Steven M. Carter

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High-performance file systems that span across supercomputers and storage systems are becoming increasingly important, as these resources are being dispersed both within the enterprise and across the wide-area. Infiniband transport has been proposed as a candidate to provide high-performance access over interconnects primarily within an enterprise. In this(More)
— UltraScienceNet is an experimental wide-area network testbed to enable the development of networking technologies required for the next-generation large-scale scientific applications. It provides on-demand, dedicated, high bandwidth channels for large data transfers, and also high resolution, high-precision channels for fine control operations. In the(More)
A control-plane architecture for supporting advance reservation of dedicated bandwidth channels on a switched network infrastructure is described including the front-end web interface, user and token management scheme, bandwidth scheduler, and signaling daemon. A path computation algorithm for bandwidth scheduling is proposed based on an extension of(More)
We describe experimental results on large data transfers and stable control streams over a dedicated 1Gbps channel of several hundred miles length implemented over ORNL-Atlanta production OC192 link. To support file transfers at 1Gbps rates, the end hosts are equipped with SCSI hard drives in a RAID 0 configuration and dedicated NICs, which are directly(More)
The high-performance networking requirements for next generation large-scale applications belong to two broad classes: a) high bandwidths, typically multiples of 10Gbps, to support bulk data transfers, and b) stable bandwidths, typically at much lower bandwidths, to support computational steering, remote visualization, and remote control of instrumentation.(More)
BACKGROUND Chronic heart failure (CHF) patients with elevated depression symptoms are at greater risk of morbidity and mortality. The mechanisms linking symptoms of depression with disease progression in CHF are unclear. However, research studies have found evidence of alterations in immune activity associated with depression symptoms that may influence(More)
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