A computing system may be configured to receive a plurality of computing tasks for execution. The computing system may determine a first configuration setting for a first computing task and a second configuration setting, which is different from the first configuration setting, for a second computing task. A first computing node and a second computing node of the computing system may be booted according to the first and second configuration settings, and loaded with the first and second computing tasks for execution, respectively. After the first computing task finishes on the first computing node, the computing system may determine whether another computing task associated with the first configuration setting has not be executed, and when there is no such computing task remaining unexecuted, the computing system may reboot the first computing node according to a third configuration setting and load a third computing task into the first computing node for execution.