CHIUW 2019 is the sixth annual Chapel Implementers and Users Workshop, held in conjunction with PLDI 2019 and ACM FCRC 2019, and sponsored by ACM SIGPLAN. CHIUW's goal is to serve as a forum where users and developers of the Chapel language (chapel-lang.org) can gather to exchange ideas and report on work being done with Chapel and in support of it. Anyone is welcome to attend, from long-term Chapel enthusiasts to those simply curious to learn more.

Topics of interest for CHIUW include:

• User experiences writing applications in Chapel
• Improvements to the Chapel language or its implementation
• Performance or benchmark studies in Chapel
• Libraries or tools for Chapel programmers
• Comparisons to other programming models
• Uses of Chapel in education
• Other topics likely to be of interest to Chapel programmers

CHIUW 2019 is a full-day workshop consisting of Chapel-related presentations. With sufficient interest, we may also add a second day focused on coding in Chapel. In more detail:

Talks Day: The main day of CHIUW will primarily be made up of submitted presentations describing Chapel-related research and development being undertaken by the community. Those interested in submitting research papers or talks should refer to the Submissions section below.

Other workshop activities will include:

• A keynote talk from Anshu Dubey, Argonne National Laboratory
• A pre-workshop introduction to Chapel for those new to the language
• A "State of the Chapel Project" talk
• An impromptu lightning talks session and/or
• A panel/community discussion on Chapel priorities and next steps

Coding Day: Pending sufficient interest, CHIUW 2019 will also include a coding session on June 23rd. In the past, this day has been used to kick off or advance collaborations. It could also be used as a chance to learn something about the Chapel language or its implementation, or to undertake a hackathon-style activity. If such activities would be of interest to you, be sure to let us know at: chapel_submissions@cray.com

Submissions to CHIUW 2019 can made in one of two forms: (1) full research papers and (2) talk proposals. Accepted papers will be published as workshop proceedings in the ACM Digital Library. Papers that are not accepted for publication at CHIUW 2019 will automatically be considered for the talk-only track. The final set of talks will be selected by the workshop's program and steering committees. All presentation materials will be archived on the CHIUW 2019 website.

Paper Submissions: If you have novel Chapel-related work that you would like to publish at CHIUW as part of its official proceedings, please prepare your manuscript using the official SIGPLAN format and submit it via EasyChair by the submission deadline below.

In submitting a paper, authors should be aware of the SIGPLAN Republication policy and SIGPLAN Policy and Procedures on Plagiarism. In addition, authors of accepted papers will need to choose between one of the following options with respect to copyright:

1. Authors retain copyright of the work and grant ACM a non-exclusive permission-to-publish license (and, optionally, license the work with a Creative Commons license)
2. Authors retain copyright of the work and grant ACM an exclusive permssion-to-publish license
3. Authors transfer copyright of the work to ACM.

Authors are also encouraged to publish auxiliary material (e.g., source code, test data, additional technical materials) that will help others reproduce their work, and will retain copyright over such material. For more information, please refer to the following pages on ACM Copyright Policy and ACM Author Rights.

Talk-only Proposals: To propose a talk at CHIUW without an accompanying research paper, please send a short description (2 pages or less) of what you would like to present. CHIUW talks may preview work that's not ready/intended for publication and/or recap work that has previously been published elsewhere. Talk proposals will be evaluated based on their expected level of interest to the CHIUW audience and should include:

• The title of the talk
• The list of contributors and their affiliations
• The presenting author
• A clear description of the talk's contents
• Preliminary results or supporting materials (if appropriate / available)

Submit your talk proposal via EasyChair by the submission deadline below.

Due to its focus on an open-source language, CHIUW is designed to become an increasingly community-driven event. To that end, if there is some other activity that you would like to help make happen at CHIUW, please let us know by mailing chapel_submissions@cray.com

• Jan 31: this call made available
• Mar 22 (AoE): paper and talk submissions due
• Apr 26: notification of acceptances
• May 10: camera-ready deadline
• Jun 22: CHIUW 2019
• Jun 23: potential coding day

TBA

Various benefits are offered by the SIGPLAN Professional Activities Committee to SIGPLAN / ACM members, such as travel and lodging assistance for student authors, or assistance for members who need who need a companion care-provider in order to attend. For details, please refer to the SIGPLAN PAC page.

CHIUW is dedicated to providing a harassment-free workshop experience, and abides by the SIGPLAN Conference Code of Conduct Policy.