double wide rack mount,, heavy duty stuff..
petaFLOPS , on any ‘puter is pretty impressive..
US Commissions Beefy IBM Supercomputer
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Mira will have more than 750,000 IBM PowerPC A2 1.6 Ghz, 16-way SMP (symmetric multiprocessing) A2 processors. Each compute node will have a single processor, and they will be housed in racks of 1,024. Each compute rack will also have from eight to 128 I/O nodes -- also running the A2 processor -- that will be dedicated to moving data on and off the compute nodes.
Each node will have either 8 or 16 gigabytes of memory, aggregating to 750 terabytes of memory across the entire system. Communications among the nodes will go over IBM 5D Torus interconnects, capable of 40 gigabits-per-second throughput.
For an operating system, the compute nodes will run a Compute Node Lightweight open-source scalable kernel, and the I/O nodes and the front-end and service nodes will run a modified version of Red Hat Enterprise Linux. The system will be mostly water-cooled and consume an average of 60 kilowatts per rack.
IBM did not reveal the price for Mira, though it did say Argonne had purchased it with funds from a US$180 million grant.