Intel Corporation

Hewlett-packard Development Company, L.P.

Terry C Huang

Gary Belgrave Gostin

Yen-Cheng Liu

Bahaa Fahim

Bongjin Jung

Michael K Dugan

Nazar Syed Haider

Curtis R McAllister

Tejpal Singh

Mark A Heap

Donald C Soltis, Jr

Henry Yu

Chung-Chi Wang

A shared mesh comprises a mesh station. The mesh station is used to couple to at least a first core component and a second core component. The mesh station includes a logic unit. The mesh station is shared by at least the first core component and the second core component. A memory is coupled to the mesh station.

Shared mesh

An apparatus and method for performing speculative directory cache tag updates for read accesses to memory is herein disclosed. A control unit for performing tag updates is coupled between the memory controller and the memory bank in a multiprocessor system that employs a directory-based coherency protocol. The control unit transmits data read from the memory bank to the memory controller while calculating the updated tag that it then writes back to the memory bank. In this manner, the memory bank busy time and memory bus traffic are reduced thereby improving the overall performance of a memory access.

Apparatus and method for performing speculative cache directory tag updates

Growing community of inventors

San Jose, CA, United States of America

Terry C Huang