Exascale systems are the concept of HPC systems that able to perform one exaflop (10 18 floating-point operations) per second in a dynamic and interactive environment. As the traditional HPC systems, the major challenge of this system is load balancing. Providing load balancing in dynamic and interactive nature requires a model which handles dynamic and interactive events and allows to manage load distribution over the system. It strongly depends on the distribution degree of the system. This paper defined a new model of load flow while imbalance occurred in the node of a fully distributed Exascale system.