HUG 2021 Call for Papers

Virtual Conference | October 12-15, 2021

Submit online

HDF5 has been a widely used tool to simplify management and access to scientific and engineering data with ubiquitous data solutions. With rapidly growing data across all domains of science and industry, HDF5 developers have been building technologies that provide rapid, easy, and permanent access to complex data.

HDF5 has been extremely successful with a wide range of users and an ecosystem built around the HDF5 library. The HDF Group and Lawrence Berkeley National Laboratory (LBNL) are hosting a virtual HDF5 User Group 2021 (HUG 2021) meeting to facilitate a broader discussion among HDF5 users around the world.

We invite you to present at the HUG 2021 meeting on October 12-15, 2021. We are soliciting submissions in two categories “Paper and Presentation” or “Presentation”.

Submission Guidelines

All papers must be original and not simultaneously submitted to another journal or conference. The following categories are welcome:

Paper and Presentation

  • For consideration, participants will submit an abstract (up to 500 words) discussing novel results and research.
  • Upon acceptance, participants are responsible for submitting the a full paper (up to 10 pages) for review by the HUG 2021 program committee, and giving a 15-20 minute presentation during the virtual HUG 2021 event
  • Participants’ slide deck, presentation recording, and final paper will be published on the HUG 2021 website. A selection of the best papers will be invited to submit to the Journal of High Performance Storage (JHPS).


  • For consideration, participants will submit an abstract (up to 250 words) of their proposed talk.
  • Upon acceptance, participants are responsible for a 15-20 minute presentation during the virtual HUG 2021 event.
  • Participants’ slide deck and presentation recording will be published on the HUG 2021 website.

You can submit your proposal online at

List of Topics

Submissions are encouraged in the following categories, but not limited to them.


  • HDF5 applications in science (any area of sciences)
  • HDF5 applications in industry (any industry)
  • Usage experiences
  • Novel and emerging usage
  • Exotic usage of HDF5 (surprise us!)


  • Performance issues
  • Debugging performance
  • I/O performance tuning strategies
  • Benchmarking

Developer Community

  • Language Wrappers (h5py / …)
  • Third-party libraries (netCDF-4 / HDFEOS / …)
  • Library features and capabilities
  • Virtual Object Layer (VOL) connector
  • Filter plugins
  • Virtual File Drivers

Standards based on HDF5

Data and metadata management

  • New storage architectures
  • Parallel I/O
  • Cloud I/O
  • In memory data management
  • Data compression and reduction
  • Data encoding and decoding
  • Data validation
  • Searching data and metadata
  • Indexing and querying


  • Visualization and analytics
  • AI (Machine learning, deep learning, etc.)
  • In situ / in transit analysis methods

HDF5 tools

  • Issues with command line tools and HDFView
  • Custom GUI and command line tools
  • HDF5 and workflow applications
  • High-level interfaces

Important Dates

Papers + Presentation Track:

  • Abstract (Up to 500 words) submission deadline: June 1st
  • Acceptance notifications: July 23rd
  • Full paper submission: Sept 1st

Presentation only track:

  • Abstract (Up to 250 words) submission deadline: Aug 1st
  • Presentation acceptance notifications: Aug 15th

Steering Committee

  • Elena Pourmal (The HDF Group)
  • Suren Byna (Lawrence Berkeley National Laboratory)
  • Quincey Koziol (Lawrence Berkeley National Laboratory)
  • Gerd Heber (The HDF Group)
  • Dax Rodriguez (The HDF Group)
  • Lori Cooper (The HDF Group)


The conference will be held in virtually, hosted by The HDF Group. More conference info will be posted on the conference website at


All questions about submissions should be emailed to


We are soliciting sponsors for this year’s HUG event. If interested in sponsorship, please contact Dax Rodriguez at