Setting up a Software Development Environment for SpiNNaker, v7.0

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  1. Install Python requirements.
  2. Install the C development requirements.
  3. Java.
  4. Install an IDE — optional but recommended for ease of use.
  5. Clone the git repositories.
  6. Install the python software in developer mode.
  7. Set up the C environment variables.
  8. Build the C code.
  9. Set up the PyNN links.
  10. Configure the environment.
  11. Run some examples.
  12. Moving away from sPynnaker8.

Python Requirements

  1. Install the general platform requirements
  2. If you would prefer to use a virtualenv, follow these instructions to set up the dependencies.
  3. Install other general dependencies via pip:

    pip install "appdirs>=1.4.2,<2.0.0" future "numpy>=1.12,<1.9999"  "scipy>=0.16.0" "six>=1.8.0" "pylru>=1" enum34 future lxml jsonschema sortedcollections
    pip install  "rig>=2.0.0,<3.0.0" futures enum-compat pytz tzlocal "requests>=2.4.1" matplotlib
    pip install  csa "quantities>=0.12.1" "pynn>=0.9.2,<0.10" "lazyarray>=0.2.9,<=0.4.0" "neo>=0.5.2,< 0.9.0" graphviz

You may need to install python3-tk.

We recommend the use of virtualenv for development work.

The remainder of these installation instructions assume that the command “python” corresponds to the Python version you have installed here (recommended 3.7 or later); please ensure that this is the case.

C Development Requirements

Install a C compiler that is compatible with SpiNNaker and dependencies.

Git Cloning

The repositories to be cloned are shown below.

We recommend that all repositories are cloned into the same parent directory as some of our scripts and tool defaults assume this.

If you are using an IDE, it is recommended that all modules are cloned so that any changes made are automatically reflected across the entirety of the software.

Name URL Code Type
spinnaker_tools C
spinn_common C
SpiNNUtils Python
SpiNNMachine Python
spalloc Python
spalloc_server Python
SpiNNMan Python
SpiNNFrontEndCommon Python and C
SpiNNakerGraphFrontEnd Python and C
sPyNNaker Python and C
sPyNNaker8NewModelTemplate Python and C
PyNN8Examples Python
sPyNNakerVisualisers Python
IntroLab Python
JavaSpiNNaker Optional Java
SupportScripts Python and scripting

The last of these repositories contains a useful selection of scripts for semi-automatically building the toolchain.

The following table contains (self-contained) repositories which are now tested by the toolchain but are not essential for successfully running scripts in e.g. PyNN8Examples. If you are changing an API in sPyNNaker or SpiNNFrontEndCommon and wishing to merge into the master version of the tools then you may need to consider how this affects these repositories.

Name URL Code Type
SpiNNGym Python and C
SpiNNaker_PDP2 Python and C
MarkovChainMonteCarlo Python and C

Java Development kit

A Java JDK will be required in the following conditions

  1. If modifying or even just using the Java versions of the tools
  2. If modifying the Remote Access software for the Human Brain Project portal

A Java JRE will be required

  1. If you are going to use an IDE (which requires Java and does not have one with it)

We recommend the Oracle Java

The tools require at least Java 8 but there is no known reason that a more up to date version cannot be used. We have regularly tested OpenJDK 8 and OpenJDK 11 with no problems.

Java version of the tools

Part of the toolchain can be run using Java (this is optional and off by default).

To use it you need the JavaSpiNNaker repository, and you will be required to build the jar file required.

Open JavaSpiNNaker in an IDE which supports maven.

Build “SpiNNaker Java Host” with dependencies. This will create the SpiNNaker-comms-0.0.1-SNAPSHOT.jar file in SpiNNaker-comms/target

It is also possible to install maven and run “mvn package” on the command line from the JavaSpiNNaker directory.

See Configure the environment for how to activate Java.

Integrated Development Environment

Although optional, we highly recommend the use of an Integrated Development Environment (IDE). The code-base is large and complex and an IDE helps to simplify the development process. Within the team at Manchester, we use two IDEs with different benefits and issues. The installation of these is detailed below.

  • PyCharm — Version 4.5.3 has been tested but other versions should also work. This is very good for Python development and supports C development as well to some degree. Java development is not supported in this client. PyCharm is good at working out the links between Python code.

  • Eclipse — Eclipse Oxygen has been thoroughly tested, but other versions should also work. So far, we have been downloading the “Eclipse IDE for Java Developers” as the starting point, and then adding the packages as detailed below. Eclipse supports development in multiple languages through the addition of plugins. Several plugins exist for doing a wide variety of development tasks, including Python, C and Java; Eclipse is the way to go if you are planning on developing in Java. However, Eclipse is known to require quite a lot of memory (around 1GB just for eclipse). A non-exhaustive list of plugins required are:

    • PyDev — This is required for Python Development. This can be installed from the Eclipse Marketplace (Help → Eclipse MarketPlace…) by searching for pydev.
    • CDT — This is required for C Development. This has to be installed from the Help → Install New Software… menu option. Here, paste in this URL: CDT — You can then select to install “C/C++ Development Tools” as well as “C/C++ GCC Cross Compiler Support”, “C/C++ Autotools Support” and “C/C++ GDB Hardware Debugging”.
    • AnyEditTools — This optional plugin enables useful features like converting tabs to spaces and removing trailing spaces on save. This can be installed from the Eclipse Marketplace (Help → Eclipse MarketPlace…) by searching for AnyEditTools.

Command line

To clone using git on the command line, run:

git clone <url>

where <url> is one of the URLs from above. It is strongly recommended that all modules be installed into the same directory, and that this is done in a virtual environment. Please see these instructions for more details.


For each repository:

  1. Go to VCS → Checkout from Version Control → github
  2. In “Git Repository URL” enter the repository URL.
  3. Click Clone.


You will also need to set up the dependencies between projects.

This is done as follows:

  1. Go to File → Settings → Project:
  2. Select Project Dependencies
  3. Select the module and then tick the appropriate dependencies


For each repository:

  1. Go to File → Import → Git → Projects from Git → Clone URI
  2. In “URI” enter the repository URI.
  3. Click Finish
  4. Once the repository is imported:
    1. If the project is a Python project, right click and select “PyDev” → “Set as PyDev Project”.
    2. If the project is a C project:
      1. Select “File” → “New” → “Other…”
      2. Select “C/C++” → “Convert to a C/C++ Project (Adds C Nature)” and click on “Next”
      3. Select the project from the list.
      4. Select the “C Project” radio button.
      5. Select “Executable” and the “Cross GCC” from the list.
      6. Click on “Finish”.
    3. If the project is a Python and C project:
      1. Right click and select “PyDev” → “Set as PyDev Project”.
      2. Select “File” → “New” → “Other…”
      3. Select “C/C++” → “C Project” and click on “Next”.
      4. Enter the name of the project followed by _c_code.
      5. Uncheck “use default location”, click on “Browse” and find the subfolder of the project containing the C code (e.g. sPyNNaker has a neural_modelling subfolder).
      6. Select “Exectuable” → “Empty Project” and “Cross GCC” and click on “Next”.
      7. Select “Next” again.
      8. Set the “Cross Compiler Prefix” to arm-none-eabi-
      9. Set the path of the compiler to wherever you installed it (on Windows using MinGW/MSYS installed to the C:\ folder, this is C:\Program Files (x86)\GNU Tools ARM Embedded\4.8 2013q4\bin).
      10. Click on “Finish”.


You will also need to set up the dependencies between projects.

In each Python project, this is done as follows:

  1. Right-click on the project
  2. Select “Properties”
  3. Select “Project References”.
  4. Tick the appropriate dependencies for each module.

In a C project, this is done as follows:

  1. Right-click on the project
  2. Select “Properties”
  3. Select “C/C++ Build” → “Settings”
  4. In the “Tools Settings” tab, select “Cross GCC Compiler” → “Includes”
  5. Click on the “Add” icon.
  6. Add the dependency as ${workspace_loc:<dependency_path>} where <dependency_path> is the appropriate dependency.
  7. Repeat for all the dependencies.

Python Dependencies

Module Dependencies
SpiNNMachine SpiNNUtils
SpiNNMan SpiNNUtils, SpiNNMachine
PACMAN SpiNNUtils, SpiNNMachine
SpiNNFrontEndCommon SpiNNUtils, SpiNNMachine, SpiNNMan, PACMAN, spalloc
SpiNNakerGraphFrontEnd SpiNNUtils, SpiNNMachine, SpiNNMan, PACMAN, SpiNNFrontEndCommon, spalloc
sPyNNaker SpiNNUtils, SpiNNMachine, SpiNNMan, PACMAN, SpiNNFrontEndCommon, spalloc
sPyNNaker8NewModelTemplate SpiNNUtils, SpiNNMachine, SpiNNMan, PACMAN, SpiNNFrontEndCommon, sPyNNaker, spalloc
PyNN8Examples SpiNNUtils, SpiNNMachine, SpiNNMan, PACMAN, SpiNNFrontEndCommon, sPyNNaker, spalloc
sPyNNakerVisualisers SpiNNUtils, SpiNNMachine, SpiNNMan, PACMAN, SpiNNFrontEndCommon, spalloc
IntroLab SpiNNUtils, SpiNNMachine, SpiNNMan, PACMAN, SpiNNFrontEndCommon, SpiNNakerGraphFrontEnd, sPyNNaker, spalloc
SpiNNGym SpiNNUtils, SpiNNMachine, SpiNNMan, PACMAN, SpiNNFrontEndCommon, sPyNNaker, spalloc
SpiNNaker_PDP2 SpiNNUtils, SpiNNMachine, SpiNNMan, PACMAN, SpiNNFrontEndCommon, SpiNNakerGraphFrontEnd, spalloc
MarkovChainMonteCarlo SpiNNUtils, SpiNNMachine, SpiNNMan, PACMAN, SpiNNFrontEndCommon, SpiNNakerGraphFrontEnd, spalloc

C Dependencies

Note that include files are generally installed into spinnaker_tools/include, thus even when a C module is dependent on another library, you only need to add this location. The C code in sPyNNaker is an exception as some of the headers are dynamically included during the build, and so it is not possible to provide a pre-built library for sPyNNaker neural modelling.

Module Folder Include Dependencies
spinn_common spinnaker_tools/include
SpiNNFrontEndCommon/c_common spinnaker_tools/include
SpiNNakerGraphFrontEnd/spinnaker_graph_front_end/examples spinnaker_tools/include
sPyNNaker/neural_modelling spinnaker_tools/include
sPyNNaker8NewModelTemplate/c_models spinnaker_tools/include, sPyNNaker/neural_modelling/src
SpiNNGym/c_code spinnaker_tools/include
SpiNNaker_PDP2/c_code spinnaker_tools/include
MarkovChainMonteCarlo/c_models spinnaker_tools/include

Installing Python Modules

Installing the Python modules in developer mode allows you to use the modules from the command line. Note that the IDEs allow you to run code directly within the IDE, and so this step is optional if you have installed an IDE. Even when using an IDE, it can be useful to install the modules to avoid issues with the install.

For each of the python modules, go into the root directory of the module and run:

[sudo] pip install -e .[Test][--user]

Where sudo is required if you are on Linux or OS X and would like to install the dependencies as root (on windows you would need to open a console as Administrator); and --user is required if you would like to install the modules under your user. Neither are required if you are using a virtualenv.

[Test] including the square brackets is optional but will install the extra requirements to run unittests.

This step can be performed for every Python repository you have — assuming you have put them all into the same location — by using the or scripts in the SupportScripts repository.

Set up the C environment variables

  1. Create an environment variable SPINN_DIRS that points at the location of the cloned spinnaker_tools folder (note that in Windows, this should be the MinGW Posix path e.g. if you have extracted the archive to C:\SpiNNaker-Tools\, you should set the environment variable to /c/SpiNNaker-Tools).
  2. Add the spinnaker_tools/tools folder to your PATH environment variable. This does not need to be a POSIX path on Windows e.g. C:\spinnaker_tools\tools is fine on Windows, or /spinnaker_tools/tools on Linux or Mac.
  3. Add the spinnaker_tools/tools folder to your PERL5LIB environment variable (or create this environment variable if it is not already set; note that in Windows, this should be the MinGW Posix path e.g. if you have extracted the archive to C:\spinnaker_tools\, you should set the environment variable to /c/spinnaker_tools/tools).
  4. Create a new environment variable NEURAL_MODELLING_DIRS which is set to the path of the neural_modelling subfolder of the extracted archive (note that in Windows, this should be the MinGW Posix path e.g. if you have extracted the archive to C:\sPyNNaker\, you should set the environment variable to /c/sPyNNaker/neural_modelling).

Build the C Code

The C code to compile is (in order) as follows:

Module Sub Folder Commands Clean Command
spinnaker_tools   make make clean
spinn_common   make
make install
make clean
SpiNNFrontEndCommon c_common make
make install
make clean
sPyNNaker neural_modelling make make clean
SpiNNakerGraphFrontEnd spinnaker_graph_front_end/examples make make clean

A script is also available here, or in the SupportScripts repository called which performs the appropriate steps for you. Note that it will clean and build everything every time it is run; this may take some time depending on your machine. Note also that this assumes that you have checked out the git code into a single location, and that you have installed and setup the Python modules already (as described in the previous step). If you haven’t done so then this step is likely to fail.

If you have also downloaded the repository for building new neuron models, or any of the optional repositories described earlier, then their C code is compiled using the following commands:

Module Sub Folder Commands Clean Command
sPyNNaker8NewModelTemplate c_models make make clean
SpiNNGym c_code make make clean
SpiNNaker_PDP2 c_code make make clean
MarkovChainMonteCarlo c_models make make clean

These compilations are included in the automatic make script if you have cloned the repositories into the same location as the “central” repositories.



When SpyNNaker is first called, if a configuration file is not found, it will create one in your home directory and exit. It is possible to ask SpyNNaker to do this before you run your first simulation as follows:

python -c "import pyNN.spiNNaker"

If you do not already have one, a new file called “.spynnaker.cfg” will be created in your home directory. You must edit this file to ensure that SpyNNaker can access your SpiNNaker machine. Upon opening this file, the part to alter will look like the following:

machineName = None
version = None

Also, make sure you turn on extraction of iobuf when working with the C code at all. Without this, you will be unable to read anything that your code writes to the logs.

extract_iobuf = True

There are plenty of other configuration options that you may wish to edit too; please look at the default configuration files in spynnaker/pyNN/spynnaker.cfg, spinn_front_end_common/interface/spinnaker.cfg and spinnaker_graph_front_end/spiNNakerGraphFrontEnd.cfg for more information.

[Note: if you are running using SpiNNakerGraphFrontEnd then the file in your home directory you need to edit will be called “.spiNNakerGraphFrontEnd.cfg”.]

If you have a SpiNNaker board, then go to Local Board. If you do not have a SpiNNaker board, please follow the instructions in Instructions on how to use the different front ends in virtual mode and then go to Running some examples.

Local Board

Within the file, you should set machineName to the IP address or hostname of your SpiNNaker machine, and version to the version of your SpiNNaker board; this will almost certainly be “3” for a 4-chip board or “5” on a 48-chip board.

The default IP address for a spinn-3 board is and the default IP address for a spinn-5 board is

TODO: Does there need to be anything in here about using and spalloc_user, with machineName and version set to None?

Now go to Network Configuration.

Network Configuration

Go to the network settings for your computer and add or set an IPv4 entry with the following address for the adapter connected to the SpiNNaker board: 1. ip address = 2. sub-mask = 3. default gateway =

Java Tools

Optional but requires the steps in the Java Section.

Java is off by default so requires changing the values in the Java section of the config file. Copy and change the ones required from spinn_front_end_common\interface\spinnaker.cfg

Running some examples

  • Go to the “examples” folder in Pynn8Examples
  • Run:
  • You will see the system go through a series of processes from partitioning, to placement, to routing and finally to loading and running.
  • Once the example has finished, you should see a graph that will look something like this:


If you get the output above, you have successfully installed your system.

Moving away from sPynnaker8

This section only applies if you have previously used sPyNNaker while we were using the sPyNNaker8 repository.

All sPyNNaker8 code has been merged into sPyNNaker.

  • Run
  • Replace any import of just spynnaker8 to spynnaker import spynnaker8 as …. becomes import spynnaker as …

  • Replace all other spynnaker8 imports with spynnaker.pyNN import spynnaker8.XYZ … becomes import spynnaker.pyNN.XYZ ….

The integration tests have been moved from sPyNNaker8/p8_integration_tests to sPyNNaker/spynnaker_integration_tests

Note: In the near future the PyNN8Examples and sPyNNaker8NewModelTemplate repositories and directories will be renamed to remove the 8.