DIRECTORY STORAGE METHOD AND QUERY METHOD, AND NODE CONTROLLER

摘要

The present invention discloses a directory storage method and a directory storage node controller. The method includes: obtaining, by a node controller NC in a local node, a storage address of a data block in a CPU in the local node, where the data block is read by a remote node; determining first content and second content that are respectively located in a first specific bit and a second specific bit of the storage address; determining, according to the first content and from each preset storage space used for storing a directory, a storage space in which an addressing address matches the first content; and correspondingly storing the second content and the directory in the determined storage space.

主权项

1. A directory storage method, wherein the directory is used for recording a condition in which a data block in a central processing unit CPU is buffered by a remote node, and comprising:
obtaining, by a node controller NC in the local node, a storage address of the data block in the CPU, wherein the data block is read by the remote node and is in the CPU; determining first content and second content that are respectively located in a first specific bit and a second specific bit of the storage address, wherein the first content and the second content jointly comprise all content of the storage address, and a bit number of the first specific bit is greater than a predetermined bit number threshold and is less than a total bit number of the storage address, wherein the bit number threshold satisfies: the total number of different storage spaces that can be addressed according to the bit number threshold is not less than a sum of the maximum number of data blocks that can be buffered by each CPU in all remote nodes, wherein the remote nodes are in a same cache coherence non-uniform memory access CC-NUMA system with the local node; determining, according to the first content and from each preset storage space used for storing a directory, a storage space in which an addressing address matches the first content; and correspondingly storing the second content and the directory in the determined storage space.