static_synapse_hpc - Variant of static_synapse with low memory
consumption.
hpc synapses store the target neuron in form of a 2 Byte index instead of
an 8 Byte pointer. This limits the number of thread local neurons to
65,536. No support for different receptor types. Otherwise identical to
static_synapse.
/usr/src/packages/BUILD/models/modelsmodule.cpp