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    COHERENCE PROTOCOL PROVIDING SPECULATIVE COHERENCE RESPONSE TO DIRECTORY PROBE
    2.
    发明申请
    COHERENCE PROTOCOL PROVIDING SPECULATIVE COHERENCE RESPONSE TO DIRECTORY PROBE 审中-公开

    公开(公告)号：US20190188138A1

    公开(公告)日：2019-06-20

    申请号：US15846392

    申请日：2017-12-19

    申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

    发明人： GUY L. GUTHRIE ,  DAVID J. KROLAK ,  MICHAEL S. SIEGEL ,  DEREK E. WILLIAMS

    IPC分类号： G06F12/0831 ,  G06F13/16

    CPC分类号： G06F12/0831 ,  G06F13/1663 ,  G06F2212/1032 ,  G06F2212/507

    摘要： A data processing system includes first and second processing nodes and response logic coupled by an interconnect fabric. A first coherence participant in the first processing node is configured to issue a memory access request specifying a target memory block, and a second coherence participant in the second processing node is configured to issue a probe request regarding a memory region tracked in a memory coherence directory. The first coherence participant is configured to, responsive to receiving the probe request after the memory access request and before receiving a systemwide coherence response for the memory access request, detect an address collision between the probe request and the memory access request and, responsive thereto, transmit a speculative coherence response. The response logic is configured to, responsive to the speculative coherence response, provide a systemwide coherence response for the probe request that prevents the probe request from succeeding.

    COMMAND RATE CONFIGURATION IN DATA PROCESSING SYSTEM
    4.
    发明申请
    COMMAND RATE CONFIGURATION IN DATA PROCESSING SYSTEM 有权
    数据处理系统中的指令速率配置

    公开(公告)号：US20150178238A1

    公开(公告)日：2015-06-25

    申请号：US14136818

    申请日：2013-12-20

    申请人： International Business Machines Corporation

    发明人： GUY L. GUTHRIE ,  DAVID J. KROLAK ,  CHARLES F. MARINO ,  PRAVEEN S. REDDY ,  MICHAEL S. SIEGEL

    IPC分类号： G06F13/42 ,  G06F9/54

    CPC分类号： G06F13/4208 ,  G06F3/00 ,  G06F9/54 ,  G06F13/36 ,  G06F13/4022 ,  G06F15/00 ,  Y02D10/14 ,  Y02D10/151

    摘要： In one or more embodiments, one or more systems, devices, methods, and/or processes described can continually increase a command rate of an interconnect if one or more requests to lower the command rate are not received within one or more periods of time. In one example, the command rate can be set to a fastest level. In another example, the command rate can be incrementally increased over periods of time. If a request to lower the command rate is received, the command rate can be set to a reference level or can be decremented to one slower rate level. In one or more embodiments, the one or more requests to lower the command rate can be based on at least one of an issue rate of speculative commands and a number of overcommit failures, among others.

    摘要翻译： 在一个或多个实施例中，如果在一个或多个时间段内没有接收到降低命令速率的一个或多个请求，则所描述的一个或多个系统，设备，方法和/或处理可以连续地增加互连的命令速率。 在一个示例中，命令速率可以设置为最快的级别。 在另一个示例中，命令速率可以在一段时间内递增地增加。 如果接收到降低命令速率的请求，则可以将命令速率设置为参考级别，或者可以减小到一个较慢的速率级别。 在一个或多个实施例中，降低命令速率的一个或多个请求可以基于以下中的至少一个：推测命令的发布率和多余的过度提供故障等。

    DETERMINING COMMAND RATE BASED ON DROPPED COMMANDS
    6.
    发明申请
    DETERMINING COMMAND RATE BASED ON DROPPED COMMANDS 有权
    基于剔除命令确定命令速率

    公开(公告)号：US20150178230A1

    公开(公告)日：2015-06-25

    申请号：US14136958

    申请日：2013-12-20

    申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

    发明人： PAUL A. GANFIELD ,  GUY L. GUTHRIE ,  JOHN T. HOLLAWAY, JR. ,  DAVID J. KROLAK ,  CHARLES F. MARINO ,  PRAVEEN S. REDDY ,  MICHAEL S. SIEGEL ,  WILLIAM J. STARKE ,  JEFFREY A. STUECHELI

    IPC分类号： G06F13/36 ,  G06F13/40

    CPC分类号： G06F13/36 ,  G01R31/08 ,  G06F3/00 ,  G06F13/4068 ,  Y02D10/14 ,  Y02D10/151

    摘要： In one or more embodiments, one or more systems, devices, methods, and/or processes described can send, via an interconnect, a rate master command to at least one of multiple processing nodes; determine that a message indicating a dropped command, associated with the rate master command, is received; determine that a count, associated with dropped commands, satisfies a threshold; and provide, to the processing nodes via the interconnect, a signal indicating a command rate, in response to determining that the count satisfies the threshold. Moreover, the count can be incremented in response to determining that the message is received. The at least one of multiple processing nodes can receive, via the interconnect, the signal indicating the command rate and can utilize the command rate in issuing speculative commands, via the interconnect.

    摘要翻译： 在一个或多个实施例中，所描述的一个或多个系统，设备，方法和/或处理可以经由互连将速率主控命令发送到多个处理节点中的至少一个; 确定接收到与速率主命令相关联的指示丢弃命令的消息; 确定与丢弃的命令相关联的计数满足阈值; 并且响应于确定所述计数满足所述阈值，经由所述互连件向所述处理节点提供指示命令速率的信号。 此外，可以响应于确定接收到消息而增加计数。 多个处理节点中的至少一个可以经由互连接收指示命令速率的信号，并且可以经由互连来发出推测命令中的命令速率。