Hop is a key/value store designed to meet the requirements of systems software and applications at exascale. Most key/value stores, and generally storage systems are designed as monolithic systems that provide certain range of functionality. Hop is designed as set of building blocks that can be assembled and extended based on the particular requirements for each application that uses it. This approach allows Hop to provide more flexible balance between scalability, consistency, reliability and performance than the existing storage systems. Hop allows per-key consistency and reliability configurations. Hop allows groups of users/ranks to create consistency domains that ensure consistency within the group while relaxing the requirements (and improving the performance) for consistency for clients outside of the group. Hop also uses a novel approach of using different key names to access the same data in different ways/formats. A paper describing the initial work on Hop was published at ISC 2015.
This software has been approved for open source release and has been assigned LA-CC-16-9.
Copyright (c) 2015, Los Alamos National Security, LLC All rights reserved.
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