+                                       
+                                               if (inputDir != "") {
+                                                       string path = m->hasPath(fastaFileNames[i]);
+                                                       //if the user has not given a path then, add inputdir. else leave path alone.
+                                                       if (path == "") {       fastaFileNames[i] = inputDir + fastaFileNames[i];               }
+                                               }
+               
+                                               int ableToOpen;
+                                               ifstream in;
+
+                                               ableToOpen = m->openInputFile(fastaFileNames[i], in, "noerror");
+                                       
+                                               //if you can't open it, try default location
+                                               if (ableToOpen == 1) {
+                                                       if (m->getDefaultPath() != "") { //default path is set
+                                                               string tryPath = m->getDefaultPath() + m->getSimpleName(fastaFileNames[i]);
+                                                               m->mothurOut("Unable to open " + fastaFileNames[i] + ". Trying default " + tryPath); m->mothurOutEndLine();
+                                                               ifstream in2;
+                                                               ableToOpen = m->openInputFile(tryPath, in2, "noerror");
+                                                               in2.close();
+                                                               fastaFileNames[i] = tryPath;
+                                                       }
+                                               }
+                                               
+                                               //if you can't open it, try output location
+                                               if (ableToOpen == 1) {
+                                                       if (m->getOutputDir() != "") { //default path is set
+                                                               string tryPath = m->getOutputDir() + m->getSimpleName(fastaFileNames[i]);
+                                                               m->mothurOut("Unable to open " + fastaFileNames[i] + ". Trying output directory " + tryPath); m->mothurOutEndLine();
+                                                               ifstream in2;
+                                                               ableToOpen = m->openInputFile(tryPath, in2, "noerror");
+                                                               in2.close();
+                                                               fastaFileNames[i] = tryPath;
+                                                       }
+                                               }
+                                               
+                                               in.close();                                     
+
+                                               if (ableToOpen == 1) { 
+                                                       m->mothurOut("Unable to open " + fastaFileNames[i] + ". It will be disregarded."); m->mothurOutEndLine(); 
+                                                       //erase from file list
+                                                       fastaFileNames.erase(fastaFileNames.begin()+i);
+                                                       i--;
+                                               }else {
+                                                       m->setFastaFile(fastaFileNames[i]);
+                                               }
+                                       }
+                               }
+                               
+                               //make sure there is at least one valid file left
+                               if (fastaFileNames.size() == 0) { m->mothurOut("no valid files."); m->mothurOutEndLine(); abort = true; }
+                       }
+               
+                       //check for optional parameter and set defaults
+                       // ...at some point should added some additional type checking...
+                       string temp;
+                       temp = validParameter.validFile(parameters, "match", false);            if (temp == "not found"){       temp = "1.0";                   }
+                       m->mothurConvert(temp, match);  
+                       
+                       temp = validParameter.validFile(parameters, "mismatch", false);         if (temp == "not found"){       temp = "-1.0";                  }
+                       m->mothurConvert(temp, misMatch);  
+            if (misMatch > 0) { m->mothurOut("[ERROR]: mismatch must be negative.\n"); abort=true; }
+                       
+                       temp = validParameter.validFile(parameters, "gapopen", false);          if (temp == "not found"){       temp = "-2.0";                  }
+                       m->mothurConvert(temp, gapOpen);  
+            if (gapOpen > 0) { m->mothurOut("[ERROR]: gapopen must be negative.\n"); abort=true; }
+                       
+                       temp = validParameter.validFile(parameters, "gapextend", false);        if (temp == "not found"){       temp = "-1.0";                  }
+                       m->mothurConvert(temp, gapExtend); 
+            if (gapExtend > 0) { m->mothurOut("[ERROR]: gapextend must be negative.\n"); abort=true; }
+                       
+                       temp = validParameter.validFile(parameters, "processors", false);       if (temp == "not found"){       temp = m->getProcessors();      }
+                       m->setProcessors(temp);
+                       m->mothurConvert(temp, processors);
+                       
+                       temp = validParameter.validFile(parameters, "cutoff", false);           if(temp == "not found"){        temp = "1.0"; }
+                       m->mothurConvert(temp, cutoff); 
+                       
+                       temp = validParameter.validFile(parameters, "countends", false);        if(temp == "not found"){        temp = "T";     }
+                       countends = m->isTrue(temp); 
+                       
+                       temp = validParameter.validFile(parameters, "compress", false);         if(temp == "not found"){  temp = "F"; }
+                       compress = m->isTrue(temp); 
+                       
+                       align = validParameter.validFile(parameters, "align", false);           if (align == "not found"){      align = "needleman";    }
+                       
+                       output = validParameter.validFile(parameters, "output", false);         if(output == "not found"){      output = "column"; }
+                       if ((output != "column") && (output != "lt") && (output != "square")) { m->mothurOut(output + " is not a valid output form. Options are column, lt and square. I will use column."); m->mothurOutEndLine(); output = "column"; }
+                       
+                       calc = validParameter.validFile(parameters, "calc", false);                     
+                       if (calc == "not found") { calc = "onegap";  }
+                       else { 
+                                if (calc == "default")  {  calc = "onegap";  }
+                       }
+                       m->splitAtDash(calc, Estimators);
+               }
+               
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "PairwiseSeqsCommand");
+               exit(1);
+       }
+}
+//**********************************************************************************************************************
+
+int PairwiseSeqsCommand::execute(){
+       try {
+               if (abort == true) { if (calledHelp) { return 0; }  return 2;   }
+               
+               longestBase = 2000; //will need to update this in driver if we find sequences with more bases.  hardcoded so we don't have the pre-read user fasta file.
+               
+               cutoff += 0.005;
+               
+               for (int s = 0; s < fastaFileNames.size(); s++) {
+                       if (m->control_pressed) { outputTypes.clear(); return 0; }
+                       
+                       m->mothurOut("Processing sequences from " + fastaFileNames[s] + " ..." ); m->mothurOutEndLine();
+                       
+                       if (outputDir == "") {  outputDir += m->hasPath(fastaFileNames[s]); }
+                       
+                       ifstream inFASTA;
+                       m->openInputFile(fastaFileNames[s], inFASTA);
+                       alignDB = SequenceDB(inFASTA); 
+                       inFASTA.close();
+                       
+                       int numSeqs = alignDB.getNumSeqs();
+                       int startTime = time(NULL);
+                       string outputFile = "";
+                               
+                       if (output == "lt") { //does the user want lower triangle phylip formatted file 
+                               outputFile = outputDir + m->getRootName(m->getSimpleName(fastaFileNames[s])) + "phylip.dist";
+                               m->mothurRemove(outputFile); outputTypes["phylip"].push_back(outputFile);
+                       }else if (output == "column") { //user wants column format
+                               outputFile = outputDir + m->getRootName(m->getSimpleName(fastaFileNames[s])) + "dist";
+                               outputTypes["column"].push_back(outputFile);
+                               m->mothurRemove(outputFile);
+                       }else { //assume square
+                               outputFile = outputDir + m->getRootName(m->getSimpleName(fastaFileNames[s])) + "square.dist";
+                               m->mothurRemove(outputFile);
+                               outputTypes["phylip"].push_back(outputFile);
+                       }
+                       
+                       #ifdef USE_MPI
+               
+                       int pid, start, end; 
+                       int tag = 2001;
+                                       
+                       MPI_Status status; 
+                       MPI_Comm_size(MPI_COMM_WORLD, &processors); //set processors to the number of mpi processes running
+                       MPI_Comm_rank(MPI_COMM_WORLD, &pid); //find out who we are
+                       
+                       //each process gets where it should start and stop in the file
+                       if (output != "square") {
+                               start = int (sqrt(float(pid)/float(processors)) * numSeqs);
+                               end = int (sqrt(float(pid+1)/float(processors)) * numSeqs);
+                       }else{
+                               start = int ((float(pid)/float(processors)) * numSeqs);
+                               end = int ((float(pid+1)/float(processors)) * numSeqs);
+                       }
+                       
+                       if (output == "column") {
+                               MPI_File outMPI;
+                               int amode=MPI_MODE_CREATE|MPI_MODE_WRONLY; 
+
+                       char filename[1024];
+                               strcpy(filename, outputFile.c_str());
+                               
+                               MPI_File_open(MPI_COMM_WORLD, filename, amode, MPI_INFO_NULL, &outMPI);
+
+                               if (pid == 0) { //you are the root process 
+                               
+                                       //do your part
+                                       string outputMyPart;
+                                       
+                                       driverMPI(start, end, outMPI, cutoff); 
+                                       
+                                       if (m->control_pressed) { outputTypes.clear(); MPI_File_close(&outMPI);  m->mothurRemove(outputFile); return 0; }
+                               
+                                       //wait on chidren
+                                       for(int i = 1; i < processors; i++) { 
+                                               if (m->control_pressed) { outputTypes.clear();  MPI_File_close(&outMPI);   m->mothurRemove(outputFile);  return 0; }
+                                               
+                                               char buf[5];
+                                               MPI_Recv(buf, 5, MPI_CHAR, i, tag, MPI_COMM_WORLD, &status); 
+                                       }
+                               }else { //you are a child process
+                                       //do your part
+                                       driverMPI(start, end, outMPI, cutoff); 
+                                       
+                                       if (m->control_pressed) { outputTypes.clear();  MPI_File_close(&outMPI);  m->mothurRemove(outputFile);  return 0; }
+                               
+                                       char buf[5];
+                                       strcpy(buf, "done"); 
+                                       //tell parent you are done.
+                                       MPI_Send(buf, 5, MPI_CHAR, 0, tag, MPI_COMM_WORLD);
+                               }
+                               
+                               MPI_File_close(&outMPI);
+                               
+                       }else { //lower triangle format
+                               if (pid == 0) { //you are the root process 
+                               
+                                       //do your part
+                                       string outputMyPart;
+                                       unsigned long long mySize;
+                                       
+                                       if (output != "square"){ driverMPI(start, end, outputFile, mySize); }
+                                       else { driverMPI(start, end, outputFile, mySize, output); }
+               
+                                       if (m->control_pressed) {  outputTypes.clear();   m->mothurRemove(outputFile);   return 0; }
+                                       
+                                       int amode=MPI_MODE_APPEND|MPI_MODE_WRONLY|MPI_MODE_CREATE; //
+                                       MPI_File outMPI;
+                                       MPI_File inMPI;
+
+                                       char filename[1024];
+                                       strcpy(filename, outputFile.c_str());
+
+                                       MPI_File_open(MPI_COMM_SELF, filename, amode, MPI_INFO_NULL, &outMPI);
+
+                                       //wait on chidren
+                                       for(int b = 1; b < processors; b++) { 
+                                               unsigned long long fileSize;
+                                               
+                                               if (m->control_pressed) { outputTypes.clear();  MPI_File_close(&outMPI);  m->mothurRemove(outputFile);   return 0; }
+                                               
+                                               MPI_Recv(&fileSize, 1, MPI_LONG, b, tag, MPI_COMM_WORLD, &status); 
+                                               
+                                               string outTemp = outputFile + toString(b) + ".temp";
+
+                                               char* buf = new char[outTemp.length()];
+                                               memcpy(buf, outTemp.c_str(), outTemp.length());
+                                               
+                                               MPI_File_open(MPI_COMM_SELF, buf, MPI_MODE_DELETE_ON_CLOSE|MPI_MODE_RDONLY, MPI_INFO_NULL, &inMPI);
+                                               delete buf;
+
+                                               int count = 0;
+                                               while (count < fileSize) { 
+                                                       char buf2[1];
+                                                       MPI_File_read(inMPI, buf2, 1, MPI_CHAR, &status);
+                                                       MPI_File_write(outMPI, buf2, 1, MPI_CHAR, &status);
+                                                       count += 1;
+                                               }
+                                               
+                                               MPI_File_close(&inMPI); //deleted on close
+                                       }
+                                       
+                                       MPI_File_close(&outMPI);
+                               }else { //you are a child process
+                                       //do your part
+                                       unsigned long long size;
+                                       if (output != "square"){ driverMPI(start, end, (outputFile + toString(pid) + ".temp"), size); }
+                                       else { driverMPI(start, end, (outputFile + toString(pid) + ".temp"), size, output); }
+                                       
+                                       if (m->control_pressed) {  return 0; }
+                               
+                                       //tell parent you are done.
+                                       MPI_Send(&size, 1, MPI_LONG, 0, tag, MPI_COMM_WORLD);
+                               }
+                       }
+                       MPI_Barrier(MPI_COMM_WORLD); //make everyone wait - just in case
+       #else           
+                                       
+               //#if defined (__APPLE__) || (__MACH__) || (linux) || (__linux) || (__linux__) || (__unix__) || (__unix)
+                       //if you don't need to fork anything
+                       if(processors == 1){
+                               if (output != "square") {  driver(0, numSeqs, outputFile, cutoff); }
+                               else { driver(0, numSeqs, outputFile, "square");  }
+                       }else{ //you have multiple processors
+                               
+                               for (int i = 0; i < processors; i++) {
+                                       distlinePair tempLine;
+                                       lines.push_back(tempLine);
+                                       if (output != "square") {
+                                               lines[i].start = int (sqrt(float(i)/float(processors)) * numSeqs);
+                                               lines[i].end = int (sqrt(float(i+1)/float(processors)) * numSeqs);
+                                       }else{
+                                               lines[i].start = int ((float(i)/float(processors)) * numSeqs);
+                                               lines[i].end = int ((float(i+1)/float(processors)) * numSeqs);
+                                       }
+                               }
+                               
+                               createProcesses(outputFile); 
+                       }
+               //#else
+                       //ifstream inFASTA;
+                       //if (output != "square") {  driver(0, numSeqs, outputFile, cutoff); }
+                       //else { driver(0, numSeqs, outputFile, "square");  }
+               //#endif
+               
+       #endif
+                       if (m->control_pressed) { outputTypes.clear();   m->mothurRemove(outputFile); return 0; }
+                       
+                       #ifdef USE_MPI
+                               MPI_Comm_rank(MPI_COMM_WORLD, &pid); 
+                                               
+                               if (pid == 0) { //only one process should output to screen
+                       #endif
+                       
+                       ifstream fileHandle;
+                       fileHandle.open(outputFile.c_str());
+                       if(fileHandle) {
+                               m->gobble(fileHandle);
+                               if (fileHandle.eof()) { m->mothurOut(outputFile + " is blank. This can result if there are no distances below your cutoff.");  m->mothurOutEndLine(); }
+                       }
+                       
+                       if (compress) {
+                               m->mothurOut("Compressing..."); m->mothurOutEndLine();
+                               m->mothurOut("(Replacing " + outputFile + " with " + outputFile + ".gz)"); m->mothurOutEndLine();
+                               system(("gzip -v " + outputFile).c_str());
+                               outputNames.push_back(outputFile + ".gz");
+                       }else { outputNames.push_back(outputFile); }
+                       
+                       #ifdef USE_MPI
+                               }
+                       #endif
+                       
+                       m->mothurOut("It took " + toString(time(NULL) - startTime) + " to calculate the distances for " + toString(numSeqs) + " sequences."); m->mothurOutEndLine();
+                       
+                       if (m->control_pressed) { outputTypes.clear(); m->mothurRemove(outputFile); return 0; }
+               }
+               
+               //set phylip file as new current phylipfile
+               string current = "";
+               itTypes = outputTypes.find("phylip");
+               if (itTypes != outputTypes.end()) {
+                       if ((itTypes->second).size() != 0) { current = (itTypes->second)[0]; m->setPhylipFile(current); }
+               }
+               
+               //set column file as new current columnfile
+               itTypes = outputTypes.find("column");
+               if (itTypes != outputTypes.end()) {
+                       if ((itTypes->second).size() != 0) { current = (itTypes->second)[0]; m->setColumnFile(current); }
+               }
+               
+               m->mothurOutEndLine();
+               m->mothurOut("Output File Name: "); m->mothurOutEndLine();
+               for (int i = 0; i < outputNames.size(); i++) {  m->mothurOut(outputNames[i]); m->mothurOutEndLine();    }
+               m->mothurOutEndLine();
+               
+
+               return 0;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "execute");
+               exit(1);
+       }
+}
+
+/**************************************************************************************************/
+void PairwiseSeqsCommand::createProcesses(string filename) {
+       try {
+        int process = 1;
+               processIDS.clear();
+        
+#if defined (__APPLE__) || (__MACH__) || (linux) || (__linux) || (__linux__) || (__unix__) || (__unix)
+               
+               
+               //loop through and create all the processes you want
+               while (process != processors) {
+                       int pid = fork();
+                       
+                       if (pid > 0) {
+                               processIDS.push_back(pid); 
+                               process++;
+                       }else if (pid == 0){
+                               if (output != "square") {  driver(lines[process].start, lines[process].end, filename + toString(getpid()) + ".temp", cutoff); }
+                               else { driver(lines[process].start, lines[process].end, filename + toString(getpid()) + ".temp", "square"); }
+                               exit(0);
+                       }else { 
+                               m->mothurOut("[ERROR]: unable to spawn the necessary processes."); m->mothurOutEndLine(); 
+                               for (int i=0;i<processIDS.size();i++) { int temp = processIDS[i]; kill (temp, SIGINT); }
+                               exit(0);
+                       }
+               }
+               
+               //parent do my part
+               if (output != "square") {  driver(lines[0].start, lines[0].end, filename, cutoff); }
+               else { driver(lines[0].start, lines[0].end, filename, "square"); }
+
+               
+               //force parent to wait until all the processes are done
+               for (int i=0;i<processIDS.size();i++) { 
+                       int temp = processIDS[i];
+                       wait(&temp);
+               }
+#else     
+        //////////////////////////////////////////////////////////////////////////////////////////////////////
+               //Windows version shared memory, so be careful when passing variables through the distanceData struct. 
+               //Above fork() will clone, so memory is separate, but that's not the case with windows, 
+               //that's why the distance calculator was moved inside of the driver to make separate copies.
+               //////////////////////////////////////////////////////////////////////////////////////////////////////
+               
+               vector<pairwiseData*> pDataArray; //[processors-1];
+               DWORD   dwThreadIdArray[processors-1];
+               HANDLE  hThreadArray[processors-1]; 
+               
+               //Create processor-1 worker threads.
+               for( int i=0; i<processors-1; i++ ){
+                       string extension = toString(i) + ".temp";
+
+                       // Allocate memory for thread data.
+                       pairwiseData* tempDist = new pairwiseData((filename+extension), align, "square", Estimators[0], countends, output, alignDB, m, lines[i+1].start, lines[i+1].end, match, misMatch, gapOpen, gapExtend, longestBase, i);
+                       pDataArray.push_back(tempDist);
+                       processIDS.push_back(i);
+                       
+                       if (output != "square") { hThreadArray[i] = CreateThread(NULL, 0, MyPairwiseThreadFunction, pDataArray[i], 0, &dwThreadIdArray[i]);  } 
+            else { hThreadArray[i] = CreateThread(NULL, 0, MyPairwiseSquareThreadFunction, pDataArray[i], 0, &dwThreadIdArray[i]);  }
+               }
+               
+               //do your part
+               if (output != "square") {  driver(lines[0].start, lines[0].end, filename, cutoff); }
+               else { driver(lines[0].start, lines[0].end, filename, "square"); }
+               
+               //Wait until all threads have terminated.
+               WaitForMultipleObjects(processors-1, hThreadArray, TRUE, INFINITE);
+               
+               //Close all thread handles and free memory allocations.
+               for(int i=0; i < pDataArray.size(); i++){
+                       CloseHandle(hThreadArray[i]);
+                       delete pDataArray[i];
+               }
+
+#endif
+        
+        //append and remove temp files
+               for (int i=0;i<processIDS.size();i++) { 
+                       m->appendFiles((filename + toString(processIDS[i]) + ".temp"), filename);
+                       m->mothurRemove((filename + toString(processIDS[i]) + ".temp"));
+               }
+        
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "createProcesses");
+               exit(1);
+       }
+}
+
+/**************************************************************************************************/
+/////// need to fix to work with calcs and sequencedb
+int PairwiseSeqsCommand::driver(int startLine, int endLine, string dFileName, float cutoff){
+       try {
+
+               int startTime = time(NULL);
+        
+        Alignment* alignment;
+        if(align == "gotoh")                   {       alignment = new GotohOverlap(gapOpen, gapExtend, match, misMatch, longestBase);                 }
+               else if(align == "needleman")   {       alignment = new NeedlemanOverlap(gapOpen, match, misMatch, longestBase);                                }
+               else if(align == "blast")               {       alignment = new BlastAlignment(gapOpen, gapExtend, match, misMatch);            }
+               else if(align == "noalign")             {       alignment = new NoAlign();                                                                                                      }
+               else {
+                       m->mothurOut(align + " is not a valid alignment option. I will run the command using needleman.");
+                       m->mothurOutEndLine();
+                       alignment = new NeedlemanOverlap(gapOpen, match, misMatch, longestBase);
+               }
+        
+        ValidCalculators validCalculator;
+        Dist* distCalculator;
+        if (countends) {
+            if (validCalculator.isValidCalculator("distance", Estimators[0]) == true) { 
+                if (Estimators[0] == "nogaps")                 {       distCalculator = new ignoreGaps();      }
+                else if (Estimators[0] == "eachgap")   {       distCalculator = new eachGapDist();     }
+                else if (Estimators[0] == "onegap")            {       distCalculator = new oneGapDist();      }
+            }
+        }else {
+            if (validCalculator.isValidCalculator("distance", Estimators[0]) == true) { 
+                if (Estimators[0] == "nogaps")         {       distCalculator = new ignoreGaps();                                      }
+                else if (Estimators[0] == "eachgap"){  distCalculator = new eachGapIgnoreTermGapDist();        }
+                else if (Estimators[0] == "onegap")    {       distCalculator = new oneGapIgnoreTermGapDist();         }
+            }
+        }
+               
+               //column file
+               ofstream outFile(dFileName.c_str(), ios::trunc);
+               outFile.setf(ios::fixed, ios::showpoint);
+               outFile << setprecision(4);
+               
+               if((output == "lt") && startLine == 0){ outFile << alignDB.getNumSeqs() << endl;        }
+               
+               for(int i=startLine;i<endLine;i++){
+                       if(output == "lt")      {       
+                               string name = alignDB.get(i).getName();
+                               if (name.length() < 10) { //pad with spaces to make compatible
+                                       while (name.length() < 10) {  name += " ";  }
+                               }
+                               outFile << name << '\t';        
+                       }
+                       
+                       for(int j=0;j<i;j++){
+                               
+                               if (m->control_pressed) { outFile.close(); delete alignment; delete distCalculator; return 0;  }
+                               
+                               if (alignDB.get(i).getUnaligned().length() > alignment->getnRows()) {
+                                       alignment->resize(alignDB.get(i).getUnaligned().length()+1);
+                               }
+                               
+                               if (alignDB.get(j).getUnaligned().length() > alignment->getnRows()) {
+                                       alignment->resize(alignDB.get(j).getUnaligned().length()+1);
+                               }
+                               
+                               Sequence seqI(alignDB.get(i).getName(), alignDB.get(i).getAligned());
+                               Sequence seqJ(alignDB.get(j).getName(), alignDB.get(j).getAligned());
+                               
+                               alignment->align(seqI.getUnaligned(), seqJ.getUnaligned());
+                               seqI.setAligned(alignment->getSeqAAln());
+                               seqJ.setAligned(alignment->getSeqBAln());
+
+                               
+                               distCalculator->calcDist(seqI, seqJ);
+                               double dist = distCalculator->getDist();
+                               
+                               if(dist <= cutoff){
+                                       if (output == "column") { outFile << alignDB.get(i).getName() << ' ' << alignDB.get(j).getName() << ' ' << dist << endl; }
+                               }
+                               if (output == "lt") {  outFile << dist << '\t'; }
+                       }
+                       
+                       if (output == "lt") { outFile << endl; }
+                       
+                       if(i % 100 == 0){
+                               m->mothurOut(toString(i) + "\t" + toString(time(NULL) - startTime)); m->mothurOutEndLine();
+                       }
+                       
+               }
+               m->mothurOut(toString(endLine-1) + "\t" + toString(time(NULL) - startTime)); m->mothurOutEndLine();
+               
+               outFile.close();
+        delete alignment;
+        delete distCalculator;
+               
+               return 1;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "driver");
+               exit(1);
+       }
+}
+/**************************************************************************************************/
+/////// need to fix to work with calcs and sequencedb
+int PairwiseSeqsCommand::driver(int startLine, int endLine, string dFileName, string square){
+       try {
+
+               int startTime = time(NULL);
+        
+        Alignment* alignment;
+        if(align == "gotoh")                   {       alignment = new GotohOverlap(gapOpen, gapExtend, match, misMatch, longestBase);                 }
+               else if(align == "needleman")   {       alignment = new NeedlemanOverlap(gapOpen, match, misMatch, longestBase);                                }
+               else if(align == "blast")               {       alignment = new BlastAlignment(gapOpen, gapExtend, match, misMatch);            }
+               else if(align == "noalign")             {       alignment = new NoAlign();                                                                                                      }
+               else {
+                       m->mothurOut(align + " is not a valid alignment option. I will run the command using needleman.");
+                       m->mothurOutEndLine();
+                       alignment = new NeedlemanOverlap(gapOpen, match, misMatch, longestBase);
+               }
+               
+        ValidCalculators validCalculator;
+        Dist* distCalculator;
+        if (countends) {
+            if (validCalculator.isValidCalculator("distance", Estimators[0]) == true) { 
+                if (Estimators[0] == "nogaps")                 {       distCalculator = new ignoreGaps();      }
+                else if (Estimators[0] == "eachgap")   {       distCalculator = new eachGapDist();     }
+                else if (Estimators[0] == "onegap")            {       distCalculator = new oneGapDist();      }
+            }
+        }else {
+            if (validCalculator.isValidCalculator("distance", Estimators[0]) == true) { 
+                if (Estimators[0] == "nogaps")         {       distCalculator = new ignoreGaps();                                      }
+                else if (Estimators[0] == "eachgap"){  distCalculator = new eachGapIgnoreTermGapDist();        }
+                else if (Estimators[0] == "onegap")    {       distCalculator = new oneGapIgnoreTermGapDist();         }
+            }
+        }
+
+               //column file
+               ofstream outFile(dFileName.c_str(), ios::trunc);
+               outFile.setf(ios::fixed, ios::showpoint);
+               outFile << setprecision(4);
+               
+               if(startLine == 0){     outFile << alignDB.getNumSeqs() << endl;        }
+               
+               for(int i=startLine;i<endLine;i++){
+                               
+                       string name = alignDB.get(i).getName();
+                       //pad with spaces to make compatible
+                       if (name.length() < 10) { while (name.length() < 10) {  name += " ";  } }
+                               
+                       outFile << name << '\t';        
+                       
+                       for(int j=0;j<alignDB.getNumSeqs();j++){
+                               
+                               if (m->control_pressed) { outFile.close(); delete alignment; delete distCalculator; return 0;  }
+                               
+                               if (alignDB.get(i).getUnaligned().length() > alignment->getnRows()) {
+                                       alignment->resize(alignDB.get(i).getUnaligned().length()+1);
+                               }
+                               
+                               if (alignDB.get(j).getUnaligned().length() > alignment->getnRows()) {
+                                       alignment->resize(alignDB.get(j).getUnaligned().length()+1);
+                               }
+                               
+                               Sequence seqI(alignDB.get(i).getName(), alignDB.get(i).getAligned());
+                               Sequence seqJ(alignDB.get(j).getName(), alignDB.get(j).getAligned());
+                               
+                               alignment->align(seqI.getUnaligned(), seqJ.getUnaligned());
+                               seqI.setAligned(alignment->getSeqAAln());
+                               seqJ.setAligned(alignment->getSeqBAln());
+                               
+                               distCalculator->calcDist(seqI, seqJ);
+                               double dist = distCalculator->getDist();
+                                                               
+                               outFile << dist << '\t'; 
+                       }
+                       
+                       outFile << endl; 
+                       
+                       if(i % 100 == 0){
+                               m->mothurOut(toString(i) + "\t" + toString(time(NULL) - startTime)); m->mothurOutEndLine();
+                       }
+                       
+               }
+               m->mothurOut(toString(endLine-1) + "\t" + toString(time(NULL) - startTime)); m->mothurOutEndLine();
+               
+               outFile.close();
+        delete alignment;
+        delete distCalculator;
+               
+               return 1;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "driver");
+               exit(1);
+       }
+}
+#ifdef USE_MPI
+/**************************************************************************************************/
+/////// need to fix to work with calcs and sequencedb
+int PairwiseSeqsCommand::driverMPI(int startLine, int endLine, MPI_File& outMPI, float cutoff){
+       try {
+               MPI_Status status;
+               int startTime = time(NULL);
+        
+        Alignment* alignment;
+        if(align == "gotoh")                   {       alignment = new GotohOverlap(gapOpen, gapExtend, match, misMatch, longestBase);                 }
+               else if(align == "needleman")   {       alignment = new NeedlemanOverlap(gapOpen, match, misMatch, longestBase);                                }
+               else if(align == "blast")               {       alignment = new BlastAlignment(gapOpen, gapExtend, match, misMatch);            }
+               else if(align == "noalign")             {       alignment = new NoAlign();                                                                                                      }
+               else {
+                       m->mothurOut(align + " is not a valid alignment option. I will run the command using needleman.");
+                       m->mothurOutEndLine();
+                       alignment = new NeedlemanOverlap(gapOpen, match, misMatch, longestBase);
+               }
+               
+        ValidCalculators validCalculator;
+        Dist* distCalculator;
+        if (countends) {
+            if (validCalculator.isValidCalculator("distance", Estimators[0]) == true) { 
+                if (Estimators[0] == "nogaps")                 {       distCalculator = new ignoreGaps();      }
+                else if (Estimators[0] == "eachgap")   {       distCalculator = new eachGapDist();     }
+                else if (Estimators[0] == "onegap")            {       distCalculator = new oneGapDist();      }
+            }
+        }else {
+            if (validCalculator.isValidCalculator("distance", Estimators[0]) == true) { 
+                if (Estimators[0] == "nogaps")         {       distCalculator = new ignoreGaps();                                      }
+                else if (Estimators[0] == "eachgap"){  distCalculator = new eachGapIgnoreTermGapDist();        }
+                else if (Estimators[0] == "onegap")    {       distCalculator = new oneGapIgnoreTermGapDist();         }
+            }
+        }
+
+               string outputString = "";
+               
+               for(int i=startLine;i<endLine;i++){
+       
+                       for(int j=0;j<i;j++){
+                               
+                               if (m->control_pressed) { delete alignment; delete distCalculator; return 0;  }
+                               
+                               if (alignDB.get(i).getUnaligned().length() > alignment->getnRows()) {
+                                       alignment->resize(alignDB.get(i).getUnaligned().length()+1);
+                               }
+                               
+                               if (alignDB.get(j).getUnaligned().length() > alignment->getnRows()) {
+                                       alignment->resize(alignDB.get(j).getUnaligned().length()+1);
+                               }
+                               
+                               Sequence seqI(alignDB.get(i).getName(), alignDB.get(i).getAligned());
+                               Sequence seqJ(alignDB.get(j).getName(), alignDB.get(j).getAligned());
+                               
+                               alignment->align(seqI.getUnaligned(), seqJ.getUnaligned());
+                               seqI.setAligned(alignment->getSeqAAln());
+                               seqJ.setAligned(alignment->getSeqBAln());
+                               
+                               distCalculator->calcDist(seqI, seqJ);
+                               double dist = distCalculator->getDist();
+                               
+                               if(dist <= cutoff){
+                                        outputString += (alignDB.get(i).getName() + ' ' + alignDB.get(j).getName() + ' ' + toString(dist) + '\n'); 
+                               }
+                       }
+                       
+                       if(i % 100 == 0){
+                               //m->mothurOut(toString(i) + "\t" + toString(time(NULL) - startTime)); m->mothurOutEndLine();
+                               cout << i << '\t' << (time(NULL) - startTime) << endl;
+                       }
+                       
+                        
+                       //send results to parent
+                       int length = outputString.length();
+
+                       char* buf = new char[length];
+                       memcpy(buf, outputString.c_str(), length);
+                       
+                       MPI_File_write_shared(outMPI, buf, length, MPI_CHAR, &status);
+                       outputString = "";
+                       delete buf;
+                       
+               }
+               delete alignment;
+        delete distCalculator;
+               return 1;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "driverMPI");
+               exit(1);
+       }
+}
+/**************************************************************************************************/
+/////// need to fix to work with calcs and sequencedb
+int PairwiseSeqsCommand::driverMPI(int startLine, int endLine, string file, unsigned long long& size){
+       try {
+               MPI_Status status;
+               
+               MPI_File outMPI;
+               int amode=MPI_MODE_CREATE|MPI_MODE_WRONLY; 
+
+               char filename[1024];
+               strcpy(filename, file.c_str());
+
+               MPI_File_open(MPI_COMM_SELF, filename, amode, MPI_INFO_NULL, &outMPI);
+
+               Alignment* alignment;
+        if(align == "gotoh")                   {       alignment = new GotohOverlap(gapOpen, gapExtend, match, misMatch, longestBase);                 }
+               else if(align == "needleman")   {       alignment = new NeedlemanOverlap(gapOpen, match, misMatch, longestBase);                                }
+               else if(align == "blast")               {       alignment = new BlastAlignment(gapOpen, gapExtend, match, misMatch);            }
+               else if(align == "noalign")             {       alignment = new NoAlign();                                                                                                      }
+               else {
+                       m->mothurOut(align + " is not a valid alignment option. I will run the command using needleman.");
+                       m->mothurOutEndLine();
+                       alignment = new NeedlemanOverlap(gapOpen, match, misMatch, longestBase);
+               }
+        
+        ValidCalculators validCalculator;
+        Dist* distCalculator;
+        if (countends) {
+            if (validCalculator.isValidCalculator("distance", Estimators[0]) == true) { 
+                if (Estimators[0] == "nogaps")                 {       distCalculator = new ignoreGaps();      }
+                else if (Estimators[0] == "eachgap")   {       distCalculator = new eachGapDist();     }
+                else if (Estimators[0] == "onegap")            {       distCalculator = new oneGapDist();      }
+            }
+        }else {
+            if (validCalculator.isValidCalculator("distance", Estimators[0]) == true) { 
+                if (Estimators[0] == "nogaps")         {       distCalculator = new ignoreGaps();                                      }
+                else if (Estimators[0] == "eachgap"){  distCalculator = new eachGapIgnoreTermGapDist();        }
+                else if (Estimators[0] == "onegap")    {       distCalculator = new oneGapIgnoreTermGapDist();         }
+            }
+        }
+
+               
+               string outputString = "";
+               size = 0;
+               
+               if(startLine == 0){     outputString += toString(alignDB.getNumSeqs()) + "\n";  }
+               
+               for(int i=startLine;i<endLine;i++){
+                               
+                       string name = alignDB.get(i).getName();
+                       if (name.length() < 10) { //pad with spaces to make compatible
+                               while (name.length() < 10) {  name += " ";  }
+                       }
+                       outputString += name + "\t";    
+                       
+                       for(int j=0;j<i;j++){
+                               
+                               if (m->control_pressed) { delete alignment; delete distCalculator; return 0;  }
+                               
+                               if (alignDB.get(i).getUnaligned().length() > alignment->getnRows()) {
+                                       alignment->resize(alignDB.get(i).getUnaligned().length()+1);
+                               }
+                               
+                               if (alignDB.get(j).getUnaligned().length() > alignment->getnRows()) {
+                                       alignment->resize(alignDB.get(j).getUnaligned().length()+1);
+                               }
+                               
+                               Sequence seqI(alignDB.get(i).getName(), alignDB.get(i).getAligned());
+                               Sequence seqJ(alignDB.get(j).getName(), alignDB.get(j).getAligned());
+                               
+                               alignment->align(seqI.getUnaligned(), seqJ.getUnaligned());
+                               seqI.setAligned(alignment->getSeqAAln());
+                               seqJ.setAligned(alignment->getSeqBAln());
+                               
+                               distCalculator->calcDist(seqI, seqJ);
+                               double dist = distCalculator->getDist();
+                               
+                               outputString += toString(dist) + "\t"; 
+                       }
+                       
+                       outputString += "\n"; 
+                       
+                       //send results to parent
+                       int length = outputString.length();
+                       char* buf = new char[length];
+                       memcpy(buf, outputString.c_str(), length);
+                       
+                       MPI_File_write(outMPI, buf, length, MPI_CHAR, &status);
+                       size += outputString.length();
+                       outputString = "";
+                       delete buf;
+               }
+               
+               MPI_File_close(&outMPI);
+        delete alignment;
+        delete distCalculator;
+               
+               return 1;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "driverMPI");
+               exit(1);
+       }
+}
+/**************************************************************************************************/
+/////// need to fix to work with calcs and sequencedb
+int PairwiseSeqsCommand::driverMPI(int startLine, int endLine, string file, unsigned long long& size, string square){
+       try {
+               MPI_Status status;
+               
+               MPI_File outMPI;
+               int amode=MPI_MODE_CREATE|MPI_MODE_WRONLY; 
+
+               char filename[1024];
+               strcpy(filename, file.c_str());
+
+               MPI_File_open(MPI_COMM_SELF, filename, amode, MPI_INFO_NULL, &outMPI);
+               
+               Alignment* alignment;
+        if(align == "gotoh")                   {       alignment = new GotohOverlap(gapOpen, gapExtend, match, misMatch, longestBase);                 }
+               else if(align == "needleman")   {       alignment = new NeedlemanOverlap(gapOpen, match, misMatch, longestBase);                                }
+               else if(align == "blast")               {       alignment = new BlastAlignment(gapOpen, gapExtend, match, misMatch);            }
+               else if(align == "noalign")             {       alignment = new NoAlign();                                                                                                      }
+               else {
+                       m->mothurOut(align + " is not a valid alignment option. I will run the command using needleman.");
+                       m->mothurOutEndLine();
+                       alignment = new NeedlemanOverlap(gapOpen, match, misMatch, longestBase);
+               }
+               
+        ValidCalculators validCalculator;
+        Dist* distCalculator;
+        if (countends) {
+            if (validCalculator.isValidCalculator("distance", Estimators[0]) == true) { 
+                if (Estimators[0] == "nogaps")                 {       distCalculator = new ignoreGaps();      }
+                else if (Estimators[0] == "eachgap")   {       distCalculator = new eachGapDist();     }
+                else if (Estimators[0] == "onegap")            {       distCalculator = new oneGapDist();      }
+            }
+        }else {
+            if (validCalculator.isValidCalculator("distance", Estimators[0]) == true) { 
+                if (Estimators[0] == "nogaps")         {       distCalculator = new ignoreGaps();                                      }
+                else if (Estimators[0] == "eachgap"){  distCalculator = new eachGapIgnoreTermGapDist();        }
+                else if (Estimators[0] == "onegap")    {       distCalculator = new oneGapIgnoreTermGapDist();         }
+            }
+        }
+        
+               string outputString = "";
+               size = 0;
+               
+               if(startLine == 0){     outputString += toString(alignDB.getNumSeqs()) + "\n";  }
+               
+               for(int i=startLine;i<endLine;i++){
+                               
+                       string name = alignDB.get(i).getName();
+                       if (name.length() < 10) { //pad with spaces to make compatible
+                               while (name.length() < 10) {  name += " ";  }
+                       }
+                       outputString += name + "\t";    
+                       
+                       for(int j=0;j<alignDB.getNumSeqs();j++){
+                               
+                               if (m->control_pressed) {  delete alignment; return 0;  }
+                               
+                               if (alignDB.get(i).getUnaligned().length() > alignment->getnRows()) {
+                                       alignment->resize(alignDB.get(i).getUnaligned().length()+1);
+                               }
+                               
+                               if (alignDB.get(j).getUnaligned().length() > alignment->getnRows()) {
+                                       alignment->resize(alignDB.get(j).getUnaligned().length()+1);
+                               }
+                               
+                               Sequence seqI(alignDB.get(i).getName(), alignDB.get(i).getAligned());
+                               Sequence seqJ(alignDB.get(j).getName(), alignDB.get(j).getAligned());
+                               
+                               alignment->align(seqI.getUnaligned(), seqJ.getUnaligned());
+                               seqI.setAligned(alignment->getSeqAAln());
+                               seqJ.setAligned(alignment->getSeqBAln());
+                               
+                               distCalculator->calcDist(seqI, seqJ);
+                               double dist = distCalculator->getDist();
+                               
+                               outputString += toString(dist) + "\t"; 
+                       }
+                       
+                       outputString += "\n"; 
+
+                       //send results to parent
+                       int length = outputString.length();
+                       char* buf = new char[length];
+                       memcpy(buf, outputString.c_str(), length);
+                       
+                       MPI_File_write(outMPI, buf, length, MPI_CHAR, &status);
+                       size += outputString.length();
+                       outputString = "";
+                       delete buf;
+               }
+               
+               MPI_File_close(&outMPI);
+               
+        delete alignment;
+               return 1;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "PairwiseSeqsCommand", "driverMPI");
+               exit(1);
+       }
+}
+#endif
+/**************************************************************************************************/
+