公开(公告)号：US20140164738A1

公开(公告)日：2014-06-12

申请号：US13708544

申请日：2012-12-07

Applicant: NVIDIA CORPORATION

Inventor： Magnus Ekman ,  Guillermo J. Rozas ,  Alexander Klaiber ,  James van Zoeren ,  Paul Serris ,  Brad Hoyt ,  Sridharan Ramakrishnan ,  Hens Vanderschoot ,  Ross Segelken ,  Darrell D. Boggs

IPC: G06F9/30

CPC classification number: G06F9/30 ,  G06F9/3842 ,  G06F9/3861

Abstract: Embodiments related to methods and devices operative, in the event that execution of an instruction produces a runahead-triggering event, to cause a microprocessor to enter into and operate in a runahead without reissuing the instruction are provided. In one example, a microprocessor is provided. The example microprocessor includes fetch logic for retrieving an instruction, scheduling logic for issuing the instruction retrieved by the fetch logic for execution, and runahead control logic. The example runahead control logic is operative, in the event that execution of the instruction as scheduled by the scheduling logic produces a runahead-triggering event, to cause the microprocessor to enter into and operate in a runahead mode without reissuing the instruction, and carry out runahead policies while the microprocessor is in the runahead mode that governs operation of the microprocessor and cause the microprocessor to operate differently than when not in the runahead mode.

Abstract translation: 提供了与方法和设备相关的实施例，其中在指令的执行产生跑道前触发事件的情况下，提供微处理器进入并在没有重新发出指令的情况下操作。 在一个示例中，提供微处理器。 示例微处理器包括用于检索指令的提取逻辑，用于发出由执行提取逻辑检索的指令的调度逻辑以及前导控制逻辑。 示例性跑步头控制逻辑是可操作的，在由调度逻辑调度的指令的执行产生跑道前触发事件的情况下，使得微处理器进入并运行在跑步模式中而不重新发出指令，并执行 微处理器处于控制微处理器操作的跑头模式，并导致微处理器的操作与不在跑头模式时的运行不同。