1. A data-intensive computer comprising: a processing sub-system formed by a plurality of processing node servers; a database sub-system formed by a plurality of database servers configured to form a collective database in excess of a petabyte of storage; an operating system sub-system formed by a plurality of operating system servers configured to extend a unifying operating system environment across the processing sub-system, the database sub-system, and the operating system subsystem to coordinate operation of the plurality of processing node servers, the plurality of database servers, and the plurality of operating system servers to act as components in a single data-intensive computer; and wherein the operating system sub-system is configured to coordinate execution of a single application as distributed processes having at least one of the distributed processes executed on the processing sub-system and at least one of the distributed processes executed on the database sub-system.