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	<id>https://source.geography.bristol.ac.uk/mediawiki/index.php?action=history&amp;feed=atom&amp;title=GCOM</id>
	<title>GCOM - Revision history</title>
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	<updated>2026-04-17T20:36:52Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://source.geography.bristol.ac.uk/mediawiki/index.php?title=GCOM&amp;diff=8334&amp;oldid=prev</id>
		<title>GethinWilliams: Created page with ''''The UM's Communication Library'''  =v2.9b5=  This version of GCOM would not run with OpenMPI (http://www.open-mpi.org), as MPI_COMM_WORLD has a different numerical value betwe…'</title>
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		<updated>2011-06-13T15:11:19Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;#039;&amp;#039;&amp;#039;&amp;#039;The UM&amp;#039;s Communication Library&amp;#039;&amp;#039;&amp;#039;  =v2.9b5=  This version of GCOM would not run with OpenMPI (http://www.open-mpi.org), as MPI_COMM_WORLD has a different numerical value betwe…&amp;#039;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;'''The UM's Communication Library'''&lt;br /&gt;
&lt;br /&gt;
=v2.9b5=&lt;br /&gt;
&lt;br /&gt;
This version of GCOM would not run with OpenMPI (http://www.open-mpi.org), as MPI_COMM_WORLD has a different numerical value between the Fortran and C libraries (The UM uses mixed language programming in GCOM) and also certain arguments need to be cast, again so they are interoperable between C and Fortran.  To get hold of a version which will work with OpenMPI type:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
svn co https://svn.ggy.bris.ac.uk/subversion-open/gcom/trunk/gcom2.9b5&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;/div&gt;</summary>
		<author><name>GethinWilliams</name></author>
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