Dan L Robinson

US Patent:

8539164, Sep 17, 2013

Filed:

Oct 2, 2008

Appl. No.:

12/244700

Inventors:

Craig Warner - Addison TX, US
Gary Gostin - Plano TX, US
Dan Robinson - Allen TX, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G06F 13/00

US Classification:

711141, 711E12037

Abstract:

An embodiment of a multiprocessor computer system comprises main memory, a remote processor capable of accessing the main memory, a remote cache device operative to store accesses by said remote processor to said main memory, and a filter tag cache device associated with the main memory. The filter cache device is operative to store information relating to remote ownership of data in the main memory including ownership by the remote processor. The filter cache device is operative to selectively invalidate filter tag cache entries when space is required in the filter tag cache device for new cache entries. The remote cache device is responsive to events indicating that a cache entry has low value to the remote processor to send a hint to the filter tag cache device. The filter tag cache device is responsive to a hint in selecting a filter tag cache entry to invalidate.

US Patent:

20080256306, Oct 16, 2008

Filed:

Apr 11, 2007

Appl. No.:

11/733857

Inventors:

Craig Warner - Addison TX, US
Dan Robinson - Allen TX, US
John Wastlick - Allen TX, US
Michael Schroeder - Plano TX, US

International Classification:

G06F 12/16

US Classification:

711152

Abstract:

Non-inclusive cache systems and methods are provided. In one embodiment a non-inclusive cache system is provided comprising a non-inclusive cache and a cache agent that receives a request for access to the non-inclusive cache and denies the request for access to the non-inclusive cache if the non-inclusive cache system exceeds a predetermined level of activity.