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Background Worldwide, over 14% of individuals hospitalized for psychiatric reasons have readmissions to hospitals within 30 days after discharge. Predicting patients at risk and leveraging accelerated interventions can reduce the rates of early readmission, a negative clinical outcome (i.e., a treatment failure) that affects the quality of life of patient. To implement individualized interventions,...
As grid computing becomes more commonplace, so does the importance of coscheduling these geographically distributed resources. Negotiating resource management and scheduling decisions for these resources is similar to making travel arrangements: guesses are made and then remade or confirmed depending on the availability of resources. This “Travel Agent Method” serves as the basis for a production...
The TeraGrid is a closely linked community of diverse resources: computational, data, and experimental, e.g., the imminent very large computational system at the University of Texas, the extensive data facilities at SDSC, and the physics experiments at ORNL. As research efforts become more extensive in scope, the co-scheduling of multiple resources becomes an essential part of scientific progress...
As personalized medicine becomes more integrated into healthcare, the rate at which human genomes are being sequenced is rising quickly together with a concomitant acceleration in compute and storage requirements. To achieve the most effective solution for genomic workloads without re-architecting the industry-standard software, we performed a rigorous analysis of usage statistics, benchmarks and...
High performance computing resources attract a wide range of computational users and corresponding job widths and lengths. For example, on the petaflop Cray XT5 machine, Kraken, users submit jobs ranging from a few hundred cores (capacity computing) to over hundred thousand cores (capability computing). Traditionally it has been difficult to maintain high utilization while juggling such a diverse...
While methods of securing communication over the Internet have changed from clear text to secure encrypted channels over the last decade, the basic username-password combination for authentication has remained the mainstay in academic research computing and grid environments. Security incidents affecting grids, such as the TeraGrid stakkato incident of 2004 and 2005, has demonstrated that the use...
In late 2009, the National Institute for Computational Sciences placed in production the world's fastest academic supercomputer (third overall), a Cray XT5 named Kraken, with almost 100,000 compute cores and a peak speed in excess of one Petaflop. Delivering over 50% of the total cycles available to the National Science Foundation users via the TeraGrid, Kraken has two missions that have historically...
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