公开(公告)号：US20180052707A1

公开(公告)日：2018-02-22

申请号：US15798174

申请日：2017-10-30

Applicant: NVIDIA Corporation

Inventor： Gerald F. LUIZ ,  Philip Alexander CUADRA ,  Luke DURANT ,  Shirish GADRE ,  Robert OHANNESSIAN ,  Lacky V. SHAH ,  Nicholas Wang ,  Arthur Merlin DANSKIN

IPC: G06F9/46 ,  G06F9/48

CPC classification number: G06F9/461 ,  G06F9/4812 ,  G06F9/485

Abstract: Techniques are provided for restoring threads within a processing core. The techniques include, for a first thread group included in a plurality of thread groups, executing a context restore routine to restore from a memory a first portion of a context associated with the first thread group, determining whether the first thread group completed an assigned function, and, if the first thread group completed the assigned function, then exiting the context restore routine, or if the first thread group did not complete the assigned function, then executing one or more operations associated with a trap handler routine.

公开(公告)号：US20140189329A1

公开(公告)日：2014-07-03

申请号：US13728784

申请日：2012-12-27

Applicant: NVIDIA CORPORATION

Inventor： Gerald F. LUIZ ,  Philip Alexander CUADRA ,  Luke DURANT ,  Shirish GADRE ,  Robert OHANNESSIAN ,  Lacky V. SHAH ,  Nicholas WANG ,  Arthur DANSKIN

IPC: G06F9/38

CPC classification number: G06F9/3851 ,  G06F9/3861 ,  G06F9/3887 ,  G06F9/4812

Abstract: Techniques are provided for handling a trap encountered in a thread that is part of a thread array that is being executed in a plurality of execution units. In these techniques, a data structure with an identifier associated with the thread is updated to indicate that the trap occurred during the execution of the thread array. Also in these techniques, the execution units execute a trap handling routine that includes a context switch. The execution units perform this context switch for at least one of the execution units as part of the trap handling routine while allowing the remaining execution units to exit the trap handling routine before the context switch. One advantage of the disclosed techniques is that the trap handling routine operates efficiently in parallel processors.

Abstract translation: 提供了用于处理在作为在多个执行单元中执行的线程数组的一部分的线程中遇到的陷阱的技术。 在这些技术中，具有与线程相关联的标识符的数据结构被更新，以指示在执行线程数组期间发生陷阱。 同样在这些技术中，执行单元执行包括上下文切换的陷阱处理例程。 执行单元为至少一个执行单元执行该上下文切换，作为陷阱处理例程的一部分，同时允许剩余执行单元在上下文切换之前退出陷阱处理例程。 所公开技术的一个优点是陷阱处理例程在并行处理器中有效地操作。

公开(公告)号：US20170010914A1

公开(公告)日：2017-01-12

申请号：US15271171

申请日：2016-09-20

Applicant: NVIDIA Corporation

Inventor： Gerald F. LUIZ ,  Philip Alexander CUADRA ,  Luke DURANT ,  Shirish GADRE ,  Robert OHANNESSIAN ,  Lacky V. SHAH ,  Nicholas Wang ,  Arthur Merlin DANSKIN

IPC: G06F9/46 ,  G06F9/48

CPC classification number: G06F9/461 ,  G06F9/4812 ,  G06F9/485

Abstract: Techniques are provided for restoring threads within a processing core. The techniques include, for a first thread group included in a plurality of thread groups, executing a context restore routine to restore from a memory a first portion of a context associated with the first thread group, determining whether the first thread group completed an assigned function, and, if the first thread group completed the assigned function, then exiting the context restore routine, or if the first thread group did not complete the assigned function, then executing one or more operations associated with a trap handler routine.

Abstract translation: 提供了用于恢复处理核心内的线程的技术。 这些技术包括对于包括在多个线程组中的第一线程组，执行上下文恢复例程以从存储器恢复与第一线程组相关联的上下文的第一部分，确定第一线程组是否完成了分配的功能 ，并且如果第一个线程组完成了分配的函数，则退出上下文恢复例程，或者如果第一个线程组未完成分配的函数，则执行与陷阱处理程序例程相关联的一个或多个操作。

公开(公告)号：US20140165072A1

公开(公告)日：2014-06-12

申请号：US13711093

申请日：2012-12-11

Applicant: NVIDIA CORPORATION

Inventor： Nicholas WANG ,  Lacky V. SHAH ,  Gerald F. LUIZ ,  Philip Alexander CUADRA ,  Luke DURANT ,  Shirish GADRE

IPC: G06F9/50

CPC classification number: G06F9/5016 ,  G06F9/461

Abstract: A streaming multiprocessor (SM) included within a parallel processing unit (PPU) is configured to suspend a thread group executing on the SM and to save the operating state of the suspended thread group. A load-store unit (LSU) within the SM re-maps local memory associated with the thread group to a location in global memory. Subsequently, the SM may re-launch the suspended thread group. The LSU may then perform local memory access operations on behalf of the re-launched thread group with the re-mapped local memory that resides in global memory.

Abstract translation: 包括在并行处理单元（PPU）内的流多处理器（SM）被配置为暂停在SM上执行的线程组，并且保存挂起的线程组的操作状态。 SM内的加载存储单元（LSU）将与线程组相关联的本地存储器映射到全局存储器中的位置。 随后，SM可以重新启动挂起的线程组。 然后，LSU可以使用驻留在全局存储器中的重新映射的本地存储器代表重新启动的线程组来执行本地存储器访问操作。