CHAOS (Clustered High Availability Operating System) is a Linux distribution produced within the Livermore Computing center at the Lawrence Livermore National Laboratory. It augments the standard Red Hat Enterprise Linux distribution with kernel modifications and user-space tools to support HPC (high-performance computing) clustering. This means that it helps to bring multiple computers together to run as one; numerously increasing the power of an everyday computer. [1] It is used on Linux clusters within the Livermore Computing center. [2]