HDF News

CONTENTS Release of HDF5-1.10.2 Release of HDF5-1.10.2 The HDF5-1.10.2 release is now available for download from: https://www.hdfgroup.org/downloads/hdf5/ The source code (only) can also be obtained from: https://portal.hdfgroup.org/display/support/HDF5+1.10.2 User documentation for HDF5-1.10 can be accessed here: https://portal.hdfgroup.org/display/HDF5/ This release contains several major new features and changes, including the following: Parallel HDF5 includes several improvements: Compressed datasets can now be written using the MPI I/O driver. Optimizations were added to improve performance of the HDF5 parallel open/close/flush operations. MPI I/O transfers now allow reading or writing of more than 2GB of data in a single I/O operation. The following vulnerabilities were addressed: CVE-2017-17505: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17505 CVE-2017-17506: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17506 CVE-2017-17508: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17508 CVE-2017-17509: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17509 The following changes were added to the HDF5 library: The H5F_LIBVER_V18 parameter can now be specified in the H5Pset_libver_bounds()...

CONTENTS Release of HDF5-1.8.20 Release of HDF5-1.8.20 The HDF5-1.8.20 release is now available. It can be obtained from The HDF Group Support Download page: https://support.hdfgroup.org/downloads/ It can also be obtained directly from: https://support.hdfgroup.org/HDF5/release/obtain518.html HDF5-1.8.20 is a minor release with a few new features and changes. Important changes include: An issue with H5Zfilter_avail was fixed where it was not finding available plugins. Improvements were made to the h5repack, h5ls, h5dump, h5diff, and h5import utilities.In particular, please be aware that the behavior of the h5repack utility changed. A parameter was added to the "UD=" option of h5repack to allow the user defined filter flag to be changed to either H5Z_FLAG_MANDATORY (0) or H5Z_FLAG_OPTIONAL (1).An example of the command with the new parameter is shown here: h5repack -f UD=307,0,1,9...

The HDF Group is pleased to announce Ann Johnson has joined as the new Director of Engineering, reporting to David Pearah, CEO. Ann was most recently the Vice President of Engineering at Reservoir Labs, responsible for global engineering operations, personnel, and project management. Prior to Reservoir Labs, Ann held several executive management positions at SiCortex, ClearSpeed Technology, and Silicon Graphics. In her new role as Director of Engineering, Ann will be part of The HDF Group’s senior management team—working with all facets of the organization while overseeing and managing software development, quality assurance, and dev ops teams. Her specialized skillsets and past experiences building and directing global technical teams will greatly support The HDF Group’s expansion into new product and service verticals. “We...

Greetings! The HDF Group is pleased to launch our new website on the evening of Tuesday, October 17th. Our new site features a new design, a new logo, and other improvements—all based on feedback from our users. You’ll find improved and simplified navigation with a better layout focused on the needs of our customers and users. The new site also clears the way for future updates: In the next year, we will also launch an updated support site, a new forum for user support, new products, and more. No big growth is complete without growing pains, but fortunately all you’ll experience is a brief period of site downtime from 5-7 p.m. CDT on Tuesday, October 17th. The URL will remain the same:...

Version 2.2.3 of the h4toh5 Conversion Library and Tools is now available from the HDF Downloads page: https://support.hdfgroup.org/downloads/index.html#h4h5 It can be obtained directly from: https://support.hdfgroup.org/products/hdf5_tools/h4toh5/download.html This release was tested with HDF 4.2.13, HDF5-1.8.19, and HDF5-1.10.1, and contains many changes, including:  Numerous improvements were made to the tools. For example: h4toh5 now follows the HDF5 dimension scale specification to handle HDF4 SDS dimensions "h4toh5 -eos" can now convert a 1D HDF-EOS2 swath to HDF5. Memory leaks in the library and tools were fixed. Please see the Release Notes for complete details on what is new with this release: https://support.hdfgroup.org/ftp/HDF5/h4toh5/src/h4h5tools-2.2.3-RELEASE.txt ...

The HDFView 2.14 and HDF Java 3.3.2 release is now available. This release supports HDF5-1.8 and 32-bit object identifiers and was tested with HDF5-1.8.19 and HDF 4.2.13. It can be obtained from: https://support.hdfgroup.org/downloads/index.html It can also be obtained directly from: https://support.hdfgroup.org/products/java/release/download.html More information on this release can be found on the HDF Java home page. This is a maintenance release with a few bug fixes. It includes changes to the error exception handling in the Java HDF wrappers. These changes fix an issue that affected the display of HDF4 files in HDFView....

CONTENTS Release of HDF 4.2.13 Release of HDF 4.2.13 The HDF 4.2.13 release is now available. It can be obtained from the HDF4 home page: https://support.hdfgroup.org/products/hdf4/ HDF 4.2.13 is a minor release with a few changes, including: Support was added for macOS Sierra 10.12.5. Several memory leaks were fixed. The minimum CMake version supported is 3.2.2. For detailed information regarding this release, please see the Release Notes....

CONTENTS Release of HDF5-1.8.19 Release of HDF5-1.8.19 The HDF5-1.8.19 release is now available. It can be obtained from the HDF5 Download page: https://www.hdfgroup.org/downloads/hdf5/ It can also be obtained directly from: https://support.hdfgroup.org/HDF5/release/obtain518.html HDF5-1.8.19 is a minor release with a few new features and changes. Important changes include: Several H5PL (C) APIs were added to manipulate the entries of the plugin path table: H5PLappend, H5PLget, H5PLinsert, H5PLprepend, H5PLremove, H5PLreplace, and H5PLsize. H5Dget_chunk_storage_size (C) was added to obtain the storage size of a chunk in the file. This API was specifically added in support of H5DOread_chunk, but may also be useful for other purposes. H5DOread_chunk (High Level C) was added to read a raw data chunk directly from a dataset in a file, bypassing HDF5's internal data transfer pipeline, including...

Release of HDF5-1.8.18 (Newsletter #152) - 11/16/16 Release of HDF Java Products for HDF5-1.8 (HDFView 2.13, HDF JNI 3.2.1) (Newsletter #151) - 7/25/16 Release of HDF 4.2.12 (Newsletter #150) - 6/30/16 Release of HDF5-1.10.0-patch (Bulletin) - 5/26/16 Release of HDF5-1.8.17 (Newsletter #149) - 5/13/16 Release of HDF5-1.10.0 (Newsletter #148) - 3/31/16 ...

David Pearah, The HDF Group Hello again, HDF User Community, As I mentioned in my last blog post -- HDF: The Next 30 Years (Part 2) -- we're looking for ways to better engage our users, which includes providing better tools for you to get support from the HDF Community.  We are looking for your input on three things: the HDF User Forum, Roadmap for HDF5, and Focus Groups - please take a few minutes to complete these short surveys and let us know what you think! Discussion Board and Listserv Forum Feedback:  LINK  We currently provide a listserv as the primary way that folks post questions and feedback to the community, and we would like your feedback since we're looking at web-based tools to complement or...