Poster CSSI EPEXA 2020.pdf HarrisonRobert 2020 <div>EPEXA is creating a production-quality, general-purpose, community-supported, open-source software ecosystem to attack the twin challenges of programmer productivity and portable performance for advanced scientific applications. Through application-driven codesign we focus on the needs of irregular and sparse applications that are poorly served by current programming and execution models on massively-parallel, hybrid systems. </div><div><br></div>