1. An architecture for interconnecting multiple PCI Express (PCIE) based processing systems each having a PCI root complex and at least a PCIE peripheral unit as an end poit enabled for system interconnection (PCIE_I) and transferring data, a network switch having multiple ports enabled for using PCIE links and using PCIE protocol for interconnection, where in each of the plurality of the PCIE based processing systems are coupled through its at least one PCIE_I to one of the multiple port of the network switch, providing a one to one connection between the at least a PCIE_I and the network port, making an interconnected cluster of PCIE based processing systems, the network switch being configured to enable transfer of data between any of a first connected PCIE_I of the multiple PCIE based processing systems to any other of the connected PCIE_I of the multiple PCIE based processing systems.