Ns-3.22

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This page summarizes the release planning for ns-3.22. The ns-3 release process is listed here and here.

How you can help

The release manager is Tom Henderson. Please contact him if you would like to participate in any way in preparing the ns-3.22 release.

If you are interested in testing a particular feature that is planned for ns-3.22, see the section on this page for testing repos.

If you are interested in helping with a code review of a specific feature that you'd like to see in ns-3.22, please leave your comments on the code review pertaining to the feature of interest.

If you are interested to see that a specific bug be fixed, please email ns-developers mailing list, or the release manager. You will probably be asked to help with creating a patch or testing an existing patch for that bug, if so.

Release goals

1) make a major dent in the bug tracker. Can we clean out most issues on our actively maintained modules, including closing out feature requests for which we do not have anyone working on them?

2) continue the transition to a more modular build system. While a major change to the build system is not planned for ns-3.22, one goal is to start to allow modules outside the core of ns-3 to be maintained in separate places, and integrated using the 'bake' tool (rather than merge everything into ns-3-dev).

3) merge (into ns-3-dev or to a bake-enabled repository) as many new features as we can get ready, including all remaining features from 2013 and 2014 GSOC and SOCIS projects, and 2014 summer projects

Release and development schedule

ns-3.22 is planned for mid-January, 2015. ns-3 makes roughly three releases per year (Dec/Jan, Apr/May, and Aug/Sept timeframes).

This means that we ought to get most new features and major changes into the simulator by early December.

Already done items:


Some upcoming plans:

week of Dec 1

week of Dec 8 (or later)

  • 802.11n patches from Sebastien Derrone
  • deheader ns-3 1832
    • note, this may take some time to work through and test the large patch
  • enable Wstrict-overflow=5 for gcc versions > 4.8.2 bug 1868

Packaging

ns-3.22 will be packaged as a source tarball as before: ns-allinone-3.22.tar.bz2.

The tarball will contain:

  • Latest version of pybindgen
  • Latest version of netanim
  • ns-3.22
  • bake

where bake is used to fetch optional ns-3 components, including DCE.

A patch from ns-3.21 to ns-3.22 will also be posted.

Whether ns-3.22 is prepared in other packaging (e.g. Debian) would require a volunteer to prepare this.

Whether ns-3.22 will be distributed also as a Docker container would require a volunteer to prepare this.

Release platforms

We usually try to keep pace with the latest popular versions of Linux, OS X, and FreeBSD. For the ns-3.22 release, we plan to support the following systems and compilers:

  • OS X 10.10 Yosemite with latest Xcode
  • Ubuntu 14.04 and 14.10 (gcc-4.8, 4.9)
  • Fedora 20 and 21 (gcc-4.8, 4.9)
  • Debian 7 (gcc-4.9)
  • FreeBSD 10.1 (clang 3)
  • CentOS 6.6 (gcc-4.4.7)
  • some legacy platforms (to be determined); likely older Ubuntu LTS and CentOS systems, and OS X 10.9

Testing repos

Some repositories, based on a recent copy of ns-3-dev, are available for testing specific features.

WAVE and vehicular networks

A repository to test 1609.4 WAVE code and vanet-routing-compare example features is available here:

$ ./waf --run vanet-routing-compare $ ./waf --run wave=simple-device $ ./test.py -s wave-mac-extension

Mobility Service Interface

Tiago Cerqueria has posted some code that uses Google Maps and Directions API to fetch waypoints for the ns-3 waypoint mobility model, corresponding to real-world routes provided by the service. There is a testing repository available for this code (the patchset in https://codereview.appspot.com/176430044/ is too large to download from Rietveld). To test, one must obtain an API key from Google, as described in the code review issue. One must also have installed GeographicLib, xerces-cpp, libcurl, and libdl. hg clone http://code.nsnam.org/ns-3-dev cd ns-3-dev/src hg clone http://code.nsnam.org/tomh/mobility-service-interface cd mobility-service-interface mkdir conf # copy your API key to this conf directory as described here https://codereview.appspot.com/176430044/ cd ../../ ./waf configure ... = New features = Developers are working or planning to work on the following new features for ns-3.22. '''Note:''' there is no guarantee that the features will be finished by the end of the year, so check back for progress/status. === Changes to the simulation core === Higher priority: * [[Python3_Project | Python 3 support]] (Siddharth Sankurdar) ** '''Synopsis:''' ns-3 is Python 2 based, and must be upgraded to support both Python 2 and 3 * Shared RngStream (Peter Barnes) ** '''Synopsis:''' Add API to allow multiple random variables to share an underlying RNG stream ** https://codereview.appspot.com/114060043/ Lower priority: * Discuss changes due to Object Start/Stop discussion held at [http://www.nsnam.org/docs/meetings/ns-3-developer-meeting-notes-May14.pdf May developers meeting]. ** This will likely slip until ns-3.23 release cycle. * Changes to better support [[Ns-3_on_Visual_Studio_2012 | ns-3 on Windows Visual Studio]] ** https://codereview.appspot.com/8932044/ ** This may slip until ns-3.23 release cycle. ''' Others to be determined''' === Statistics === * Add a basic statistics collector, and convert some existing stats helpers in LTE and WiFi to use the statistics framework (Tom Henderson and Li Li) ** A staging repository (containing the BasicStatsCollector and other collector types) is being kept at http://code.nsnam.org/safe/ns-3.21-collector === Internet module === * An implementation of MLDv2 for IPv6 (Krishna Teja Yadavalli and Tommaso Pecorella) ** http://www.nsnam.org/wiki/GSOC2014MulticastIPv6 ** https://codereview.appspot.com/121680043/ A number of changes relate to supporting AQM and ECN. This code may end up in the internet module or a new 'internet-queues' module. * Move RED queue from network module to internet module * pfifo_fast queue module ** Some code (lacking IPv6 support, and Sphinx documentation) is staged here: http://code.nsnam.org/tomh/ns-3-dev-aqm/rev/4e1543dc9d68 * Explicit Congestion Notification ** Brian Swenson started to implement it here: http://code.nsnam.org/brian/ns-3-dev/diff/a9858c40b539/src/internet/model/red-queue.cc * FQ-Codel and SFQ-Codel models (Anh Nguyen and Dave Taht) ** http://www.nsnam.org/wiki/GSOC2014Bufferbloat ** This will require some refactoring to allow AQM queues that need access to the IP and transport headers to get access at the layer at which ns3::Queue operates === TCP === * TCP variants for satellite networks (Natale Patriciello) ** https://codereview.appspot.com/122010043/ The following were mentioned in the past but don't seem to be actively worked at the moment: * RttEstimator improvements (Natale Patriciello) * Multipath TCP ([mailto:M.Kheirkhah@sussex.ac.uk Morteza Kheirkhah Sabetghadam]) === WiFi === * MPDU aggregation for 802.11n ([mailto:sebastien.deronne@gmail.com Sebastien Deronne] and [mailto:gbadawy@gmail.com Ghada Badawy], and others) ** https://codereview.appspot.com/164020043 (replacing previous review at https://codereview.appspot.com/14549044/) === Vehicular networks === '''Note:''' There is a 'testing repository' available to test Scott's example and Junling's WAVE code; see [[Ns-3.22#Testing_repos]]. * WAVE for 802.11 vehicular networks (Scott Carpenter and Junling Bu) ** Finish off the 2013 GSoC code merging * VANET example (Scott Carpenter) ** https://codereview.appspot.com/103470050/ * [[RoutesMobilityModel | Routes Mobility Model]] (Tiago Cerqueira) === Delay-tolerant networking === * Self-Delimiting Numeric Values (Dizhi Zhou and Ruben Martinez) ** https://codereview.appspot.com/97540043/ * Licklider Transport Protocol (Ruben Martinez) * Bundle Protocol from SOCIS 2013 (Dizhi Zhou) === DSR === * LEAR extensions https://codereview.appspot.com/96130043/ === CSMA improvements === * https://codereview.appspot.com/109450044/ (Mehdi Moussouni) === Epidemic Routing === * https://codereview.appspot.com/13831049/ === UAN WOSS === * https://codereview.appspot.com/14677043/ === Satellite models === * http://mailman.isi.edu/pipermail/ns-developers/2014-June/012071.html == Software maintenance issues == * <s>[https://www.nsnam.org/bugzilla/show_bug.cgi?id=1945 Remove emu module from codebase (1945)] (Tom Henderson)</s> * [https://www.nsnam.org/bugzilla/show_bug.cgi?id=1770 Mesh test crashes for certain configurations] * [https://www.nsnam.org/bugzilla/show_bug.cgi?id=1900 Time arithmetic consistency] * [https://www.nsnam.org/bugzilla/show_bug.cgi?id=1868 Wstrict-overflow and gcc-4.9] (Tom Henderson and Peter Barnes) * [https://www.nsnam.org/bugzilla/show_bug.cgi?id=1941 Remove unnecessary dependency on Application module in other modules (1941)] Tommaso Pecorella ** Cleanup of remaining modules unnecessarily dependent on applications (aodv, mesh, olsr, lte) == Documentation improvements == * [https://www.nsnam.org/bugzilla/show_bug.cgi?id=1490 improve documentation on linking ns-3 with other libraries] (Tom Henderson) ''others to be determined'' == Bugs or issues in ns-3 core == * [https://www.nsnam.org/bugzilla/show_bug.cgi?id=1962 RandomVariableStream::GetStream returns -1 for all automatically assigned streams (1962)] Peter Barnes * Close [https://www.nsnam.org/bugzilla/show_bug.cgi?id=954 Changing the simulation time resolution does not work well with attributes (954)] ? * Close [https://www.nsnam.org/bugzilla/show_bug.cgi?id=764 feature request: non-doxygen trace source introspection program needed] with status Resolved? == Bugs in models to fix == '' To be determined ''

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