std::vector<int> lowerLevelNodesNumber;
std::vector<int> upperLevelNodesNumber;
std::vector<int> lowerLevelPortsNumber;
std::vector<FatTreeNode*> nodes;
std::map<std::pair<int,int>, FatTreeLink*> links;
std::vector<int> lowerLevelNodesNumber;
std::vector<int> upperLevelNodesNumber;
std::vector<int> lowerLevelPortsNumber;
std::vector<FatTreeNode*> nodes;
std::map<std::pair<int,int>, FatTreeLink*> links;