Installation of the AMUSE software

Before installing AMUSE the prerequisite software must be downloaded and installed, see Installation of the prerequisite software.

In the current stage of development AMUSE will not be installed in the python site-packages library. Instead, all code is build in the AMUSE source directories. With this setup we can easily edit the code and run it, without the need for an extra installation step.

Configuring the code

The code is configured using the configure command. Before building the code, run ‘configure’ in the AMUSE root directory.

> ./configure

The ‘configure’ script will check for all prerequisite software and report if any are missing.

Building the code

The code is build using a Makefile. To build the code run ‘make’ in the AMUSE root directory.

> make clean
> make
...
legacy codes build
==================
* sse
* hermite0
* bhtree
* phiGRAPE
running generate_main

If everything goes well all legacy codes will be build (sse, hermite0, bhtree and phiGRAPE).

In order to use either MESA, SEBA or ATHENA the codes must be downloaded additionally. This is done automatically after setting the environment variable DOWNLOAD_CODES to 1. Alternatively, instead of a plain ‘make’ like in the example above you could do:

> make DOWNLOAD_CODES=1

or

> make mesa.code DOWNLOAD_CODES=1
> make seba.code DOWNLOAD_CODES=1
> make athena.code DOWNLOAD_CODES=1

Testing the build

Warning

For MPICH2 installations, the mpd process daemon must be started befor testing the code. The mpd application manages the creation of MPI processes. If this is the first time the MPICH2 daemon is run it will complain about a missing .mpd.conf file. Please follow the instructions printed by the mpd daemon.

> mpd &

If the mpd deamon only complains with ‘no mpd.conf’, these are the steps to take, to create a mpd.conf file:

> echo 'MPD_SECRETWORD=secret' > ~/.mpd.conf
> chmod 600 ~/.mpd.conf

Please make sure to replace ‘’‘secret’‘’.

After starting mpd we can start the tests.

The tests are run using the nosetests program.

> nosetests
............................................
Ran 91 tests in 12.013s

OK

Warning

If you have an MPICH2 installation but no mpd program your MPICH2 installation has been configured for the Hydra process manager. To run amuse scripts with the hydra process manager you must start every command with mpiexec:

> mpiexec nosetests -v

If you do not run under mpiexec you get an error with a usage statement. The error starts like this:

unable to parse user arguments

Usage: ./mpiexec [global opts] [exec1 local opts] : [exec2 local opts] : ...

Warning

On some laptops the hostname will not point to the correct internet address. For these laptops you can start the mpd daemon on the localhost ip. To do so, you need to set the --ifhn option:

> mpd --ifhn=localhost &

Warning

On OS X, when you install the prerequisites with macports, nosetests will not have a standard name. It will be named nosetests-<python-version>. So for python2.7 you’ll need to use nosetests-2.7

> nosetests-2.7
............................................

OK

Real-time testing

The code includes support for real-time testing. The real-time testing application monitors the files in the source directories (‘src’ and ‘test’). Every time a file is changed it will run most of the tests. After each test a report is created, this report can be viewed with a web browser.

# go to the AMUSE root directory
# display help information of the realtime_test script
>  python -m support.realtime_test --help
Usage: realtime_test.py [options]

Options:
  -h, --help            show this help message and exit
  -p PORT, --port=PORT  start serving on PORT

# start the python realtime_test script on port 9080
> python -m support.realtime_test -p 9080
starting server on port:  9080
start test run
...
# open a browser to view the results
> firefox http://localhost:9080/

Running the code

A python script will not find the AMUSE code as the code is not installed into the python ‘site-packages’ directory or any other directory that can be found by python automatically.

During a build a shell script is created to run the AMUSE code. To use this script you first have to copy it to a directory in your PATH. The script is called ‘’amuse.sh’‘. After copying this script you can run amuse code from anywhere on your disk by starting ‘amuse.sh’. This script has exactly the same command line parameters as the normal python application.

> amuse.sh
Python 2.6.2 (r262:71600, Sep  1 2009, 16:14:27)
[GCC 4.3.2 20081105 (Red Hat 4.3.2-7)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from amuse.units import units
>>> units.m
unit<m>

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