Download List


GNU parallel is a shell tool for executing jobs in parallel locally or using remote computers. A job is typically 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. If you use xargs 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 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.

System Requirements

System requirement is not defined
Information regarding Project Releases and Project Resources. Note that the information here is a quote from page, and the downloads themselves may not be hosted on OSDN.

2011-11-23 07:25
20111122 ('Silvio')

This is a bugfix release with no new features. It is probably a good release for stable long-term use.

2011-10-24 05:50

--tag prepends lines with the argument(s). If used with --(n)onall, the line will be prepended with the sshlogin instead. --shellquote does not run the command, but quotes it using \'s, which is useful for making quoted composed commands. --profile can now be repeated, merging multiple profiles. --bibtex now gives the BibTeX entry. A makefile for a simple .deb package: cd packager/debian; make. sql: --list-databases lists the databases.

2011-08-22 09:45
20110822 ('Utøya')

A --timeout option has been implemented so that slow commands can be killed. CPU detection has been improved for Mac OS X. There is an example of a parallel Web crawler in the man page.

2011-07-22 19:33

The --hard option of niceload will suspend a program if a limit is reached, while --soft will slow the program down, and --run-io will slow down a program if disk IO goes above a certain limit. --run-load will slow down a program if loadaverage goes above a certain limit. --run-mem will slow down a program if free memory goes below a certain limit. --run-noswap will slow down a program if the computer is swapping. --start-io, --start-load, --start-mem, and --start-noswap will defer starting a program until the system is below the limit. --io, --load, --mem, and --noswap sets both --run-* and --start-*.

2011-06-22 18:36

--onall will run all the jobs on all the computers. This is useful for system administrators having multiple servers. --nonall runs like --onall but reads no arguments from standard input, so it is possible to do "parallel --nonall -S computer1,computer2 uptime". Context replacement now works with multiple input sources: "parallel -X echo {1}-{2} ::: 1 2 3 ::: a b c --noswap" does not start a job on a server that is swapping.

Project Resources