Abstract: Disclosed is that centralized control server communicatively coupled with a plurality of local terminals, allows resources of the terminals to be used efficiently with sharing resources among the terminals. The centralized control server includes: information gathering unit that gathers information including current available computing resources and weight values from the plurality of local terminals, the weight value representing current processing demand at the local terminal; decision unit that calculates a resource requirement at each local terminal based on the weight value thereof, and calculates a gap between the resource requirement calculated and the current available computing resource gathered with the information gathering unit at each local terminal; and resource reservation unit that reserves an additional computing resource for a local terminal having a widest gap among the plurality of local terminals from another local terminal with a narrowest gap among the plurality of local terminals.