Study And Implementation Of Science And Engineering Computing Grid Application

With the rapid improvement of the science and technology, more and more magnitude of computation is needed by a lot of scientific computation and complicated application systems, such as High Energy Physics, Bioinformatics, Molecular Modeling , and Numerical Weather Prediction , The single computer even the huge computer can hardly satisfy the increasing requirements which people need. At the same time, with the increasing of the precision of computation, the amount of the data which users generate when they use grid system goes up to the level of Terabyte even PetaByteo So, the users also need a circumstance which can satisfy the requirement of computation and access the data they need at anytime they want, which make them establish, access, transfer , copy all kinds of data file conveniently..Grid is a computational infrastructure. It connects all kinds of distributed and heterogeneous computational sources with the high-speed network to complete computational problems together. Grid provides the method for solving the super-large and super-complicated compute-intensive or data-intensive problems. The important purpose of implementing grid-computing is to implementing the unified description method for the distributed and heterogeneous resources . It envelopes the computational programs as a service and managing the job which uses submit, stores and manages the data which produced by users when they use the grid, and establishes a unified grid portal. Users can use grid service and get grid service by the familiar user interface , the consistent operate method, the convenient access mechanism . So the problem of complication of using grid can be resolved .In this paper we take the large-scale scientific and engineering computing as...