Test post from TextMate

This is my first test post from textmate. Let me try to edit it a bit more.. How about a link in [markdown][].

Compiling netcdf with ifort 9.1 on an Intel Mac

First, if you haven't already done so, you need to do this if you are runing Xcode 2.3, like I am. Otherwise, ifort will not make it through configure.

cd /usr/lib
sudo ln -s gcc/darwin/3.3/crt2.o .

Then, you can set up your environmental variables just like you would using ifort in Linux. For example:

export FC=ifort
export F90=ifort
export FFLAGS="-O -mp"
export CPPFLAGS="-DNDEBUG -DpgiFortran"

Then, like always, run

./configure --prefix=/usr/local
make

Shed Skin -- python to C++ compiler

Shed Skin - Shed Skin is a compiler that takes pure python code, and coverts it to annotated C++ code. Speedup is (suposedly) much higher than other similar methods.

Creating an SVN repository.

First, make sure you have a WebDAV module turned on in you apache server. You need to configure your apache server as described [here](http://www.csoft.net/docs/micro/svndav.html) or [here](href="http://svnbook.red-bean.com/en/1.1/ch06s04.html), for example. Of particular note allowing anonymous access through LimitExcept, and creating a root svn directory for numerous repositories by using SVNParentPath. You can then access this server using svn, a web browser, or mount it like a networked disk. Very cool.

After you set up the WebDAV server, you need to create a snv repository. Here is how I made a repository for my python modules:

# cd /home/svn
# svnadmin create python
# svn mkdir file:///home/svn/python/trunk file:///home/svn/python/branches file:///home/svn/python/tags -m "creating initial repository layout"

You may need to change permissions so that httpd can read this directory. Now, as a user, you can start to populate the reposatory. I will add a directory 'gridgen' and the file 'gridgen.py'. There are some other things in this directory that I don't want to add, so I won't just add the whole thing, but rather I will do it piece by piece. Note, I will log in as a registered user, so that I can write to the repository later.

$ svn co http://rob@pong.tamu.edu/svn/python/trunk python
$ svn add gridgen --non-recursive
$ svn add gridgen/gridgen.py
$ svn commit -m "Initial commit of gridgen module"

stack size limits using ifort

I use ifort on both Linux and Intel Macs. I have come across some strange behaviors that make me think that the stack is not really unlimited. This post on automatic array stack size limit bug - Intel Fortran Compiler for Linux and Mac OS - Intel Software Network Forumsto the ifort message boards seems to suggest this is a bug in ifort.

This seems to be less of an issue on my Linux machines, where I can set ulimit to unlimited (particularly the stack). On my Mac, I can't set ulimit to unlimited (and if you want to increase it at all, you need to add a flag that lets you use the 'soft' limit). As far as I can tell, partitioning through MPI does not seem to help, but I will look into it more.

Map Projections Poster

Although 'poster' seems a bit of an exageration, the Map Projections Poster is the best source I have found so far for describing the different mapping projections.