Study on Error-Detecting Approach for Fault Tolerance Recomputing Oriented Parallel Digital Terrain Analysis

In recent years, the research of parallel digital terrain analysis has become a hot spot. Using the parallel computing technology to solve data intensive problems, and it has become a development trend in digital terrain analysis. On the other hand, with the development of hardware technology and new applications, how to ensure the reliability of the computing results is a one of the key problems. We can improve the system´s ability to provide the right service by adopting fault tolerance technology properly. The paper proposes a parallel error-detecting approach which is based on a mixed mode of shared memory and distributed memory. By adopting the parallel comparison, it can improve the efficiency of fault tolerance recomputing. According to the error-detecting analysis of slope algorithm, it proves the effectiveness of error-detecting approach based on fault-tolerant recomputing and achieves minor overhead.