GNU parallel is a shell tool for executing jobs in parallel locally or using remote computers. A job is typically a single command or a small script that has to be run for each of the lines in the input. The typical input is a list of files, a list of hosts, a list of users, a list of URLs, or a list of tables. If you use xargs today you will find GNU parallel very easy to use, as GNU parallel is written to have the same options as xargs. If you write loops in shell, you will find GNU parallel may be able to replace most of the loops and make them run faster by running several jobs in parallel. GNU parallel makes sure output from the commands is the same output as you would get had you run the commands sequentially. This makes it possible to use output from GNU parallel as input for other programs.
jrMandel is a command line, parallel Mandelbrot set fractal renderer. It is specially designed to render high-resolution fractal images taking advantage of parallel processing, either by using multiple threads of execution (and thus suitable to run on multi-core processors) or by using a Parallel Virtual Machine (PVM) to distribute the tasks among the nodes of a computer cluster. jrMandel can also render fractals without using any parallelism, in order to compare the efficiency between parallel and non-parallel runs.
Tahoe-LAFS (Least Authority File System) is a decentralized data store. It distributes your filesystem across multiple servers, and even if some of the servers fail or are taken over by an attacker, the entire filesystem continues to work correctly and to preserve your privacy and security.
JumboMem gives unmodified binaries transparent access to memory spread across multiple computers. The goal is to improve the performance of memory-hungry applications by replacing accesses to a slow paging device (a disk) with accesses to fast RAM located across a high-speed network. Unlike other memory servers, JumboMem does not need administrator privileges either to install or run.
Proto Balance is a load balancing and traffic management system that can handle up to 10,000 concurrent connections and 20,000 downloads per second. Proto Balance is a load balancer and TCP traffic port forwarder for high availability. It features an easy-to-use Web interface that requires minimal knowledge of networking and no command-line experience. Its target audience includes enterprise cluster providers, Internet service providers, and network administrators.
jobqueue is a fault tolerant program for executing jobs in parallel to complete all jobs as quickly as possible. It can be used to distribute a set of jobs to a specific number of processors and/or machines. New jobs are started as older jobs finish. Failed jobs can be automatically restarted. Jobs can be automatically migrated away from failed nodes.
STL-MPI is an extension to MPI to support easy transfer of STL objects. It allows tight integration of MPI with objects from the C++ Standard Template Library, assisting the development of efficient parallel programs using message-passing in C++. STL-MPI provides a transparent and unified mechanism in C++ to transmit STL containers in an object-oriented and type-safe manner. It supports nested containers for data transport.
PMS/PyPubSub (short for Python Message Service / Python based Publish Subscribe) is a framework for implementing a publish subscribe mechanism into a Python application. A python process somewhere in the network publishes one or more topics which consist of Python objects. Multiple processes in the network can subscribe to fresh updates of the published topics. A publisher and its subsribers are fully decoupled. The datatype of a topic can be freely defined and changed at runtime. New publishers and subscribers can easily be added at runtime.