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                            Newsletter #148
                             March 31, 2016

CONTENTS
 - Release of HDF5-1.10.0

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Release of HDF5-1.10.0
======================

We are very pleased to announce the release of HDF5-1.10.0.

Links to the HDF5 1.10.0 source code, documentation, and additional materials
can be found on the HDF5 web page at:

  https://www.hdfgroup.org/HDF5/

The HDF5 1.10.0 release can be obtained directly from:

  https://www.hdfgroup.org/HDF5/release/obtain5110.html

User documentation for 1.10.0 can be accessed from:

  https://www.hdfgroup.org/HDF5/doc/

This release contains many important new features and changes, including those
listed below. The features marked with * use new extensions to the HDF5 file
format. 

 o The Single-Writer / Multiple-Reader or SWMR feature enables users to read
   data while concurrently writing it. *

 o The virtual dataset (VDS) feature enables users to access data in a
   collection of HDF5 files as a single HDF5 dataset and to use the HDF5 APIs
   to work with that dataset. *

   NOTE: There is a known issue with the h5repack utility when using it to
   modify the layout of a VDS. We understand the issue and are working on a
   patch for it.

 o New indexing structures for chunked datasets were added to support SWMR
   and to optimize performance. *
 
 o Persistent free file space can now be managed and tracked for better
   performance. *
  
 o The HDF5 Collective Metadata I/O feature has been added to improve
   performance when reading and writing data collectively with Parallel HDF5.

 o The Java HDF5 JNI has been integrated into HDF5.

 o Changes were made in how autotools handles large file support (LFS).

 o New options for the storage and filtering of partial edge chunks have been
   added for performance tuning.*

Files created with the new extensions will not be readable by applications
based on the HDF5-1.8 library.

Please refer to the following document which describes the new features in this
release:

  https://www.hdfgroup.org/HDF5/docNewFeatures/

All new and modified APIs are listed in detail in the "HDF5 Software Changes
from Release to Release" document: 

  https://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

For detailed information regarding this release see the release notes:

  https://www.hdfgroup.org/ftp/HDF5/releases/hdf5-1.10/hdf5-1.10.0/src/hdf5-1.10.0-RELEASE.txt


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For questions regarding these or other HDF issues, contact:

   help@hdfgroup.org