Publication

Exploiting Resources of a Processor Core

2017

Abstract

In this chapter, we discuss parallelism opportunities in modern CPUs. We cover all the topics shown in Figure 2.1. First, we show that parallelization already exists inside a single-threaded CPU core. We give a brief overview of instruction pipelining, and we explain superscalar and SIMD processors. Then, we move a step further to CPUs with more than one hardware thread inside a single core, the implications of simultaneous multithreading/hyperthreading, and how to utilize this architecture. Finally, we describe how we can efficiently achieve horizontal parallelism in multicores.

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2017

Abstract

Official source

Related concepts (32)

Intel Core

Intel Core is a line of streamlined midrange consumer, workstation and enthusiast computer central processing units (CPUs) marketed by Intel Corporation. These processors displaced the existing mid- to high-end Pentium processors at the time of their introduction, moving the Pentium to the entry level. Identical or more capable versions of Core processors are also sold as Xeon processors for the server and workstation markets. The lineup of Core processors includes the Intel Core i3, Intel Core i5, Intel Core i7, and Intel Core i9, along with the X-series of Intel Core CPUs.

Central processing unit

A central processing unit (CPU)—also called a central processor or main processor—is the most important processor in a given computer. Its electronic circuitry executes instructions of a computer program, such as arithmetic, logic, controlling, and input/output (I/O) operations. This role contrasts with that of external components, such as main memory and I/O circuitry, and specialized coprocessors such as graphics processing units (GPUs). The form, design, and implementation of CPUs have changed over time, but their fundamental operation remains almost unchanged.

Multi-core processor

A multi-core processor is a microprocessor on a single integrated circuit with two or more separate processing units, called cores, each of which reads and executes program instructions. The instructions are ordinary CPU instructions (such as add, move data, and branch) but the single processor can run instructions on separate cores at the same time, increasing overall speed for programs that support multithreading or other parallel computing techniques.

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