Stephen C. Simms

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As part of the SCinet Research Sandbox at the Supercomputing 2011 conference, Indiana University (IU) demonstrated use of the Lustre high performance parallel file system over a dedicated 100 Gbps wide area network (WAN) spanning more than 3,500 km (2,175 mi). This demonstration functioned as a proof of concept and provided an opportunity to study Lustre's(More)
The Grid2003 Project has deployed a multivirtual organization, application-driven grid laboratory ("Grid3") that has sustained for several months the production-level services required by physics experiments of the Large Hadron Collider at CERN (ATLAS and CMS), the Sloan Digital Sky Survey project, the gravitational wave search experiment LIGO, the BTeV(More)
— Today's scientific applications demand computational resources that can be provided only by parallel clusters of computers. Storage subsystems have responded to the increased demand for high-throughput disk access by moving to network attached storage. Emerging Cyber-infrastructure strategies are leading to geographically distributed computing resources(More)
Cyberinfrastructure is a word commonly used but lacking a single, precise definition. One recognizes intuitively the analogy with <i>infrastructure</i>, and the use of <i>cyber</i> to refer to thinking or computing -- but what exactly is cyberinfrastructure as opposed to information technology infrastructure? Indiana University has developed one of the more(More)
Summary form only given. As the first geographically distributed supercomputer on the top 500 list, the AVIDD facility of Indiana University ranked 50/sup th/ in June of 2003. It achieved 1.169 tera-flops running the LINPACK benchmark. Here, our work of improving LINPACK performance is reported, and the impact of math kernel, LINPACK problem size and(More)
The Indiana University Data Capacitor is a 535 TB distributed parallel filesystem constructed for short to mid term storage of large research data sets. Spanning multiple, geographically distributed compute, storage, and visualization resources and showing unprecedented performance across the wide area network, the Data Capacitor's Lustre filesystem can be(More)
As part of the SCinet Research Sandbox at the 2011 International Conference for High Performance Computing, Networking, Storage and Analysis (SC11), Indiana University utilized a dedicated 100 Gbps wide area network (WAN) link spanning more than 3,500 km (2,175 mi) to demonstrate the capabilities of the Lustre high performance parallel file system in a high(More)
Supercomputers were once regarded as being of very limited use - of interest to a very few national centers and used by a small fraction of researchers at any given university. As scientific research becomes more and more dependent upon management and analysis of massive amounts of data, advances in human knowledge will become increasingly dependent upon(More)
Indiana University provides powerful compute, storage, and network resources to a diverse local and national research community every day. IU's facilities have been used to support data-intensive applications ranging from digital humanities to computational biology.For this year's bandwidth challenge, several IU researchers will conduct experiments from the(More)