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1.发明授权Satisfying memory ordering requirements between partial writes and non-snoop accesses 有权满足部分写入和非窥探访问之间的内存排序要求公开(公告)号：US08205045B2
公开(公告)日：2012-06-19
申请号：US12168606
申请日：2008-07-07
IPC分类号： G06F13/16
CPC分类号： G06F12/0831 , G06F12/0813 , G06F2212/621
摘要： A method and apparatus for preserving memory ordering in a cache coherent link based interconnect in light of partial and non-coherent memory accesses is herein described. In one embodiment, when a conflict associated with a partial memory access, such as a partial write, is detected, a write-back phase is inserted at the conflict phase to write-back the partial data to a home agent. Examples messages to initiate a write-back phase at a conflict phase include: an Acknowledge Conflict Write-back message to acknowledge a conflict and provide a write-back marker at the beginning of the conflict phase, a write-back marker message before the conflict phase, a write-back marker message within the conflict phase, a write-back marker message after the conflict phase, and a postable message after the conflict phase.
摘要翻译： 这里描述了一种基于部分和非相干存储器访问的基于高速缓存基于相干链路的互连中的存储器排序的方法和装置。 在一个实施例中，当检测到与部分存储器访问（例如部分写入）相关联的冲突时，在冲突阶段插入回写阶段以将部分数据回写到归属代理。 在冲突阶段启动回写阶段的示例消息包括：确认冲突回写消息以确认冲突并在冲突阶段开始时提供回写标记，冲突之前的回写标记消息 冲突阶段之间的回写标记消息，冲突阶段之后的回写标记消息以及冲突阶段之后的可发布消息。
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2.发明申请公开(公告)号：US20110161451A1
公开(公告)日：2011-06-30
申请号：US13047496
申请日：2011-03-14
IPC分类号： G06F15/16
CPC分类号： G06F12/0831 , G06F12/0826 , G06F2212/622
摘要： A conflict resolution technique provides consistency such that all conflicts can be detected by at least one of the conflicting requestors if each node monitors all requests after that node has made its own request. If a line is in the Exclusive, Modified or Forward state, conflicts are resolved at the node holding the unique copy. The winner of the conflict resolution, and possibly the losers, report the conflict to the home node, which pairs conflict reports and issues forwarding instructions to assure that all requesting nodes eventually receive the requested data. If a requested cache line is either uncached or present only in the Shared state, the home node provides a copy of the cache node and resolves conflicts. In one embodiment, a blackout period after all responses until an acknowledgement message has been received allows all conflicting nodes to be aware of conflicts in which they are involved.
摘要翻译： 冲突解决技术提供一致性，使得如果每个节点在该节点已经做出其自己的请求之后监视所有请求，则冲突请求者中的至少一个可以检测所有冲突。 如果一行处于“独占”，“修改”或“转发”状态，则在保存唯一副本的节点处解决冲突。 冲突解决的胜利者以及可能的失败者将冲突报告给家庭节点，该家庭节点对冲突报告和发出转发指令，以确保所有请求节点最终都接收到所请求的数据。 如果所请求的高速缓存行未被缓存或仅在共享状态下存在，则家庭节点提供缓存节点的副本并解决冲突。 在一个实施例中，在接收到确认消息之后的所有响应之后的停电时段允许所有冲突节点都知道它们涉及的冲突。
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公开(公告)号：US07836144B2
公开(公告)日：2010-11-16
申请号：US11647618
申请日：2006-12-29
IPC分类号： G06F15/167
CPC分类号： G06F12/0831
摘要： A system and method for implementing a cache coherency protocol are described. The system includes a first caching agent to send a first cache request to a home agent. The system also includes the home agent including a queue to store the first cache request.
摘要翻译： 描述了一种用于实现高速缓存一致性协议的系统和方法。 该系统包括向归属代理发送第一缓存请求的第一高速缓存代理。 系统还包括归属代理，其包括用于存储第一高速缓存请求的队列。
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4.发明申请SATISFYING MEMORY ORDERING REQUIREMENTS BETWEEN PARTIAL READS AND NON-SNOOP ACCESSES 有权在部分阅读和非SNOOP访问之间满足记忆订购要求公开(公告)号：US20100005246A1
公开(公告)日：2010-01-07
申请号：US12168613
申请日：2008-07-07
IPC分类号： G06F12/08
CPC分类号： G06F12/0833 , G06F12/0806 , G06F12/0813 , G06F12/0824 , G06F12/0831 , G06F12/128 , G06F2212/2542 , G06F2212/62 , G06F2212/621 , G06F2212/69 , G06F2212/70 , H04L67/28 , H04L67/2842
摘要： A method and apparatus for preserving memory ordering in a cache coherent link based interconnect in light of partial and non-coherent memory accesses is herein described. In one embodiment, partial memory accesses, such as a partial read, is implemented utilizing a Read Invalidate and/or Snoop Invalidate message. When a peer node receives a Snoop Invalidate message referencing data from a requesting node, the peer node is to invalidate a cache line associated with the data and is not to directly forward the data to the requesting node. In one embodiment, when the peer node holds the referenced cache line in a Modified coherency state, in response to receiving the Snoop Invalidate message, the peer node is to writeback the data to a home node associated with the data.
摘要翻译： 这里描述了一种基于部分和非相干存储器访问的基于高速缓存基于相干链路的互连中的存储器排序的方法和装置。 在一个实施例中，使用Read Invalidate和/或Snoop Invalidate消息来实现部分存储器访问，诸如部分读取。 当对等节点接收到从请求节点引用数据的Snoop Invalidate消息时，对等节点将使与数据相关联的高速缓存行无效，并且不将数据直接转发到请求节点。 在一个实施例中，当对等节点保持被修改的一致性状态下的被引用高速缓存行时，响应于接收到无效无效消息，对等节点将该数据写回到与该数据相关联的家庭节点。
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5.发明申请SATISFYING MEMORY ORDERING REQUIREMENTS BETWEEN PARTIAL WRITES AND NON-SNOOP ACCESSES 有权满足部分写作和非SNOOP访问之间的记忆命令要求公开(公告)号：US20100005245A1
公开(公告)日：2010-01-07
申请号：US12168606
申请日：2008-07-07
IPC分类号： G06F12/08
CPC分类号： G06F12/0831 , G06F12/0813 , G06F2212/621
摘要： A method and apparatus for preserving memory ordering in a cache coherent link based interconnect in light of partial and non-coherent memory accesses is herein described. In one embodiment, when a conflict associated with a partial memory access, such as a partial write, is detected, a write-back phase is inserted at the conflict phase to write-back the partial data to a home agent. Examples messages to initiate a write-back phase at a conflict phase include: an Acknowledge Conflict Write-back message to acknowledge a conflict and provide a write-back marker at the beginning of the conflict phase, a write-back marker message before the conflict phase, a write-back marker message within the conflict phase, a write-back marker message after the conflict phase, and a postable message after the conflict phase.
摘要翻译： 这里描述了一种基于部分和非相干存储器访问的基于高速缓存基于相干链路的互连中的存储器排序的方法和装置。 在一个实施例中，当检测到与部分存储器访问（例如部分写入）相关联的冲突时，在冲突阶段插入回写阶段以将部分数据回写到归属代理。 在冲突阶段启动回写阶段的示例消息包括：确认冲突回写消息以确认冲突并在冲突阶段开始时提供回写标记，冲突之前的回写标记消息 冲突阶段之间的回写标记消息，冲突阶段之后的回写标记消息以及冲突阶段之后的可发布消息。
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6.发明授权Satisfying memory ordering requirements between partial reads and non-snoop accesses 有权满足部分读取和非窥探访问之间的内存排序要求公开(公告)号：US08694736B2
公开(公告)日：2014-04-08
申请号：US13591157
申请日：2012-08-21
IPC分类号： G06F13/18
CPC分类号： G06F12/0833 , G06F12/0806 , G06F12/0813 , G06F12/0824 , G06F12/0831 , G06F12/128 , G06F2212/2542 , G06F2212/62 , G06F2212/621 , G06F2212/69 , G06F2212/70 , H04L67/28 , H04L67/2842
摘要： A method and apparatus for preserving memory ordering in a cache coherent link based interconnect in light of partial and non-coherent memory accesses is herein described. In one embodiment, partial memory accesses, such as a partial read, is implemented utilizing a Read Invalidate and/or Snoop Invalidate message. When a peer node receives a Snoop Invalidate message referencing data from a requesting node, the peer node is to invalidate a cache line associated with the data and is not to directly forward the data to the requesting node. In one embodiment, when the peer node holds the referenced cache line in a Modified coherency state, in response to receiving the Snoop Invalidate message, the peer node is to writeback the data to a home node associated with the data.
摘要翻译： 这里描述了一种基于部分和非相干存储器访问的基于高速缓存基于相干链路的互连中的存储器排序的方法和装置。 在一个实施例中，使用Read Invalidate和/或Snoop Invalidate消息来实现部分存储器访问，诸如部分读取。 当对等节点接收到从请求节点引用数据的Snoop Invalidate消息时，对等节点将使与数据相关联的高速缓存行无效，并且不将数据直接转发到请求节点。 在一个实施例中，当对等节点保持被修改的一致性状态下的被引用高速缓存行时，响应于接收到无效无效消息，对等节点将该数据写回到与该数据相关联的家庭节点。
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7.发明授权Non-speculative distributed conflict resolution for a cache coherency protocol 有权用于缓存一致性协议的非推测性分布式冲突解决方案公开(公告)号：US07434006B2
公开(公告)日：2008-10-07
申请号：US11165688
申请日：2005-06-24
IPC分类号： G06F12/08
CPC分类号： G06F12/0831 , G06F12/0813
摘要： A conflict resolution technique provides consistency such that all conflicts can be detected by at least one of the conflicting requestors if each node monitors all requests after that node has made its own request. If a line is in the Exclusive, Modified or Forward state, conflicts are resolved at the node holding the unique copy. The winner of the conflict resolution, and possibly the losers, report the conflict to the home node, which pairs conflict reports and issues forwarding instructions to assure that all requesting nodes eventually receive the requested data. If a requested cache line is either uncached or present only in the Shared state, the home node provides a copy of the cache node and resolves conflicts. In one embodiment, a blackout period after all responses until an acknowledgement message has been received allows all conflicting nodes to be aware of conflicts in which they are involved.
摘要翻译： 冲突解决技术提供一致性，使得如果每个节点在该节点已经做出其自己的请求之后监视所有请求，则冲突请求者中的至少一个可以检测所有冲突。 如果一行处于“独占”，“修改”或“转发”状态，则在保存唯一副本的节点处解决冲突。 冲突解决的胜利者以及可能的失败者将冲突报告给家庭节点，该家庭节点对冲突报告和发出转发指令，以确保所有请求节点最终都接收到所请求的数据。 如果所请求的高速缓存行未被缓存或仅在共享状态下存在，则家庭节点提供缓存节点的副本并解决冲突。 在一个实施例中，在接收到确认消息之后的所有响应之后的停电时段允许所有冲突节点都知道它们涉及的冲突。
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8.发明授权Satisfying memory ordering requirements between partial reads and non-snoop accesses 有权满足部分读取和非窥探访问之间的内存排序要求公开(公告)号：US08250311B2
公开(公告)日：2012-08-21
申请号：US12168613
申请日：2008-07-07
IPC分类号： G06F13/00
CPC分类号： G06F12/0833 , G06F12/0806 , G06F12/0813 , G06F12/0824 , G06F12/0831 , G06F12/128 , G06F2212/2542 , G06F2212/62 , G06F2212/621 , G06F2212/69 , G06F2212/70 , H04L67/28 , H04L67/2842
摘要： A method and apparatus for preserving memory ordering in a cache coherent link based interconnect in light of partial and non-coherent memory accesses is herein described. In one embodiment, partial memory accesses, such as a partial read, is implemented utilizing a Read Invalidate and/or Snoop Invalidate message. When a peer node receives a Snoop Invalidate message referencing data from a requesting node, the peer node is to invalidate a cache line associated with the data and is not to directly forward the data to the requesting node. In one embodiment, when the peer node holds the referenced cache line in a Modified coherency state, in response to receiving the Snoop Invalidate message, the peer node is to writeback the data to a home node associated with the data.
摘要翻译： 这里描述了一种基于部分和非相干存储器访问的基于高速缓存基于相干链路的互连中的存储器排序的方法和装置。 在一个实施例中，使用Read Invalidate和/或Snoop Invalidate消息来实现部分存储器访问，诸如部分读取。 当对等节点接收到从请求节点引用数据的Snoop Invalidate消息时，对等节点将使与数据相关联的高速缓存行无效，并且不将数据直接转发到请求节点。 在一个实施例中，当对等节点保持被修改的一致性状态下的被引用高速缓存行时，响应于接收到无效无效消息，对等节点将该数据写回到与该数据相关联的家庭节点。
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9.发明授权Speculative distributed conflict resolution for a cache coherency protocol 有权高速缓存一致性协议的推测性分布式冲突解决方案公开(公告)号：US07917646B2
公开(公告)日：2011-03-29
申请号：US10325427
申请日：2002-12-19
IPC分类号： G06F15/16
CPC分类号： G06F12/0831 , G06F12/0826 , G06F2212/622
摘要： A conflict resolution technique provides consistency such that all conflicts can be detected by at least one of the conflicting requestors if each node monitors all requests after that node has made its own request. If a line is in the Exclusive, Modified or Forward state, conflicts are resolved at the node holding the unique copy. The winner of the conflict resolution, and possibly the losers, report the conflict to the home node, which pairs conflict reports and issues forwarding instructions to assure that all requesting nodes eventually receive the requested data. If a requested cache line is either uncached or present only in the Shared state, the home node provides a copy of the cache node and resolves conflicts. In one embodiment, a blackout period after all responses until an acknowledgement message has been received allows all conflicting nodes to be aware of conflicts in which they are involved.
摘要翻译： 冲突解决技术提供一致性，使得如果每个节点在该节点已经做出其自己的请求之后监视所有请求，则冲突请求者中的至少一个可以检测所有冲突。 如果一行处于“独占”，“修改”或“转发”状态，则在保存唯一副本的节点处解决冲突。 冲突解决的胜利者以及可能的失败者将冲突报告给家庭节点，该家庭节点对冲突报告和发出转发指令，以确保所有请求节点最终都接收到所请求的数据。 如果所请求的高速缓存行未被缓存或仅在共享状态下存在，则家庭节点提供缓存节点的副本并解决冲突。 在一个实施例中，在接收到确认消息之后的所有响应之后的停电时段允许所有冲突节点都知道它们涉及的冲突。
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10.发明授权Non-speculative distributed conflict resolution for a cache coherency protocol 失效用于缓存一致性协议的非推测性分布式冲突解决方案公开(公告)号：US06954829B2
公开(公告)日：2005-10-11
申请号：US10326232
申请日：2002-12-19
CPC分类号： G06F12/0831 , G06F12/0813
摘要： A conflict resolution technique provides consistency such that all conflicts can be detected by at least one of the conflicting requestors if each node monitors all requests after that node has made its own request. If a line is in the Exclusive, Modified or Forward state, conflicts are resolved at the node holding the unique copy. The winner of the conflict resolution, and possibly the losers, report the conflict to the home node, which pairs conflict reports and issues forwarding instructions to assure that all requesting nodes eventually receive the requested data. If a requested cache line is either uncached or present only in the Shared state, the home node provides a copy of the cache node and resolves conflicts. In one embodiment, a blackout period after all responses until an acknowledgement message has been received allows all conflicting nodes to be aware of conflicts in which they are involved.
摘要翻译： 冲突解决技术提供一致性，使得如果每个节点在该节点已经做出其自己的请求之后监视所有请求，则冲突请求者中的至少一个可以检测所有冲突。 如果一行处于“独占”，“修改”或“转发”状态，则在保存唯一副本的节点处解决冲突。 冲突解决的胜利者以及可能的失败者将冲突报告给家庭节点，该家庭节点对冲突报告和发出转发指令，以确保所有请求节点最终都接收到所请求的数据。 如果所请求的高速缓存行未被缓存或仅在共享状态下存在，则家庭节点提供缓存节点的副本并解决冲突。 在一个实施例中，在接收到确认消息之后的所有响应之后的停电时段允许所有冲突节点都知道它们涉及的冲突。
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