Method and device in order to guarantee the consistency of information between the shields and other memoires of a system for processing the information working in multiprocessing

摘要

In an arrangement for ensuring the coherence of data or information in a multiprocessing system, which data or information is recorded in a memory assembly formed by a central memory (MC) and at least two caches stores (C1, C2) associated with respective processors (P1, P2) forming part of the system, when one of the processors belonging to the system alters or updates an item of information, this updated item of information is stored at a single location in the memory assembly, the original non- updated item of information is invalidated in any cache stores in which it may also be present, and any updated item of information is maintained unique in the memory assembly of the system. IMAGE