Ethernet-based Embedded Parallel Computing System Of Data Exchange And Application Analysis

At present, with the development of science and technology, a lot of industries and departments will have a great deal of data to be processed.Only to rely on a single processor not only waste of time, but also reduce the efficiency of work.At this time parallel computing system will come into being. Parallel computing system can give full play to its performance.Internal communication of parallel computing system is a key.Their internal communications including host and slave transfer of command from the control of the machine.Between the slave data transmission,how to deal with these communication coordination problems.It is the key to efficient operation of the system.So the research of these problems has far-reaching significance and important value of application.In this paper a detailed analysis of the functions and disadvantages of the Ethernet protocol.On the current network structure and the advantages and disadvantages are analyzed.Parallel computing system uses a star structure. The Ethernet driver in detail the preparation, the maximum shortening the communication time.Use the IEEE1588protocol for clock synchronization of the entire system, measurement clock synchronization error. Finally, by dividing the dynamic time slot, to solve the uncertainty of data transmission in the Ethernet, real-time per. Finally, to test the performance of the various aspects of the system.Large number of measurement results show, our system clock synchronization precision has reached a very high accuracy. With a lot of frame of data measured by real-time performance, the measurement results show that the real-time performance of the system is to achieve the requirements of parallel computing. In the system frame loss ratio.The correct rate of actual data, the communication efficiency of the measurement results show that the formation of the parallel computing system.We have been able to reach the requirements.