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The RealityGrid project (http://www.realitygrid.org) aims both to enable the discovery of new materials through integrated experiments and to understand the behaviour of physical systems based on the properties of their microscopic components using diverse simulation methods spanning many time and length scales. A central theme of RealityGrid is the(More)
This paper outlines the benefits of computational steering for high performance computing applications. Lattice-Boltzmann mesoscale fluid simulations of binary and ternary amphiphilic fluids in two and three dimensions are used to illustrate the substantial improvements which computational steering offers in terms of resource efficiency and time to discover(More)
Modern processor technologies have driven new designs and implementations in main-memory hash joins. Recently, Intel Many Integrated Core (MIC) co-processors (commonly known as Xeon Phi) embrace emerging x86 single-chip many-core techniques. Compared with contemporary multi-core CPUs, Xeon Phi has quite di↵erent architectural features: wider SIMD(More)
We present a measurement of the velocity flow of the local universe relative to the CMB rest frame, based on the Jha, Riess & Kirshner (2007) sample of 133 low redshift type Ia supernovae. At a depth of 4500 km s −1 we find a dipole amplitude of 279 ± 68 km s −1 in the direction l = 285 • ± 18 • , b = −10 • ± 15 • , consistent with earlier measurements and(More)
We describe a grid-based method to dramatically accelerate from weeks to under 48 hours the calculation of differences in binding free energy and its application to Src homology 2 (SH2) protein cell signalling domains. The method of calculation, thermodynamic integration, is briefly outlined and we indicate how the calculation process works from the(More)
— Nowadays, researchers have performed extensive experiments to study the feasibility and Connectivity of vehicle access. We investigate connectivity in the ad hoc network formed between vehicles that move on a typical highway. We use the common model in vehicular traffic theory. Since a vehicle spends a large portion of the connection time in this poor(More)
This paper presents LogDiver, a tool for the analysis of application-level resiliency in extreme-scale computing systems. The tool has been implemented to handle data generated by system monitoring tools in Blue Waters, the petascale machine in production at the University of Illinois' National Center for Supercomputing Applications. The tool is able: i) to(More)