to this, the Grid Engine community started the Open Grid Scheduler project to continue to develop and maintain a free implementation of Grid Engine. On January 18, 2011, it was announced that Univa had recruited several principal engineers from the former Sun Grid Engine team and that Univa would be developing their own forked version of Grid Engine. The newly announced Univa Grid Engine did include commercial support and would compete with the official version of Oracle Grid Engine. On Oct 22, 2013 Univa has announced that it had acquired the intellectual property and trademarks pertaining to the Grid Engine technology and that Univa will take over support for Oracle Grid Engine customers. In September 2020, Altair Engineering, a global technology company providing solutions in data analytics, product development, and high-performance computing (HPC) acquired Univa. Cluster architecture A typical Grid Engine cluster consists of a master host and one or more execution hosts. Multiple shadow masters can also be configured as hot spares, which take over the role of the master when the original master host crashes. Support and training Univa is providing commercial support and training for Univa Grid Engine and Oracle Grid Engine. Below is a description of some of the historic options. Sun provided support contracts for the commercial version of Grid Engine on most UNIX platforms and Windows. Professional services, consulting, training, and support were provided by Sun Partners. Sun partners with Georgetown University to deliver Grid Engine administration classes. The Bioteam runs short SGE training workshops that are 1 or 2 days long. Users obtained community support on the Grid Engine mailing lists. Grid Engine Workshops were held in 2002, 2003, 2007, 2009, and 2012 in Regensburg, Germany. Other Grid Engine based products The below contains historic information and some of the products and solutions are no longer available: Sun Constellation System Sun Visualization System Sun Compute Cluster ClusterVisionOS Distribution Rocks Cluster Distribution Univa's UniCluster Express Univa Grid Engine Some Grid Engine active free fork of Sge with "some" further modifications, Michigan Neuroscience Institute, University of Michigan (2021). Son of Grid Engine inactive free fork of Sge with some enhancements, University of Liverpool, default Uubuntu/CentOS/RHEL gridengine package (2021). BioTeam's iNquiry Nimbus uses Grid Engine as a virtual machine scheduler in a cloud computing environment See also Sun Ops Center - Sun's datacenter automation tool Open Grid Forum References Sun Microsystems software Job scheduling Parallel computing