A system is provided. The system includes a computing device by which first and second commands are inputted, first and second resources disposed in communication with the computing device to be receptive of the first command and responsive to the first command with first and second energy demands in first and second response times, respectively and a managing unit. The managing unit is disposed in communication with the computing device to be receptive of the first and second commands and with the first and second resources to allocate tasks associated with the first command to one of the first and second resources. The tasks are allocated in accordance with the second command and the second command is based on the first and second energy demands and the first and second response times.