Editing Pipeline (computing) (section)

=== In computing ===
In [[computing]], a pipeline or data pipeline<ref>[https://www.dativa.com/data-pipelines/ Data Pipeline Development] {{Webarchive|url=https://web.archive.org/web/20180524151334/https://www.dativa.com/data-pipelines/|date=2018-05-24}} Published by Dativa, retrieved 24 May, 2018</ref> is a set of [[data]] processing elements connected in series, where the output of one element is the input of the next one. The elements of a pipeline are often executed in parallel or in time-sliced fashion. Some amount of [[buffer (computer science)|buffer storage]] is often inserted between elements.

Computer-related pipelines include:
* [[Instruction pipeline]]s, such as the [[classic RISC pipeline]], which are used in [[central processing unit]]s (CPUs) and other [[Microprocessor|microprocessors]] to allow overlapping execution of multiple instructions with the same [[digital electronics|circuitry]]. The circuitry is usually divided up into stages and each stage processes a specific part of one instruction at a time, passing the partial results to the next stage. Examples of stages are instruction decode, arithmetic/logic and register fetch. They are related to the technologies of [[superscalar execution]], [[operand forwarding]], [[speculative execution]] and [[out-of-order execution]].
* [[Graphics pipeline]]s, found in most [[graphics processing unit]]s (GPUs), which consist of multiple [[arithmetic and logical unit|arithmetic unit]]s, or complete [[central processing unit|CPU]]s, that implement the various stages of common rendering operations ([[perspective projection]], window [[clipping (computer graphics)|clipping]], [[color]] and [[light]] calculation, rendering, etc.).
* [[pipeline (software)|Software pipeline]]s, which consist of a sequence of computing [[process (computing)|processes]] (commands, program runs, tasks, threads, procedures, etc.), conceptually executed in parallel, with the output stream of one process being automatically fed as the input stream of the next one. The [[Unix]] system call [[pipeline (Unix)|pipe]] is a classic example of this concept.
* [[HTTP pipelining]], the technique of issuing multiple [[HTTP]] requests through the same [[TCP connection]], without waiting for the previous one to finish before issuing a new one.