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Quantum Chromodynamics (QCD) describes how quarks and gluons interact via the strong force and predicts in principle the masses of their bound states, known as hadrons. Such predictions are beyond the reach of the traditional perturbative methods of quantum field theory and can only be done by the numerical simulation of QCD on a lattice of space-time points ("Lattice QCD"). Substantial computing resources must be applied to these simulations.
Fermilab builds and operates large clusters of computers for lattice quantum chromodynamics, as part of the national computational infrastructure for lattice QCD project established by the Department of Energy. Fermilab is also a participant in a DOE SciDAC-2 program devoted to the improvement of software for lattice gauge computing.
Fermilab Lattice Portal | Cluster Status | Cluster Information | Cluster Performance
The Fermilab Computing Division operates four lattice clusters. These are a 128-node 2.8 GHz Pentium-4 Myrinet cluster, a 520-node 3.2 GHz Pentium 940 Infniband cluster, a 600-node dual-socket dual-core 2.0 GHz Opteron Infiniband cluster, and a 586-node dual-socket quad-core 2.1 GHz Opteron Infiniband cluster (to be expanded to 856 nodes in April 2009). At 6.894 TFlop/s, the 600-node Opteron cluster ranked number 95 on the 28th Top500 list published November, 2006. The design of these clusters required careful balancing of the processors, memory and I/O buses, and high performance network fabrics.
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last modified by D.J. Holmgren on Feb 27, 2009