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High performance computing systems will need to operate with certain power budgets while maximizing performance in the exascale era. Such systems are built with power aware components, whose collective peak power may exceed the specified power budget. Cluster level power bounded computing addresses this power challenge by coordinating power among components within compute nodes and further adjusting...
Power is a major limiting factor for the future of HPC and the realization of exascale computing under a power budget. GPUs have now become a mainstream parallel computation device in HPC, and optimizing power usage on GPUs is critical to achieving future goals. GPU memory is seldom studied, especially for power usage. Nevertheless, memory accesses draw significant power and are critical to understanding...
Angular correlations between charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV for transverse momentum ranges within 0.5<pT,assoc<pT,trig<4 GeV/c. The correlations are measured over two units of pseudorapidity and full azimuthal angle in different intervals of event multiplicity, and expressed...
Abstract The ALICE experiment at the LHC has studied J/ψ production at mid-rapidity in pp collisions at TeV through its electron pair decay on a data sample corresponding to an integrated luminosity Lint = 5.6 nb−1. The fraction of J/ψ from the decay of long-lived beauty hadrons was determined for J/ψ candidates with transverse momentum pt> 1.3 GeV/c and rapidity |y| <...
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