Change the way it measure executing time. Add mpi barrier before starting and before ending.

Tests/GroupTree/testBlockedChebyshev.cpp

@@ -122,7 +122,7 @@ int main(int argc, char* argv[]){
 
     timer.tic();
     groupalgo.execute();
-    std::cout << "Kernel executed in in " << timer.tacAndElapsed() << "s\n";
+    std::cout << "Average executed in in " << timer.tacAndElapsed() << "s\n";
 
     // Validate the result
     if(FParameters::existParameter(argc, argv, LocalOptionNoValidate.options) == false){

Tests/GroupTree/testBlockedImplicitAlgorithm.cpp

@@ -159,6 +159,7 @@ int main(int argc, char* argv[]){
     // Run the algorithm
     GroupKernelClass groupkernel;
     GroupAlgorithm groupalgo(&groupedTree,&groupkernel, distributedMortonIndex);
+	mpiComm.global().barrier();
 	FTic timerExecute;
 	groupalgo.execute();
 	mpiComm.global().barrier();

Tests/GroupTree/testBlockedImplicitChebyshev.cpp

@@ -138,6 +138,7 @@ int main(int argc, char* argv[]){
     const MatrixKernelClass MatrixKernel;
     GroupKernelClass groupkernel(NbLevels, loader.getBoxWidth(), loader.getCenterOfBox(), &MatrixKernel);
     GroupAlgorithm groupalgo(&groupedTree,&groupkernel, distributedMortonIndex);
+	mpiComm.global().barrier();
 	FTic timerExecute;
 	groupalgo.execute(operationsToProceed);
 	mpiComm.global().barrier();

Tests/GroupTree/testBlockedMpiAlgorithm.cpp

@@ -147,6 +147,7 @@ int main(int argc, char* argv[]){
     // Run the algorithm
     GroupKernelClass groupkernel;
     GroupAlgorithm groupalgo(mpiComm.global(), &groupedTree,&groupkernel);
+	mpiComm.global().barrier();
 	FTic timerExecute;
     groupalgo.execute();
     mpiComm.global().barrier();

Tests/GroupTree/testBlockedMpiChebyshev.cpp

@@ -168,6 +168,7 @@ int main(int argc, char* argv[]){
         GroupKernelClass groupkernel(TreeHeight, loader.getBoxWidth(), loader.getCenterOfBox(), &MatrixKernel);
         // Run the algorithm
         GroupAlgorithm groupalgo(mpiComm.global(), &groupedTree,&groupkernel);
+		mpiComm.global().barrier();
         timer.tic();
         groupalgo.execute();
 		mpiComm.global().barrier();