City University of Hong Kong

Jing Fu

Jun Guo

Moshe Zukerman

Wing Ming Eric Wong

William Morgan

A method for operating a server farm with a plurality of servers operably connected with each other includes the steps of: sorting the plurality of servers according to a respective energy efficiency value associated with each of the plurality of servers; defining a virtual server by selectively joining two or more of the servers with the highest energy efficiency values; receiving a job request of a computational task to be handled by the server farm; and assigning the computational task to one of the plurality of servers for processing based on a job assignment policy, the job assignment policy being arranged to give preference to assigning the computational task to the servers of the virtual server for processing so as to maximize an energy efficiency of the server farm.

System and method for operating a server farm

A method for operating a server farm with a plurality of servers operably connected with each other includes: receiving a job request of a computational task to be handled by the server farm; determining, from the plurality of servers, one or more servers operable to accept the job request; determining a respective effective energy efficiency value associated with at least the one or more servers; and assigning the computational task to a server with the highest effective energy efficiency value. The effective energy efficiency value is defined by a service rate of the respective server divided by a difference between an energy consumption rate value when the respective server is busy and an energy consumption rate value when the respective server is idle. The present invention also relates to a server farm operated by the method.

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Hong Kong, China

Jing Fu