The Use Of Fuzzy Judgement In The Grid Performance's Evaluation

As the improvement of the Grid technology, there are more and more Grid service computing node taking the same function in Internet. How to choose a best performance computing node to give to the user becomes a very challenging subject. With the best one, the user only needs to spend little time for getting the result. But as a new computing environment, grid is much more complicated then the distributed system, it is very hard to evaluate the performance of gird service with a lot of new challenge.This paper uses the Fuzzy Judgement Algorithm to evaluate the Grid performance. Basing on Analyzing the Fuzzy sets theory, considering the character of performance evaluation, Writer developed a grid performance's Fuzzy Judgement system belongs to DIS. After collecting data of Grid performance, the system analyses the data, gets the set of performance properties and the set of Fuzzy number, finally computes fuzzy matrix to get the result of evaluation, chooses the grid service which has the best performance to provide the computing service to the customer. This paper definds a lot of performance evaluation properties. And give out a new way for getting the Fuzzy number from analyzing the performance data. For dealing with the problem about the efficiency, the paper improves the algorithm of Fuzzy Judgement. Making it fit for the grid service's evaluation.At last, I make an experiment to check out whether the system can work correctly or not. And the data describes that the Fuzzy Judgement Algorithm dose work on the evaluation of performance about the grid service computing node, it can find the computing node with the best performance.