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All HDF5 User's Guide files Integrated Palettes.html. Integrated MountingFiles.html. Cleaned up page footers. Made <title>---</title> entries somewhat more consistent. Files.html Errors.html Datasets.html Fixed minor formatting errors. Palettes.html MountingFiles.html These new sections were added to the HDF5 User's Guide. Environment.html Deleted duplicate text.
152 lines
5.1 KiB
HTML
152 lines
5.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
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<html>
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<head>
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<title>Environment Variables and Configuration Parameters</title>
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</head>
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<body bgcolor="#FFFFFF">
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<hr>
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<center>
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<table border=0 width=98%>
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<tr><td valign=top align=left>
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<a href="H5.intro.html">Introduction to HDF5</a> <br>
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<a href="RM_H5Front.html">HDF5 Reference Manual</a> <br>
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<a href="index.html">Other HDF5 documents and links</a> <br>
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<!--
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<a href="Glossary.html">Glossary</a><br>
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</td>
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<td valign=top align=right>
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And in this document, the
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<a href="H5.user.html"><strong>HDF5 User's Guide:</strong></a>
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<br>
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<a href="Files.html">Files</a>
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<a href="Datasets.html">Datasets</a>
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<a href="Datatypes.html">Data Types</a>
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<a href="Dataspaces.html">Dataspaces</a>
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<a href="Groups.html">Groups</a>
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<br>
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<a href="References.html">References</a>
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<a href="Attributes.html">Attributes</a>
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<a href="Properties.html">Property Lists</a>
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<a href="Errors.html">Error Handling</a>
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<br>
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<a href="Filters.html">Filters</a>
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<a href="Palettes.html">Palettes</a>
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<a href="Caching.html">Caching</a>
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<a href="Chunking.html">Chunking</a>
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<a href="MountingFiles.html">Mounting Files</a>
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<br>
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<a href="Debugging.html">Debugging</a>
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Environment
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<a href="ddl.html">DDL</a>
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<a href="Ragged.html">Ragged Arrays</a>
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</td></tr>
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</table>
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</center>
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<hr>
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<h1>HDF5 Library Environment Variables and Configuration Parameters</h1>
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<h2>1. Environment Variables</h2>
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The HDF5 library uses UNIX environment variables to control
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or adjust certain library features at runtime. The variables and
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their defined effects are as follows:
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<dir>
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<dl>
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<dt><tt>HDF5_DEBUG</tt>
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<dd>Defines a list of debugging switches documented in the
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<a href="Debugging.html">Debugging</a> section of the
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<cite>HDF5 User's Guide</cite>.
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<dt><tt>HDF5_NOCLEANUP</tt>
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<dd>When set to a non-empty value, the programs in the test
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directory do not remove temporary HDF5 data files.
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The default is for each test to remove the files before exit.
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<dt><tt>HDF5_MPI_OPT_TYPES</tt>
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(for parallel beta version only)
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<dd>When set to <code>1</code>, PHDF5 will use the MPI optimized
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code to perform parallel read/write accesses to datasets.
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Currently, this optimization fails when accessing extendable
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datasets. The default is not to use the optimized code.
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<dt><tt>HDF5_MPI_1_METAWRITE</tt>
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(for parallel beta version only)
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<dd>When set to <code>1</code>, PHDF5 will write the metadata
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via process 0 of each opened parallel HDF5 file. This should
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improve I/O throughput. The default is not to use this
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optimization.
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</dl>
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</dir>
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<h2>2. Configuration Parameters</h2>
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The HDF5 configuration script accepts a list of parameters to control
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configuration features when creating the Makefiles for the library.
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The command
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<br>
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<code> configure --help </code>
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<br>
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will display the current list of parameters and their effects.
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<hr>
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<center>
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<table border=0 width=98%>
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<tr><td valign=top align=left>
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<a href="H5.intro.html">Introduction to HDF5</a> <br>
|
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<a href="RM_H5Front.html">HDF5 Reference Manual</a> <br>
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<a href="index.html">Other HDF5 documents and links</a> <br>
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<!--
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<a href="Glossary.html">Glossary</a><br>
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-->
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</td>
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<td valign=top align=right>
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And in this document, the
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<a href="H5.user.html"><strong>HDF5 User's Guide:</strong></a>
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<br>
|
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<a href="Files.html">Files</a>
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<a href="Datasets.html">Datasets</a>
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<a href="Datatypes.html">Data Types</a>
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<a href="Dataspaces.html">Dataspaces</a>
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<a href="Groups.html">Groups</a>
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<br>
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<a href="References.html">References</a>
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<a href="Attributes.html">Attributes</a>
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<a href="Properties.html">Property Lists</a>
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<a href="Errors.html">Error Handling</a>
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<br>
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<a href="Filters.html">Filters</a>
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<a href="Palettes.html">Palettes</a>
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<a href="Caching.html">Caching</a>
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<a href="Chunking.html">Chunking</a>
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<a href="MountingFiles.html">Mounting Files</a>
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<br>
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<a href="Debugging.html">Debugging</a>
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Environment
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<a href="ddl.html">DDL</a>
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<a href="Ragged.html">Ragged Arrays</a>
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</td></tr>
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</table>
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</center>
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<hr>
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<address>
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<a href="mailto:hdfhelp@ncsa.uiuc.edu">HDF Help Desk</a>
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</address>
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Last modified: 25 November 1998
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</body>
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</html>
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