Multiple-execution method of multiple-version programs and computer system therefor

摘要

A distributed processing system includes a plurality of processors (11, 12, 13, 14) connected through a network (1), at least two first processors (12, 13) executes multiple-version programs (52a, 52b) which perform the same function, and messages (520a, 520b) which contain data outputted as execution results of the programs and attribute information indicating the versions of the executed programs are sent from the first processors (12, 13) to the network. The messages containing the results of processing by the multiple-version programs sent from the first processors (12, 13) are received by a second processor (14), which selects one message from the received messages based on the attribute information contained in the received messages and executes a program in the second processor (14) by using the data contained in the selected message.