/[MITgcm]/manual/s_software/text/sarch.tex
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revision 1.6 by adcroft, Tue Nov 13 20:13:55 2001 UTC revision 1.8 by heimbach, Wed Apr 24 09:00:53 2002 UTC
# Line 1  Line 1 
1  % $Header$  % $Header$
2    
3  In this chapter we describe the software architecture and  This chapter focuses on describing the {\bf WRAPPER} environment within which
4  implementation strategy for the MITgcm code. The first part of this  both the core numerics and the pluggable packages operate. The description
5  chapter discusses the MITgcm architecture at an abstract level. In the second  presented here is intended to be a detailed exposition and contains significant
6  part of the chapter we described practical details of the MITgcm implementation  background material, as well as advanced details on working with the WRAPPER.
7  and of current tools and operating system features that are employed.  The tutorial sections of this manual (see Chapters
8    \ref{chap:tutorialI}, \ref{chap:tutorialII} and \ref{chap:tutorialIII})
9    contain more succinct, step-by-step instructions on running basic numerical
10    experiments, of varous types, both sequentially and in parallel. For many
11    projects simply starting from an example code and adapting it to suit a
12    particular situation
13    will be all that is required.
14    The first part of this chapter discusses the MITgcm architecture at an
15    abstract level. In the second part of the chapter we described practical
16    details of the MITgcm implementation and of current tools and operating system
17    features that are employed.
18    
19  \section{Overall architectural goals}  \section{Overall architectural goals}
20    
# Line 807  by the application code. The startup cal Line 817  by the application code. The startup cal
817  WRAPPER is shown in figure \ref{fig:wrapper_startup}.  WRAPPER is shown in figure \ref{fig:wrapper_startup}.
818    
819  \begin{figure}  \begin{figure}
820    {\footnotesize
821  \begin{verbatim}  \begin{verbatim}
822    
823         MAIN           MAIN  
# Line 835  WRAPPER is shown in figure \ref{fig:wrap Line 846  WRAPPER is shown in figure \ref{fig:wrap
846    
847    
848  \end{verbatim}  \end{verbatim}
849    }
850  \caption{Main stages of the WRAPPER startup procedure.  \caption{Main stages of the WRAPPER startup procedure.
851  This process proceeds transfer of control to application code, which  This process proceeds transfer of control to application code, which
852  occurs through the procedure {\em THE\_MODEL\_MAIN()}.  occurs through the procedure {\em THE\_MODEL\_MAIN()}.
# Line 1414  sequence shown in section \ref{sect:call Line 1426  sequence shown in section \ref{sect:call
1426    
1427  WRAPPER layer.  WRAPPER layer.
1428    
1429    {\footnotesize
1430  \begin{verbatim}  \begin{verbatim}
1431    
1432         MAIN           MAIN  
# Line 1441  WRAPPER layer. Line 1454  WRAPPER layer.
1454         |--THE_MODEL_MAIN   :: Numerical code top-level driver routine         |--THE_MODEL_MAIN   :: Numerical code top-level driver routine
1455    
1456  \end{verbatim}  \end{verbatim}
1457    }
1458    
1459  Core equations plus packages.  Core equations plus packages.
1460    
1461    {\footnotesize
1462  \begin{verbatim}  \begin{verbatim}
1463  C  C
1464  C  C
# Line 1782  C    |-COMM_STATS     :: Summarise inter Line 1797  C    |-COMM_STATS     :: Summarise inter
1797  C                     :: events.  C                     :: events.
1798  C  C
1799  \end{verbatim}  \end{verbatim}
1800    }
1801    
1802  \subsection{Measuring and Characterizing Performance}  \subsection{Measuring and Characterizing Performance}
1803    
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