公开(公告)号：WO2014055264A1

公开(公告)日：2014-04-10

申请号：PCT/US2013/060826

申请日：2013-09-20

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： PAPADOPOULOU, Misel-Myrto ,  HSU, Lisa R. ,  KEGEL, Andrew G. ,  NUWAN, Jayasena S. ,  BECKMANN, Bradford M. ,  REINHARDT, Steven K.

IPC: G06F12/10 ,  G06F9/48

CPC classification number: G06F12/1027 ,  G06F9/4856 ,  G06F2212/654 ,  Y02D10/13 ,  Y02D10/24 ,  Y02D10/32

Abstract: Methods and apparatuses are provided for avoiding cold translation lookaside buffer (TLB) misses in a computer system. A typical system is configured as a heterogeneous computing system having at least one central processing unit (CPU) and one or more graphic processing units (GPUs) that share a common memory address space. Each processing unit (CPU and GPU) has an independent TLB. When offloading a task from a particular CPU to a particular GPU, translation information is sent along with the task assignment. The translation information allows the GPU to load the address translation data into the TLB associated with the one or more GPUs prior to executing the task. Preloading the TLB of the GPUs reduces or avoids cold TLB misses that could otherwise occur without the benefits offered by the present disclosure.

Abstract translation: 提供了用于避免计算机系统中的冷翻译后备缓冲器（TLB）未命中的方法和装置。 典型的系统被配置为具有至少一个中央处理单元（CPU）和共享公共存储器地址空间的一个或多个图形处理单元（GPU）的异构计算系统。 每个处理单元（CPU和GPU）都有独立的TLB。 当将任务从特定CPU卸载到特定GPU时，将随任务分配一起发送翻译信息。 翻译信息允许GPU在执行任务之前将地址转换数据加载到与一个或多个GPU相关联的TLB中。 GPU的预加载减少或避免了在没有本公开提供的优点的情况下可能发生的冷TLB未命中。