A computing program and apparatus for controlling computing resources, and a distributed processing system, which realize determining a computing node to be allocated to a computing task, with taking a time required for changing the state of running software into consideration. A node information acquisition unit continuously acquires and stores environment information indicating running software from computing nodes in a node information memory. A request acceptor accepts a computing request including environment condition information specifying software necessary for execution of a computing task. A node selector compares the environment information of each computing node with the environment condition information to preferentially select a computing node that requires the least software to start, as a commuting node to be allocated. A node controller controls the selected computing node to start the necessary software and then execute the computing task.