The GISS Coupled Model is a 12 atmosphere layer 13 ocean layer coupled GCM with a resolution of 4x5 latitude by longitude. In order to run the model on an Apple G5 running OS X 10.X follow the instructions below

1. Download the model and the input files
   

   
   % wget http://columbia.edu/~mac59/pliocene/CoupledModel/GSO.zip
   % wget http://columbia.edu/~mac59/pliocene/CoupledModel/GSO_inputs.tar.gz
   
   

2. Unpack the model and the input files into a directory of your choice. In this example we choose a folder named GCM

   
   % unzip GSO.zip
   % mv GSO_inputs.tar.gz GSO/
   % cd GSO
   % tar -zxvf GSO_inputs.tar.gz
   % ls -l
   -rw-r--r--    1 mankoff  mankoff      4471 May 29 08:32 GSOfoo.R
   -rw-r--r--    1 mankoff  mankoff      4477 May 29 08:32 GSOpH2M12.R
   drwxr-xr-x   52 mankoff  mankoff      1768 May 29 08:32 code
   drwxr-xr-x   27 mankoff  mankoff       918 Apr  8 17:50 input
   
   

3. Compile the code. You need the IBM XLF compiler.

   
   make
   
   

4. Start the run

   
   cd output/GSOfoo
   ../../BAO23M12xln
   ./GSOfoo.exe < ../../I