A junction box for electrical wiring includes one or more wiring connectors non-removably pre-mounted to side panels thereof. By generating successive sets of weights relating to a performance surface using a variety of heuristic techniques, and then evaluating the weights using a piece-wise linear cost function, a number of performance minima can be found. An SOC is provided that includes a plurality of compute units and a power management controller to allocate portions of a power budget of the SOC to the plurality of compute units based on ratios of a performance level for each compute unit to a power consumed by the compute unit operating at the performance level. The intensity reducer prevents the tunable optical signal source from injecting high levels of noise into the channels during tuning of the tunable optical signal source. Accordingly, high-precision cutting is enabled by cutting wall along the cutting line.