HPCC stands for High-Performance Computing Cluster. It is also known as Data Analytics Supercomputer (DAS), an open source, data-intensive computing system platform developed by LexisNexis Risk Solutions. The HPCC platform incorporates a software architecture implemented on computing clusters to provide high-performance, data-parallel processing design for various applications using big data. The HPCC platform includes system configurations to support both parallel batch data processing (Thor) and high-performance online query applications using indexed data files (Roxie). The HPCC platform also includes a data-centric declarative programming language for parallel data processing called ECL.
You can see a simple example ...