Methods and apparatus for reducing memory latency in a software application
    21.
    发明申请
    Methods and apparatus for reducing memory latency in a software application 有权
    减少软件应用程序内存延迟的方法和装置

    公开(公告)号:US20050086652A1

    公开(公告)日:2005-04-21

    申请号:US10677414

    申请日:2003-10-02

    摘要: Methods and apparatus for reducing memory latency in a software application are disclosed. A disclosed system uses one or more helper threads to prefetch variables for a main thread to reduce performance bottlenecks due to memory latency and/or a cache miss. A performance analysis tool is used to profile the software application's resource usage and identifies areas in the software application experiencing performance bottlenecks. Compiler-runtime instructions are generated into the software application to create and manage the helper thread. The helper thread prefetches data in the identified areas of the software application experiencing performance bottlenecks. A counting mechanism is inserted into the helper thread and a counting mechanism is inserted into the main thread to coordinate the execution of the helper thread with the main thread and to help ensure the prefetched data is not removed from the cache before the main thread is able to take advantage of the prefetched data.

    摘要翻译: 公开了一种用于减少软件应用中的存储器延迟的方法和装置。 所公开的系统使用一个或多个辅助线程来预取主线程的变量,以减少由于存储器延迟和/或高速缓存未命中引起的性能瓶颈。 使用性能分析工具来描述软件应用程序的资源使用情况,并识别遇到性能瓶颈的软件应用程序中的区域。 编译器运行时指令生成到软件应用程序中以创建和管理辅助线程。 辅助线程预取了遇到性能瓶颈的软件应用程序的已识别区域中的数据。 计数机制被插入到辅助线程中,并且计数机制被插入到主线程中以协调辅助线程与主线程的执行,并且有助于确保在主线程可用之前预取数据不被从高速缓存中移除 以利用预取的数据。

    Methods and apparatuses for thread management of multi-threading
    22.
    发明申请
    Methods and apparatuses for thread management of multi-threading 失效
    多线程线程管理方法与设备

    公开(公告)号:US20050081207A1

    公开(公告)日:2005-04-14

    申请号:US10779193

    申请日:2004-02-13

    IPC分类号: G06F9/45 G06F9/46

    CPC分类号: G06F8/441

    摘要: Methods and apparatuses for thread management for multi-threading are described herein. In one embodiment, exemplary process includes selecting, during a compilation of code having one or more threads executable in a data processing system, a current thread having a most bottom order, determining resources allocated to one or more child threads spawned from the current thread, and allocating resources for the current thread in consideration of the resources allocated to the current thread's one or more child threads to avoid resource conflicts between the current thread and its one or more child threads. Other methods and apparatuses are also described.

    摘要翻译: 本文描述了用于多线程的线程管理的方法和装置。 在一个实施例中,示例性过程包括在具有在数据处理系统中可执行的一个或多个线程的代码的编译期间选择具有最低阶的当前线程,确定分配给从当前线程产生的一个或多个子线程的资源, 并且考虑分配给当前线程的一个或多个子线程的资源来为当前线程分配资源,以避免当前线程与其一个或多个子线程之间的资源冲突。 还描述了其它方法和装置。

    Methods and apparatuses for thread management of multi-threading
    23.
    发明授权
    Methods and apparatuses for thread management of multi-threading 失效
    多线程线程管理方法与设备

    公开(公告)号:US07398521B2

    公开(公告)日:2008-07-08

    申请号:US10779193

    申请日:2004-02-13

    IPC分类号: G06F9/45

    CPC分类号: G06F8/441

    摘要: Methods and apparatuses for thread management for multi-threading are described herein. In one embodiment, exemplary process includes selecting, during a compilation of code having one or more threads executable in a data processing system, a current thread having a most bottom order, determining resources allocated to one or more child threads spawned from the current thread, and allocating resources for the current thread in consideration of the resources allocated to the current thread's one or more child threads to avoid resource conflicts between the current thread and its one or more child threads. Other methods and apparatuses are also described.

    摘要翻译: 本文描述了用于多线程的线程管理的方法和装置。 在一个实施例中,示例性过程包括在具有在数据处理系统中可执行的一个或多个线程的代码的编译期间选择具有最低阶的当前线程,确定分配给从当前线程产生的一个或多个子线程的资源, 并且考虑分配给当前线程的一个或多个子线程的资源来为当前线程分配资源,以避免当前线程与其一个或多个子线程之间的资源冲突。 还描述了其它方法和装置。

    Methods and apparatuses for compiler-creating helper threads for multi-threading
    25.
    发明申请
    Methods and apparatuses for compiler-creating helper threads for multi-threading 审中-公开
    用于多线程的编译器创建帮助线程的方法和设备

    公开(公告)号:US20050071438A1

    公开(公告)日:2005-03-31

    申请号:US10676889

    申请日:2003-09-30

    IPC分类号: G06F9/38 G06F9/45 G06F15/167

    摘要: Methods and apparatuses for compiler-created helper thread for multi-threading are described herein. In one embodiment, exemplary process includes identifying a region of a main thread that likely has one or more delinquent loads, the one or more delinquent loads representing loads which likely suffer cache misses during an execution of the main thread, analyzing the region for one or more helper threads with respect to the main thread, and generating code for the one or more helper threads, the one or more helper threads being speculatively executed in parallel with the main thread to perform one or more tasks for the region of the main thread. Other methods and apparatuses are also described.

    摘要翻译: 本文描述了用于多线程的编译器创建的辅助线程的方法和装置。 在一个实施例中,示例性过程包括识别可能具有一个或多个拖欠负载的主线程的区域,所述一个或多个违规负载表示在执行主线程期间可能遭受高速缓存未命中的负载,分析该区域中的一个或多个 相对于主线程的更多帮助线程,以及为一个或多个辅助线程生成代码,一个或多个辅助线程与主线程并行地被推测地执行,以对主线程的区域执行一个或多个任务。 还描述了其它方法和装置。

    Method and apparatus for efficient utilization for prescient instruction prefetch
    26.
    发明申请
    Method and apparatus for efficient utilization for prescient instruction prefetch 有权
    有效利用预编程指令预取的方法和装置

    公开(公告)号:US20050055541A1

    公开(公告)日:2005-03-10

    申请号:US10658072

    申请日:2003-09-08

    IPC分类号: G06F9/30 G06F9/38

    摘要: Embodiments of an apparatus, system and method enhance the efficiency of processor resource utilization during instruction prefetching via one or more speculative threads. Renamer logic and a map table are utilized to perform filtering of instructions in a speculative thread instruction stream. The map table includes a yes-a-thing bit to indicate whether the associated physical register's content reflects the value that would be computed by the main thread. A thread progress beacon table is utilized to track relative progress of a main thread and a speculative helper thread. Based upon information in the thread progress beacon table, the main thread may effect termination of a helper thread that is not likely to provide a performance benefit for the main thread.

    摘要翻译: 装置,系统和方法的实施例通过一个或多个推测性线程增强在指令预取期间处理器资源利用的效率。 利用重命名逻辑和映射表来对推测性线程指令流中的指令进行滤波。 映射表包括一个肯定事件位,用于指示相关联的物理寄存器的内容是否反映由主线程计算的值。 线程进度信标表用于跟踪主线程和推测式辅助线程的相对进度。 基于线程进度信标表中的信息,主线程可能会影响不太可能为主线程提供性能优势的辅助线程的终止。

    Methods and apparatuses for compiler-creating helper threads for multi-threading
    27.
    发明授权
    Methods and apparatuses for compiler-creating helper threads for multi-threading 有权
    用于多线程的编译器创建帮助线程的方法和设备

    公开(公告)号:US08612949B2

    公开(公告)日:2013-12-17

    申请号:US12650630

    申请日:2009-12-31

    IPC分类号: G06F9/45

    摘要: Methods and apparatuses for compiler-created helper thread for multi-threading are described herein. In one embodiment, exemplary process includes identifying a region of a main thread that likely has one or more delinquent loads, the one or more delinquent loads representing loads which likely suffer cache misses during an execution of the main thread, analyzing the region for one or more helper threads with respect to the main thread, and generating code for the one or more helper threads, the one or more helper threads being speculatively executed in parallel with the main thread to perform one or more tasks for the region of the main thread. Other methods and apparatuses are also described.

    摘要翻译: 本文描述了用于多线程的编译器创建的辅助线程的方法和装置。 在一个实施例中,示例性过程包括识别可能具有一个或多个拖欠负载的主线程的区域,所述一个或多个违规负载表示在执行主线程期间可能遭受高速缓存未命中的负载,分析该区域中的一个或多个 相对于主线程的更多帮助线程,以及为一个或多个辅助线程生成代码,一个或多个辅助线程与主线程并行地被推测地执行,以对主线程的区域执行一个或多个任务。 还描述了其它方法和装置。

    Thread-data affinity optimization using compiler
    28.
    发明授权
    Thread-data affinity optimization using compiler 有权
    线程数据亲和力优化使用编译器

    公开(公告)号:US08037465B2

    公开(公告)日:2011-10-11

    申请号:US11242489

    申请日:2005-09-30

    IPC分类号: G06F9/44 G06F9/45

    CPC分类号: G06F8/45

    摘要: Thread-data affinity optimization can be performed by a compiler during the compiling of a computer program to be executed on a cache coherent non-uniform memory access (cc-NUMA) platform. In one embodiment, the present invention includes receiving a program to be compiled. The received program is then compiled in a first pass and executed. During execution, the compiler collects profiling data using a profiling tool. Then, in a second pass, the compiler performs thread-data affinity optimization on the program using the collected profiling data.

    摘要翻译: 线程数据亲和度优化可以在编译要在高速缓存相干非均匀内存访问(cc-NUMA)平台上执行的计算机程序时由编译器执行。 在一个实施例中,本发明包括接收要编译的程序。 接收的程序然后被编译成第一遍并被执行。 在执行期间,编译器使用分析工具收集分析数据。 然后,在第二遍,编译器使用收集的分析数据对程序执行线程数据关联优化。