Workflow management for scientific research computing with Tapis Workflows: Architecture and Design Decisions behind Software for Research Computing Pipelines

BSTRACT Developing research computing workflows often demands significant understanding of DevOps tooling and related software design patterns, requiring researchers to spend time learning skills that are often outside of the scope of their domain expertise. In late 2021, we began development of the Tapis Workflows API to address these issues. Tapis Workflows provides researchers with a tool that simplifies the creation of their workflows by abstracting away the complexities of the underlying technologies behind a user-friendly API that integrates with HPC resources available at any institution with a Tapis deployment. Tapis Workflows Beta is slated to be released by the end of April 2022. In this paper, we discuss the high level system architecture of Tapis Workflows, the project structure, terminology and concepts employed in the project, use cases, design and development challenges, and solutions we chose to overcome them.