公开(公告)号：US20140344821A1

公开(公告)日：2014-11-20

申请号：US13897123

申请日：2013-05-17

Applicant: NVIDIA CORPORATION

Inventor： Vivek KINI ,  Christopher LAMB

IPC: G06F9/50

CPC classification number: G06F9/38 ,  G06F9/4843 ,  G06F9/4881 ,  G06F9/5038 ,  G06F2209/5021 ,  G06T1/20

Abstract: One embodiment sets forth a method for assigning priorities to kernels launched by a software application and executed within a stream of work on a parallel processing subsystem that supports dynamic parallelism. First, the software application assigns a maximum nesting depth for dynamic parallelism. The software application then assigns a stream priority to a stream. These assignments cause a driver to map the stream priority to a device priority and, subsequently, associate the device priority with the stream. As part of the mapping, the driver ensures that each device priority is at least the maximum nesting depth higher than the device priorities associated with any lower priority streams. Subsequently, the driver launches any kernel included in the stream with the device priority associated with the stream. Advantageously, by strategically assigning the maximum nesting depth and prioritizing streams, an application developer may increase the overall processing efficiency of the software application.

Abstract translation: 一个实施例提出了一种用于为由软件应用发起的内核分配优先级并在支持动态并行性的并行处理子系统的工作流内执行的方法。 首先，软件应用程序为动态并行分配最大嵌套深度。 然后，软件应用程序将流优先级分配给流。 这些分配使驱动程序将流优先级映射到设备优先级，然后将设备优先级与流关联。 作为映射的一部分，驱动程序确保每个设备的优先级至少高于与任何较低优先级流相关联的设备优先级的最大嵌套深度。 随后，驱动程序使用与流相关联的设备优先级启动流中包含的任何内核。 有利地，通过策略性地分配最大嵌套深度和优先化流，应用开发者可以增加软件应用的整体处理效率。

公开(公告)号：US20140344528A1

公开(公告)日：2014-11-20

申请号：US13897193

申请日：2013-05-17

Applicant: Nvidia Corporation

Inventor： Vivek KINI ,  Christopher LAMB ,  Mark HAIRGROVE

IPC: G06F13/16

CPC classification number: G06F13/1663 ,  G06F9/52 ,  G06F13/16 ,  G06F13/1605 ,  G06F13/1642 ,  G06F13/18

Abstract: One embodiment sets forth a method for guiding the order in which a parallel processing subsystem executes memory copies. A driver creates semaphores for all but the lowest priority included in a plurality of priorities and associates one priority with each copy hardware channel included in the parallel processing subsystem. The driver then aliases prioritized streams to the copy hardware channels based on the priorities. Upon receiving a request to execute a memory copy within one of the streams, the driver inserts commands into the aliased copy hardware channel. These commands use the semaphores to direct the parallel processing subsystem to execute the memory copy based on the priority of the copy hardware channel. Advantageously, by assigning priorities to streams and, subsequently, strategically requesting memory copies within the prioritized streams, an application developer may fine-tune their software application to increase the overall processing efficiency of the software application.

Abstract translation: 一个实施例提出了一种用于指导并行处理子系统执行存储器拷贝的顺序的方法。 驱动程序为包含在多个优先级中的除了最低优先级之外的所有者创建信号量，并且将包括在并行处理子系统中的每个复制硬件信道的优先级与一个优先级相关联。 然后，驱动程序根据优先级将优先级流复制到复制硬件通道。 在接收到在其中一个流中执行存储器副本的请求时，驱动程序将命令插入到别名复制硬件通道中。 这些命令使用信号指示并行处理子系统根据复制硬件通道的优先级执行存储器复制。 有利地，通过为流分配优先级，并且随后在优先级流中策略地请求存储器副本，应用开发者可以微调其软件应用以提高软件应用的整体处理效率。