Connectionists: Which simulators support structural dynamics?

[Fred Rothganger]

The NEST simulator documents the capability to create/destroy synapses 
at runtime 
(http://www.nest-simulator.org/py_sample/structural-plasticity-example). 
Which other simulators support a similar capability?

For clarity, let's define "structural plasticity" as the ability to add 
and remove synapses and neurons while the simulation is actively 
running. Full support would include doing this on an HPC system 
(multiple compute nodes) and automatically rebalancing the load.

Several forms of partial support are possible, including:
* Only the ability to add/remove synapses, but not neurons.
* Limitation to a single compute node or thread.
* Pre-allocating an oversized model, some elements of which are kept 
idle until needed.

-- Fred

Fred Rothganger
Neural Computing Department
Sandia National Laboratories