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    Scheduling Compatible Threads in a Simultaneous Multi-Threading Processor Using Cycle Per Instruction Value Occurred During Identified Time Interval
    1.
    发明申请
    Scheduling Compatible Threads in a Simultaneous Multi-Threading Processor Using Cycle Per Instruction Value Occurred During Identified Time Interval 有权
    在同一个多线程处理器中调度兼容的线程使用周期每个指令值在确定的时间间隔期间发生

    公开(公告)号：US20080148274A1

    公开(公告)日：2008-06-19

    申请号：US12036804

    申请日：2008-02-25

    申请人： Jos Manuel Accapadi ,  Andrew Dunshea ,  Dirk Michel ,  Mysore Sathyanarayana Srivivas

    发明人： Jos Manuel Accapadi ,  Andrew Dunshea ,  Dirk Michel ,  Mysore Sathyanarayana Srivivas

    IPC分类号： G06F9/46

    CPC分类号： G06F9/4881 ,  G06F2209/483

    摘要： Identifying compatible threads in a Simultaneous Multithreading (SMT) processor environment is provided by calculating a performance metric, such as cycles per instruction (CPI), that occurs when two threads are running on the SMT processor. The CPI that is achieved when both threads were executing on the SMT processor is determined. If the CPI that was achieved is better than the compatibility threshold, then information indicating the compatibility is recorded. When a thread is about to complete, the scheduler looks at the run queue from which the completing thread belongs to dispatch another thread. The scheduler identifies a thread that is (1) compatible with the thread that is still running on the SMT processor (i.e., the thread that is not about to complete), and (2) ready to execute. The CPI data is continually updated so that threads that are compatible with one another are continually identified.

    摘要翻译： 通过计算在SMT处理器上运行两个线程时发生的性能指标（例如每个指令周期（CPI））来提供在同时多线程（SMT）处理器环境中识别兼容线程。 确定在两个线程在SMT处理器上执行时实现的CPI。 如果实现的CPI优于兼容性阈值，则记录指示兼容性的信息。 当线程即将完成时，调度程序将查看完成线程所属的运行队列，以调度另一个线程。 调度程序标识（1）与SMT处理器上仍然运行的线程（即，即将完成的线程）兼容的线程，以及（2）准备执行。 持续更新CPI数据，以便不断地识别彼此兼容的线程。