HDF Newsletter 66

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CONTENTS

     http://hdf.ncsa.uiuc.edu/HDF5/

     http://hdf.ncsa.uiuc.edu/HDF5/doc/

    http://hdf.ncsa.uiuc.edu/HDF5/release/SuppConfigFeats.html

• A helper script called ``h5cc'', which helps compilation of HDF5 programs, is now distributed with HDF5. See the reference manual for information on how to use this feature.

• Changed prototype for H5Awrite from:

        H5Awrite(hid_t attr_id, hid_t type_id, void *buf)
      to:
        H5Awrite(hid_t attr_id, hid_t type_id, const void *buf)
  

• Several changes to the C++ API were made, including support for Windows and the addition of the operator= to class PredType.

• Added HDF5 library performance tests, and made several performance improvements (to hyperslabs, data conversions, and chunking).

• Parallel C HDF5 now works on HP-UX platforms, Compaq clusters, Linux clusters, Cplants (alpha-linux clusters).

• The HDF5 F90 shared library is now supported on Windows platforms.

• The HDF5 C Library is now supported on IA32 and IA64 platforms.

  ftp://ftp.ncsa.uiuc.edu/HDF/HDF5/current/src/unpacked/release_docs/RELEASE.txt

• Fixed a bug when reading chunked datasets where the edge of the dataset would be incorrectly detected and generate an assertion failure.

• Fixed a bug where reading an entire dataset wasn't being handled optimally when the dataset had unlimited dimensions. Dataset is read in a single low-level I/O operation now, instead of being broken into separate pieces internally.

• Fixed a bug where reading or writing chunked data which needed a datatype conversion could result in data values getting corrupted.

• Fixed a bug where appending a point selection to the current selection would not actually append the point when there were no points defined currently.

• Fixed a bug where 'or'ing a hyperslab with a 'none' selection would fail. Now adds that hyperslab as the first hyperslab in the selection.

• Fixed a bug where 'or'ing a hyperslab with a 'none' selection would fail. Now adds that hyperslab as the first hyperslab in the selection.

• Fixed an off-by-one error in H5Sselect_valid which would allow hyperslab selections which overlapped the edge of the selection by one element as valid.

• Corrected behavior of H5Tinsert to not allow compound datatype fields to be inserted past the end of the datatype.

• Fixed bug where variable-length datatypes for attributes were not working correctly.

• Fixed bug where raw data re-allocated from the free-list would sometimes overlap with the metadata accumulator and get corrupted.

• Fixed bug where a preempted chunk in the chunk data could still be used by an internal pointer and cause an assertion failure or core dump.

• Fixed bug where non-zero fill-value was not being read correctly from certain chunked datasets when using an "all" or contiguous hyperslab selection.

    AIX 4.3.3.0 (IBM SP powerpc)  xlc 5.0.2.0
                                  mpcc_r 5.0.2.0
                                  xlf 07.01.0000.0002
                                  mpxlf 07.01.0000.0002
    AIX 4.3 (IBM SP RS6000)       C for AIX Compiler, Version 5.0.2.0
                                  xlf 7.1.0.2
                                  poe 3.1.0.12 (includes mpi)
    Cray T3E sn6711 2.0.5.57      Cray Standard C Version 6.5.0.3
                                  Cray Fortran Version 3.5.0.4
    Cray SV1 10.0.0.8             Cray Standard C Version 6.5.0.3 
                                  Cray Fortran Version 3.5.0.4
    FreeBSD 4.5                   gcc 2.95.3
                                  g++ 2.95.3
    HP-UX B.11.00                 HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
    HP-UX B.11.00 SysV            HP C  HP92453-01 A.11.01.20 
                                  HP F90 v2.4
                                  HP MPI [not a product] (03/24/2000) B6060BA
    IRIX 6.5                      MIPSpro cc 7.30
    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1.2m
    Linux 2.4.9-13smp             gcc 2.95.3
                                  g++ 2.95.3
    Linux 2.2.18smp               gcc 2.95.2
                                  gcc 2.95.2 with mpich 1.2.1
                                  g++ 2.95.2
                                  pgf90 3.2-4
    OSF1 V5.1                     Compaq C V6.3-028         
                                  Compaq Fortran V5.4-1283
    SunOS 5.7                     WorkShop Compilers 5.0 98/12/15 C 5.0
     (Solaris 2.7)                Workshop Compilers 5.0 98/12/15 C++ 5.0 
                                  Workshop Compilers 5.0 98/10/25 
                                  FORTRAN 90 2.0 Patch 107356-04 
    SunOS 5.8/32                  Sun WorkShop 6 update 1 C 5.2 2000/09/11
     (Solaris 2.8)                Sun WorkShop 6 update 1 Fortran 95 6.1 
                                          Patch 109503-07 2001/08/11
                                  Sun WorkShop 6 update 1 C++ 5.2 Patch
                                        109508-04 2001/07/11
    SunOS 5.8/64                  Sun WorkShop 6 update 1 C 5.2 2000/09/11
     (Solaris 2.8)                Sun WorkShop 6 update 1 Fortran 95 6.1 
                                          Patch 109503-07 2001/08/11
                                  Sun WorkShop 6 update 1 C++ 5.2 Patch
                                        109508-04 2001/07/11
    TFLOPS r1.0.4 v4.0.8 i386     pgcc Rel 3.1-4i with mpich-1.2.1 with
                                          local modifications
    IA-32 Linux 2.2.19smpx        cc Intel 5.0.1
                                  egcs-2.91.66
    IA-64 Linux 2.4.16 ia64       gcc version 2.96 20000731
                                  Intel(R) C++ Itanium(TM) Compiler 
                                  for the Itanium(TM)-based applications,
                                  Version 6.0 Beta, Build 20010905       
    Windows 2000 (NT5.0)          MSVC++ 6.0
                                  DEC Visual Fortran 6.0
    Windows NT4.0                 MSVC++ 6.0
                                  DEC Visual Fortran 6.0
    Windows NT4.0                 Code Warrior 6.0
    Windows 98                    MSVC++ 6.0
                                  DEC Visual Fortran 6.0

    http://hdf.ncsa.uiuc.edu/HDF5/release/known_problems5.html

HDF5 High Level API Software Release (beta 0.2)

    http://hdf.ncsa.uiuc.edu/HDF5/hdf5_hl/doc/

• The following new Table functions:

           H5TBdelete_record 
           H5TBinsert_record 
           H5TBadd_records_from 
           H5TBcombine_tables 
           H5TBinsert_field 
           H5TBdelete_field 
  

• Several function changes

• Additional test/example programs for the Table API.

• The windows installation procedure has been improved. There is now an "all" project that builds the hdf5_hl library and all the tests/examples. There is also a batch file that can be run from the command line to test all the hdf5_hl tests/examples. Note the change in location of the INSTALL.txt file, as follows:

           ftp://ftp.ncsa.uiuc.edu/HDF/HDF5/hdf5_hl/
  

Dropping Support for Windows 98