1. A computer-implemented method of organizing one or more data structures in physical storage media for efficient access by a parallel processing architecture, the method being implemented in a computer system that includes a physical processor and physical storage media, the method comprising: determining the number of pre-synaptic connections for individual ones of a set of neurons, the set of neurons being connected through a set of connections, wherein the set of neurons includes a first neuron and a second neuron; grouping, by the physical processor, individual ones of a set of neurons together in a set of groups based on the determined number of pre-synaptic connections per neuron such that individual ones of the set of groups include neurons having the same number of re-synaptic connections, wherein the set of groups includes a first group and a second group, wherein the first group includes the first neuron and the second neuron; and processing the set of neurons by evaluating connections in parallel per group such that a first connection of the first neuron is evaluated in parallel with the first connection of the second neuron.