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efficient File Data Transfer application (FDT) to transfer files over a high capacity network such

as UltraLight.

UltraLight Demonstrations:

In each of the years from 2004-2006, a team led by Caltech has entered the SuperComputing

"Bandwidth Challenge" competition, and used the UltraLight network testbed to significantly

outpace the other entrants in amount of data transferred during a fixed time window. For the first

time since the UltraLight collaboration was formed we choose not to compete in the bandwidth

challenge for 2007 because the challenge had diverged from our focus in UltraLight. Instead we

choose to demonstrate how quickly we could move data "disk-to-disk" across a high-performance

infrastructure. Again in 2007, significant advances were made possible in part through the use of

the UltraLight kernel and the Fast Data Transfer (FDT) tool. We achieved over 80 Gbps sustained

transfers to/from the Caltech booth, reaching a peak of 88 Gbps. This success represents an

excellent foundation for the next critical year when the LHC begins operations.

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