A system, method and computer program product for distributing task assignments on a computer network comprising a client grid having at least one server coupled to at least one client node and a plurality of client computers coupled to the client node through a plurality of monitoring agents. Each monitoring agent collects data regarding the resources a particular client computer makes available to the grid and transmits the data to the grid server when the client computer requests a grid task. The system generates a resource probability distribution based on the historical computing resource data and employs a scheduling algorithm to distribute grid tasks to the client computers using at least the probability distribution.