Method and system for offloading a computation to other computing units in the same device or to a server on a network based upon a computing time and a power consumption of each of the computing units and the server

A computing system, comprising:

• a network interface, connecting to at least a server;
• a memory wherein an effect factor table is stored;
• a plurality of computing units;
• and
• an offloading decision unit coupled to the network interface, the memory and the computing units to receive a computing mission,
• wherein the offloading decision unit obtains a plurality of static effect factors from the effect factor table,
• wherein the offloading decision unit collects a plurality of dynamic effect factors,
• wherein the offloading decision unit generates a power consumption and a computing time of each of the computing units and each of the servers according to the dynamic effect factors and the static effect factors, wherein the power consumption and the computing time are what each of the computing units and each of the servers consume when executing the computing mission,
• wherein the offloading decision unit calculates a cost value of each of the computing units and each of the servers executing the computing mission according to the power consumption and the computing time,
• wherein the offloading decision unit determines a target unit to execute the computing mission according to the cost values, wherein the target unit is either one of the computing units or one of the servers,
• wherein the offloading decision unit transmits the computing mission to the target unit wherein the computing mission is executed,
• wherein the offloading decision unit is further configured to calculate the cost value according to equations (1), (2) and (3),
• εTP=({circumflex over (T)}p−{circumflex over (T)}cpu)/Tcpu (1)
• εEP=(Êp−Êcpu)/Êcpu (2)
• CP=α·εTP+(1−α)·εEP (3)
• wherein cpu is a main computing unit of the computing units, p is a comparative computing unit, the comparative computing unit is one of the computing units or one of the servers, CP is the cost value of the comparative computing unit, {circumflex over (T)}p is the computing time that the comparative computing unit consumes when executing the computing mission, Êp is the power consumption that the comparative computing unit consumes when executing the computing mission, {circumflex over (T)}cpu is the computing time that the main computing unit consumes when executing the computing mission, Êcpu is the power consumption that the main computing consumes when executing the computing mission, α is a real number which is equal to or greater than 0 and less than or equal to 1,
• wherein the offloading decision unit is further configured to set the comparative computing unit with the smallest cost value as the target unit.