A many-core capable lightweight in situ visualization and analysis infrastructure for multi-physics HPC simulations.


Ascent is a system designed to meet the in situ visualization and analysis needs of simulation code teams running multi-physics calculations on many-core HPC architectures. It provides rendering runtimes that can leverage both many-core CPUs and GPUs to render images of simulation meshes.

Ascent focuses on ease of use and reduced integration burden for simulation code teams:

  • It does not require any GUI or system graphics libraries.
  • It includes integration examples which demonstrate how to use Ascent inside of three different HPC simulation proxy applications.
  • It provides a built-in web server that supports streaming rendered images directly to a web browser.

Ascent Project Resources

Online Documentation

Githib Source Repo

Issue Tracker


  • Cyrus Harrison (LLNL)
  • Matt Larsen (LLNL)
  • Eric Brugger (LLNL)
  • Jim Eliot (AWE)
  • Kevin Griffin (LLNL)
  • Hank Childs (LBL and UO)
  • Utkarsh Ayachit (Kitware, Inc)

Ascent Documentation

Indices and tables