This book constitutes the refereed proceedings of the 4th International Workshop on Asynchronous Many-Task Systems and Applications, WAMTA 2026, held in Garching, Germany, during February 16–18, 2026.The 12 full papers and 2 Short papers included in this book were carefully reviewed and selected from 18 submissions. They focus on the advantages and challenges of task-based programming on modern and future HPC systems.

This book constitutes the refereed proceedings of the 4th International Workshop on Asynchronous Many-Task Systems and Applications, WAMTA 2026, held in Garching, Germany, during February 16–18, 2026.The 12 full papers and 2 Short papers included in this book were carefully reviewed and selected from 18 submissions. They focus on the advantages and challenges of task-based programming on modern and future HPC systems.

This volume contains the thoroughly refereed post-conference proceedings of the Second International Conference on Exascale Applications and Software, EASC 2014, held in Stockholm, Sweden, in April 2014. The 6 full papers presented together with 6 short papers were carefully reviewed and selected from 17 submissions. They are organized in two topical sections named: toward exascale scientific applications and development environment for exascale applications.

This book constitutes the refereed proceedings of the 4th International Workshop on Asynchronous Many-Task Systems and Applications, WAMTA 2026, held in Garching, Germany, during February 16–18, 2026.The 12 full papers and 2 Short papers included in this book were carefully reviewed and selected from 18 submissions. They focus on the advantages and challenges of task-based programming on modern and future HPC systems.

This book constitutes the refereed proceedings of the 4th International Workshop on Asynchronous Many-Task Systems and Applications, WAMTA 2026, held in Garching, Germany, during February 16–18, 2026.The 12 full papers and 2 Short papers included in this book were carefully reviewed and selected from 18 submissions. They focus on the advantages and challenges of task-based programming on modern and future HPC systems.

This volume contains the thoroughly refereed post-conference proceedings of the Second International Conference on Exascale Applications and Software, EASC 2014, held in Stockholm, Sweden, in April 2014. The 6 full papers presented together with 6 short papers were carefully reviewed and selected from 17 submissions. They are organized in two topical sections named: toward exascale scientific applications and development environment for exascale applications.