| 摘要 |
PURPOSE:To shorten the duration of a wait state and to improve ability in processing, by reducing the contention occurring to a storage device requested for read and write by plural processors. CONSTITUTION:When the processors 10, 20, and 30 send requests to write to storage modules 13, 23, and 33, the contents of storage modules 21, 32, 12, and 11 permitted only to be read are rewritten into the same value through control circuits 16, 26, and 36. Then, the contents of all addresses of the storage modules are set to an initial value. Then, the processors 10, 20, and 30 carry on individual processing. If a request to write is generated during the processing, the modules 13, 23, and 33 permitted to be written and the modules 21, 32, 12, and 11 permitted only to be written have the same contents. Consequently, the processor 10 sends a request to read to the module 12 to request a read of the storage device 23 of the processor 20 without causing any contention. |
