Patent ID: 8386624

Claim:
A network system comprising: N (N=three or more) number of node groups each of which has N−1 number of network adapters; and a cross bar switch which connects the corresponding network adapters of each of said node groups, the corresponding network adapters being predetermined, wherein one node group of said N number of node groups comprises a CPU (Central Processing Unit) that divides data to be transferred to a plurality of other node groups into N number of data, and instructs parallel transfer of each of N−1 number of data except one data among said divided N number of data to said N−1 number of network adapters from each network adapter of said one node group to the corresponding network adapter of said plurality of other node groups via said cross bar switch respectively, and wherein each of said plurality of other node groups, which received said divided data, parallel transfers said received divided data to said plurality of other node groups, which have not received said divided data, from each network adapter of said other node groups to the corresponding network adapter of said plurality of other node groups via said cross bar switch respectively, and wherein said one node group parallel transfers said one data to said plurality of other node groups from each network adapter of said one node group to the corresponding network adapter of said plurality of said other node groups via said cross bar switch respectively.