Method of coherent management of exchange between levels of a hierarchical memory of at least three levels

摘要

The method applies to exchanges between levels of a hierarchy of memories including at least one intermediate level of the hierarchy, linked to a higher level of the hierarchy and to a lower level of the hierarchy, each level of the hierarchy being divided into memories (3, 5, 6) themselves divided into blocks (10) containing information (11) associated with addresses (Ad), the blocks of the memories of the higher level and of the intermediate level of the hierarchy containing copies of the information held in blocks with corresponding addresses of the lower level of the hierarchy, and consists, when modifying an information item in a block (10.32) of a memory of the higher level of the hierarchy, in invalidating at least some of the information at the corresponding addresses of other memories of the higher level of the hierarchy, and in managing an update or an invalidation of the information at the corresponding addresses of the intermediate level and of the lower level of the hierarchy on the basis of a utility of the update. IMAGE