Abstract:The construction of the domestic information system at present the country continues to advance, the core of the domestic computer system due to the low degree of technological maturity, market promotion and other reasons later exposed, low reliability, poor stability, led directly to the system function cannot be successfully applied. The parallel redundant architecture research on localization of computer system, the hardware and software design of computer system architecture, application and conversion mechanism method of cache coherence architecture, high-speed interconnection bus and three state, domestic CPU parallel computer system based on redundancy, can effectively eliminate the backup computer system on duty when switching the switch time delay the problem of data loss and switching process. Through the test, the system can complete the fault-tolerant computer system of CPU processor and the function of bridge chip fault modes, and ensure the completeness and timeliness of information data, effectively improving the working reliability and stability of the computer system in equipment.