CACHE CONTROLLER, CACHE CONTROL METHOD, COMPUTER SYSTEM

摘要

PROBLEM TO BE SOLVED: To eliminate possibility that the cash hit ratio of a task is lowered owing to processing of another task in a computer system having a microprocessor which performs parallel processing of a plurality of tasks, a cache memory and a main memory. SOLUTION: A cache controller 1 is provided with: an area management part 12 which manages tasks to which the microprocessor applies the parallel processing and the areas formed by dividing the memory area of a cache memory 2 by associating the tasks and the areas; an address decomposition part 14 which accepts and decomposes an address transmitted from the microprocessor in a process of a certain task of the microprocessor; and a caching part which acquires from the main memory a group of data by the unit of blocks including data existing in the accepted address and stores the group of data in an area associated with the tasks when a tag generated by address decomposition is not associated and recorded in a cache directory 17. COPYRIGHT: (C)2004,JPO