GEOS-5 Checkout and Build Instructions

The instructions on this page are a summary of the GEOS-5 tutorial Arlindo da Silva has been presenting. For the moment, we presume that the user has an account on sourcemotel and access to the NCCS machines (e.g., discover).

How to Check Out the Code

Find a place to store and build the code

The GEOS-5 (AGCM) source code checks out at about 40 MB of space. Once compiled, the complete package is about 500 MB. Your home space on discover may not be sufficient for checking out and building the code. You should consider either requesting either a larger quota in your home space (call the tag x6-9120 and ask, telling them you are doing GEOS-5 development work) or building in your (larger) nobackup space. But consider, nobackup is not backed up. So be careful...

Setup your environment to check out code

With the above step complete, let's get ourselves ready to check out the code. We'll be using the UNIX cvs command to check out the code. The basic syntax is:

% cvs -d $CVSROOT checkout -r TAGNAME MODULENAME

Here, $CVSROOT specifies the CVS repository we'll be getting the code from, MODULENAME is the particular module (set of code) we'll be checking out, and TAGNAME is a particular version of that module. Let's fill in the blanks:

% cvs -d :ext:c-sourcemotel.gsfc.nasa.gov:/cvsroot/esma co -r GEOSdas-2_1_6 GEOSagcm

So our module is GEOSagcm and the tag is GEOSdas-2_1_6. Note that I substituted the shortcut co for checkout in the above command.

The above command is generally valid. You ought to be able to execute it and checkout some code. If you don't have your ssh keys setup on sourcemotel then you should be prompted for your sourcemotel password. The assumption here is that your username on sourcemotel is the same as on the machine you are checking the code out on. If not, modify the command like this:

% cvs -d :ext:SOURCEMOTEL_USERNAME@c-sourcemotel.gsfc.nasa.gov:/cvsroot/esma co -r GEOSdas-2_1_6 GEOSagcm

Here's a couple of short cuts. So that you don't have to type in the -d :ext:c-sourcemotel.gsfc.nasa.gov:/cvsroot/esma business all the time, you can add the following lines to your, e.g., .cshrc file: setenv CVSROOT \':ext:c-sourcemotel.gsfc.nasa.gov:/cvsroot/esma\' setenv CVS_RSH ssh