STORE AWARE PREFETCHING FOR A DATASTREAM
    12.
    发明申请
    STORE AWARE PREFETCHING FOR A DATASTREAM 有权
    为DATASTREAM存储注意事项

    公开(公告)号:US20110066811A1

    公开(公告)日:2011-03-17

    申请号:US12558465

    申请日:2009-09-11

    IPC分类号: G06F12/08 G06F12/00

    摘要: A system and method for efficient data prefetching. A data stream stored in lower-level memory comprises a contiguous block of data used in a computer program. A prefetch unit in a processor detects a data stream by identifying a sequence of storage accesses referencing a contiguous blocks of data in a monotonically increasing or decreasing manner. After a predetermined training period for a given data stream, the prefetch unit prefetches a portion of the given data stream from memory without write permission, in response to an access that does not request write permission. Also, after the training period, the prefetch unit prefetches a portion of the given data stream from lower-level memory with write permission, in response to determining there has been a prior access to the given data stream that requests write permission subsequent to a number of cache misses reaching a predetermined threshold.

    摘要翻译: 一种用于高效数据预取的系统和方法。 存储在下级存储器中的数据流包括在计算机程序中使用的连续的数据块。 处理器中的预取单元通过以单调递增或递减的方式识别参考连续数据块的存储访问序列来检测数据流。 在针对给定数据流的预定训练周期之后,响应于不请求写许可的访问,预取单元从存储器中预取给定数据流的一部分而不具有写许可。 此外,在训练期之后,预取单元响应于确定先前访问给定数据流的请求后的写入权限,从而从具有写许可的下级存储器中预取给定数据流的一部分 的高速缓存未命中达到预定阈值。

    Suction control system for printing or duplicating machines
    13.
    发明授权
    Suction control system for printing or duplicating machines 失效
    用于打印或复印机的吸引控制系统

    公开(公告)号:US5143364A

    公开(公告)日:1992-09-01

    申请号:US638937

    申请日:1991-01-09

    IPC分类号: B41L21/08 B65H3/08

    CPC分类号: B41L21/08 B65H3/0891

    摘要: A printing or duplicating machine has a suction control system which includes a source of vacuum and a conduit connecting the source of vacuum to a suction feeder. An operator panel is used to set a pattern of relative weight of each sheet in a stack. A controlled bleed valve is operatively associated with any of the suction feeder, source of vacuum or conduit for automatically adjusting vacuum at the suction feeder responsive to relative weight of any given sheet as selected by an operator.

    摘要翻译: 打印机或复印机具有抽吸控制系统,该系统包括真空源和将真空源连接到抽吸给料器的导管。 操作面板用于设置堆叠中每张纸张的相对重量的图案。 控制泄放阀可操作地与任何吸入进料器,真空源或管道相关联,用于响应于由操作者选择的任何给定的纸张的相对重量而自动调节吸入进料器处的真空度。