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Releases: Alpine-DAV/ascent

Ascent 0.8.0 - Released 2022-02-11

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0.8.0 Release Highlights

ascent-v0.8.0-src-with-blt.tar.gz includes submodules.

(adapted from Ascent's Changelog)

Preferred dependency versions for ascent@0.8.0

  • conduit@0.8.2
  • dray@0.1.8
  • vtk-h@0.8.1
  • vtk-m@1.7.1


  • Added OCCA Derived Field Generation support
  • Added more math expressions
  • Added a time expression
  • Added Cinema rendering support for Devil Ray
  • Added streamline and particle_advection transforms
  • Added history gradient expressions
  • Added the ability save named sessions
  • Added new options to specify Cinema rendering parameters
  • Added the ability save subsets of expression results to session files
  • Added the ability to add comments to PNG files that Ascent creates
  • Added timings out control option to Ascent (and Flow)
  • Added support to render Polygonal nd Polyhedral Meshes
  • Added option to turn of world annotations
  • Added FIDES Support
  • Added Spack and Uberenv support for building on Perlmutter


  • Fixed a bug where ascent timings files were written out twice
  • Fixed a bug where the relay extract protocol was always hdf5, regardless of what was requested
  • Various fixes to


  • Python CMake detection logic now prefers Python 3
  • Changed Ascent's C-API to use Conduit's C-API object helper methods
  • CMake, Spack, and uberenv changes to support newer versions of Cuda, CMake, etc
  • Updated to use VTK-m 1.7.0
  • Make Ascent Webserver support optional, linked to if Conduit Relay Web support exists
  • Simplified the relay extract protocol params, for example can now use hdf5 instead of blueprint/mesh/hdf5
  • Updated Spack and Uberenv support for building on Summit

Docker Containers

  • alpinedav/ascent:0.8.0
  • alpinedav/ascent-jupyter:0.8.0


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Ascent 0.7.1 - Released 2021-05-20

ascent-v0.7.1-src-with-blt.tar.gz includes submodules.

Preferred dependency versions for ascent@0.7.1

  • conduit@0.7.2
  • dray@0.1.6
  • vtk-h@0.7.1
  • vtk-m@1.5.5


  • Added Data Binning examples to the Ascent Intro Tutorial


  • Fixed an issue with the Data Binning bin calculation logic


  • Updated Ascent to use new conduit, dray, and vtk-h versions


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Ascent 0.7.0 - Released 2021-03-19

ascent-v0.7.0-src-with-blt.tar.gz includes submodules.

Release Highlights


  • Added partial failure tolerance (i.e., if there are multiple plots the failure of one doesn’t prevent the others from rendering)
  • Added the ability to use expressions as parameters to filters, e.g., iso contour value = (max(field('density')) - min(field('density)) / 2)
  • Added orthogonal projections for scalar images (projecting onto a 2d plane)
  • Added a triangulate transform
  • Added option to build Ascent with only Devil Ray support


  • Fixed a MPI hang if actions files (yaml or json) fail to parse
  • Fixed several minor issues with saving and reading Mesh Blueprint file sets
  • Fixed a field association bug with Data Binning
  • Fixed a 2D AMR mesh rendering issue


  • To better support installs that are relocated on the file system, Cinema database file resources are now compiled into the Ascent library.
  • Updated to use Babelflow (1.0.1) and Parallel Merge Tree (1.0.2).


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Ascent 0.6.0 - Released 2020-11-06

ascent-v0.6.0-src-with-blt.tar.gz includes submodules.

Release Highlights


  • Added support for Devil Ray (high-order) ray tracer
  • Added vector operations
    • composite vector (create vector from three scalars)
    • vector component (extract scalar component)
  • Allow no refinement for high-order meshes
  • Added support for multiple topologies (e.g., volume and particles in the same mesh)
  • Added support for AMR Nesting relationships (Blueprint Nestsets)
  • Added optional num_files parameter to the Relay Extract. See the Relay Extract Docs for more details.
  • Added an AscentViewer Widget for Jupyter
  • Added new CUDA device link logic to help bottle CUDA dependencies for downstream use
  • Added support for exa prefix style filters


  • Modified Cinema output so it can be viewed without a webserver
  • Removed default behavior of publishing individual vector components when vectors were three separate arrays. This can be achieved by using the vector component filter
  • Changed Docker Images to leverage Jupyter lab
  • Tutorial updates
  • Rendering improvements


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Ascent 0.5.1 - Released 2020-01-31

ascent-v0.5.1-src-with-blt.tar.gz includes submodules.

Release Highlights


  • Added support to render multiple topologies in the same scene.
  • Added a Data Object construct to the main Ascent runtime to easily manage transformations between in-memory mesh representations.


  • Issue where cycle was not properly propagated when converting mfem data.
  • Cinema issue where zoom was applied additively each cycle to oblivion.
  • Cinema issue where cameras were not following the center of the data set.


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Ascent 0.5.0 - Released 2019-11-14

ascent-v0.5.0-src-with-blt.tar.gz and include submodules.

Release Highlights


  • Added new Tutorial Content including C++, Python, and Python-based Jupyter Notebook examples.
  • Added docs for Queries and Triggers
  • Added a Jupyter Extract that provides interactive Python Notebook access to published mesh data. See the related Cloverleaf Demo.
  • Deprecated the execute and reset actions. ascent.execute(actions) now implicitly resets and execute the Ascent actions. To maintain a degree of backwards compatibility, using execute and reset are still passable to ascent.execute(actions). Internally, the internal data flow network will only be rebuilt when the current actions differ from the previously executed actions. Note: this only occurs when the Ascent runtime object is persistent between calls to ascent.execute(actions).
  • Added support for YAML ascent_actions and ascent_options files. YAML files are much easier for humans to compose
  • Add a relative offset option to the Slice filter.


  • Several improvements to Ascent's Expression infrastructure.
  • Updated our uberenv-based to use a 2019/11 version of spack develop.
  • Improved Python error handling and propagation.
  • Updated Docker example to build with Jupyter Notebook support.
  • Updated to VTK-m 1.5.0 and associated VTK-h.
  • Imposed necessary static build constraints for cuda support.


  • Several minor bug fixes


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*Additional plot type: mesh plot

*Additional filters: IsoVolume and ClipByField

*Support for additional clipping implicit functions

*Added tutorials

*Added installation of proxies and tutorial files

*Support for python extracts

*Adding additional camera controls: azimuth and elevation

v0.2.0: updates uberenv to new spack (#57)

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* update to new spack develop

* add unzip package to docker

* updates for new spack

* fix missing uberenv inhertiance, tweaks to travis and docker build configs

* init const props needed for filter interface

* update spack compiles and pkgs for llnl systems

* variant is vtkh instead of vtkm

* try mpich for travis and avoid building cython

* expliclity use +mpi variant so we can trigger mpich

* quote spec when handing to uber