std::vector<MPI_Request>* myreqqs = new std::vector<MPI_Request>();
std::vector<MPI_Request>::iterator iter = reqqs->begin();
while (iter != reqqs->end()){
std::vector<MPI_Request>* myreqqs = new std::vector<MPI_Request>();
std::vector<MPI_Request>::iterator iter = reqqs->begin();
while (iter != reqqs->end()){