| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for distributing loads in a distributed calculation system. SOLUTION: The distributed calculation system comprises a user terminal 200; a calculation server 400 having a measuring part that measures information about performance (communication performance, calculation performance) and sends this information along with the name of a data file to a data server; a data server 300 having a measurement information control part for controlling information about the performance as a measurement information table, a performance evaluating part for evaluating the performance using the measurement information table, a data file selecting part for selecting the data file to be replicated upon the detection of performance degradation, and a replica creating part for creating a replica for a replica location data server; and a system control server 500 having a replica location server selecting part. COPYRIGHT: (C)2005,JPO&NCIPI
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