Difference between revisions of "Parallel"

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{{Entry
 
{{Entry
 
|Name=GNU Parallel
 
|Name=GNU Parallel
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|Short description=a shell tool for executing jobs in parallel using one or more computers
+
|Short description=Build and execute command lines in parallel.
−
|Full description=GNU Parallel is a shell tool for executing jobs in parallel using one or more computers. A job is can be a single command or a small script that has to be run for each of the lines in the input. The typical input is a list of files, a list of hosts, a list of users, a list of URLs, or a list of tables. A job can also be a command that reads from a pipe. GNU Parallel can then split the input and pipe it into commands in parallel.  If you use xargs and tee today you will find GNU Parallel very easy to use as GNU Parallel is written to have the same options as xargs. If you write loops in shell, you will find GNU Parallel may be able to replace most of the loops and make them run faster by running several jobs in parallel. GNU Parallel can even replace nested loops.
+
|Full description='''Parallel''' is a shell tool for executing jobs in parallel using one or more computers.
 +
 
 +
A job is can be a single command or a small script that has to be run for each of the lines in the input. The typical input is a list of files, a list of hosts, a list of users, a list of URLs, or a list of tables. A job can also be a command that reads from a pipe. GNU Parallel can then split the input and pipe it into commands in parallel.  If you use xargs and tee today you will find GNU Parallel very easy to use as GNU Parallel is written to have the same options as xargs. If you write loops in shell, you will find GNU Parallel may be able to replace most of the loops and make them run faster by running several jobs in parallel. GNU Parallel can even replace nested loops.
  
 
GNU Parallel makes sure output from the commands is the same output as you would get had you run the commands sequentially. This makes it possible to use output from GNU Parallel as input for other programs.  
 
GNU Parallel makes sure output from the commands is the same output as you would get had you run the commands sequentially. This makes it possible to use output from GNU Parallel as input for other programs.  
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The GNU Parallel distribution also includes an 'sql' script which aims to give a simple, unified interface for accessing databases through all the different databases' command line clients, and a 'niceload' script to slow down or suspend a program if system activity is above a given threshold.
 
The GNU Parallel distribution also includes an 'sql' script which aims to give a simple, unified interface for accessing databases through all the different databases' command line clients, and a 'niceload' script to slow down or suspend a program if system activity is above a given threshold.
−
|Homepage URL=https://www.gnu.org/s/parallel/
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|Homepage URL=https://www.gnu.org/software/parallel/
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|User level=intermediate
+
|Version download=https://ftpmirror.gnu.org/parallel/parallel-20240322.tar.bz2
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|VCS checkout command=git clone git://git.savannah.gnu.org/parallel.git
 
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|Computer languages=Perl
 
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|Documentation note=Documentation for GNU Parallel is available online at [http://www.gnu.org/software/parallel/man.html gnu.org/s/parallel/man] . Screencasts videos can be found at [http://commons.wikimedia.org/wiki/GNU_parallel http://commons.wikimedia.org/wiki/GNU_parallel].
 
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|Related projects=GNU SQL, Coreutils
 
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|Keywords=Perl,argument,parallel,parallel processing,execution,cat
 
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|Version identifier=20131222
 
−
|Version date=2013/12/22
 
−
|Version status=stable
 
−
|Version download=https://ftp.gnu.org/gnu/parallel/parallel-20131222.tar.bz2
 
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|Last review by=genium
 
−
|Last review date=2014/01/06
 
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|Submitted by=WikiSysop
 
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|Submitted date=2011/04/12
 
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|Status=
 
 
|Is GNU=Yes
 
|Is GNU=Yes
 
|GNU package identifier=parallel
 
|GNU package identifier=parallel
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{{Project license
 
{{Project license
 
|License=GPLv3orlater
 
|License=GPLv3orlater
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|License verified by=Kelly Hopkins
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|License copyright=Copyright (C) 2007-2021 Ole Tange, http://ole.tange.dk and Free Software Foundation, Inc.
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|License verified date=2010-09-24
+
|License verified by=Genium
 +
|License verified date=2020-12-23
 +
}}
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{{Software category
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|Interface=command-line
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|Programming-language=perl
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|Runs-on=BSD, OS X, GNU/Linux
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|Use=system-administration
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}}
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{{EntryGNU
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|Is GNU=Yes
 +
|GNU package identifier=parallel
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}}
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{{Software prerequisite
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|Prerequisite kind=Required to use
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|Prerequisite description=[[Perl]] 5.8
 
}}
 
}}
 
{{Person
 
{{Person
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|Role=Maintainer
 
|Role=Maintainer
 
|Email=tange@gnu.org
 
|Email=tange@gnu.org
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|Resource URL=
 
 
}}
 
}}
 
{{Resource
 
{{Resource
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|Resource audience=General
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|Resource audience=Savannah
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|Resource kind=Developer
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|Resource URL=https://savannah.gnu.org/projects/parallel/
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}}
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{{Resource
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|Resource audience=Savannah
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|Resource kind=Bug Tracking
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|Resource URL=https://savannah.gnu.org/bugs/?group=parallel
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}}
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{{Resource
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|Resource audience=Savannah
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|Resource kind=VCS Repository Webview
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|Resource URL=https://git.savannah.gnu.org/cgit/parallel.git/
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{{Resource
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|Resource audience=Bug-parallel Info Page
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|Resource kind=Mailing List
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|Resource URL=https://lists.gnu.org/mailman/listinfo/bug-parallel/
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|Resource audience=Parallel Info Page
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|Resource kind=Mailing List
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{{Resource
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|Resource audience=FTP
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}}
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{{Resource
 +
|Resource audience=FTP
 
|Resource kind=Download
 
|Resource kind=Download
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|Resource URL=http://ftp.gnu.org/gnu/parallel/
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|Resource URL=https://ftp.gnu.org/old-gnu/parallel/
 
}}
 
}}
 
{{Resource
 
{{Resource
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|Resource audience=Developer
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|Resource audience=FTP
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|Resource kind=VCS Repository Webview
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|Resource kind=Download
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|Resource URL=http://git.savannah.gnu.org/cgit/parallel.git
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|Resource URL=https://alpha.gnu.org/gnu/parallel/
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{{Resource
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|Resource URL=https://ftp.gnu.org/gnu/parallel/
 
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{{Resource
 
{{Resource
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|Resource audience=User
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|Resource audience=Wikidata
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|Resource kind=E-mail
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|Resource URL=parallel@gnu.org
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|Resource URL=https://www.wikidata.org/wiki/Q3093314
 
}}
 
}}
 
{{Resource
 
{{Resource
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|Resource audience=Developer
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|Resource audience=Debian
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|Resource kind=E-mail
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|Resource kind=Developer
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|Resource URL=bug-parallel@gnu.org
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|Resource URL=https://tracker.debian.org/pkg/parallel
 
}}
 
}}
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{{Software category
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{{EntryDetails
−
|Interface=command-line
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|Use=system-administration
+
|VCS checkout command=git clone  git://git.savannah.gnu.org/parallel.git
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|Decommissioned or Obsolete=No
 +
|Version identifier=20240322
 +
|Version date=2024-03-31
 +
|Version status=stable
 +
|Last review by=Genium
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|Last review date=2024-04-03
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|Test entry=No
 
}}
 
}}
 
{{Featured
 
{{Featured
−
|Featured date=2011/12/31
+
|Featured date=2011-12-31
 
|Featured source=The Free Software Supporter
 
|Featured source=The Free Software Supporter
 
|Featured category=GNU Spotlight
 
|Featured category=GNU Spotlight
 
}}
 
}}

Latest revision as of 07:06, 3 April 2024


[edit]

GNU Parallel

https://www.gnu.org/software/parallel/
Build and execute command lines in parallel.

Parallel is a shell tool for executing jobs in parallel using one or more computers.

A job is can be a single command or a small script that has to be run for each of the lines in the input. The typical input is a list of files, a list of hosts, a list of users, a list of URLs, or a list of tables. A job can also be a command that reads from a pipe. GNU Parallel can then split the input and pipe it into commands in parallel. If you use xargs and tee today you will find GNU Parallel very easy to use as GNU Parallel is written to have the same options as xargs. If you write loops in shell, you will find GNU Parallel may be able to replace most of the loops and make them run faster by running several jobs in parallel. GNU Parallel can even replace nested loops.

GNU Parallel makes sure output from the commands is the same output as you would get had you run the commands sequentially. This makes it possible to use output from GNU Parallel as input for other programs.

For each line of input, GNU Parallel will execute command with the line as arguments. If no command is given, the line of input is executed. Several lines will be run in parallel. GNU Parallel can often be used as a substitute for xargs or cat Pipe.pngbash.

The GNU Parallel distribution also includes an 'sql' script which aims to give a simple, unified interface for accessing databases through all the different databases' command line clients, and a 'niceload' script to slow down or suspend a program if system activity is above a given threshold.

Heckert gnu.small.png This is a GNU package:parallel

Download

https://ftpmirror.gnu.org/parallel/parallel-20240322.tar.bz2

version 20240322 (stable)
released on 31 March 2024



OpenPGP signature URL: https://ftpmirror.gnu.org/parallel/parallel-20240222.tar.bz2.sig

User level

Intermediate


VCS Checkout

Categories





Licensing

License

Verified by

Verified on

Notes

License

GPLv3orlater

Verified by

Genium

Verified on

23 December 2020




Leaders and contributors

Contact(s)Role
Ole Tange Maintainer


Resources and communication

AudienceResource typeURI
SavannahDeveloperhttps://savannah.gnu.org/projects/parallel/
FTPDownloadhttps://ftp.gnu.org/gnu/parallel/
SavannahBug Trackinghttps://savannah.gnu.org/bugs/?group=parallel
SavannahVCS Repository Webviewhttps://git.savannah.gnu.org/cgit/parallel.git/
FTPDownloadhttps://alpha.gnu.org/gnu/parallel/
DebianDeveloperhttps://tracker.debian.org/pkg/parallel
FTPMailing Listhttps://ftpmirror.gnu.org/parallel/
WikidataGeneralhttps://www.wikidata.org/wiki/Q3093314
Parallel Info PageMailing Listhttps://lists.gnu.org/mailman/listinfo/parallel/
Bug-parallel Info PageMailing Listhttps://lists.gnu.org/mailman/listinfo/bug-parallel/
FTPDownloadhttps://ftp.gnu.org/old-gnu/parallel/


Software prerequisites

KindDescription
Required to usePerl 5.8

This entry (in part or in whole) was last reviewed on 3 April 2024.




Entry










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"Savannah" is not in the list (General, Help, Bug Tracking, Support, Developer) of allowed values for the "Resource audience" property.


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"FTP" is not in the list (General, Help, Bug Tracking, Support, Developer) of allowed values for the "Resource audience" property.


"FTP" is not in the list (General, Help, Bug Tracking, Support, Developer) of allowed values for the "Resource audience" property.


"FTP" is not in the list (General, Help, Bug Tracking, Support, Developer) of allowed values for the "Resource audience" property.


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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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