CHIUW 2016—the third annual Chapel Implementers and Users Workshop, to be held in conjunction with IEEE IPDPS 2016—will continue our annual series of workshops designed to bring developers and users of the Chapel language (chapel-lang.org) together to report on work being done across the broad open-source community and to explore ways to advance Chapel. Attendance is open to anyone interested in Chapel, from the most seasoned Chapel user or developer to someone simply curious to learn more.

The main day of the workshop will be presentation- and discussion-based, as in previous years—essentially, a full-day mini-conference focusing on Chapel. We are also interested in holding an additional "code camp" day on Saturday, as at CHIUW 2015, to support interactive pair-programming and collaborative activities, if interest and scheduling permit.

Mini-Conference Day: The backbone of the main day of CHIUW will be composed of talks from members of the Chapel community describing work they are undertaking within the context of Chapel. Other activities during this first day will include:

• A pre-workshop introduction to Chapel for those new to the language
• A "State of the Chapel Project" talk
• A keynote by Nikhil Padmanabhan (Professor of Physics, Yale University)
• A community discussion on Chapel's next steps and future

Interested parties are encouraged to submit papers and talks using the process outlined below. The selection of speakers and final program will be decided upon by the workshop's program committee.

For CHIUW 2016, we will be accepting paper submissions for the first time, though we will also accept talk proposals without papers as in past years. We anticipate that accepted papers will be awarded longer talk slots than proposals that are talks only. Papers will be included in the IEEE IPDPS workshop proceedings which will be distributed at the conference and submitted for inclusion in the IEEE Xplore Digital Library after the conference. All talk slides and materials developed for the workshop will be archived on the CHIUW workshop website.

Code Camp Day: Pending sufficient interest CHIUW will also include a second "code-camp" half-day for pair-programming and collaborative activities. This day is designed to partner members of the core Chapel team with members of the community who are striving to gain better knowledge of some aspect of the Chapel code base. If you have a specific topic or activity that you'd like to propose for this day (e.g., "I'd like to work with someone to try coding algorithm x in Chapel" or "I'd like someone to help me get familiar with aspect y of the Chapel compiler/runtime/module code base"), please submit it using the process below.

Paper Submissions: If you have Chapel-related work that you would like to present at CHIUW and publish as part of the IEEE IPDPS proceedings, please prepare your manuscript according to the formatting guidelines given in the IEEE IPDPS 2016 call for papers (see "What/Where to Submit"). All accepted papers will be governed by the IEEE IPDPS dates and procedures regarding workshop publications.

Submit your manuscript via EasyChair by the date shown below.

Talk Proposals: As in past instances of CHIUW, we will also consider talk proposals that are not accompanied by a paper, though the expectation is that they will be awarded a shorter presentation slot. To propose such a talk, submit a one-page extended abstract using a reasonable format and 10- or 11-point font. Extended abstracts should be sure to include:

• The title of the talk
• The list of authors and their affiliations
• The presenting author
• A detailed description of the work you intend to present

Submit your extended abstract via EasyChair by the date shown below.

Code Camp Proposals: If you have a pair-programming or collaborative activity that you would like to participate in during a code camp day at the workshop, please send a short paragraph describing it to chapel_submissions@cray.com . We hope to be able to accept all reasonable proposals, the primary constraint being the number of Chapel team members available at the workshop to participate in them. For this reason, from a planning/resource perspective, the earlier we receive these proposals the better, though we will consider additional ad-hoc activities right up to the day itself (to support ideas that come up during the mini-conference day, for example).

Other Proposals: Chapel is a community language and our intention is for CHIUW to become an increasingly community-run event, so if you have proposals for other activities that you would like to see take place at CHIUW (particularly if you're interested in leading that activity), please let us know by mailing chapel_submissions@cray.com .

Register via the IPDPS registration site. If you're only attending CHIUW, select a one-day registration. To attend other days at IPDPS, select from the other options as appropriate.

• Sep 30: this call posted
• Jan 15 Jan 22 (AoE): paper submissions due (extended one week)
• Feb 12: notification of paper acceptances
• Feb 19 (AoE): extended abstracts for talk proposals due
• Feb 28 Mar 7: camera-ready deadline for accepted papers
• Mar 4: notification of accepted talks
• Mar 18: workshop program and extended abstracts posted to web
• May 27-28: CHIUW 2016

General Chairs:

• Tom MacDonald, Cray Inc.
  
• Greg Titus, Cray Inc.
  

Program Committee:

• Brad Chamberlain (chair), Cray Inc.
• Mike Chu (co-chair), AMD
• Richard Barrett, Sandia National Laboratories
• Jens Breitbart, Technische Universität München
• Brian Guarraci, Cricket Health
• Jeff Hammond, Intel
• Rob Neely, Lawrence Livermore National Laboratory
• Phil Nelson, Western Washington University
• Michelle Strout, University of Arizona
• Didem Unat, Koç Universitesi