HDF5 version 1.8.5-pre2 currently under development ================================================================================ INTRODUCTION ============ This document describes the differences between HDF5-1.8.4 and HDF5 1.8.4-*, and contains information on the platforms tested and known problems in HDF5-1.8.4-*. For more details, see the files HISTORY-1_0-1_8_0_rc3.txt and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source. Links to the HDF5 1.8.4 source code, documentation, and additional materials can be found on the HDF5 web page at: http://www.hdfgroup.org/products/hdf5/ The HDF5 1.8.4 release can be obtained from: http://www.hdfgroup.org/HDF5/release/obtain5.html User documentation for 1.8.4 can be accessed directly at this location: http://www.hdfgroup.org/HDF5/doc/ New features in the HDF5-1.8.x release series, including brief general descriptions of some new and modified APIs, are described in the "What's New in 1.8.0?" document: http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html All new and modified APIs are listed in detail in the "HDF5 Software Changes from Release to Release" document, in the section "Release 1.8.4 (current release) versus Release 1.8.3": http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html 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, Languages, and Compilers - Bug Fixes since HDF5-1.8.4 - Platforms Tested - Supported Configuration Features Summary - Known Problems New Features ============ Configuration ------------- - CMake Early Access, this release adds support for building hdf5 using the CMake system. Initial work has targeted Windows, but other platforms can be used. See the CMake.TXT file for more information. Version 2.8.1 of CMake is required. - Configure now adds appropriate defines for supporting large (64-bit) files on all systems, where supported, by default, instead of only linux. This largefile support is controllable with the --enable-largefile configure option. The linux-specific --enable-linux-lfs option has been deprecated in favor of this new option. (MAM - 2010/05/05 - 1772/1434) - Upgraded versions of autotools used to generate configuration suite. We now use Automake 1.11.1, Autoconf 2.65, and Libtool 2.2.6b. (MAM 2010/04/15) - Added the xlc-* and mpcc_r-* BASENAME patterns to be recognized as IBM compilers so that the ibm compiler options can be added properly. This allows non-system-default compiler command names (e.g. xlc-m.n.k.l) be recognized. AKC 2009/11/26. Library ------- - Greatly improved performance of extending a dataset with early allocation. (NAF - 2010/03/24 - 1637) - Added support for filtering densely stored groups. Many of the API functions related to filters have been extended to support dense groups as well as datasets. Pipeline messages can now be stored in a group's object header. (NAF/QAK - 2009/11/3) Parallel Library ---------------- - None Tools ----- - h5diff: fixed incorrect behavior (hang) in parallel mode when specify invalid options (ex: -v and -q) (JKM 2010/02/17) - h5diff: Add new flag --no-dangling-links. (refer to --help for details) (JKM - 2010/02/10) - h5diff: Add new flag --follow-symlinks. (refer to --help for details) (JKM - 2010/01/25) - h5diff: fix for displaying garbage value on LE machine for BE data. (JKM - 2009/11/20) High-Level APIs --------------- - None F90 API ------- - None C++ API ------- - New member functions + Overloaded CommonFG::getObjnameByIdx to take char* for name + Overloaded CommonFG::getObjTypeByIdx to return type name as a char*. (BMR - 2010/05/10) + DataSet::getInMemDataSize() to simplify getting the dataset's data size in memory. (BMR - 2009/07/26) Support for New Platforms, Languages, and Compilers =================================================== - None Bug Fixes since HDF5-1.8.4 ========================== Configuration ------------- - Fixed various "strict aliasing" problems, allowing higher levels of compiler optimization (in particular, allowing '-O3' to work with recent versions of GCC). QAK - 2010/04/26 Library ------- - Fixed a file corruption bug that could happen when shrinking a compressed dataset. (NAF - 2010/05/20) - Fixed some memory leaks in VL datatype conversion when strings are used as fill values. (MAM - 2010/05/12 - BZ# 1826) - Fixed a bug when copying objects with NULL references with the H5O_COPY_EXPAND_REFERENCE_FLAG flag set. (NAF - 2010/04/08 - 1815) - Added a mechanism to the H5I interface to save returned object ID structures for immediate re-use if needed. This addresses a potential performance issue by delaying the case when the next ID to be registered has grown so large that it wraps around and needs to be checked to see if it is available for distribution. (MAM - 2010/03/15 - 1730) - Files can now be concurrently opened more than once using the core file driver, as long as the backing store is used. (NAF - 2010/03/09) - Added support for H5O_COPY_EXPAND_EXT_LINK_FLAG to H5Ocopy. External links will now be expanded if this flag is set. (NAF - 2010/03/05 - 1733) - Fixed a bug where the library, when traversing an external link, would reopen the source file if nothing else worked. (NAF - 2010/03/05) - Fixed a bug where fractal heap IDs for attributes and shared object header messages could be incorrectly encoded in the file for files created on big-endian platforms. Please see http://www.hdfgroup.org/HDF5/release/known_problems if you suspect you have a file with this problem. QAK - 2010/02/23 - 1755 - Fixed an intermittent bug in the b-tree code which could be triggered by expanding and shrinking chunked datasets in certain ways. (NAF - 2010/02/16) - H5Tdetect_class said a VL string is a string type. But when it's in a compound type, it said it's a VL type (Bug #1584). I fixed it to be consistent. It always return string type. (SLU - 2009/12/10) - Allow "child" files from external links to be correctly located when relative to a "parent" file that is opened through a symbolic link. (QAK - 2009/12/01) Parallel Library ---------------- - None EIP - 2009/10/21 Tools ----- - Fixed H5Rcreate fails if passing in a -1 for the dataspace identifier (ADB 2010/4/28) - Fixed h5ls to return exit code 1 (error) when non-existent file is specified. bug#1793. (JKM 2010/04/27) - h5copy failed to copy dangling link when the link is specified directly. bug#1817. (JKM 2010/04/22) - h5repack lost attributes from a dataset of reference type. bug#1726. (JKM 2010/3/25) - h5repack sets NULL for object reference value for group or named datatype. bug#1814. (JKM 2010/03/19) - None EIP - 2009/10/21 F90 API ------ - None EIP - 2009/10/21 C++ API ------ - The constructor PropList::PropList(id) was fixed to act properly according to the nature of 'id'. When 'id' is a property class id, a new property list will be created. When 'id' id a property list id, a copy of the property list will be made. (BMR - 2010/5/9) - The parameters 'size' and 'bufsize' in CommonFG::getLinkval and CommonFG::getComment, respectively, now have default values for user's convenience. (BMR - 2009/10/23) - NULL pointer accessing was fixed, bugzilla 1061. (BMR - 2009/10/05) - read/write methods of DataSet and Attribute classes were fixed to handle string correctly. (BMR - 2009/07/26) High-Level APIs: ------ - Fixed a bug in H5DSattach_scale, H5DSis_attached and H5DSdetach_scale caused by using H5Tget_native_type function to determine the native type for reading REFERENCE_LIST attribute. The bug was exposed on Mac PPC. (EIP - 2010/05/22 -1851) - Fixed a bug in the H5DSdetach_scale function when 0 bytes were allocated after the last reference to a dim. scale was removed from the list of references in a VL element of the DIMENSION_LIST attribute; modified the function to comply with the Spec: DIMENSION_LIST attribute is deleted now when no dimension scales left attached. (EIP - 2010/05/14 -1822) Fortran High-Level APIs: ------ - None EIP - 2009/10/21 Platforms Tested ================ The following platforms and compilers have been tested for this release. AIX 5.3 xlc 7.0.0.8, 8.0.0.20, 9.0.0.4 (LLNL Up) xlC 7.0.0.8, 8.0.0.20, 9.0.0.4 xlf 9.1.0.8, 10.1.0.9, 11.1.0.7 mpcc_r 7.0.0.8 mpxlf_r 09.01.0000.0008 Cray XT3 (2.0.41) cc (pgcc) 7.1-4 (SNL red storm) ftn (pgf90) 7.1-4 CC (pgCC) 7.1-4 FreeBSD 6.3-STABLE i386 gcc 3.4.6 [FreeBSD] 20060305 (duty) g++ 3.4.6 [FreeBSD] 20060305 gcc 4.3.4 20090419 g++ 4.3.4 20090419 gfortran 4.3.4 20090419 FreeBSD 6.3-STABLE amd64 gcc 3.4.6 [FreeBSD] 20060305 (liberty) g++ 3.4.6 [FreeBSD] 20060305 gcc 4.4.1 20090421 g++ 4.4.1 20090421 gfortran 4.4.1 20090421 Linux 2.6.18-128.1.6.el5xen gcc (GCC) 4.1.2 20080704 and 4.4.2 #1 SMP i686 i686 i386 GNU Fortran (GCC) 4.1.2 20080704 and 4.4.2 (jam) g++ (GCC) 4.1.2 20080704 and 4.4.2 G95 (GCC 4.0.3 (g95 0.93!) Apr 21 2010) Absoft 32-bit Fortran 95 10.0.7 PGI C, Fortran, C++ 10.4-0 32-bit Intel(R) C, C++, Fortran Compilers for 32-bit applications, Version 11.1 Build 20090827 MPICH mpich2-1.0.8 compiled with gcc 4.1.2 and GNU Fortran (GCC) 4.1.2 Linux 2.6.18-164.el5 #1 SMP gcc 4.1.2 20080704 and gcc 4.4.2 x86_64 GNU/Linux GNU Fortran (GCC) 4.1.2 20080704 and 4.4.2 (amani) g++ (GCC) 4.1.2 20080704 and 4.4.2 G95 (GCC 4.0.3 (g95 0.93!) Apr 21 2010) Intel(R) C, C++, Fortran Compilers for applications running on Intel(R) 64, Version 11.1 Build 20090827. PGI C, Fortran, C++ Version 10.4-0 for 32 & 64-bit target on x86-64 MPICH mpich2-1.0.8 compiled with gcc 4.1.2 and GNU Fortran (GCC) 4.1.2 Linux 2.6.16.54-0.2.5 #1 Intel(R) C++ Version 11.0.074 SGI Altix SMP ia64 Intel(R) Fortran Itanium(R) Version 11.0.074 (cobalt) SGI MPI 1.38 SunOS 5.10 32- and 64-bit Sun C 5.9 SunOS_sparc Patch 124867-14 (linew) Sun Fortran 95 8.3 SunOS_sparc Patch 127000-13 Sun C++ 5.9 SunOS_sparc Patch 124863-23 Intel Xeon Linux 2.6.18- Intel(R) C++ Version 10.0.026 92.1.10.el5_lustre.1.6.6smp- Intel(R) Fortran Compiler Version 10.0.026 perfctr #7 SMP Open MPI 1.2.2 (abe) MVAPICH2-0.9.8p28p2patched-intel-ofed-1.2 compiled with icc v10.0.026 and ifort 10.0.026 Linux 2.6.9-55.0.9.EL_lustre Intel(R) C, C++, Fortran Compilers for .1.4.11.1smp #1 SMP applications running on Intel(R) 64, SMP x86_64 GNU/Linux Versions 10.1. (SNL Thunderbird) Linux 2.6.18-76chaos #1 SMP Intel(R) C, C++, Fortran Compilers for SMP x86_64 GNU/Linux applications running on Intel(R) 64, (SNL Glory) Versions 10.1. Windows XP Visual Studio 2008 w/ Intel Fortran 10.1 Cygwin(native gcc compiler and gfortran) MinGW(5.1.6 with gcc 4.4.0) Windows XP x64 Visual Studio 2008 w/ Intel Fortran 10.1 Windows Vista Visual Studio 2008 w/ Intel Fortran 10.1 Windows Vista x64 Visual Studio 2008 w/ Intel Fortran 10.1 MAC OS 10.5.6 (Intel) i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 GNU Fortran (GCC) 4.3.0 20070810 G95 (GCC 4.0.3 (g95 0.91!) Apr 24 2008) Intel C, C++ and Fortran compilers 10.1 OpenVMS Alpha V8.3 HP C V7.3-009 HP C++ V7.3-009 HP Fortran V8.0-1-104669-48GBT Supported Configuration Features Summary ======================================== In the tables below y = tested and supported n = not supported or 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 parallel Solaris2.10 32-bit n y n y y y Solaris2.10 64-bit n y n y y y Windows XP n y(4) n(4) y y y Windows XP x64 n y(4) n(4) y y y Windows Vista n n n y y y Mac OS X 10.5 Intel n y n y y y AIX 5.3 32- and 64-bit n y n y y n FreeBSD 6.3-STABLE 32&64 bit n y n y y y RedHat EL4 2.6.9-42 i686 GNU (1) W y y y y y y RedHat EL5 2.6.18-128 i686 GNU (1)W y y(2) y y y y RedHat EL5 2.6.18-128 i686 Intel W n y n y y n RedHat EL5 2.6.18-128 i686 PGI W n y n y y n SuSe Linux 2.6.16 x86_64 GNU (1) W y y(3) y y y y SuSe Linux 2.6.16 x86_64 Intel W n y n y y n SuSe Linux 2.6.16 x86_64 PGI W n y n y y y SuSe Linux 2.6.16 SGI Altix ia64 C y y y y y y RedHat EL4 2.6.18 Xeon Lustre C y y y y y n Cray XT3 2.0.62 y y y y y n OpenVMS Alpha V8.3 n y n y y n Platform Shared Shared Shared Thread- C libs F90 libs C++ libs safe Solaris2.10 32-bit y y y y Solaris2.10 64-bit y y y y Windows XP y y(4) y y Windows XP x64 y y(4) y y Windows Vista y n n y Windows Vista x64 y n n y Mac OS X 10.5 y n y n AIX 5.3 32- and 64-bit n n n n FreeBSD 6.3-STABLE 32&64 bit y n y y RedHat EL4 2.6.9-42 i686 GNU (1) W y y y y RedHat EL5 2.6.18-128 i686 GNU (1)W y y(2) y y RedHat EL5 2.6.18-128 i686 Intel W y y y n RedHat EL5 2.6.18-128 i686 PGI W y y y n SuSe Linux 2.6.16 x86_64 GNU (1) W y y y y SuSe Linux 2.6.16 x86_64 Intel W y y y n SuSe Linux 2.6.16 x86_64 PGI W y y y n SuSe Linux 2.6.16 SGI Altix ia64 C y n RedHat EL4 2.6.18 Xeon Lustre C y y y n Cray XT3 2.0.62 n n n n OpenVMS Alpha V8.3 n n n n (1) Fortran compiled with g95. (2) With PGI and Absoft compilers. (3) With PGI compiler for Fortran. (4) Using Visual Studio 2008 or Cygwin Compiler versions for each platform are listed in the preceding "Platforms Tested" table. Known Problems ============== * The library's test dt_arith.c showed a compiler's rounding problem on Cygwin when converting from unsigned long long to long double. The library's own conversion works fine. We defined a macro for Cygwin to skip this test until we can solve the problem. Please see bug #1813. SLU - 2010/5/5 * All the VFL drivers aren't backward compatible. In H5FDpublic.h, the structure H5FD_class_t changed in 1.8. There is new parameter added to get_eoa and set_eoa callback functions. A new callback function get_type_map was added in. The public function H5FDrealloc was taken out in 1.8. The problem only happens when users define their own driver for 1.6 and try to plug in 1.8 library. Because there's only one user complaining about it, we (Elena, Quincey, and I) decided to leave it as it is (see bug report #1279). Quincey will make a plan for 1.10. SLU - 2010/2/2 * MinGW has a missing libstdc++.dll.a library file and will not successfully link C++ applications/tests. Do not use the enable-cxx configure option. Read all of the INSTALL_MINGW.txt file for all restrictions. ADB - 2009/11/11 * Parallel mode in AIX will fail some of the testcheck_version.sh tests where it treats "exit(134) the same as if process 0 had received an abort signal. This is fixed and will be available in the next release. AKC - 2009/11/3 * Some tests in tools/h5repack may fail in AIX systems when -q32 mode is used. The error is due to insufficient memory requested. Request a large amount of runtime memory by setting the following environment variable for more memory. LDR_CNTRL=MAXDATA=0x20000000@DSA AKC - 2009/10/31 * The PathScale MPI implementation, accessing a Panasas file system, would cause H5Fcreate() with H5F_ACC_EXCL to fail even when the file is not existing. This is due to the MPI_File_open() call failing if the amode has the MPI_MODE_EXCL bit set. (See bug 1468 for details.) AKC - 2009/8/11 * Parallel tests failed with 16 processes with data inconsistency at testphdf5 / dataset_readAll. Parallel tests also failed with 32 and 64 processes with collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks with MPI IO. CMC - 2009/04/28 * For gcc v4.3 and v4.4, with production mode, if -O3 is used, H5Tinit.c would fail to compile. Actually bad H5Tinit.c is produced. If -O (same as -O1) is used, H5Tinit.c compiled okay but test/dt_arith would fail. When -O0 (no optimizatio) is used, H5Tinit.c compilete okay and all tests passed. Therefore, -O0 is imposed for v4.3 and v4.4 of gcc. AKC - 2009/04/20 * For Red Storm, a Cray XT3 system, the tools/h5ls/testh5ls.sh and tools/h5copy/testh5copy.sh will fail some of its sub-tests. These sub-tests are expected to fail and should exit with a non-zero code but the yod command does not propagate the exit code of the executables. Yod always returns 0 if it can launch the executable. The test suite shell expects a non-zero for this particular test, therefore it concludes the test has failed when it receives 0 from yod. Skip all the "failing" test for now by changing them as following. ======== Original tools/h5ls/testh5ls.sh ========= TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5 ======== Change to =============================== echo SKIP TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5 ================================================== ======== Original tools/h5copy/testh5copy.sh ========= TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets -d grp_rename TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets -d /grp_rename/grp_dsets TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested H5LSTEST $FILEOUT ======== Change to =============================== echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets -d grp_rename echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets -d /grp_rename/grp_dsets echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested echo SKIP H5LSTEST $FILEOUT ================================================== AKC - 2008/11/10 * For Red Storm, a Cray XT3 system, the yod command sometimes gives the message, "yod allocation delayed for node recovery". This interferes with test suites that do not expect seeing this message. See the section of "Red Storm" in file INSTALL_parallel for a way to deal with this problem. AKC - 2008/05/28 * On Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, use -mp -O1 compilation flags to build the libraries. A higher level of optimization causes failures in several HDF5 library tests. * On mpich 1.2.5 and 1.2.6, if more than two processes contribute no IO and the application asks to do collective IO, we have found that when using 4 processors, a simple collective write will sometimes be hung. This can be verified with t_mpi test under testpar. * A dataset created or rewritten with a v1.6.3 library or after cannot be read with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled. There was a bug in the calculation of the Fletcher32 checksum in the library before v1.6.3; the checksum value was not consistent between big- endian and little-endian systems. This bug was fixed in Release 1.6.3. However, after fixing the bug, the checksum value was no longer the same as before on little-endian system. Library releases after 1.6.4 can still read datasets created or rewritten with an HDF5 library of v1.6.2 or before. SLU - 2005/6/30 * On IBM AIX systems, parallel HDF5 mode will fail some tests with error messages like "INFO: 0031-XXX ...". This is from the command `poe'. Set the environment variable MP_INFOLEVEL to 0 to minimize the messages and run the tests again. The tests may fail with messages like "The socket name is already in use", but HDF5 does not use sockets. This failure is due to problems with the poe command trying to set up the debug socket. To resolve this problem, check to see whether there are many old /tmp/s.pedb.* files staying around. These are sockets used by the poe command and left behind due to failed commands. First, ask your system administrator to clean them out. Lastly, request IBM to provide a means to run poe without the debug socket. * The --enable-static-exec configure flag will only statically link libraries if the static version of that library is present. If only the shared version of a library exists (i.e., most system libraries on Solaris, AIX, and Mac, for example, only have shared versions), the flag should still result in a successful compilation, but note that the installed executables will not be fully static. Thus, the only guarantee on these systems is that the executable is statically linked with just the HDF5 library. * There is also a configure error on Altix machines that incorrectly reports when a version of Szip without an encoder is being used. * On FREE-BSD systems when shared libraries are disabled, make install fails in install-examples with the error '"Makefile", line 635: Need an operator'. When this error occurs removing or commenting out the line "export LD_LIBRARY_PATH=$(LL_PATH)" (line 635 in examples/Makefile). will allow make install to finish installing examples. The problem will be fixed in the next release. LRK - 2010/05/26 * On cobalt, an SGI Altix SMP ia64 system, Intel compiler version 10.1 (which is the default on that system) does not work properly, and results in failures during make check (in a static build) and make installcheck (during a shared build). This appears to be a compiler optimization problem. Reducing optimization by setting CFLAGS to -O1 or below resolves the issue. Alternatively, using a newer version of the compiler (11.0) also works as intended. MAM - 2010/06/01