Patent ID: 8275948

Claim:
A memory sharing system comprising: a plurality of computers; a main or primary memory including a plurality of memory areas assigned to respective said computers, said memory areas each being capable of loading thereon a program for operating a corresponding one of said computers; a memory-use-information memory area that stores therein association of a program ID of a loaded program with one of said memory areas loading said loaded program; a memory-use-information retrieval section that judges, upon issuing of a memory reservation request identifying a specific program from one of said computers, whether or not a specific program ID specifying said specific program is stored in said memory-use-information memory area; and a memory reservation section that allows, if said memory-use-information retrieval section judges existence of said specific program ID in said memory-use-information memory area, one of said memory areas loading thereon said specific program to be shared simultaneously among said plurality of computers, said plurality of computers simultaneously sharing said one of said memory areas.