HDF5 version 1.11.2 currently under development ================================================================================ INTRODUCTION This document describes the differences between this release and the previous HDF5 release. It contains information on the platforms tested and known problems in this release. For more details check the HISTORY*.txt files in the HDF5 source. Note that documentation in the links below will be updated at the time of each final release. Links to HDF5 documentation can be found on The HDF5 web page: https://portal.hdfgroup.org/display/HDF5/HDF5 The official HDF5 releases can be obtained from: https://www.hdfgroup.org/downloads/hdf5/ Changes from Release to Release and New Features in the HDF5-1.10.x release series can be found at: https://portal.hdfgroup.org/display/HDF5/HDF5+Application+Developer%27s+Guide If you have any questions or comments, please send them to the HDF Help Desk: help@hdfgroup.org CONTENTS - New Features - Support for new platforms and languages - Bug Fixes since HDF5-1.10.2 - Supported Platforms - Tested Configuration Features Summary - More Tested Platforms - Known Problems New Features ============ Configuration: ------------- - Add option to execute swmr shell scripts from CMake. Option TEST_SHELL_SCRIPTS redirects processing into a separate ShellTests.cmake file for UNIX types. The tests execute the shell scripts if a SH program is found. (ADB - 2018/07/16) Library: -------- - Parallel Library: ----------------- - Fortran Library: ---------------- - C++ Library: ------------ - New wrappers Added the following items: + Class DSetAccPropList for the dataset access property list. + Wrapper for H5Dget_access_plist to class DataSet // Gets the access property list of this dataset. DSetAccPropList getAccessPlist() const; + Wrappers for H5Pset_chunk_cache and H5Pget_chunk_cache to class DSetAccPropList // Sets the raw data chunk cache parameters. void setChunkCache(size_t rdcc_nslots, size_t rdcc_nbytes, double rdcc_w0) // Retrieves the raw data chunk cache parameters. void getChunkCache(size_t &rdcc_nslots, size_t &rdcc_nbytes, double &rdcc_w0) + New operator!= to class DataType (HDFFV-10472) // Determines whether two datatypes are not the same. bool operator!=(const DataType& compared_type) + Wrappers for H5Oget_info2, H5Oget_info_by_name2, and H5Oget_info_by_idx2 (HDFFV-10458) // Retrieves information about an HDF5 object. void getObjinfo(H5O_info_t& objinfo, unsigned fields = H5O_INFO_BASIC) const; // Retrieves information about an HDF5 object, given its name. void getObjinfo(const char* name, H5O_info_t& objinfo, unsigned fields = H5O_INFO_BASIC, const LinkAccPropList& lapl = LinkAccPropList::DEFAULT) const; void getObjinfo(const H5std_string& name, H5O_info_t& objinfo, unsigned fields = H5O_INFO_BASIC, const LinkAccPropList& lapl = LinkAccPropList::DEFAULT) const; // Retrieves information about an HDF5 object, given its index. void getObjinfo(const char* grp_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t idx, H5O_info_t& objinfo, unsigned fields = H5O_INFO_BASIC, const LinkAccPropList& lapl = LinkAccPropList::DEFAULT) const; void getObjinfo(const H5std_string& grp_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t idx, H5O_info_t& objinfo, unsigned fields = H5O_INFO_BASIC, const LinkAccPropList& lapl = LinkAccPropList::DEFAULT) const; (BMR - 2018/07/22, HDFFV-10150, HDFFV-10458, HDFFV-1047) Java Library: ---------------- - JNI Read and Write Refactored variable-length functions, H5DreadVL and H5AreadVL, to correct dataset and attribute reads. New write functions, H5DwriteVL and H5AwriteVL, are under construction. (ADB - 2018/06/02, HDFFV10519) Tools: ------ - High-Level APIs: --------------- - C Packet Table API ------------------ - Internal header file -------------------- - Documentation ------------- - Support for new platforms, languages and compilers. ======================================= - Bug Fixes since HDF5-1.10.2 release ================================== Library ------- - H5Adelete H5Adelete failed when deleting the last "large" attribute that is stored densely via fractal heap/v2 b-tree. After removing the attribute, update the ainfo message. If the number of attributes goes to zero, remove the message. (VC - 2018/07/20, HDFFV-9277) - Error checks in h5stat and when decoding messages h5stat exited with seg fault/core dumped when errors are encountered in the internal library. Add error checks and --enable-error-stack option to h5stat. Add range checks when decoding messages: old fill value, old layout and refcount. (VC - 2018/07/11, HDFFV-10333) - If an HDF5 file contains a malformed compound datatype with a suitably large offset, the type conversion code can run off the end of the type conversion buffer, causing a segmentation fault. This issue was reported to The HDF Group as issue #CVE-2017-17507. NOTE: The HDF5 C library cannot produce such a file. This condition should only occur in a corrupt (or deliberately altered) file or a file created by third-party software. THE HDF GROUP WILL NOT FIX THIS BUG AT THIS TIME Fixing this problem would involve updating the publicly visible H5T_conv_t function pointer typedef and versioning the API calls which use it. We normally only modify the public API during major releases, so this bug will not be fixed at this time. (DER - 2018/02/26, HDFFV-10356) Configuration ------------- - Moved the location of gcc attribute. The gcc attribute(no_sanitize), named as the macro HDF_NO_UBSAN, was located after the function name. Builds with GCC 7 did not indicate any problem, but GCC 8 issued errors. Moved the attribute before the function name, as required. (ADB 2018/05/22, HDFFV-10473) - Reworked java test suite into individual JUnit tests. Testing the whole suite of java unit tests in a single JUnit run made it difficult to determine actual failures when tests would fail. Running each file set of tests individually, allows individual failures to be diagnosed easier. A side benefit is that tests for optional components of the library can be disabled if not configured. (ADB 2018/05/16, HDFFV-9739) - Converted CMake global commands ADD_DEFINITIONS and INCLUDE_DIRECTORIES to use target_* type commands. This change modernizes the CMake usage in the HDF5 library. In addition, there is the intention to convert to generator expressions, where possible. The exception is Fortran FLAGS on Windows Visual Studio. The HDF macros TARGET_C_PROPERTIES and TARGET_FORTRAN_PROPERTIES have been removed with this change in usage. The additional language (C++ and Fortran) checks have also been localized to only be checked when that language is enabled. (ADB 2018/05/08) - The --enable-debug/production configure flags are listed as 'deprecated' when they should really be listed as 'removed'. In the autotools overhaul several years ago, we removed these flags and implemented a new --enable-build-mode= flag. This was done because we changed the semantics of the modes and didn't want users to silently be exposed to them. The newer system is also more flexible and us to add other modes (like 'clean'). The --enable-debug/production flags are now listed as removed. (DER - 2018/05/31, HDFFV-10505) Performance ------------- - Fortran -------- - Tools ----- - High-Level APIs: ------ - Fortran High-Level APIs: ------ - Documentation ------------- - F90 APIs -------- - C++ APIs -------- - Adding default arguments to existing functions Added the following items: + Two more property list arguments are added to H5Location::createDataSet: const DSetAccPropList& dapl = DSetAccPropList::DEFAULT const LinkCreatPropList& lcpl = LinkCreatPropList::DEFAULT + One more property list argument is added to H5Location::openDataSet: const DSetAccPropList& dapl = DSetAccPropList::DEFAULT - Improvement C++ documentation Replaced the table in main page of the C++ documentation from mht to htm format for portability. Testing ------- Supported Platforms =================== Linux 2.6.32-696.16.1.el6.ppc64 gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-18) #1 SMP ppc64 GNU/Linux g++ (GCC) 4.4.7 20120313 (Red Hat 4.4.7-18) (ostrich) GNU Fortran (GCC) 4.4.7 20120313 (Red Hat 4.4.7-18) IBM XL C/C++ V13.1 IBM XL Fortran V15.1 Linux 3.10.0-327.10.1.el7 GNU C (gcc), Fortran (gfortran), C++ (g++) #1 SMP x86_64 GNU/Linux compilers: (kituo/moohan) Version 4.8.5 20150623 (Red Hat 4.8.5-4) Version 4.9.3, Version 5.2.0, Intel(R) C (icc), C++ (icpc), Fortran (icc) compilers: Version 17.0.0.098 Build 20160721 MPICH 3.1.4 compiled with GCC 4.9.3 SunOS 5.11 32- and 64-bit Sun C 5.12 SunOS_sparc (emu) Sun Fortran 95 8.6 SunOS_sparc Sun C++ 5.12 SunOS_sparc Windows 7 Visual Studio 2015 w/ Intel Fortran 16 (cmake) Windows 7 x64 Visual Studio 2012 w/ Intel Fortran 15 (cmake) Visual Studio 2013 w/ Intel Fortran 15 (cmake) Visual Studio 2015 w/ Intel Fortran 16 (cmake) Visual Studio 2015 w/ Intel C, Fortran 2017 (cmake) Visual Studio 2015 w/ MSMPI 8 (cmake) Windows 10 Visual Studio 2015 w/ Intel Fortran 16 (cmake) Windows 10 x64 Visual Studio 2015 w/ Intel Fortran 16 (cmake) Visual Studio 2017 w/ Intel Fortran 18 (cmake) Mac OS X Yosemite 10.10.5 Apple clang/clang++ version 6.1 from Xcode 7.0 64-bit gfortran GNU Fortran (GCC) 4.9.2 (osx1010dev/osx1010test) Intel icc/icpc/ifort version 15.0.3 Mac OS X El Capitan 10.11.6 Apple clang/clang++ version 7.3.0 from Xcode 7.3 64-bit gfortran GNU Fortran (GCC) 5.2.0 (osx1011dev/osx1011test) Intel icc/icpc/ifort version 16.0.2 Mac OS Sierra 10.12.6 Apple LLVM version 8.1.0 (clang/clang++-802.0.42) 64-bit gfortran GNU Fortran (GCC) 7.1.0 (swallow/kite) Intel icc/icpc/ifort version 17.0.2 Tested Configuration Features Summary ===================================== In the tables below y = tested n = not tested in this release C = Cluster W = Workstation x = not working in this release dna = does not apply ( ) = footnote appears below second table = testing incomplete on this feature or platform Platform C F90/ F90 C++ zlib SZIP parallel F2003 parallel Solaris2.11 32-bit n y/y n y y y Solaris2.11 64-bit n y/n n y y y Windows 7 y y/y n y y y Windows 7 x64 y y/y y y y y Windows 7 Cygwin n y/n n y y y Windows 7 x64 Cygwin n y/n n y y y Windows 10 y y/y n y y y Windows 10 x64 y y/y n y y y Mac OS X Mountain Lion 10.8.5 64-bit n y/y n y y y Mac OS X Mavericks 10.9.5 64-bit n y/y n y y ? Mac OS X Yosemite 10.10.5 64-bit n y/y n y y ? Mac OS X El Capitan 10.11.6 64-bit n y/y n y y ? CentOS 6.7 Linux 2.6.18 x86_64 GNU n y/y n y y y CentOS 6.7 Linux 2.6.18 x86_64 Intel n y/y n y y y CentOS 6.7 Linux 2.6.32 x86_64 PGI n y/y n y y y CentOS 7.2 Linux 2.6.32 x86_64 GNU y y/y y y y y CentOS 7.2 Linux 2.6.32 x86_64 Intel n y/y n y y y Linux 2.6.32-573.18.1.el6.ppc64 n y/n n y y y Platform Shared Shared Shared Thread- C libs F90 libs C++ libs safe Solaris2.11 32-bit y y y y Solaris2.11 64-bit y y y y Windows 7 y y y y Windows 7 x64 y y y y Windows 7 Cygwin n n n y Windows 7 x64 Cygwin n n n y Windows 10 y y y y Windows 10 x64 y y y y Mac OS X Mountain Lion 10.8.5 64-bit y n y y Mac OS X Mavericks 10.9.5 64-bit y n y y Mac OS X Yosemite 10.10.5 64-bit y n y y Mac OS X El Capitan 10.11.6 64-bit y n y y CentOS 6.7 Linux 2.6.18 x86_64 GNU y y y y CentOS 6.7 Linux 2.6.18 x86_64 Intel y y y n CentOS 6.7 Linux 2.6.32 x86_64 PGI y y y n CentOS 7.2 Linux 2.6.32 x86_64 GNU y y y n CentOS 7.2 Linux 2.6.32 x86_64 Intel y y y n Linux 2.6.32-573.18.1.el6.ppc64 y y y n Compiler versions for each platform are listed in the preceding "Supported Platforms" table. More Tested Platforms ===================== The following platforms are not supported but have been tested for this release. Linux 2.6.32-573.22.1.el6 GNU C (gcc), Fortran (gfortran), C++ (g++) #1 SMP x86_64 GNU/Linux compilers: (mayll/platypus) Version 4.4.7 20120313 Version 4.9.3, 5.3.0, 6.2.0 PGI C, Fortran, C++ for 64-bit target on x86-64; Version 17.10-0 Intel(R) C (icc), C++ (icpc), Fortran (icc) compilers: Version 17.0.4.196 Build 20170411 MPICH 3.1.4 compiled with GCC 4.9.3 Linux 3.10.0-327.18.2.el7 GNU C (gcc) and C++ (g++) compilers #1 SMP x86_64 GNU/Linux Version 4.8.5 20150623 (Red Hat 4.8.5-4) (jelly) with NAG Fortran Compiler Release 6.1(Tozai) GCC Version 7.1.0 OpenMPI 3.0.0-GCC-7.2.0-2.29 Intel(R) C (icc) and C++ (icpc) compilers Version 17.0.0.098 Build 20160721 with NAG Fortran Compiler Release 6.1(Tozai) Linux 3.10.0-327.10.1.el7 MPICH 3.2 compiled with GCC 5.3.0 #1 SMP x86_64 GNU/Linux (moohan) Linux 2.6.32-573.18.1.el6.ppc64 MPICH mpich 3.1.4 compiled with #1 SMP ppc64 GNU/Linux IBM XL C/C++ for Linux, V13.1 (ostrich) and IBM XL Fortran for Linux, V15.1 Debian 8.4 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1 x86_64 GNU/Linux gcc, g++ (Debian 4.9.2-10) 4.9.2 GNU Fortran (Debian 4.9.2-10) 4.9.2 (cmake and autotools) Fedora 24 4.7.2-201.fc24.x86_64 #1 SMP x86_64 x86_64 x86_64 GNU/Linux gcc, g++ (GCC) 6.1.1 20160621 (Red Hat 6.1.1-3) GNU Fortran (GCC) 6.1.1 20160621 (Red Hat 6.1.1-3) (cmake and autotools) Ubuntu 16.04.1 4.4.0-38-generic #57-Ubuntu SMP x86_64 GNU/Linux gcc, g++ (Ubuntu 5.4.0-6ubuntu1~16.04.2) 5.4.0 20160609 GNU Fortran (Ubuntu 5.4.0-6ubuntu1~16.04.2) 5.4.0 20160609 (cmake and autotools) Known Problems ============== At present, metadata cache images may not be generated by parallel applications. Parallel applications can read files with metadata cache images, but since this is a collective operation, a deadlock is possible if one or more processes do not participate. Known problems in previous releases can be found in the HISTORY*.txt files in the HDF5 source. Please report any new problems found to help@hdfgroup.org.