GSoC 2015 application

Octave's application for GSoC 2015.

Organization ID

octave

Organization name

GNU Octave

Description

GNU Octave (http://www.gnu.org/software/octave/) is a free numerical computing environment largely compatible with Matlab. John W. Eaton began the project in 1992 and remains the primary maintainer. Development is quite active with more than 20 volunteers currently involved. Octave is also widely used in teaching, industry, and research. It has gained attention as the recommended tool for a number of distributed online courses such as Stanford's machine learning course (https://www.coursera.org/course/ml).

GNU Octave has an extensive core of functions useful for computations in several fields, such as numerical analysis, optimisation, signal and image processing, and control theory. Its sister project, Octave Forge (http://octave.sourceforge.net/), helps in speeding up development, increasing user contributions, and testing code before it is included in GNU Octave's core set of functions.

Recent and ongoing improvements include a GUI and just-in-time compilation capabilities, both of which started as GSoC projects.

Tags

c++, mathematics, math, numerical, matlab, scientific, computing

Organization home page url

http://www.octave.org

Logo: http://hg.savannah.gnu.org/hgweb/octave/raw-file/155d8e90ee1f/doc/icons/octave-logo.png

Blog: http://planet.octave.org/

Feed: http://planet.octave.org/atom.xml

Main organization license

GPLv3

Veteran/new

Veteran

Backup admin

JordiGH

If you chose "veteran" in the dropdown above, please summarize your involvement and the successes and challenges of your participation. Please also list your pass/fail rate for each year.

Our first year in GSoC as an independent organization was 2014. We had 3 participating students, who pursued work in approximate matrix factorization, efficient handling of sparse matrices, and finite element methods for solving partial differential equations. While there were some challenges related to mentor availability in one case, all 3 of the students passed and made contributions which have been incorporated into Octave. We also had one student enrolled under SOCiS who successfully improved Octave's ordinary differential equation solvers.

In addition, we also mentored GSoC students on the years 2012 and 2013 under the umbrella of the GNU project. All projects from those years were merged into Octave's development branch or into an Octave Forge package, and have since been released. The GUI project started as GSoC project and its further refinement has been the major feature of the last Octave release. Two of the students are now frequent Octave contributors and another is a mentor for this year.

If you chose "new" in the dropdown above, have you applied in the past? If so, for what year(s)?

N/A

Why is your organization applying to participate in Google Summer of Code? What do you hope to gain by participating?

We hope to establish collaborations with talented new contributors. We also want to raise awareness of Octave in the free software community.

Google Summer of Code represents a unique opportunity to bring new perspectives to the Octave community. As a somewhat older project, we benefit from having new and younger contributors among our developers. We have been able to retain several GSoC participants as contributors to the Octave project and we hope to improve in the future by engaging more effectively with students during both the application and mentoring processes, setting clear standards for what is required for acceptance, and maintaining those standards throughout the project.

Did your organization participate in past Google Summer of Codes? If so, please summarize your involvement and the successes and challenges of your participation.

Yes, we participated in GSoC last year independently (see above for details) and during 2011-2013 under GNU, for a total of 12 students who contributed to the Octave project through GSoC. Additionally, we have been a mentoring organization for the European Space Agency (ESA) Summer of Code in Space (SoCiS) through which we had 4 more students. Students working with us have made valuable contributions which are live and in our main source tree. These contributions covered many different areas, improving Octave's usability in functionality, undertaking such tasks as adding just-in-time compilation support, geometric integration algorithms, and finite element modeling capabilities.

The challenges are managing very diverse problem domains and finding people who are competent in all of them. We have not had trouble keeping students interested, although we have seen lulls in their productive output at times, which were always thankfully remedied with a little prodding.

Summarizing, we have previously mentored a total of 16 students through different programs, all of them having successful experiences which created useful code for the project and community. Because of this, we believe that Octave is a suitable project for GSoC with the capability to mentor students and benefit from their contribution.

What is the URL for your Ideas page?

http://wiki.octave.org/Summer_of_Code_Project_Ideas

What is the main development mailing list for your organization?

octave-maintainers@gnu.org (https://mailman.cae.wisc.edu/listinfo/octave-maintainers)

What is the main IRC channel for your organization?

irc://irc.freenode.net/octave [url: https://webchat.freenode.net/?channels=#octave ]

How many potential mentors do you have for this year's program? What criteria did you use to select them?

We have about 10 contributors have mentored previous summer projects and continue to be active participants in the Octave community

Each project will include at least one core Octave developer as mentor. These are proven, veteran members of the project, active in its development, and familiar with the code base.

GNU Octave is a project with applications in very diverse domains so each project also includes mentors with expertise in the related field. All of these have previously contributed with code, have commit access to either Octave or Octave Forge source tree, and are active in the mailing lists. Most also keep a constant presence in the IRC channel.

What is your plan for dealing with disappearing students?

First, make all reasonable efforts to accommodate the student and make them feel welcome. We will engage the students frequently by email and IRC, provide prompt response to student queries, and expect periodic status reports from mentors about the project status. We will also encourage the student to participate in the public mailing list and IRC channel, with or without the mentor. Their progress should be regularly applied to our source tree, if necessary in a feature branch. All of these have shown to be effective with students in previous years.

Should this fail and the student disappears for unforeseen reasons (which we hope will be very unlikely, since it has never happened before and nobody vanishes without good reason), make reasonable attempts to contact them via alternative channels up to a private phone number. If more than 2 weeks have passed without a response, we will analyse the code submitted thus far, and prepare it for integration into our source tree.

What is your plan for dealing with disappearing mentors?

Distribute the workload among the remaining mentors. The mailing list is active enough and questions almost never go unanswered. Reassign the student to a backup mentor. In the worst case, the project admin can become a mentor for the student until another backup mentor is found.

This situation should be infrequent and we hope to prevent it by selecting mentors with proven involvement in Octave or other free software projects. The vast majority of our mentors have been involved in Octave development for several years, and new mentors with be paired with more experienced ones.

What steps will you take to encourage students to interact with your project's community before and during the program?

We will encourage them to join us on our IRC channel and mailing list. We will set clear expectations on the minimum frequency of email progress updates of every two to three days. Longer updates should be done on a blog and aggregated at http://planet.octave.org

Everything should be completely open. Almost all interactions with the student should be public, e.g. contacting the mentor should happen in the public IRC channel or copy the maintainers mailing list.

Our annual conference, OctConf, will be held in the summer. Students will be invited to attend and present on their work. Previous OctConfs had several such student presenters.

For some projects, there may be way to bridge directly with industry interests. We hope that we can increase student participation this way.

What will you do to encourage that your accepted students stick with the project after Google Summer of Code concludes?

We will constantly merge their code into our codebase, and GNU Octave is a project with many test users that give constant feedback on new features and bug reports. As participants in the mailing lists and bug tracker, students get the feeling of doing something that is being used by others, and that is useful to the community from the very start.

In addition, many GSoC students will likely use Octave during their academic year and in during their professional careers. As such, they are prone to stay involved with its development, even if at a lower lever than during the summer.

Finally, we organize a developers' summit during the summer and have in previous years provided help for GSoC students to attend. This strengthens the relationships between community members and the new students. While only one of the previous GSoC students is currently a core developer, several continued with occasional contributions and most remain available to help us with any problems related to the code they wrote for the project.

Are you a new organization who has a Googler or other organization to vouch for you? If so, please list their name(s) here.

Yes, GNU can vouch for us.

Are you an established or larger organization who would like to vouch for a new organization applying this year? If so, please list their name(s) here.

No.