This book constitutes the proceedings of the 8th OpenSHMEM Workshop, held in virtually in August 2021. The 11 full papers and 1 short paper presented in this book were carefully reviewed and selected for inclusion in this volume from 18 submissions. The papers are organized in the following topical sections: Applications and Implementations, Tools and Benchmarks, and Applications and Implementations.

This book constitutes the revised selected papers of the 17th Smoky Mountains Computational Sciences and Engineering Conference, SMC 2020, held in Oak Ridge, TN, USA*, in August 2020.The 36 full papers and 1 short paper presented were carefully reviewed and selected from a total of 94 submissions. The papers are organized in topical sections of computational applications: converged HPC and artificial intelligence; system software: data infrastructure and life cycle; experimental/observational applications: use cases that drive requirements for AI and HPC convergence; deploying computation: on the road to a converged ecosystem; scientific data challenges. *The conference was held virtually due to the COVID-19 pandemic.

This book constitutes the proceedings of the First OpenSHMEM Workshop, held in Annapolis, MD, USA, in March 2014. The 12 technical papers and 2 short position papers presented in this book were carefully reviewed and selected from 16 submissions. They are organized in topical sections named: OpenSHMEM implementations and evaluations; applications; tools; and OpenSHMEM extensions and future directions.