A method for controlling a cache - memory in a multiprocessor system and a multiprocessor system

摘要

PROBLEM TO BE SOLVED: To attain the dynamic switching of a cache control protocol without touching any structural body indicating the attribute of an area being the destination of access such as a segment describer or a page describer. ;SOLUTION: Plural processors 1 and 2 equipped with each cache memory 11 and 12 constitute a multiprocessor system sharing a main storage 3 through a system bus 4. Each processor 1 and 2 is provided with module detecting means 13 and 23 for detecting the execution of modules for performing access to a shared memory area on the main storage 3. Memory access to be performed in the modules detected by the module detecting means 13 and 23 is controlled by a store-through system cache control protocol for updating the main storage 3 at the same time as the update of the cache memories 11 and 12, and memory access to be performed in the other modules is controlled by a store-in system cache control protocol not for updating the main storage 3 at the time of the update of the cache memories 11 and 21.;COPYRIGHT: (C)2000,JPO