Abstract

This chapter describes Ascent, a production library for in situ visualization and analysis on exascale architectures. It begins by describing the library’s focal points: minimizing encumbrance on simulation codes and enabling diverse and powerful capabilities. The chapter then describes Ascent’s abstractions, interface, and design. It concludes with success stories that highlight its capabilities: in situ visualization of a 97.8 billion element inertial confinement fusion simulation using 16,384 GPUs, delivering radiography capabilities for a Kelvin-Helmholtz simulation, and native rendering of higher-order elements.

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