A method is disclosed that includes computing, using at least one uniformly fine-grain data parallel computing unit, a mean-square error regression within a regression clustering algorithm. The process comprises, mixing low sulphate concentrated feed bittern of density 31. Upon successful authentication of the first authentication component, proper state information of the authentication process is stored by the client indicating the next authentication component. The request from the PCRF includes a service indicator for the initial data service. Chalcogenide material may be formed over heater material.