An offset voltage temperature coefficient reduction system for a differential operational amplifier is disclosed. Logic is added to the device driver, which logic provides several enhancements to the MTU size changing operationprocess. A process for making the thermally stable chalcogenide glass includes purifying the components to remove oxides and scattering centers, batching the components in a preprocessed distillation ampoule, gettering oxygen impurities from the mixture, and heating the components to form a glass melt. This invention includes a cache coherence protocol for a sparse directory in combination with the multiprocessor nodes.