Strategies and Software to Optimize HDF5/netCDF-4 Files for the Cloud

This poster from Aleksandar Jelenak and Dana Robinson of The HDF Group runs through several strategies to optimize HDF5 and netCDF-4 files for the cloud, including consolidating internal metadata, setting a large chunk size, and avoiding or minimizing the use of variable length datatypes. Several code examples for each situation are included. You’re going to

Workarounds for OpenMPI bug exposed by make check in HDF5 1.13.3

While developing HDF5 1.13.3, a bug was discovered in OpenMPI’s default I/O layer, affecting OpenMPI versions 4.1.0-4.1.4. It will be fixed in future releases. This bug can cause incorrect results from MPI I/O requests, unless one of the following parameters is passed to mpirun…

HDF5 C++ Webinar Followup

Question and answers from the HDF5 C++ Webinar on January 24th, 2019. Read the followup questions and answers from presentations on H5CPP from Steven Varga, h5cpp Wrapper from Martin Shetty and Eugen Wintersberger and Ntuple: Tabular Data in HDF5 with C++ from Chris Green and Marc Paterno.

Webinar Announcement: NeXpy – A GUI Toolbox for Analyzing HDF5 data

NeXpy is a GUI application designed to to facilitate creating, reading, visualizing, and manipulating data stored in HDF5 files. Although it was primarily designed to handle neutron and x-ray scattering stored using the NeXus format, most of its functionality is applicable to other types of scientific data stored in HDF5 files or even imported in a variety of formats. Join us for a webinar on Wednesday, Nov 16, 2022 09:00 AM Central Time (US and Canada).

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