HDF Newsletter #130

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                             Newsletter #130
                            November 15, 2012

CONTENTS
  - Release of HDF-Java Products 2.9
     . Highlights
     . Future Changes to Supported Platforms

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

Release of HDF-Java Products 2.9

The HDF-Java 2.9 release is now available. This release was built with
HDF 4.2.8 and HDF5-1.8.10 using jdk 1.7.x. It can be obtained from The
HDF Group Downloads page:

    http://www.hdfgroup.org/downloads/index.html

For information on HDF-Java, see the HDF-Java home page:

    http://www.hdfgroup.org/hdf-java-html/

Highlights
----------

This is a maintenance release with no major changes in functionality. It
includes bug fixes and some minor enhancements.

Here are the highlights:

    Fixed 29 bugs including the following:
         Fixed HDFView to display 64-bit unsigned integers
         Fixed HDFView to display SCALAR arrays
         Fixed a fill value problem on Mac machines
         Fixed ImageView showing the wrong values for 3D arrays

    Added 10 minor enhancements including the following:
         Added a feature to show groups/attributes in creation order
         Excluded fill values from data calculations
         Added a 'reload' option to quickly close and reopen a file

For more information on the current release, please read "About This Release"
at:
    http://www.hdfgroup.org/hdf-java-html/hdfview/UsersGuide/ug01introduction.html#ug01release

Future Changes to Supported Platforms
-------------------------------------

Please note that this is the last release to support 32-bit Mac and 32-bit
Solaris. Future releases will not support these two platforms.

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For questions regarding these or other HDF issues, contact:

    help@hdfgroup.org

Dear Barbara,

Is there a version of HDF that support SWMR ? ( single write multiple read
from different processes) ?

Shashi

Hi Shashi,

Is there a version of HDF that support SWMR ? ( single write multiple read
from different processes) ?

No, the current version of HDF5 does not support the SWMR feature.
The SWMR feature will be available in HDF5-1.10.

It is possible to read a file while it is being written to by following the steps listed in this FAQ:

    http://www.hdfgroup.org/hdf5-quest.html#grdwt

There are also several FAQs regarding Thread-safety and Concurrent Access
in HDF5. You can see those here:

    http://www.hdfgroup.org/hdf5-quest.html#GENERAL

-Barbara
help@hdfgroup.org