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    • 3. 发明申请
    • System, apparatus and method for issuing predictions from an inventory to access a memory
    • 从库存发出预测以访问存储器的系统,装置和方法
    • US20060095677A1
    • 2006-05-04
    • US10920610
    • 2004-08-17
    • Ziyad HakuraBrian LangendorfStefano PescadorRadoslay DanilakBrad Simeral
    • Ziyad HakuraBrian LangendorfStefano PescadorRadoslay DanilakBrad Simeral
    • G06F12/00
    • G06F9/3802G06F9/383G06F9/3832
    • A system, apparatus, and method are disclosed for managing predictive accesses to memory. In one embodiment, an exemplary apparatus is configured as a prediction inventory that stores predictions in a number of queues. Each queue is configured to maintain predictions until a subset of the predictions is either issued to access a memory or filtered out as redundant. In another embodiment, an exemplary prefetcher predicts accesses to a memory. The prefetcher comprises a speculator for generating a number of predictions and a prediction inventory, which includes queues each configured to maintain a group of items. The group of items typically includes a triggering address that corresponds to the group. Each item of the group is of one type of prediction. Also, the prefetcher includes an inventory filter configured to compare the number of predictions against one of the queues having the either the same or different prediction type as the number of predictions.
    • 公开了一种用于管理对存储器的预测访问的系统,装置和方法。 在一个实施例中,示例性装置被配置为在多个队列中存储预测的预测库存。 每个队列被配置为维持预测,直到预测的一部分被发出以访问存储器或被过滤掉为冗余。 在另一个实施例中,示例性预取器预测对存储器的访问。 预取器包括用于生成多个预测的投机者和预测库存,其包括各自配置为维护一组物品的队列。 该组项通常包括对应于组的触发地址。 该组的每个项目都是一种类型的预测。 此外,预取器还包括库存过滤器,其被配置为将预测数量与具有与预测数量相同或不同的预测类型的一个队列进行比较。
    • 9. 发明申请
    • System, apparatus and method for generating nonsequential predictions to access a memory
    • 用于生成访问存储器的不相关预测的系统,装置和方法
    • US20060041721A1
    • 2006-02-23
    • US10920682
    • 2004-08-17
    • Ziyad HakuraBrian LangendorfStefano PescadorRadoslav DanilakBrad Simeral
    • Ziyad HakuraBrian LangendorfStefano PescadorRadoslav DanilakBrad Simeral
    • G06F12/00
    • G06F12/0875G06F9/345G06F9/383G06F9/3832G06F12/0862
    • A system, apparatus, and method are disclosed for storing and prioritizing predictions to anticipate nonsequential accesses to a memory. In one embodiment, an exemplary apparatus is configured as a prefetcher for predicting accesses to a memory. The prefetcher includes a prediction generator configured to generate a prediction that is unpatternable to an address. Also, the prefetcher also can include a target cache coupled to the prediction generator to maintain the prediction in a manner that determines a priority for the prediction. In another embodiment, the prefetcher can also include a priority adjuster. The priority adjuster sets a priority for a prediction relative to other predictions. In some cases, the placement of the prediction is indicative of the priority relative to priorities for the other predictions. In yet another embodiment, the prediction generator uses the priority to determine that the prediction is to be generated before other predictions.
    • 公开了一种系统,装置和方法,用于存储预先确定对存储器的不连续访问的预测的优先级。 在一个实施例中,示例性装置被配置为用于预测对存储器的访问的预取器。 预取器包括被配置为生成对于地址是不可描述的预测的预测生成器。 此外,预取器还可以包括耦合到预测发生器的目标高速缓存以以确定预测的优先级的方式来维持预测。 在另一个实施例中,预取器还可以包括优先级调整器。 优先级调整器设置预测相对于其他预测的优先级。 在某些情况下,预测的放置表示相对于其他预测的优先级的优先级。 在另一个实施例中,预测生成器使用优先级来确定在其它预测之前将产生预测。
    • 10. 发明授权
    • System and method for a high bandwidth-low latency memory controller
    • 高带宽低延迟存储器控制器的系统和方法
    • US06957298B1
    • 2005-10-18
    • US10657957
    • 2003-09-08
    • James M. Van DykeNicholas J. FoskettBrad SimeralSean Treichler
    • James M. Van DykeNicholas J. FoskettBrad SimeralSean Treichler
    • G06F13/16G06F12/00
    • G06F13/1642
    • A memory controller system is provided including a plurality of memory controller subsystems each coupled between memory and one of a plurality of computer components. Each memory controller subsystem includes at least one queue for managing pages in the memory. In use, each memory controller subsystem is capable of being loaded from the associated computer component independent of the state of the memory. Since high bandwidth and low latency are conflicting requirements in high performance memory systems, the present invention separates references from various computer components into multiple command streams. Each stream thus can hide activate bank preparation commands within its own stream for maximum bandwidth. A page context switch technique may be employed that allows instantaneous switching from one look ahead stream to another to allow low latency and high bandwidth while preserving maximum bank state from the previous stream.
    • 提供了存储器控制器系统,其包括多个存储器控制器子系统,每个存储器控制器子系统连接在存储器和多个计算机组件之一之间。 每个存储器控制器子系统包括用于管理存储器中的页面的至少一个队列。 在使用中,每个存储器控制器子系统能够独立于存储器的状态从相关联的计算机组件加载。 由于高带宽和低延迟是高性能存储器系统中的冲突要求,本发明将来自各种计算机组件的引用分为多个命令流。 因此,每个流可以隐藏在其自己的流内的激活银行准备命令以获得最大带宽。 可以采用页面上下文切换技术,其允许从一个前瞻流到另一个的瞬时切换,以允许低等待时间和高带宽,同时保留来自先前流的最大库状态。