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Reduced scalable cache directory

A directory and cache technology, applied in the field of reduced scalable cache directory

Active Publication Date: 2015-04-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, such multi-site storage systems may require coherent storage schemes

Method used

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Embodiment Construction

[0021] It should be understood at the outset that although an illustrative implementation of one or more embodiments is provided below, the disclosed systems and / or methods may be implemented using any number of currently known or available techniques. The invention should in no way be limited to the illustrative implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but may be limited within the scope of the appended claims and their equivalents. Modify within the complete scope of the object.

[0022] A processor may modify memory as part of performing processing functions. The processor can make these changes by updating a local copy of the data stored in cache memory. These changes can then be propagated to main memory. Such a system can lead to multiprocessor system errors because a first processor can make changes to the first local copy of the data, and a second processor can m...

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Abstract

A processing network comprising a cache configured to store copies of memory data as a plurality of cache lines, a cache controller configured to receive data requests from a plurality of cache agents, and designate at least one of the cache agents as an owner of a first of the cache lines, and a directory configured to store cache ownership designations of the first cache line, and wherein the directory is encoded to support substantially simultaneous ownership of the first cache line by a plurality but less than all of the cache agents. Also disclosed is a method comprising receiving coherent transactions from a plurality of cache agents, and storing ownership designations of a plurality of cache lines by the cache agents in a directory, wherein the directory is configured to support storage of substantially simultaneous ownership designations for a plurality but less than all of the cache agents.

Description

[0001] Related Applications Cross Application [0002] This application claims priority over U.S. Nonprovisional Patent Application No. 13 / 952,895, filed July 29, 2013, by Iulin Lih et al., entitled "Reduced Scalable Cache Directory" right, said application claims the U.S. Provisional Patent Application No. 61 / 684,322, filed August 17, 2012 by Iulin Lih et al., entitled "Reduced Scalable Cache Directory" Priority to the first application, the contents of both earlier applications are incorporated herein by reference. [0003] About Federal Sponsored [0004] Statement of Research or Development [0005] Not applicable. [0006] References to Microfiche Attachments [0007] Not applicable. Background technique [0008] Modern computer systems may rely on multiple interconnected processors to process data. Such processor(s) and / or resulting cluster(s) of processors may perform processing operations on substantially the same data concurrently. To reduce system latency, mul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/00
CPCG06F12/0826G06F12/121G06F12/0815G06F12/0806
Inventor 林奕林张纳新贺成洪史洪波
Owner HUAWEI TECH CO LTD