SIMD是什么意思? [英] What does SIMD mean?

问题描述

我从《威廉·斯托林斯》(William Stallings)写的《操作系统内部和设计原理》一书中读到，GPU是针对多个数据的单指令，但我没有理解它的含义.我在google中搜索并得到了这个假设，我不确定它是对还是错，那就是:

I have read from the book "Operating System Internals and Design Principles" written by "William Stallings" that GPUs are Single-Instruction on Multiple Data, I don't get it what it means. I searched in google and got this assumption which I am not sure if it is right or wrong and that is:

• SIMD GPU意味着GPU仅处理一系列数据(例如游戏)上的一条指令，GPU仅负责游戏的图形表示，其余的计算由CPU完成，这是真的.

推荐答案

在GPU的上下文中，SIMD是一种硬件体系结构，因此可以同时进行(并行)计算(一条指令的执行)，但是只有一个在给定的时间处理(指令).

In the context of GPU's, SIMD is a type of hardware architecture such that there are simultaneous (parallel) computations (Execution of an instruction), but only a single process (instruction) at a given moment.

从原理上讲，SIMD体系结构可以绘制如下:

Schematically, the SIMD architecture can be drawn as the following:

(维基百科的信用额: https://en.wikipedia.org/wiki/SIMD)

(credit for wikipedia: https://en.wikipedia.org/wiki/SIMD)

在我们的上下文中，数据池是GPU内存&PU是处理单元或执行单元(在NVidia的GPU术语中为Cuda核心).底线-GPU的单个内核可以对不同的数据同时执行相同的指令.

Data Pool in our context is the GPU memory & PU is a processing unit or execution unit (Cuda core in NVidia's GPU terms). Bottom line - a single core of GPU can execute simultaneously the same instruction over different data.

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