Implicit parallelism

Implicit parallelism

In computer science, implicit parallelism is a characteristic of a programming language that allows a compiler to automatically exploit the parallelism inherent to the computations expressed by some of the language's constructs. A pure implicitly parallel languagedoes not need special directives, operators or functions to enable parallel execution.

Some parallel programming languages with implicit parallelism are: LabVIEW, HPF, ZPL, NESL and SISAL.

Advantages

A programmer that writes implicitly parallel code does not need to worry about task division or process communication, focusing instead in the problem that his or her program is intended to solve. Implicit parallelism generally facilitates the design of parallel programs and therefore results in a substantial improvement of programmer productivity.

Disadvantages

Languages with implicit parallelism reduce the control that the programmer has over the parallel execution of the program, resulting sometimes in less-than-optimal parallel efficiency. The makers of the Oz programming language also note that their early experiments with implicit parallelism showed that implicit parallelism made debugging difficult and object models unnecessarily awkward. [cite web|author=Seif Haridi|title=Introduction| url=http://www.mozart-oz.org/documentation/tutorial/node1.html#chapter.introduction|work=Tutorial of Oz|accessdate=2007-09-20|date=2006-06-14]

Notes


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Data parallelism — (also known as loop level parallelism) is a form of parallelization of computing across multiple processors in parallel computing environments. Data parallelism focuses on distributing the data across different parallel computing nodes. It… …   Wikipedia

  • Task parallelism — (also known as function parallelism and control parallelism) is a form of parallelization of computer code across multiple processors in parallel computing environments. Task parallelism focuses on distributing execution processes (threads)… …   Wikipedia

  • Memory-level parallelism — or MLP is a term in computer architecture referring to the ability to have pending multiple memory operations, in particular cache misses or translation lookaside buffer misses, at the same time. In a single processor, MLP may be considered a… …   Wikipedia

  • Explicit parallelism — In computer programming, explicit parallelism is the representationof concurrent computations by means of primitivesin the form of special purpose directives or function calls. Most parallel primitives are related to process synchronization,… …   Wikipedia

  • Parallel computing — Programming paradigms Agent oriented Automata based Component based Flow based Pipelined Concatenative Concurrent computing …   Wikipedia

  • Hegel, spirit, and politics — Leo Rauch Hegel’s impact on political thought has been immense giving shape to the major political movements of the modern world. Yet the person of average education is hardly familiar with the name, which is usually identified with a small… …   History of philosophy

  • OpenMP — Original author(s) OpenMP Architecture Review Board[1] Developer(s) OpenMP Architecture Review Board …   Wikipedia

  • Data Intensive Computing — is a class of parallel computing applications which use a data parallel approach to processing large volumes of data typically terabytes or petabytes in size and typically referred to as Big Data. Computing applications which devote most of their …   Wikipedia

  • Simultaneous multithreading — Simultaneous multithreading, often abbreviated as SMT, is a technique for improving the overall efficiency of superscalar CPUs with hardware multithreading. SMT permits multiple independent threads of execution to better utilize the resources… …   Wikipedia

  • Multithreading (computer architecture) — This article describes hardware supports for multithreads. For thread in software, see Thread (computer science). Multithreading computers have hardware support to efficiently execute multiple threads. These are distinguished from multiprocessing …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”