According to one embodiment of the invention, a method for preparing files for storage in a server includes generating a profile for a selected file. The circuit includes a differential amplifier, a transistor having a gate that is coupled to the output of the differential amplifier, a comparator, and a sense resistor that is coupled between the drain of the transistor and the input pin. The resource manager associates application threads of a software application executing on a data processing device with local processors. The structure improves the gamma ray energy resolution response while at the same time serving as a gamma ray directional collimator.