Patent ID: 7653738

Claim:
A network management method that manages an interconnection network of a parallel computer system in which switch devices for computer are provided to a plurality of computers, respectively, a predetermined number of physical lines for the switch device for computer are bound to form a logical line, and the physical lines forming the logical line interconnect the other switch devices for computer via a plurality of switch devices for relay, the network management method comprising: a data transmission speed obtaining step in which a data transmission speed required among the computers is obtained; a switch shutting-off step in which, when the data transmission speed required among the computers is judged to be lower than a line transmission speed determined by the number of physical lines for any switch device for relay, power of the whole switch device for relay that has been judged is turned off to shut off the switch device for relay from the interconnection network; and a switch resetting step in which, when a data transmission speed after the shutting-off is judged to be higher than the line transmission speed determined by the number of physical lines for the switch device for relay in the shutting-off state, power of the whole switch device for relay in the shutting-off state is turned on to allow the switch device for relay to return to the interconnection network.