Virginia Polytechnic Institute and State University will build an InfiniBand cluster using Apple Computer 's new dual-processor Power Mac computer with the 64-bit G5 processor. When it is completed, the cluster of 1,100 nodes is expected to rank among the most powerful in the world, Virginia Tech said. The Apple cluster will reside within Virginia Tech's Computing Centre and the university's Institute for Critical Technology and Applied Science will use it, Virginia Tech said. Mellanox Technologies supplied the I/O fabric, drivers, cards and switches for the cluster, Cisco Systems provided the Gigabit Ethernet switches, and Liebert, a division of Emerson Electric , supplied the cooling system. Shipments of dual-processor Power Macs to regular customers were supposed to start in August, but many users have reported on Apple enthusiast sites that their shipments have been delayed. Apple says the new Power Macs currently are shipping, and the company is increasing shipments of the dual-processor model to production volumes over the next two weeks.