Patent application number | Description | Published |
20100332767 | Controllably Exiting An Unknown State Of A Cache Coherency Directory - In one embodiment, a method includes receiving a read request from a first caching agent and if a directory entry associated with the request is in an unknown state, an invalidating snoop message is sent to at least one other caching agent to invalidate information in a cache location of the other caching agent corresponding to the location of the read request, to enable setting of the directory entry into a known state. Other embodiments are described and claimed. | 12-30-2010 |
20110078384 | MEMORY MIRRORING AND MIGRATION AT HOME AGENT - Methods and apparatus relating to memory mirroring and migration at a Home Agent (HA) are described. In one embodiment, a home agent may mirror its data at a slave agent. In some embodiments, a bit in a directory may indicate status of cache lines. Other embodiments are also disclosed. | 03-31-2011 |
20110078492 | HOME AGENT DATA AND MEMORY MANAGEMENT - Methods and apparatus relating to home agent data and memory management are described. In one embodiment, a scrubber logic corrects an error at a location in a memory corresponding to a target address by writing back the corrected version of data to the target location. In an embodiment, a map out logic maps out an index or way of a directory cache in response to a number of errors, corresponding to the directory cache, exceeding a threshold value. Other embodiments are also disclosed. | 03-31-2011 |
20120047333 | EXTENDING A CACHE COHERENCY SNOOP BROADCAST PROTOCOL WITH DIRECTORY INFORMATION - In one embodiment, a method includes receiving a read request from a first caching agent, determining whether a directory entry associated with the memory location indicates that the information is not present in a remote caching agent, and if so, transmitting the information from the memory location to the first caching agent before snoop processing with respect to the read request is completed. Other embodiments are described and claimed. | 02-23-2012 |
20130007475 | EFFICIENT FREQUENCY BOOST OPERATION - Systems and methods of operating a computing system may involve identifying a plurality of state values, wherein each state value corresponds to a computing thread associated with a processor. An average value can be determined for the plurality of state values, wherein a determination may be made as to whether to grant a frequency boost request based at least in part on the average value. | 01-03-2013 |
20140115274 | EXTENDING A CACHE COHERENCY SNOOP BROADCAST PROTOCOL WITH DIRECTORY INFORMATION - In one embodiment, a method includes receiving a read request from a first caching agent, determining whether a directory entry associated with the memory location indicates that the information is not present in a remote caching agent, and if so, transmitting the information from the memory location to the first caching agent before snoop processing with respect to the read request is completed. Other embodiments are described and claimed. | 04-24-2014 |
20140359230 | PROTOCOL FOR CONFLICTING MEMORY TRANSACTIONS - Embodiments of the invention describe a cache coherency protocol that eliminates the need for ordering between message classes and also eliminates home tracker preallocation. Embodiments of the invention describe a less complex conflict detection and resolution mechanism (at the home agent) without any performance degradation in form of bandwidth or latency compared to prior art solutions. | 12-04-2014 |
20150081977 | EXTENDING A CACHE COHERENCY SNOOP BROADCAST PROTOCOL WITH DIRECTORY INFORMATION - In one embodiment, a method includes receiving a read request from a first caching agent, determining whether a directory entry associated with the memory location indicates that the information is not present in a remote caching agent, and if so, transmitting the information from the memory location to the first caching agent before snoop processing with respect to the read request is completed. Other embodiments are described and claimed. | 03-19-2015 |