We have made public an Amazon EC2 machine image that can be used to run Sequential and Parallel jobs on the cloud resources provided by Amazon EC2. With just 6 commands you could run your scripts remotely on a cluster of one to a few hundred nodes and all it would cost you is some of your free allocation or as little as $0.01 an hour per node. See here for details and here is a 5 minute video. Version 2.4.6 of the OpenSees binary is now available for download. Here is the change log. We are conducting a survey to identify problems ans shortcoming associated with OpenSees. Please help by filling out the survey. NEES and PEER hosted this years two day event on September 25-26 at the Richmond field Station, UC Berkeley. The presentations are now available online and can be found here OpenSees is a software framework for developing applications to simulate the performance of structural and geotechnical systems subjected to earthquakes. A number of OpenSees applications are released on this website. Here is a short video.

The goal of the OpenSees development is to improve the modeling and computational simulation in earthquake engineering through open-source development.

OpenSees is under continual development, so users and developers should expect changes and updates on a regular basis. In this sense, all users are developers so it is important to register. More information on Open Source is available.

The development of OpenSees is sponsored by the Pacific Earthquake Engineering Research Center

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