OpenHPC is a community-driven software distribution and infrastructure framework for High Performance Computing (HPC) clusters. It provides a collection of RPM packages, installation recipes, and testing infrastructure to deploy and manage HPC environments on Linux distributions such as RHEL, SUSE, and openEuler. The repository serves as the build system and validation suite for the distribution, ensuring compatibility across multiple MPI implementations, compilers, and scientific libraries. It does not function as a single application but rather as a meta-package and deployment framework for HPC systems.
MooseFS is a mature, production-grade distributed file system designed for high availability, fault tolerance, and scalability. Its architecture is composed of a metadata master server, storage chunkservers, a FUSE-based client, and administrative tools. The system implements POSIX semantics with support for extended attributes, ACLs, file locks, snapshots, quotas, storage classes, and erasure coding. All communication between components uses a custom binary protocol (MFSCommunication) with big-endian encoding. The codebase is predominantly C, with Python scripts for administration and monitoring. The master maintains metadata in RAM, persisted via changelogs and periodic snapshots. Chunk replication is configurable via goals and label-based topology. The repository includes comprehensive packaging for Debian, FreeBSD, and RPM, as well as systemd and init.d service files. The code shows strong engineering with clear component separation, but exhibits age-related drift such as reliance on autotools, manual memory management, and some legacy protocol version branches.