Intel® Core™ Processors

针对“普通级(以上)厨师”的高级计算机概念: 简介

之前在与一位非常聪明但不是专业工程师的同事交谈时,我发现有必要对线程化和英特尔® 至强融核™ ⅹ100 和 ⅹ200 架构的其他组件稍作解释。 首先关于超线程,(说的更具体一点)以及协处理器的超线程版本。 经过冥思苦想,我终于想到可以用公共厨房来进行恰当的比喻。

Image of cook, oven & appliances

 

 

针对“普通级(以上)厨师”的高级计算机概念: 术语(第 1 部分)

开始之前,我想通过下面两篇博客解释一些术语。 如果对这些概念已经有所了解,可以直接跳至下一部分。  我建议所有软件读者参阅其他关于介绍线程的博客。 这个领域存在许多混淆,即使我们软件专业人员也无法避免。

我们首先来了解一下什么是处理器、CPU、内核以及封装。 电视等大众媒体在使用这些术语时通常比较随便。 然后我们介绍线程,尤其是硬件和软件线程之间的区别。 人们通常容易混淆这些不同线程之间的区别,即使计算机编程人员也不例外。

内核? CPU? 封装? 芯片? HUH?

请大家注意下图 CPU 的左侧。 在奔腾® 处理器时代,人们通常将计算机中执行程序指令的组件(即计算机的大脑)称为“CPU” 或‘处理器’。 这两者之间几乎没有区别。 ‘计算机芯片’指上面刻有集成电路的芯片,比如 CPU。 ‘封装’指由塑料和金属制成的外壳,用于包裹和保护芯片不被大量针脚/接口刺穿,同时也是出于美观的考虑。

使用英特尔® 软件开发仿真器的优势

简介

全新的英特尔处理器引入了增强型扩展指令集,以此提升应用的性能或增强其安全性。  英特尔 AVX1 和 AVX21 等扩展指令集主要用于提升性能,而英特尔 SHA2 指令则用于 SHA 加速,从而增强应用的安全性。

如果开发人员希望用这些新指令创建应用,但目前的硬件不支持这些指令该怎么办?  公司如何证明购买新系统来支持新指令的价值,同时确保其应用能够充分利用这些新指令来提升性能?

英特尔® 软件开发仿真器可用于在不支持新指令的系统上执行包含这些指令的应用。

本文将探讨使用 SDE 测试使用新指令的代码所带来的优势。

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  • Game Companies Speed Up Development with Intel® Sample Code

    Whether you are an indie game developer or a seasoned professional, you are likely to find an interesting code sample on Intel Developer Zone's game dev section. Read here to learn how Intel engineers worked with Blizzard and Codemasters to optimize our Adaptive Volumetric Shadow Maps (AVSM), Conservative Morphological Anti-Aliasing (CMAA), and Software Occlusion Culling code samples.
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  • samples we’ve created have been adapted for use in games published by Blizzard and Codemasters – specifically Adaptive Volumetric Shadow Maps (AVSM)
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  • and Software Occlusion Culling.
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  • Easy SIMD through Wrappers

    SIMD operations are widely used for 3D graphics applications. This tutorial provides new insights into SIMD by comparing SIMD lanes and CPU threads, and steps you through the process of creating a simple, straightforward SIMD implementation in your own code.
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  • Benefits of Using Intel® Software Development Emulator

    Introduction

    New Intel processors introduce enhanced instruction set extensions to improve performance or strengthen security of an application.  Instruction set extensions like Intel AVX1 and AVX21 are used to improve performance and Intel SHA2 instructions are used for SHA acceleration to increase security of an application.

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  • Advanced Computer Concepts for The (Not So) Common Chef: First Some Terminology Part 2

    OF COURSE, I KNOW WHAT A THREAD IS….DON’T I?

    Now that we know what a core is, let’s dive into another source of confusion.

    This section gets a little deeper into techno babble than I wanted for this series of blogs. If you are so inclined, my gourmet readers, you can either skip or read on. I believe the rest of the blogs can be understood with or without this little aside. But for those of you who are already familiar with threading, it may give you more insight than would be the case otherwise.

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