Purpose:
H5Pset_szip -- major rewrite
H5Dcreate -- added a note regarding SZIP
Description:
H5Pset_szip -- Rrestructured and rewrote H5Pset_szip Description and
Notes to explain SZIP usage more completely, to capture limitations
and potential pitfalls, to offer a tunign suggestion, and to
segregate discussion of SZIP parameters that may be of interest to
users familiar with SZIP in other environments.
Updated parameter discussion in Description and Parameter sections.
Described ways in which erroneous SZIP setup can cause H5Dcreate
to fail.
H5Dcreate -- Added note to see the H5Pset_szip RM entry if H5Dcreate
fails and SZIP compression is to be used with the dataset.
Platforms tested:
Mozilla
updated documentation and usage message
Description:
updated the html documentation for the new h5diff modes
added a section for h5repack
Solution:
Platforms tested:
linux
Misc. update:
Purpose:
Bug Fix
Description:
If an HDF5 file grows larger than its address space, it dies and is unable to
write any data. This is more likely to happen since users are able to change
the number of bytes used to store addresses in the file.
Solution:
HDF5 now throws an error instead of dying. In addition, it "reserves" address
space for the local heap and for object headers (which do not allocate space
immediately). This ensures that after the error occurs, there is enough address
space left to flush the entire file to disk, so no data is lost.
A more complete explanation is at /doc/html/TechNotes/ReservedFileSpace.html
Platforms tested:
sleipnir, copper (parallel), verbena, arabica, Windows (Visual Studio 7)
Misc. update:
Purpose: Maintenance
Description: H5_SZIP_CHIP_OPTION_MASK was deleted from the list
of the available parameters for the H5Pset_szip function.
Solution: Updated Fortran source, tests and documentation
to reflect this change.
Platforms tested: arabica (too small for h5committest)
Misc. update:
Purpose:
To more carefully describe the behavior of H5Pset_external.
Description:
Add notes that first H5Pset_external call sets the dataset as EXTERNAL
and identifies the first file in the series of external files that
will hold the dataset; subsequent calls identify additional files;
all external files must be declared before the dataset is created;
and the library will create files that don't yet exist on the system
at the time that H5Dwrite is called to write data to that file.
Also a few copy edits.
Platforms tested:
Mozilla
Purpose:
SZIP and general filter updates
Description:
Added SZIP to the introductory paragraphs and as appropriate in
the Fortran subroutine descriptions.
Revised the introductory discussion, which had focussed on
one compression filter, to allow for multiple filters of
different types.
Added list of distributed filters to intro.
Also some copy edits and minor formatting.
Platforms tested:
Mozilla, Safari
Description:
Added "API Changes" section for Release 1.6.3.
Includes templates and an incomplete scattering of initial entries.
Platforms tested:
Mozilla
Purpose:
Bugfix and clarification
Description:
H5Pget_driver -- removed H5FD_DPSS from valid drivers list;
DPSS is long gone.
H5Pset_shuffle -- clarified value and use of shuffle filter.
Platforms tested:
Mozilla
Code optimization & bug fix
Description:
When dimension information is being stored in the storage layout message
on disk, it is stored as 32-bit quantities, possibly truncating the dimension
information, if a dimension is greater than 32-bits in size.
Solution:
Fix the storage layout message problem by revising file format to not store
dimension information, since it is already available in the dataspace.
Also revise the storage layout data structures to be more compartmentalized
for the information for contiguous, chunked and compact storage.
Platforms tested:
FreeBSD 4.9 (sleipnir) w/parallel
Solaris 2.7 (arabica)
h5committest
Purpose:
Bugfixes in H5Gset_comment, h5gget_comment_f, and h5gset_comment_f.
(Follow-on to the H5Gget_comment bugfix of last week.)
Description:
Changed C parameter descriptions to indicate the following:
'loc_id' can be file, group, dataset, or named datatype.
'name' can be '.' if 'loc_id' fully describes the object.
'name' is ignored if 'loc_id' is a dataset or named datatype.
Modified h5gget_comment_f and h5gset_comment_f notes accordingly.
Copy edits in H5Gget/set_comment and h5gget/set_comment_f.
Platforms tested:
Safari
Purpose:
H5Gget_comment bugfix
Description:
H5Gget_comment: Changed "Description" text and "Parameters"
descriptions to indicate the following:
'loc_id' can be file, group, dataset, or named datatype.
'name' can be '.' if 'loc_id' fully describes the object.
'name' is ignored if 'loc_id' is a dataset or nemed datatype.
Also corrected the fact that the 'name' parameter description
referred to setting the comment rather than retriving it.
Platforms tested:
Safari
Purpose:
Bugfix: Bugzilla #66
Solution:
H5Pset_szip -- Corrected the plist parameter description.
Since this property can be set only in the dataset
creation property list, changed the parameter description
from
Dataset creation or dataset transfer property list identifier.
to
Dataset creation property list identifier.
Fixes Bugzilla bug #66.
Platforms tested:
IE 5
Description:
Changed the H5Pset(get)_cache change description in the
Release 1.6.0 "Functions with Changed Syntax" section to
reference the 'rdcc_nbytes' parameter rather than 'rdcc_nelmts'.
The note originally identifed the wrong parameter as having a
changed datatype.
[Closes bug #1053.]
Platforms tested:
IE 5
Purpose:
Update documentation index (hdf5/doc/html/index.html) to say
that it describes Release 1.6.2.
The index file included with the R1.6.2 source tarfile mistakenly
refers to Release 1.6.1; this has been noted on the "Known Problems"
page on the HDF5 website. The corrected file will be included in the
hdf.ncsa.uiuc.edu:/HDF5/doc/ document set and in the
Release 1.6.2 documentation-only tarfile.
Platforms tested:
IE 5, Safari
Description: Changed version to be 1.6.2 and ran bin/release.
Since several files are changed, I am checking them in before
tagging the release
Solution:
Platforms tested: eirene
Misc. update:
Bug fix/optimization
Description:
Address slowdown in MPI-I/O file metadata operations that was introduced
mid-stream. We now _require_ a POSIX compliant parallel file system for the
MPI-I/O file driver (as well as for the MPI-POSIX file driver).
Also optimized file open operation when the file is being created by
reducing the number of collective & syncronizing calls.
Platforms tested:
FreeBSD 4.9 (sleipnir) w/parallel
h5committest
