| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiprocessor configuration information processing apparatus that can further increase the throughput of read requests. SOLUTION: A system controller comprises a tag copy part for holding copies of tag information stored in cache memories, a plurality of write queues for storing write requests, and a store buffer for storing an arbitration result of the plurality of write requests stored in the plurality of write queues. When a read request is input by one of a plurality of processor devices, if the tag information included in the cache memories and the tag information included in the tag copy part are asynchronous, the plurality of write queues are searched for a write request input by another processor device different from the one processor device to an address corresponding to the read request, and if there is such an input in any of the plurality of write queues, data included in the write request to the address corresponding to the read request is returned. COPYRIGHT: (C)2006,JPO&NCIPI
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