| 3 |
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| 4 |
%\section{Getting started} |
%\section{Getting started} |
| 5 |
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| 6 |
In this section, we describe how to use the model. In the first |
We believe the best way to familiarize yourself with the |
|
section, we provide enough information to help you get started with |
|
|
the model. We believe the best way to familiarize yourself with the |
|
| 7 |
model is to run the case study examples provided with the base |
model is to run the case study examples provided with the base |
| 8 |
version. Information on how to obtain, compile, and run the code is |
version. Information on how to obtain, compile, and run the code is |
| 9 |
found there as well as a brief description of the model structure |
found here as well as a brief description of the model structure |
| 10 |
directory and the case study examples. The latter and the code |
directory and the case study examples. Information is also provided |
| 11 |
structure are described more fully in chapters |
here on how to customize the code when you are ready to try implementing |
| 12 |
\ref{chap:discretization} and \ref{chap:sarch}, respectively. Here, in |
the configuration you have in mind. The code and algorithm |
| 13 |
this section, we provide information on how to customize the code when |
are described more fully in chapters \ref{chap:discretization} and |
| 14 |
you are ready to try implementing the configuration you have in mind. |
\ref{chap:sarch}. |
| 15 |
|
|
| 16 |
\section{Where to find information} |
\section{Where to find information} |
| 17 |
\label{sect:whereToFindInfo} |
\label{sec:whereToFindInfo} |
| 18 |
\begin{rawhtml} |
\begin{rawhtml} |
| 19 |
<!-- CMIREDIR:whereToFindInfo: --> |
<!-- CMIREDIR:whereToFindInfo: --> |
| 20 |
\end{rawhtml} |
\end{rawhtml} |
| 21 |
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|
| 22 |
A web site is maintained for release 2 (``Pelican'') of MITgcm: |
There is a web-archived support mailing list for the model that |
|
\begin{rawhtml} <A href=http://mitgcm.org/pelican/ target="idontexist"> \end{rawhtml} |
|
|
\begin{verbatim} |
|
|
http://mitgcm.org/pelican |
|
|
\end{verbatim} |
|
|
\begin{rawhtml} </A> \end{rawhtml} |
|
|
Here you will find an on-line version of this document, a |
|
|
``browsable'' copy of the code and a searchable database of the model |
|
|
and site, as well as links for downloading the model and |
|
|
documentation, to data-sources, and other related sites. |
|
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|
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There is also a web-archived support mailing list for the model that |
|
| 23 |
you can email at \texttt{MITgcm-support@mitgcm.org} or browse at: |
you can email at \texttt{MITgcm-support@mitgcm.org} or browse at: |
| 24 |
\begin{rawhtml} <A href=http://mitgcm.org/mailman/listinfo/mitgcm-support/ target="idontexist"> \end{rawhtml} |
\begin{rawhtml} <A href=http://mitgcm.org/mailman/listinfo/mitgcm-support/ target="idontexist"> \end{rawhtml} |
| 25 |
\begin{verbatim} |
\begin{verbatim} |
| 27 |
http://mitgcm.org/pipermail/mitgcm-support/ |
http://mitgcm.org/pipermail/mitgcm-support/ |
| 28 |
\end{verbatim} |
\end{verbatim} |
| 29 |
\begin{rawhtml} </A> \end{rawhtml} |
\begin{rawhtml} </A> \end{rawhtml} |
|
Essentially all of the MITgcm web pages can be searched using a |
|
|
popular web crawler such as Google or through our own search facility: |
|
|
\begin{rawhtml} <A href=http://mitgcm.org/mailman/htdig/ target="idontexist"> \end{rawhtml} |
|
|
\begin{verbatim} |
|
|
http://mitgcm.org/htdig/ |
|
|
\end{verbatim} |
|
|
\begin{rawhtml} </A> \end{rawhtml} |
|
|
%%% http://www.google.com/search?q=hydrostatic+site%3Amitgcm.org |
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| 30 |
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| 31 |
\section{Obtaining the code} |
\section{Obtaining the code} |
| 32 |
\label{sect:obtainingCode} |
\label{sec:obtainingCode} |
| 33 |
\begin{rawhtml} |
\begin{rawhtml} |
| 34 |
<!-- CMIREDIR:obtainingCode: --> |
<!-- CMIREDIR:obtainingCode: --> |
| 35 |
\end{rawhtml} |
\end{rawhtml} |
| 63 |
\end{enumerate} |
\end{enumerate} |
| 64 |
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|
| 65 |
\subsection{Method 1 - Checkout from CVS} |
\subsection{Method 1 - Checkout from CVS} |
| 66 |
\label{sect:cvs_checkout} |
\label{sec:cvs_checkout} |
| 67 |
|
|
| 68 |
If CVS is available on your system, we strongly encourage you to use it. CVS |
If CVS is available on your system, we strongly encourage you to use it. CVS |
| 69 |
provides an efficient and elegant way of organizing your code and keeping |
provides an efficient and elegant way of organizing your code and keeping |
| 92 |
|
|
| 93 |
To obtain the latest sources type: |
To obtain the latest sources type: |
| 94 |
\begin{verbatim} |
\begin{verbatim} |
| 95 |
% cvs co MITgcm |
% cvs co -P MITgcm |
| 96 |
\end{verbatim} |
\end{verbatim} |
| 97 |
or to get a specific release type: |
or to get a specific release type: |
| 98 |
\begin{verbatim} |
\begin{verbatim} |
| 99 |
% cvs co -P -r checkpoint52i_post MITgcm |
% cvs co -P -r checkpoint52i_post MITgcm |
| 100 |
\end{verbatim} |
\end{verbatim} |
| 101 |
|
The CVS command ``\texttt{cvs co}'' is the abreviation of the full-name |
| 102 |
|
``\texttt{cvs checkout}'' command and using the option ``-P'' (\texttt{cvs co -P}) |
| 103 |
|
will prevent to download unnecessary empty directories. |
| 104 |
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|
| 105 |
The MITgcm web site contains further directions concerning the source |
The MITgcm web site contains further directions concerning the source |
| 106 |
code and CVS. It also contains a web interface to our CVS archive so |
code and CVS. It also contains a web interface to our CVS archive so |
| 107 |
that one may easily view the state of files, revisions, and other |
that one may easily view the state of files, revisions, and other |
| 108 |
development milestones: |
development milestones: |
| 109 |
\begin{rawhtml} <A href="http://mitgcm.org/download" target="idontexist"> \end{rawhtml} |
\begin{rawhtml} <A href="http://mitgcm.org/viewvc/MITgcm/MITgcm/" target="idontexist"> \end{rawhtml} |
| 110 |
\begin{verbatim} |
\begin{verbatim} |
| 111 |
http://mitgcm.org/source_code.html |
http://mitgcm.org/viewvc/MITgcm/MITgcm/ |
| 112 |
\end{verbatim} |
\end{verbatim} |
| 113 |
\begin{rawhtml} </A> \end{rawhtml} |
\begin{rawhtml} </A> \end{rawhtml} |
| 114 |
|
|
| 143 |
the files in \texttt{CVS}! You can also use CVS to download code |
the files in \texttt{CVS}! You can also use CVS to download code |
| 144 |
updates. More extensive information on using CVS for maintaining |
updates. More extensive information on using CVS for maintaining |
| 145 |
MITgcm code can be found |
MITgcm code can be found |
| 146 |
\begin{rawhtml} <A href="http://mitgcm.org/usingcvstoget.html" target="idontexist"> \end{rawhtml} |
\begin{rawhtml} <A href="http://mitgcm.org/public/using_cvs.html" target="idontexist"> \end{rawhtml} |
| 147 |
here |
here |
| 148 |
\begin{rawhtml} </A> \end{rawhtml} |
\begin{rawhtml} </A> \end{rawhtml}. |
|
. |
|
| 149 |
It is important to note that the CVS aliases in Table |
It is important to note that the CVS aliases in Table |
| 150 |
\ref{tab:cvsModules} cannot be used in conjunction with the CVS |
\ref{tab:cvsModules} cannot be used in conjunction with the CVS |
| 151 |
\texttt{-d DIRNAME} option. However, the \texttt{MITgcm} directories |
\texttt{-d DIRNAME} option. However, the \texttt{MITgcm} directories |
| 152 |
they create can be changed to a different name following the check-out: |
they create can be changed to a different name following the check-out: |
| 153 |
\begin{verbatim} |
\begin{verbatim} |
| 154 |
% cvs co MITgcm_verif_basic |
% cvs co -P MITgcm_verif_basic |
| 155 |
% mv MITgcm MITgcm_verif_basic |
% mv MITgcm MITgcm_verif_basic |
| 156 |
\end{verbatim} |
\end{verbatim} |
| 157 |
|
|
| 158 |
|
Note that it is possible to checkout code without ``cvs login'' and without |
| 159 |
\subsection{Method 2 - Tar file download} |
setting any shell environment variables by specifying the pserver name and |
| 160 |
\label{sect:conventionalDownload} |
password in one line, for example: |
|
|
|
|
If you do not have CVS on your system, you can download the model as a |
|
|
tar file from the web site at: |
|
|
\begin{rawhtml} <A href=http://mitgcm.org/download target="idontexist"> \end{rawhtml} |
|
| 161 |
\begin{verbatim} |
\begin{verbatim} |
| 162 |
http://mitgcm.org/download/ |
% cvs -d :pserver:cvsanon:cvsanon@mitgcm.org:/u/gcmpack co -P MITgcm |
| 163 |
\end{verbatim} |
\end{verbatim} |
|
\begin{rawhtml} </A> \end{rawhtml} |
|
|
The tar file still contains CVS information which we urge you not to |
|
|
delete; even if you do not use CVS yourself the information can help |
|
|
us if you should need to send us your copy of the code. If a recent |
|
|
tar file does not exist, then please contact the developers through |
|
|
the |
|
|
\begin{rawhtml} <A href="mailto:MITgcm-support@mitgcm.org"> \end{rawhtml} |
|
|
MITgcm-support@mitgcm.org |
|
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\begin{rawhtml} </A> \end{rawhtml} |
|
|
mailing list. |
|
| 164 |
|
|
| 165 |
\subsubsection{Upgrading from an earlier version} |
\subsubsection{Upgrading from an earlier version} |
| 166 |
|
|
| 172 |
\end{verbatim} |
\end{verbatim} |
| 173 |
and then issue the cvs update command such as: |
and then issue the cvs update command such as: |
| 174 |
\begin{verbatim} |
\begin{verbatim} |
| 175 |
% cvs -q update -r checkpoint52i_post -d -P |
% cvs -q update -d -P -r checkpoint52i_post |
| 176 |
\end{verbatim} |
\end{verbatim} |
| 177 |
This will update the ``tag'' to ``checkpoint52i\_post'', add any new |
This will update the ``tag'' to ``checkpoint52i\_post'', add any new |
| 178 |
directories (-d) and remove any empty directories (-P). The -q option |
directories (-d) and remove any empty directories (-P). The -q option |
| 218 |
latest code'' and we haven't made a ``tag'' or ``release'' since that |
latest code'' and we haven't made a ``tag'' or ``release'' since that |
| 219 |
patch then you'll need to get the latest code: |
patch then you'll need to get the latest code: |
| 220 |
\begin{verbatim} |
\begin{verbatim} |
| 221 |
% cvs -q update -A -d -P |
% cvs -q update -d -P -A |
| 222 |
\end{verbatim} |
\end{verbatim} |
| 223 |
Unlike, the ``check-out'' and ``update'' procedures above, there is no |
Unlike, the ``check-out'' and ``update'' procedures above, there is no |
| 224 |
``tag'' or release name. The -A tells CVS to upgrade to the |
``tag'' or release name. The -A tells CVS to upgrade to the |
| 228 |
also means we can't tell what version of the code you are working |
also means we can't tell what version of the code you are working |
| 229 |
with. So please be sure you understand what you're doing. |
with. So please be sure you understand what you're doing. |
| 230 |
|
|
| 231 |
|
\subsection{Method 2 - Tar file download} |
| 232 |
|
\label{sec:conventionalDownload} |
| 233 |
|
|
| 234 |
|
If you do not have CVS on your system, you can download the model as a |
| 235 |
|
tar file from the web site at: |
| 236 |
|
\begin{rawhtml} <A href=http://mitgcm.org/download/ target="idontexist"> \end{rawhtml} |
| 237 |
|
\begin{verbatim} |
| 238 |
|
http://mitgcm.org/download/ |
| 239 |
|
\end{verbatim} |
| 240 |
|
\begin{rawhtml} </A> \end{rawhtml} |
| 241 |
|
The tar file still contains CVS information which we urge you not to |
| 242 |
|
delete; even if you do not use CVS yourself the information can help |
| 243 |
|
us if you should need to send us your copy of the code. If a recent |
| 244 |
|
tar file does not exist, then please contact the developers through |
| 245 |
|
the |
| 246 |
|
\begin{rawhtml} <A href="mailto:MITgcm-support@mitgcm.org"> \end{rawhtml} |
| 247 |
|
MITgcm-support@mitgcm.org |
| 248 |
|
\begin{rawhtml} </A> \end{rawhtml} |
| 249 |
|
mailing list. |
| 250 |
|
|
| 251 |
\section{Model and directory structure} |
\section{Model and directory structure} |
| 252 |
\begin{rawhtml} |
\begin{rawhtml} |
| 253 |
<!-- CMIREDIR:directory_structure: --> |
<!-- CMIREDIR:directory_structure: --> |
| 272 |
|
|
| 273 |
\begin{itemize} |
\begin{itemize} |
| 274 |
|
|
|
\item \texttt{bin}: this directory is initially empty. It is the |
|
|
default directory in which to compile the code. |
|
|
|
|
|
\item \texttt{diags}: contains the code relative to time-averaged |
|
|
diagnostics. It is subdivided into two subdirectories \texttt{inc} |
|
|
and \texttt{src} that contain include files (\texttt{*.h} files) and |
|
|
Fortran subroutines (\texttt{*.F} files), respectively. |
|
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|
| 275 |
\item \texttt{doc}: contains brief documentation notes. |
\item \texttt{doc}: contains brief documentation notes. |
| 276 |
|
|
| 277 |
\item \texttt{eesupp}: contains the execution environment source code. |
\item \texttt{eesupp}: contains the execution environment source code. |
| 278 |
Also subdivided into two subdirectories \texttt{inc} and |
Also subdivided into two subdirectories \texttt{inc} and |
| 279 |
\texttt{src}. |
\texttt{src}. |
| 280 |
|
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|
\item \texttt{exe}: this directory is initially empty. It is the |
|
|
default directory in which to execute the code. |
|
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|
|
| 281 |
\item \texttt{model}: this directory contains the main source code. |
\item \texttt{model}: this directory contains the main source code. |
| 282 |
Also subdivided into two subdirectories \texttt{inc} and |
Also subdivided into two subdirectories \texttt{inc} and |
| 283 |
\texttt{src}. |
\texttt{src}. |
| 286 |
package corresponds to a subdirectory. For example, \texttt{gmredi} |
package corresponds to a subdirectory. For example, \texttt{gmredi} |
| 287 |
contains the code related to the Gent-McWilliams/Redi scheme, |
contains the code related to the Gent-McWilliams/Redi scheme, |
| 288 |
\texttt{aim} the code relative to the atmospheric intermediate |
\texttt{aim} the code relative to the atmospheric intermediate |
| 289 |
physics. The packages are described in detail in section 3. |
physics. The packages are described in detail in chapter \ref{chap:packagesI}. |
| 290 |
|
|
| 291 |
\item \texttt{tools}: this directory contains various useful tools. |
\item \texttt{tools}: this directory contains various useful tools. |
| 292 |
For example, \texttt{genmake2} is a script written in csh (C-shell) |
For example, \texttt{genmake2} is a script written in csh (C-shell) |
| 293 |
that should be used to generate your makefile. The directory |
that should be used to generate your makefile. The directory |
| 294 |
\texttt{adjoint} contains the makefile specific to the Tangent |
\texttt{adjoint} contains the makefile specific to the Tangent |
| 295 |
linear and Adjoint Compiler (TAMC) that generates the adjoint code. |
linear and Adjoint Compiler (TAMC) that generates the adjoint code. |
| 296 |
The latter is described in details in part V. |
The latter is described in detail in part \ref{chap.ecco}. |
| 297 |
|
This directory also contains the subdirectory build\_options, which |
| 298 |
|
contains the `optfiles' with the compiler options for the different |
| 299 |
|
compilers and machines that can run MITgcm. |
| 300 |
|
|
| 301 |
\item \texttt{utils}: this directory contains various utilities. The |
\item \texttt{utils}: this directory contains various utilities. The |
| 302 |
subdirectory \texttt{knudsen2} contains code and a makefile that |
subdirectory \texttt{knudsen2} contains code and a makefile that |
| 305 |
\texttt{matlab} subdirectory contains matlab scripts for reading |
\texttt{matlab} subdirectory contains matlab scripts for reading |
| 306 |
model output directly into matlab. \texttt{scripts} contains C-shell |
model output directly into matlab. \texttt{scripts} contains C-shell |
| 307 |
post-processing scripts for joining processor-based and tiled-based |
post-processing scripts for joining processor-based and tiled-based |
| 308 |
model output. |
model output. The subdirectory exch2 contains the code needed for |
| 309 |
|
the exch2 package to work with different combinations of domain |
| 310 |
|
decompositions. |
| 311 |
|
|
| 312 |
\item \texttt{verification}: this directory contains the model |
\item \texttt{verification}: this directory contains the model |
| 313 |
examples. See section \ref{sect:modelExamples}. |
examples. See section \ref{sec:modelExamples}. |
|
|
|
|
\end{itemize} |
|
|
|
|
|
\section[MITgcm Example Experiments]{Example experiments} |
|
|
\label{sect:modelExamples} |
|
|
\begin{rawhtml} |
|
|
<!-- CMIREDIR:modelExamples: --> |
|
|
\end{rawhtml} |
|
|
|
|
|
%% a set of twenty-four pre-configured numerical experiments |
|
|
|
|
|
The full MITgcm distribution comes with more than a dozen |
|
|
pre-configured numerical experiments. Some of these example |
|
|
experiments are tests of individual parts of the model code, but many |
|
|
are fully fledged numerical simulations. A few of the examples are |
|
|
used for tutorial documentation in sections \ref{sect:eg-baro} - |
|
|
\ref{sect:eg-global}. The other examples follow the same general |
|
|
structure as the tutorial examples. However, they only include brief |
|
|
instructions in a text file called {\it README}. The examples are |
|
|
located in subdirectories under the directory \texttt{verification}. |
|
|
Each example is briefly described below. |
|
|
|
|
|
\subsection{Full list of model examples} |
|
|
|
|
|
\begin{enumerate} |
|
|
|
|
|
\item \texttt{exp0} - single layer, ocean double gyre (barotropic with |
|
|
free-surface). This experiment is described in detail in section |
|
|
\ref{sect:eg-baro}. |
|
|
|
|
|
\item \texttt{exp1} - Four layer, ocean double gyre. This experiment |
|
|
is described in detail in section \ref{sect:eg-baroc}. |
|
|
|
|
|
\item \texttt{exp2} - 4x4 degree global ocean simulation with steady |
|
|
climatological forcing. This experiment is described in detail in |
|
|
section \ref{sect:eg-global}. |
|
|
|
|
|
\item \texttt{exp4} - Flow over a Gaussian bump in open-water or |
|
|
channel with open boundaries. |
|
|
|
|
|
\item \texttt{exp5} - Inhomogenously forced ocean convection in a |
|
|
doubly periodic box. |
|
|
|
|
|
\item \texttt{front\_relax} - Relaxation of an ocean thermal front (test for |
|
|
Gent/McWilliams scheme). 2D (Y-Z). |
|
|
|
|
|
\item \texttt{internal wave} - Ocean internal wave forced by open |
|
|
boundary conditions. |
|
|
|
|
|
\item \texttt{natl\_box} - Eastern subtropical North Atlantic with KPP |
|
|
scheme; 1 month integration |
|
|
|
|
|
\item \texttt{hs94.1x64x5} - Zonal averaged atmosphere using Held and |
|
|
Suarez '94 forcing. |
|
|
|
|
|
\item \texttt{hs94.128x64x5} - 3D atmosphere dynamics using Held and |
|
|
Suarez '94 forcing. |
|
|
|
|
|
\item \texttt{hs94.cs-32x32x5} - 3D atmosphere dynamics using Held and |
|
|
Suarez '94 forcing on the cubed sphere. |
|
|
|
|
|
\item \texttt{aim.5l\_zon-ave} - Intermediate Atmospheric physics. |
|
|
Global Zonal Mean configuration, 1x64x5 resolution. |
|
|
|
|
|
\item \texttt{aim.5l\_XZ\_Equatorial\_Slice} - Intermediate |
|
|
Atmospheric physics, equatorial Slice configuration. 2D (X-Z). |
|
|
|
|
|
\item \texttt{aim.5l\_Equatorial\_Channel} - Intermediate Atmospheric |
|
|
physics. 3D Equatorial Channel configuration. |
|
|
|
|
|
\item \texttt{aim.5l\_LatLon} - Intermediate Atmospheric physics. |
|
|
Global configuration, on latitude longitude grid with 128x64x5 grid |
|
|
points ($2.8^\circ$ resolution). |
|
|
|
|
|
\item \texttt{adjustment.128x64x1} Barotropic adjustment problem on |
|
|
latitude longitude grid with 128x64 grid points ($2.8^\circ$ resolution). |
|
|
|
|
|
\item \texttt{adjustment.cs-32x32x1} Barotropic adjustment problem on |
|
|
cube sphere grid with 32x32 points per face (roughly $2.8^\circ$ |
|
|
resolution). |
|
|
|
|
|
\item \texttt{advect\_cs} Two-dimensional passive advection test on |
|
|
cube sphere grid. |
|
|
|
|
|
\item \texttt{advect\_xy} Two-dimensional (horizontal plane) passive |
|
|
advection test on Cartesian grid. |
|
|
|
|
|
\item \texttt{advect\_yz} Two-dimensional (vertical plane) passive |
|
|
advection test on Cartesian grid. |
|
|
|
|
|
\item \texttt{carbon} Simple passive tracer experiment. Includes |
|
|
derivative calculation. Described in detail in section |
|
|
\ref{sect:eg-carbon-ad}. |
|
|
|
|
|
\item \texttt{flt\_example} Example of using float package. |
|
|
|
|
|
\item \texttt{global\_ocean.90x40x15} Global circulation with GM, flux |
|
|
boundary conditions and poles. |
|
|
|
|
|
\item \texttt{global\_ocean\_pressure} Global circulation in pressure |
|
|
coordinate (non-Boussinesq ocean model). Described in detail in |
|
|
section \ref{sect:eg-globalpressure}. |
|
|
|
|
|
\item \texttt{solid-body.cs-32x32x1} Solid body rotation test for cube |
|
|
sphere grid. |
|
|
|
|
|
\end{enumerate} |
|
|
|
|
|
\subsection{Directory structure of model examples} |
|
|
|
|
|
Each example directory has the following subdirectories: |
|
|
|
|
|
\begin{itemize} |
|
|
\item \texttt{code}: contains the code particular to the example. At a |
|
|
minimum, this directory includes the following files: |
|
|
|
|
|
\begin{itemize} |
|
|
\item \texttt{code/packages.conf}: declares the list of packages or |
|
|
package groups to be used. If not included, the default version |
|
|
is located in \texttt{pkg/pkg\_default}. Package groups are |
|
|
simply convenient collections of commonly used packages which are |
|
|
defined in \texttt{pkg/pkg\_default}. Some packages may require |
|
|
other packages or may require their absence (that is, they are |
|
|
incompatible) and these package dependencies are listed in |
|
|
\texttt{pkg/pkg\_depend}. |
|
|
|
|
|
\item \texttt{code/CPP\_EEOPTIONS.h}: declares CPP keys relative to |
|
|
the ``execution environment'' part of the code. The default |
|
|
version is located in \texttt{eesupp/inc}. |
|
|
|
|
|
\item \texttt{code/CPP\_OPTIONS.h}: declares CPP keys relative to |
|
|
the ``numerical model'' part of the code. The default version is |
|
|
located in \texttt{model/inc}. |
|
|
|
|
|
\item \texttt{code/SIZE.h}: declares size of underlying |
|
|
computational grid. The default version is located in |
|
|
\texttt{model/inc}. |
|
|
\end{itemize} |
|
|
|
|
|
In addition, other include files and subroutines might be present in |
|
|
\texttt{code} depending on the particular experiment. See Section 2 |
|
|
for more details. |
|
|
|
|
|
\item \texttt{input}: contains the input data files required to run |
|
|
the example. At a minimum, the \texttt{input} directory contains the |
|
|
following files: |
|
| 314 |
|
|
| 315 |
\begin{itemize} |
\item \texttt{jobs}: contains sample job scripts for running MITgcm. |
|
\item \texttt{input/data}: this file, written as a namelist, |
|
|
specifies the main parameters for the experiment. |
|
| 316 |
|
|
| 317 |
\item \texttt{input/data.pkg}: contains parameters relative to the |
\item \texttt{lsopt}: Line search code used for optimization. |
|
packages used in the experiment. |
|
| 318 |
|
|
| 319 |
\item \texttt{input/eedata}: this file contains ``execution |
\item \texttt{optim}: Interface between MITgcm and line search code. |
|
environment'' data. At present, this consists of a specification |
|
|
of the number of threads to use in $X$ and $Y$ under multithreaded |
|
|
execution. |
|
|
\end{itemize} |
|
| 320 |
|
|
|
In addition, you will also find in this directory the forcing and |
|
|
topography files as well as the files describing the initial state |
|
|
of the experiment. This varies from experiment to experiment. See |
|
|
section 2 for more details. |
|
|
|
|
|
\item \texttt{results}: this directory contains the output file |
|
|
\texttt{output.txt} produced by the simulation example. This file is |
|
|
useful for comparison with your own output when you run the |
|
|
experiment. |
|
| 321 |
\end{itemize} |
\end{itemize} |
| 322 |
|
|
|
Once you have chosen the example you want to run, you are ready to |
|
|
compile the code. |
|
|
|
|
| 323 |
\section[Building MITgcm]{Building the code} |
\section[Building MITgcm]{Building the code} |
| 324 |
\label{sect:buildingCode} |
\label{sec:buildingCode} |
| 325 |
\begin{rawhtml} |
\begin{rawhtml} |
| 326 |
<!-- CMIREDIR:buildingCode: --> |
<!-- CMIREDIR:buildingCode: --> |
| 327 |
\end{rawhtml} |
\end{rawhtml} |
| 330 |
file (\texttt{Makefile}) that allows us to pre-process source files, |
file (\texttt{Makefile}) that allows us to pre-process source files, |
| 331 |
specify compiler and optimization options and also figures out any |
specify compiler and optimization options and also figures out any |
| 332 |
file dependencies. We supply a script (\texttt{genmake2}), described |
file dependencies. We supply a script (\texttt{genmake2}), described |
| 333 |
in section \ref{sect:genmake}, that automatically creates the |
in section \ref{sec:genmake}, that automatically creates the |
| 334 |
\texttt{Makefile} for you. You then need to build the dependencies and |
\texttt{Makefile} for you. You then need to build the dependencies and |
| 335 |
compile the code. |
compile the code. |
| 336 |
|
|
| 405 |
number of CPUs available. |
number of CPUs available. |
| 406 |
|
|
| 407 |
Now you are ready to run the model. General instructions for doing so are |
Now you are ready to run the model. General instructions for doing so are |
| 408 |
given in section \ref{sect:runModel}. Here, we can run the model by |
given in section \ref{sec:runModel}. Here, we can run the model by |
| 409 |
first creating links to all the input files: |
first creating links to all the input files: |
| 410 |
\begin{verbatim} |
\begin{verbatim} |
| 411 |
ln -s ../input/* . |
ln -s ../input/* . |
| 419 |
|
|
| 420 |
\subsection{Building/compiling the code elsewhere} |
\subsection{Building/compiling the code elsewhere} |
| 421 |
|
|
| 422 |
In the example above (section \ref{sect:buildingCode}) we built the |
In the example above (section \ref{sec:buildingCode}) we built the |
| 423 |
executable in the {\em input} directory of the experiment for |
executable in the {\em input} directory of the experiment for |
| 424 |
convenience. You can also configure and compile the code in other |
convenience. You can also configure and compile the code in other |
| 425 |
locations, for example on a scratch disk with out having to copy the |
locations, for example on a scratch disk with out having to copy the |
| 523 |
|
|
| 524 |
|
|
| 525 |
\subsection{Using \texttt{genmake2}} |
\subsection{Using \texttt{genmake2}} |
| 526 |
\label{sect:genmake} |
\label{sec:genmake} |
| 527 |
|
|
| 528 |
To compile the code, first use the program \texttt{genmake2} (located |
To compile the code, first use the program \texttt{genmake2} (located |
| 529 |
in the \texttt{tools} directory) to generate a Makefile. |
in the \texttt{tools} directory) to generate a Makefile. |
| 530 |
\texttt{genmake2} is a shell script written to work with all |
\texttt{genmake2} is a shell script written to work with all |
| 531 |
``sh''--compatible shells including bash v1, bash v2, and Bourne. |
``sh''--compatible shells including bash v1, bash v2, and Bourne. |
| 532 |
Internally, \texttt{genmake2} determines the locations of needed |
%Internally, \texttt{genmake2} determines the locations of needed |
| 533 |
files, the compiler, compiler options, libraries, and Unix tools. It |
%files, the compiler, compiler options, libraries, and Unix tools. It |
| 534 |
relies upon a number of ``optfiles'' located in the |
%relies upon a number of ``optfiles'' located in the |
| 535 |
\texttt{tools/build\_options} directory. |
%\texttt{tools/build\_options} directory. |
| 536 |
|
\texttt{genmake2} parses information from the following sources: |
| 537 |
|
\begin{description} |
| 538 |
|
\item[-] a {\em gemake\_local} file if one is found in the current |
| 539 |
|
directory |
| 540 |
|
\item[-] command-line options |
| 541 |
|
\item[-] an "options file" as specified by the command-line option |
| 542 |
|
\texttt{--optfile=/PATH/FILENAME} |
| 543 |
|
\item[-] a {\em packages.conf} file (if one is found) with the |
| 544 |
|
specific list of packages to compile. The search path for |
| 545 |
|
file {\em packages.conf} is, first, the current directory and |
| 546 |
|
then each of the "MODS" directories in the given order (see below). |
| 547 |
|
\end{description} |
| 548 |
|
|
| 549 |
|
\subsubsection{Optfiles in \texttt{tools/build\_options} directory:} |
| 550 |
|
|
| 551 |
The purpose of the optfiles is to provide all the compilation options |
The purpose of the optfiles is to provide all the compilation options |
| 552 |
for particular ``platforms'' (where ``platform'' roughly means the |
for particular ``platforms'' (where ``platform'' roughly means the |
| 619 |
\begin{rawhtml} </A> \end{rawhtml} |
\begin{rawhtml} </A> \end{rawhtml} |
| 620 |
mailing list. |
mailing list. |
| 621 |
|
|
| 622 |
|
\subsubsection{Command-line options:} |
| 623 |
|
|
| 624 |
In addition to the optfiles, \texttt{genmake2} supports a number of |
In addition to the optfiles, \texttt{genmake2} supports a number of |
| 625 |
helpful command-line options. A complete list of these options can be |
helpful command-line options. A complete list of these options can be |
| 626 |
obtained from: |
obtained from: |
| 643 |
the user's path. When these three items have been identified, |
the user's path. When these three items have been identified, |
| 644 |
genmake2 will try to find an optfile that has a matching name. |
genmake2 will try to find an optfile that has a matching name. |
| 645 |
|
|
| 646 |
\item[\texttt{--pdefault='PKG1 PKG2 PKG3 ...'}] specifies the default |
\item[\texttt{--mods='DIR1 DIR2 DIR3 ...'}] specifies a list of |
| 647 |
set of packages to be used. The normal order of precedence for |
directories containing ``modifications''. These directories contain |
| 648 |
packages is as follows: |
files with names that may (or may not) exist in the main MITgcm |
| 649 |
\begin{enumerate} |
source tree but will be overridden by any identically-named sources |
| 650 |
\item If available, the command line (\texttt{--pdefault}) settings |
within the ``MODS'' directories. |
| 651 |
over-rule any others. |
|
| 652 |
|
The order of precedence for this "name-hiding" is as follows: |
| 653 |
\item Next, \texttt{genmake2} will look for a file named |
\begin{itemize} |
| 654 |
``\texttt{packages.conf}'' in the local directory or in any of the |
\item ``MODS'' directories (in the order given) |
| 655 |
directories specified with the \texttt{--mods} option. |
\item Packages either explicitly specified or provided by default |
| 656 |
|
(in the order given) |
| 657 |
\item Finally, if neither of the above are available, |
\item Packages included due to package dependencies (in the order |
| 658 |
\texttt{genmake2} will use the \texttt{/pkg/pkg\_default} file. |
that that package dependencies are parsed) |
| 659 |
\end{enumerate} |
\item The "standard dirs" (which may have been specified by the |
| 660 |
|
``-standarddirs'' option) |
| 661 |
|
\end{itemize} |
| 662 |
|
|
| 663 |
|
\item[\texttt{--pgroups=/PATH/FILENAME}] specifies the file |
| 664 |
|
where package groups are defined. If not set, the package-groups |
| 665 |
|
definition will be read from {\em pkg/pkg\_groups}. |
| 666 |
|
It also contains the default list of packages (defined |
| 667 |
|
as the group ``{\it default\_pkg\_list}'' which is used |
| 668 |
|
when no specific package list ({\em packages.conf}) |
| 669 |
|
is found in current directory or in any "MODS" directory. |
| 670 |
|
|
| 671 |
\item[\texttt{--pdepend=/PATH/FILENAME}] specifies the dependency file |
\item[\texttt{--pdepend=/PATH/FILENAME}] specifies the dependency file |
| 672 |
used for packages. |
used for packages. |
| 673 |
|
|
| 692 |
"STAF" compiler. As with any compilers, it is helpful to have their |
"STAF" compiler. As with any compilers, it is helpful to have their |
| 693 |
directories listed in your {\tt \$PATH} environment variable. |
directories listed in your {\tt \$PATH} environment variable. |
| 694 |
|
|
|
\item[\texttt{--mods='DIR1 DIR2 DIR3 ...'}] specifies a list of |
|
|
directories containing ``modifications''. These directories contain |
|
|
files with names that may (or may not) exist in the main MITgcm |
|
|
source tree but will be overridden by any identically-named sources |
|
|
within the ``MODS'' directories. |
|
|
|
|
|
The order of precedence for this "name-hiding" is as follows: |
|
|
\begin{itemize} |
|
|
\item ``MODS'' directories (in the order given) |
|
|
\item Packages either explicitly specified or provided by default |
|
|
(in the order given) |
|
|
\item Packages included due to package dependencies (in the order |
|
|
that that package dependencies are parsed) |
|
|
\item The "standard dirs" (which may have been specified by the |
|
|
``-standarddirs'' option) |
|
|
\end{itemize} |
|
|
|
|
| 695 |
\item[\texttt{--mpi}] This option enables certain MPI features (using |
\item[\texttt{--mpi}] This option enables certain MPI features (using |
| 696 |
CPP \texttt{\#define}s) within the code and is necessary for MPI |
CPP \texttt{\#define}s) within the code and is necessary for MPI |
| 697 |
builds (see Section \ref{sect:mpi-build}). |
builds (see Section \ref{sec:mpi-build}). |
| 698 |
|
|
| 699 |
\item[\texttt{--make=/path/to/gmake}] Due to the poor handling of |
\item[\texttt{--make=/path/to/gmake}] Due to the poor handling of |
| 700 |
soft-links and other bugs common with the \texttt{make} versions |
soft-links and other bugs common with the \texttt{make} versions |
| 717 |
|
|
| 718 |
|
|
| 719 |
\subsection{Building with MPI} |
\subsection{Building with MPI} |
| 720 |
\label{sect:mpi-build} |
\label{sec:mpi-build} |
| 721 |
|
|
| 722 |
Building MITgcm to use MPI libraries can be complicated due to the |
Building MITgcm to use MPI libraries can be complicated due to the |
| 723 |
variety of different MPI implementations available, their dependencies |
variety of different MPI implementations available, their dependencies |
| 732 |
|
|
| 733 |
\item Determine the locations of your MPI-enabled compiler and/or MPI |
\item Determine the locations of your MPI-enabled compiler and/or MPI |
| 734 |
libraries and put them into an options file as described in Section |
libraries and put them into an options file as described in Section |
| 735 |
\ref{sect:genmake}. One can start with one of the examples in: |
\ref{sec:genmake}. One can start with one of the examples in: |
| 736 |
\begin{rawhtml} <A |
\begin{rawhtml} <A |
| 737 |
href="http://mitgcm.org/cgi-bin/viewcvs.cgi/MITgcm/tools/build_options/"> |
href="http://mitgcm.org/viewvc/MITgcm/MITgcm/tools/build_options/"> |
| 738 |
\end{rawhtml} |
\end{rawhtml} |
| 739 |
\begin{center} |
\begin{center} |
| 740 |
\texttt{MITgcm/tools/build\_options/} |
\texttt{MITgcm/tools/build\_options/} |
| 767 |
\end{itemize} |
\end{itemize} |
| 768 |
|
|
| 769 |
\item Build the code with the \texttt{genmake2} \texttt{-mpi} option |
\item Build the code with the \texttt{genmake2} \texttt{-mpi} option |
| 770 |
(see Section \ref{sect:genmake}) using commands such as: |
(see Section \ref{sec:genmake}) using commands such as: |
| 771 |
{\footnotesize \begin{verbatim} |
{\footnotesize \begin{verbatim} |
| 772 |
% ../../../tools/genmake2 -mods=../code -mpi -of=YOUR_OPTFILE |
% ../../../tools/genmake2 -mods=../code -mpi -of=YOUR_OPTFILE |
| 773 |
% make depend |
% make depend |
| 785 |
library and a job scheduling and queueing system such as PBS, |
library and a job scheduling and queueing system such as PBS, |
| 786 |
LoadLeveller, Condor, or any of a number of similar tools. A few |
LoadLeveller, Condor, or any of a number of similar tools. A few |
| 787 |
example scripts (those used for our \begin{rawhtml} <A |
example scripts (those used for our \begin{rawhtml} <A |
| 788 |
href="http://mitgcm.org/testing.html"> \end{rawhtml}regular |
href="http://mitgcm.org/public/testing.html"> \end{rawhtml}regular |
| 789 |
verification runs\begin{rawhtml} </A> \end{rawhtml}) are available |
verification runs\begin{rawhtml} </A> \end{rawhtml}) are available |
| 790 |
at: |
at: |
| 791 |
\begin{rawhtml} <A |
\begin{rawhtml} <A |
| 792 |
href="http://mitgcm.org/cgi-bin/viewcvs.cgi/MITgcm_contrib/test_scripts/"> |
href="http://mitgcm.org/viewvc/MITgcm/MITgcm/tools/example_scripts/"> |
| 793 |
\end{rawhtml} |
\end{rawhtml} |
| 794 |
{\footnotesize \tt |
{\footnotesize \tt |
| 795 |
http://mitgcm.org/cgi-bin/viewcvs.cgi/MITgcm\_contrib/test\_scripts/ } |
http://mitgcm.org/viewvc/MITgcm/MITgcm/tools/example\_scripts/ } |
| 796 |
|
\begin{rawhtml} </A> \end{rawhtml} |
| 797 |
|
or at: |
| 798 |
|
\begin{rawhtml} <A |
| 799 |
|
href="http://mitgcm.org/viewvc/MITgcm/MITgcm_contrib/test_scripts/"> |
| 800 |
|
\end{rawhtml} |
| 801 |
|
{\footnotesize \tt |
| 802 |
|
http://mitgcm.org/viewvc/MITgcm/MITgcm\_contrib/test\_scripts/ } |
| 803 |
\begin{rawhtml} </A> \end{rawhtml} |
\begin{rawhtml} </A> \end{rawhtml} |
| 804 |
|
|
| 805 |
\end{enumerate} |
\end{enumerate} |
| 821 |
\end{verbatim} } |
\end{verbatim} } |
| 822 |
|
|
| 823 |
\section[Running MITgcm]{Running the model in prognostic mode} |
\section[Running MITgcm]{Running the model in prognostic mode} |
| 824 |
\label{sect:runModel} |
\label{sec:runModel} |
| 825 |
\begin{rawhtml} |
\begin{rawhtml} |
| 826 |
<!-- CMIREDIR:runModel: --> |
<!-- CMIREDIR:runModel: --> |
| 827 |
\end{rawhtml} |
\end{rawhtml} |
| 828 |
|
|
| 829 |
If compilation finished succesfully (section \ref{sect:buildingCode}) |
If compilation finished succesfully (section \ref{sec:buildingCode}) |
| 830 |
then an executable called \texttt{mitgcmuv} will now exist in the |
then an executable called \texttt{mitgcmuv} will now exist in the |
| 831 |
local directory. |
local directory. |
| 832 |
|
|
| 918 |
used to restart the model but are overwritten every other time they are |
used to restart the model but are overwritten every other time they are |
| 919 |
output to save disk space during long integrations. |
output to save disk space during long integrations. |
| 920 |
|
|
|
|
|
|
|
|
| 921 |
\subsubsection{MNC output files} |
\subsubsection{MNC output files} |
| 922 |
|
|
| 923 |
Unlike the \texttt{mdsio} output, the \texttt{mnc}--generated output |
Unlike the \texttt{mdsio} output, the \texttt{mnc}--generated output |
| 924 |
is usually (though not necessarily) placed within a subdirectory with |
is usually (though not necessarily) placed within a subdirectory with |
| 925 |
a name such as \texttt{mnc\_test\_\${DATE}\_\${SEQ}}. The files |
a name such as \texttt{mnc\_test\_\${DATE}\_\${SEQ}}. |
|
within this subdirectory are all in the ``self-describing'' netCDF |
|
|
format and can thus be browsed and/or plotted using tools such as: |
|
|
\begin{itemize} |
|
|
\item \texttt{ncdump} is a utility which is typically included |
|
|
with every netCDF install: |
|
|
\begin{rawhtml} <A href="http://www.unidata.ucar.edu/packages/netcdf/"> \end{rawhtml} |
|
|
\begin{verbatim} |
|
|
http://www.unidata.ucar.edu/packages/netcdf/ |
|
|
\end{verbatim} |
|
|
\begin{rawhtml} </A> \end{rawhtml} and it converts the netCDF |
|
|
binaries into formatted ASCII text files. |
|
|
|
|
|
\item \texttt{ncview} utility is a very convenient and quick way |
|
|
to plot netCDF data and it runs on most OSes: |
|
|
\begin{rawhtml} <A href="http://meteora.ucsd.edu/~pierce/ncview_home_page.html"> \end{rawhtml} |
|
|
\begin{verbatim} |
|
|
http://meteora.ucsd.edu/~pierce/ncview_home_page.html |
|
|
\end{verbatim} |
|
|
\begin{rawhtml} </A> \end{rawhtml} |
|
|
|
|
|
\item MatLAB(c) and other common post-processing environments provide |
|
|
various netCDF interfaces including: |
|
|
\begin{rawhtml} <A href="http://mexcdf.sourceforge.net/"> \end{rawhtml} |
|
|
\begin{verbatim} |
|
|
http://mexcdf.sourceforge.net/ |
|
|
\end{verbatim} |
|
|
\begin{rawhtml} </A> \end{rawhtml} |
|
|
\begin{rawhtml} <A href="http://woodshole.er.usgs.gov/staffpages/cdenham/public_html/MexCDF/nc4ml5.html"> \end{rawhtml} |
|
|
\begin{verbatim} |
|
|
http://woodshole.er.usgs.gov/staffpages/cdenham/public_html/MexCDF/nc4ml5.html |
|
|
\end{verbatim} |
|
|
\begin{rawhtml} </A> \end{rawhtml} |
|
|
\end{itemize} |
|
|
|
|
| 926 |
|
|
| 927 |
\subsection{Looking at the output} |
\subsection{Looking at the output} |
| 928 |
|
|
| 958 |
Similar scripts for netCDF output (\texttt{rdmnc.m}) are available and |
Similar scripts for netCDF output (\texttt{rdmnc.m}) are available and |
| 959 |
they are described in Section \ref{sec:pkg:mnc}. |
they are described in Section \ref{sec:pkg:mnc}. |
| 960 |
|
|
| 961 |
|
The MNC output files are all in the ``self-describing'' netCDF |
| 962 |
|
format and can thus be browsed and/or plotted using tools such as: |
| 963 |
|
\begin{itemize} |
| 964 |
|
\item \texttt{ncdump} is a utility which is typically included |
| 965 |
|
with every netCDF install: |
| 966 |
|
\begin{rawhtml} <A href="http://www.unidata.ucar.edu/packages/netcdf/"> \end{rawhtml} |
| 967 |
|
\begin{verbatim} |
| 968 |
|
http://www.unidata.ucar.edu/packages/netcdf/ |
| 969 |
|
\end{verbatim} |
| 970 |
|
\begin{rawhtml} </A> \end{rawhtml} and it converts the netCDF |
| 971 |
|
binaries into formatted ASCII text files. |
| 972 |
|
|
| 973 |
|
\item \texttt{ncview} utility is a very convenient and quick way |
| 974 |
|
to plot netCDF data and it runs on most OSes: |
| 975 |
|
\begin{rawhtml} <A href="http://meteora.ucsd.edu/~pierce/ncview_home_page.html"> \end{rawhtml} |
| 976 |
|
\begin{verbatim} |
| 977 |
|
http://meteora.ucsd.edu/~pierce/ncview_home_page.html |
| 978 |
|
\end{verbatim} |
| 979 |
|
\begin{rawhtml} </A> \end{rawhtml} |
| 980 |
|
|
| 981 |
|
\item MatLAB(c) and other common post-processing environments provide |
| 982 |
|
various netCDF interfaces including: |
| 983 |
|
\begin{rawhtml} <A href="http://mexcdf.sourceforge.net/"> \end{rawhtml} |
| 984 |
|
\begin{verbatim} |
| 985 |
|
http://mexcdf.sourceforge.net/ |
| 986 |
|
\end{verbatim} |
| 987 |
|
\begin{rawhtml} </A> \end{rawhtml} |
| 988 |
|
\begin{rawhtml} <A href="http://woodshole.er.usgs.gov/staffpages/cdenham/public_html/MexCDF/nc4ml5.html"> \end{rawhtml} |
| 989 |
|
\begin{verbatim} |
| 990 |
|
http://woodshole.er.usgs.gov/staffpages/cdenham/public_html/MexCDF/nc4ml5.html |
| 991 |
|
\end{verbatim} |
| 992 |
|
\begin{rawhtml} </A> \end{rawhtml} |
| 993 |
|
\end{itemize} |
| 994 |
|
|