Transaction mechanism design in decentralized computational market

Based on Utility and Mechanism Design theory, this paper describes grid resources trade and allocation mechanism in Decentralized Computational Market, focusing on the design of double auction and aggregate market mechanism. Double auction mechanism employs decentralized architecture in decision making. The price fluctuates according to the wave of supply & demand of the market and the participants´ bid strategy. Comparatively, there has little participants´ influence in aggregate market mechanism; the price is determined by the central price setup system. Although presenting higher performance, aggregate market mechanism sacrifices interest of the bargainers. The simulations of single type commodity (CPU slices) market illustrate validity of the two kinds of trade mechanism. Comparing analysis is explicated from the view of transaction price, deal amount and the utility increment.