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Better Scientific Software
9:00 AM - 12:30 PM
Mon Jan 14, 2019
Champions III (Classroom - Max Capacity: 90)

Description
Authors:
David Bernholdt, ORNL; Anshu Dubey, ANL; Jared O’Neal ANL

Abstract:
The computational science and engineering (CSE) community is in the midst of an extremely challenging period created by the confluence of disruptive changes in computing architectures, demand for greater scientific reproducibility, and new opportunities for greatly improved simulation capabilities, especially through coupling physics and scales. Computer architecture changes require new software design and implementation strategies, including significant refactoring of existing code. Reproducibility demands require more rigor across the entire software endeavor. Code coupling requires aggregate team interactions including integration of software processes and practices. These challenges demand large investments in scientific software development and improved practices. Focusing on improved developer productivity and software sustainability is both urgent and essential. We propose a half day tutorial that distills multi-project and multi-years experience from members of the IDEAS project, and creators of the BSSw.io community website. This tutorial will provide information and hands-on experience with software practices, processes, and tools explicitly tailored for CSE. Goals are improving the productivity of those who develop CSE software and increasing the sustainability of software artifacts. We discuss practices that are relevant for projects of all sizes, with emphasis on small teams, and on aggregate teams composed of small teams. Topics include reasons and motivation for caring about software productivity in science teams, effective models, tools, and processes for small teams (including agile workflow management), reproducibility, and scientific software testing and verification (including automated testing and continuous integration), and refactoring. Draft Outline This outline is tentative and we are open to discussion with the organizers to tailor the content. * Why effective software practices are essential for CSE projects [30 min] - Terminology - Understanding what you want from your CSE software and how to achieve it * Effective models, tools, processes and practices for CSE software teams [30 min] - Small team models, challenges - Aggregate team models, challenges - Agile workflow management - Hands on: Issue tracking via Kanban in GitHub * Reproducibility [30 min] - Increasing demand for reproducibility - Role of better software practices to support reproducibility - Preparing for next-generation publication requirements * Software testing and evolution [45 min] - Introduction and motivation - How to develop tests and test-suites - Planning and verification for refactoring * Software maintenance [45 min] - Workflow management with git - Using Travis CI. Additional Information We are proposing the evolution of a tutorial we have done many times in various venues since 2016. Most recently at SC18, ATPESC 2018, and ISC 2018. Due to the half-day proposed length this will be most similar to the ISC version. We are open to changing the length as well as revising the content. We consider this tutorial to have a mix of content, with the majority being at the beginning and intermediate levels.

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