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<head><title>
HDF5 Technical Notes
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<h1>HDF5 Technical Notes</h1>
<h3>Technical Notes for HDF5 Library and Driver Developers</h3>
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<table border=0 width=85%>
<tr><td valign=top colspan=3>
This informal volume of technical notes is of interest to
those who develop and maintain the HDF5 library and
related, closely-coupled drivers.
These notes are not generally of interest to applications developers
and certainly not of interest to users.
(Some of these documents may be somewhat out of date as they were
working papers for the design process.)
<br>
<br>
</td></tr>
<tr><td valign=top width=40%><a href="TechNotes/MemoryMgmt.html">
Memory Management</a>
</td><td> </td><td valign=top>
A discussion of memory management issues in HDF5
</td></tr>
<tr><td valign=top><a href="TechNotes/FreeLists.html">
Memory Management and</a>
<br>
<a href="TechNotes/FreeLists.html">Free Lists</a>
</td><td> </td><td valign=top>
Notes regarding the implementation of free lists and memory management
</td></tr>
<tr><td valign=top><a href="TechNotes/HeapMgmt.html">Heap Management</a>
</td><td> </td><td valign=top>
A discussion of the H5H heap management fuctions
</td></tr>
<tr><td valign=top><a href="TechNotes/RawDStorage.html">Raw Data Storage</a>
</td><td> </td><td valign=top>
A discussion of the storage of raw HDF5 data
</td></tr>
<tr><td valign=top><a href="TechNotes/VFL.html">Virtual File Layer</a>
</td><td> </td><td valign=top>
A description of the HDF5 virtual file layer (VFL),
a public API for the implementation of custom I/O drivers
</td></tr>
<tr><td valign=top><a href="TechNotes/VFLfunc.html">List of VFL Functions</a>
</td><td> </td><td valign=top>
A list of the VFL functions, <code>H5FD*</code>
</td></tr>
<tr><td valign=top><a href="TechNotes/IOPipe.html">I/O Pipeline</a>
</td><td> </td><td valign=top>
A description of the raw data I/O pipeline
</td></tr>
<tr><td valign=top><a href="TechNotes/BigDataSmMach.html">
Large Datasets on Small</a>
<br>
<a href="TechNotes/BigDataSmMach.html">Machines</a>
</td><td> </td><td valign=top>
A guide to accessing large datasets on small computers
</td></tr>
<tr><td valign=top><a href="TechNotes/MoveDStruct.html">
Relocating a File Data</a>
<br>
<a href="TechNotes/MoveDStruct.html">Structure</a>
</td><td> </td><td valign=top>
A discussion of the issues involved in moving file data structures once
they have been cached in memory
</td></tr>
<tr><td valign=top><a href="TechNotes/ExternalFiles.html">
Working with External Files</a>
</td><td> </td><td valign=top>
A guide to the use of multiple files with HDF5
</td></tr>
<tr><td valign=top><a href="TechNotes/ObjectHeader.html">Object Headers</a>
</td><td> </td><td valign=top>
A discussion of the H5O object header functions
</td></tr>
<tr><td valign=top><a href="TechNotes/SymbolTables.html">
Symbol Table Caching Issues</a>
</td><td> </td><td valign=top>
A discussion of issues involving caching of object header messages in
symbol table entries
</td></tr>
<tr><td valign=top><a href="TechNotes/H4-H5Compat.html">
HDF4/HDF5 Compatibility</a>
</td><td> </td><td valign=top>
A discussion of compatibility issues between HDF4 and HDF5
</td></tr>
<tr><td valign=top><a href="TechNotes/ChunkingStudy.html">
Testing the Chunked Layout</a>
<br>
<a href="TechNotes/ChunkingStudy.html">of HDF5</a>
</td><td> </td><td valign=top>
A white paper discussing the motivation to implement raw data chunking
in the HDF5 library
</td></tr>
<tr><td valign=top><a href="TechNotes/LibMaint.html">Library Maintenance</a>
</td><td> </td><td valign=top>
A discussion of HDF5 library maintenance issues
</td></tr>
<tr><td valign=top><a href="TechNotes/CodeReview.html">Code Review</a>
</td><td> </td><td valign=top>
Code Review 1 and 2
</td></tr>
<tr><td valign=top><a href="TechNotes/Version.html">
Release Version Numbers</a>
</td><td> </td><td valign=top>
A description of HDF5 release version numbers
</td></tr>
<tr><td valign=top><a href="TechNotes/NamingScheme.html">Naming Schemes</a>
</td><td> </td><td valign=top>
A discussion of naming schemes for HDF5 library modules, functions,
datatypes, etc.
</td></tr>
<tr><td valign=top>
<a href="TechNotes/ThreadSafeLibrary.html">Thread Safe HDF5 Library</a>
<br>
<a href="TechNotes/ThreadSafeLibrary.html">Implementation</a>
</td><td> </td><td valign=top>
A report on the implementation of a thread safe HDF5 library.
</td></tr>
<tr><td valign=top>
<a href="TechNotes/openmp-hdf5.html">Using HDF5 with OpenMP</a>
</td><td> </td><td valign=top>
A short report on using HDF5 with OpenMP.
</td></tr>
<tr><td valign=top><a href="TechNotes/SWControls.html">HDF5 Software Controls</a>
</td><td> </td><td valign=top>
Descriptions of the HDF5 knobs and controls, such as the
environment variables and settings that control the functionality
of the HDF5 libraries and tools.
</td></tr>
<tr><td valign=top><a href="TechNotes/Daily_Test_Explained.htm">Daily Test Explained</a>
</td><td> </td><td valign=top>
An explanation of the Daily Testing for HDF software conducted.
</td></tr>
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<a href="H5.user.html">HDF5 User's Guide</a> <br>
<a href="ADGuide.html">HDF5 Application Developer's Guide</a> <br>
<a href="RM_H5Front.html">HDF5 Reference Manual</a> <br>
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And in this document,
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<a href="mailto:hdfhelp@ncsa.uiuc.edu">HDF Help Desk</a>
<br>
Last modified: 28 October 2002
</td><td align=right valign=top>
<a href="Copyright.html">Copyright</a>
<br>
Describes HDF5 Release 1.5, Unreleased Development Branch
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