Changeset 349 for palm/trunk/DOC/app/chapter_3.8.html
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- Jul 8, 2009 11:18:02 AM (15 years ago)
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palm/trunk/DOC/app/chapter_3.8.html
r344 r349 21 21 <H3 STYLE="line-height: 100%">3.8 Coupled model runs</H3> 22 22 <P STYLE="line-height: 100%">Starting from version 3.4 PALM allows 23 coupled atmosphere-ocean model runs. By analogy with the modular 24 structure of PALM, <B>mrun</B> starts the coupled model as two 23 coupled atmosphere-ocean model runs. If MPI-2 support is available, <B>mrun</B> starts the coupled model as two 25 24 concurrent executables, the atmosphere version and the ocean 26 version of PALM.</P>25 version in analogy with the modular structure of PALM.</P> 27 26 <P STYLE="line-height: 100%">Currently, the coupler is at an 28 27 experimental stage using either a MPI2 (more flexible) or a MPI1 … … 45 44 configuration file. Otherwise, PALM will use a coupling via MPI1. To 46 45 start a coupled model run, this must be requested with the <B>mrun</B> 47 option <TT><FONT SIZE=2>-Y â#1 #2â</FONT></TT> <TT><FONT FACE="Times New Roman, serif"><FONT SIZE=3>,48 where </ FONT></FONT></TT><TT><FONT FACE="Andale Mono"><FONT SIZE=2>#1</FONT></FONT></TT><TT><FONT FACE="Times New Roman, serif"><FONT SIZE=3>49 is the number of processors for the atmospheric and </FONT></FONT></TT>< TT><FONT FACE="Andale Mono"><FONT SIZE=2>#2</FONT></FONT></TT><TT><FONT FACE="Times New Roman, serif"><FONT SIZE=3>46 option <TT><FONT SIZE=2>-Y â#1 #2â</FONT></TT>, 47 where </TT><TT><FONT FACE="Andale Mono"><FONT SIZE=2>#1</FONT></FONT></TT> 48 is the number of processors for the atmospheric and </FONT></FONT></TT><FONT FACE="Andale Mono"><FONT SIZE=2>#2</FONT></FONT></TT> 50 49 the number of processors for the oceanic version of PALM (Please note 51 that currently only one-to-one topologies are supported and </FONT></FONT></TT><TT><FONT FACE="Andale Mono"><FONT SIZE=2>#1</FONT></FONT></TT> <TT><FONT FACE="Times New Roman, serif"><FONT SIZE=3>52 must be equal to </FONT></FONT></TT><TT><FONT FACE="Andale Mono"><FONT SIZE=2>#2</FONT></FONT></TT>< TT><FONT FACE="Times New Roman, serif"><FONT SIZE=3>).53 </FONT></FONT></TT><FONT FACE="Times New Roman, serif"><FONT SIZE=3> Thi</FONT></FONT>s50 that currently only one-to-one topologies are supported and </FONT></FONT></TT><TT><FONT FACE="Andale Mono"><FONT SIZE=2>#1</FONT></FONT></TT> 51 must be equal to </FONT></FONT></TT><TT><FONT FACE="Andale Mono"><FONT SIZE=2>#2</FONT></FONT></TT><FONT FACE="Times New Roman, serif"><FONT SIZE=3>). 52 </FONT></FONT></TT><FONT FACE="Times New Roman, serif"><FONT SIZE=3></FONT></FONT>This 54 53 tells <B>mrun</B> to start two PALM executables. Coupled runs are 55 54 only possible in parallel mode, which means that the <B>mrun</B>
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