It is with great pleasure that I announce the openais project. The openais project implements a production quality BSD licensed implementation of the SA Forum's Application Interface Specificaton for high availability compute clusters. The target operating system is Linux.

The openais project is the first published AIS implementation to provide strong membership guarantees in the AIS cluster membership API. Another first is the first published implementation anywhere of the AIS availability management framework API. Finally the implementation includes the first published AIS checkpointing API to achieve ~70% network-wire-speed with one node checkpoint writing eight replicas.

The openais project is the first published AIS implementation to use cutting edge research in the virtual synchrony group messaging model. Virtual synchrony provides several benefits such as using standard UDP/IP, utilization of available hardware multicast, and avoiding two-phase commit protocols. The major advantage of this model is performance: the checkpoint service can checkpoint 8.8 mb/sec of data on a 100 mbit network to two replicas and 6.3 mb/sec of data to twelve replicas. Another significant advantage of this technology is 100% correct operation during faults, partitions, and merges.

Please join us in evaluating and contributing to the openais project. With your help, we can join together to develop a world-class implementation of SA Forum's Application Interface Specification.

The quickstart documentation can be found:
http://developer.osdl.org/dev/openais/src/QUICKSTART

The main project page can be found:
http://developer.osdl.org/dev/openais

To subscribe to the mailing list, visit:
http://lists.osdl.org/mailman/listinfo/openais