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公开(公告)号：US09170946B2
公开(公告)日：2015-10-27
申请号：US13724214
申请日：2012-12-21
申请人： Herbert H. Hum , James R. Vash , Eric A. Gouldey , Ganesh Kumar , David Bubien , Manoj K. Arora , Luke Chang , Lavanya Nama , Mahak Gupta
发明人： Herbert H. Hum , James R. Vash , Eric A. Gouldey , Ganesh Kumar , David Bubien , Manoj K. Arora , Luke Chang , Lavanya Nama , Mahak Gupta
IPC分类号： G06F12/08
CPC分类号： G06F12/082 , G06F12/0824 , G06F12/0833 , G06F12/0835 , G06F2212/1016 , G06F2212/621
摘要： Responsive to receiving a write request for a cache line from an input/output device, a caching agent of a first processor determines that the cache line is managed by a home agent of a second processor. The caching agent sends an ownership request for the cache line to the second processor. A home agent of the second processor receives the ownership request, generates an entry in a directory cache for the cache line, the entry identifying the remote caching agent as having ownership of the cache line, and grants ownership of the cache line to the remote caching agent. Responsive to receiving the grant of ownership for the cache line from the home agent an input/output controller of the first processor adds an entry for the cache line to an input/output write cache, the entry comprising a first indicator that the cache line is managed by the home agent of the second processor.
摘要翻译： 响应于从输入/输出设备接收对高速缓存线的写入请求，第一处理器的高速缓存代理器确定高速缓存行由第二处理器的归属代理管理。 缓存代理向第二处理器发送高速缓存行的所有权请求。 第二处理器的归属代理接收所有权请求，在高速缓存行的目录高速缓存中生成条目，将远程高速缓存代理标识为具有高速缓存行的所有权的条目，并将高速缓存行的所有权授予远程缓存 代理商 响应于从所述归属代理接收对所述高速缓存行的所有权的许可，所述第一处理器的输入/输出控制器将用于所述高速缓存行的条目添加到输入/输出写入高速缓存，所述条目包括所述高速缓存行是 由第二处理器的归属代理管理。
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公开(公告)号：US20140181394A1
公开(公告)日：2014-06-26
申请号：US13724214
申请日：2012-12-21
申请人： Herbert H. Hum , James R. Vash , Eric A. Gouldey , Ganesh Kumar , David Bubien , Manoj K. Arora , Luke Chang , Lavanya Nama , Mahak Gupta
发明人： Herbert H. Hum , James R. Vash , Eric A. Gouldey , Ganesh Kumar , David Bubien , Manoj K. Arora , Luke Chang , Lavanya Nama , Mahak Gupta
IPC分类号： G06F12/08
CPC分类号： G06F12/082 , G06F12/0824 , G06F12/0833 , G06F12/0835 , G06F2212/1016 , G06F2212/621
摘要： Responsive to receiving a write request for a cache line from an input/output device, a caching agent of a first processor determines that the cache line is managed by a home agent of a second processor. The caching agent sends an ownership request for the cache line to the second processor. A home agent of the second processor receives the ownership request, generates an entry in a directory cache for the cache line, the entry identifying the remote caching agent as having ownership of the cache line, and grants ownership of the cache line to the remote caching agent. Responsive to receiving the grant of ownership for the cache line from the home agent an input/output controller of the first processor adds an entry for the cache line to an input/output write cache, the entry comprising a first indicator that the cache line is managed by the home agent of the second processor.
摘要翻译： 响应于从输入/输出设备接收对高速缓存线的写入请求，第一处理器的高速缓存代理器确定高速缓存行由第二处理器的归属代理管理。 缓存代理向第二处理器发送高速缓存行的所有权请求。 第二处理器的归属代理接收所有权请求，在高速缓存行的目录高速缓存中生成条目，将远程高速缓存代理标识为具有高速缓存行的所有权的条目，并将高速缓存行的所有权授予远程缓存 代理商 响应于从所述归属代理接收对所述高速缓存行的所有权的许可，所述第一处理器的输入/输出控制器将用于所述高速缓存行的条目添加到输入/输出写入高速缓存，所述条目包括所述高速缓存行是 由第二处理器的归属代理管理。
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3.发明申请EXTENDING A CACHE COHERENCY SNOOP BROADCAST PROTOCOL WITH DIRECTORY INFORMATION 失效扩展带有目录信息的高速缓存的SNOOP广播协议公开(公告)号：US20120047333A1
公开(公告)日：2012-02-23
申请号：US12860340
申请日：2010-08-20
CPC分类号： G06F12/0833 , G06F12/0817 , G06F12/0822 , G06F12/0831 , G06F12/084 , G06F13/4265 , G06F2212/621 , G06F2212/622
摘要： 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.
摘要翻译： 在一个实施例中，一种方法包括从第一高速缓存代理接收读取请求，确定与存储器位置相关联的目录条目是否指示该信息不存在于远程高速缓存代理中，如果是，则将该信息从存储器 关于读取请求的窥探处理之前的第一高速缓存代理的位置被完成。 描述和要求保护其他实施例。
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公开(公告)号：US08656115B2
公开(公告)日：2014-02-18
申请号：US12860340
申请日：2010-08-20
CPC分类号： G06F12/0833 , G06F12/0817 , G06F12/0822 , G06F12/0831 , G06F12/084 , G06F13/4265 , G06F2212/621 , G06F2212/622
摘要： 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.
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公开(公告)号：US09235520B2
公开(公告)日：2016-01-12
申请号：US13997900
申请日：2011-12-20
CPC分类号： G06F12/0815 , G06F12/0824 , G06F12/0828 , G06F12/0831 , G06F13/14 , G06F13/38
摘要： 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.Embodiments of the invention describe a home agent that may receive request messages, e.g., data ownership request messages and data request messages, which include issuance data indicating an order of the respective message issued. Said home agent may determine whether an early or late conflict exists based, at least in part, on a received conflict response message and the issuance data of a most recent completed transaction.
摘要翻译： 本发明的实施例描述了高速缓存一致性协议，其消除了在消息类之间排序的需要，并且还消除了家庭跟踪器预分配。 与现有技术的解决方案相比，本发明的实施例描述了一种不太复杂的冲突检测和解决机制（在归属代理），与带宽或延迟形式没有任何性能下降。 本发明的实施例描述了可以接收诸如数据所有权请求消息和数据请求消息的请求消息的归属代理，其包括指示所发出的各个消息的顺序的发布数据。 所述归属代理可以至少部分地基于接收到的冲突响应消息和最近完成的交易的发行数据来确定是否存在早期或晚期冲突。
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公开(公告)号：US20140359230A1
公开(公告)日：2014-12-04
申请号：US13997900
申请日：2011-12-20
IPC分类号： G06F12/08
CPC分类号： G06F12/0815 , G06F12/0824 , G06F12/0828 , G06F12/0831 , G06F13/14 , G06F13/38
摘要： 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.Embodiments of the invention describe a home agent that may receive request messages, e.g., data ownership request messages and data request messages, which include issuance data indicating an order of the respective message issued. Said home agent may determine whether an early or late conflict exists based, at least in part, on a received conflict response message and the issuance data of a most recent completed transaction.
摘要翻译： 本发明的实施例描述了高速缓存一致性协议，其消除了在消息类之间排序的需要，并且还消除了家庭跟踪器预分配。 与现有技术的解决方案相比，本发明的实施例描述了一种不太复杂的冲突检测和解决机制（在归属代理），与带宽或延迟形式没有任何性能下降。 本发明的实施例描述了可以接收诸如数据所有权请求消息和数据请求消息的请求消息的归属代理，其包括指示所发出的各个消息的顺序的发布数据。 所述归属代理可以至少部分地基于接收到的冲突响应消息和最近完成的交易的发行数据来确定是否存在早期或晚期冲突。
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公开(公告)号：US20120131282A1
公开(公告)日：2012-05-24
申请号：US12953120
申请日：2010-11-23
申请人： Andrew Y. Sun , Henk G. Neefs , Rahul Pal , Manoj K. Arora , Ravindra P. Saraf
发明人： Andrew Y. Sun , Henk G. Neefs , Rahul Pal , Manoj K. Arora , Ravindra P. Saraf
IPC分类号： G06F12/00
CPC分类号： G06F12/0817
摘要： In one embodiment, the present invention includes a processor having at least one core and uncore logic. The uncore logic can include a home agent to act as a guard to control access to a memory region. Either in the home agent or another portion of the uncore logic, a directory cache may be provided to store ownership information for a portion of the memory region owned by an agent coupled to the processor. In this way, when an access request for the memory region misses in the directory cache, a memory transaction can be avoided. Other embodiments are described and claimed.
摘要翻译： 在一个实施例中，本发明包括具有至少一个核和非逻辑逻辑的处理器。 非逻辑逻辑可以包括用作控制对存储器区域的访问的保护的归属代理。 在归属代理或非逻辑逻辑的另一部分中，可以提供目录高速缓存以存储由耦合到处理器的代理拥有的存储器区域的一部分的所有权信息。 以这种方式，当存储器区域的访问请求在目录高速缓存中丢失时，可以避免存储器事务。 描述和要求保护其他实施例。
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公开(公告)号：US08489822B2
公开(公告)日：2013-07-16
申请号：US12953120
申请日：2010-11-23
申请人： Andrew Y. Sun , Henk G. Neefs , Rahul Pal , Manoj K. Arora , Ravindra P. Saraf
发明人： Andrew Y. Sun , Henk G. Neefs , Rahul Pal , Manoj K. Arora , Ravindra P. Saraf
IPC分类号： G06F13/00
CPC分类号： G06F12/0817
摘要： In one embodiment, the present invention includes a processor having at least one core and uncore logic. The uncore logic can include a home agent to act as a guard to control access to a memory region. Either in the home agent or another portion of the uncore logic, a directory cache may be provided to store ownership information for a portion of the memory region owned by an agent coupled to the processor. In this way, when an access request for the memory region misses in the directory cache, a memory transaction can be avoided. Other embodiments are described and claimed.
摘要翻译： 在一个实施例中，本发明包括具有至少一个核和非逻辑逻辑的处理器。 非逻辑逻辑可以包括用作控制对存储器区域的访问的保护的归属代理。 在归属代理或非逻辑逻辑的另一部分中，可以提供目录高速缓存以存储由耦合到处理器的代理拥有的存储器区域的一部分的所有权信息。 以这种方式，当存储器区域的访问请求在目录高速缓存中丢失时，可以避免存储器事务。 描述和要求保护其他实施例。
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