Patent ID: 7380102

Claim:
A method of data processing in a data processing system including a first processing node containing a plurality of first processing units and a second processing node containing a plurality of second processing units, said method comprising: coupling said plurality of first processing units to each other; coupling said plurality of second processing units to each other; coupling said first processing node and said second processing node such that each of said plurality of first processing units is coupled to a respective one of said plurality of second processing units in said second processing node by a respective one of a plurality of point-to-point links, wherein said coupling of said first processing node and said second processing node includes: coupling a first processing unit in said first processing node to a fourth processing unit in said second processing node by a first point-to-point link; coupling a second processing unit in said first processing node to a fifth processing unit in said second processing node by a second point-to-point link; and coupling a third processing unit in said first processing node to a sixth processing unit in said second processing node by a third point-to-point link; wherein: said plurality of first processing units includes a node master processing unit and at least one node leaf processing unit; said plurality of second processing units includes a remote hub processing unit and at least one remote leaf processing unit; and said method further comprises: said node master processing unit broadcasting a request to each node leaf processing unit and to said remote hub processing unit; said remote hub processing unit broadcasting said request to each remote leaf processing unit; and said node master processing unit broadcasting a combined response for said request to each node leaf processing unit, remote hub processing unit and remote leaf processing unit based upon partial responses for said request received by said node master processing unit.