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Café com Física |
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02/06
10:30 hrs Sala 13 Michael Clark Harvard University Blasting through lattice QCD computations using GPUs Over the past
five years, graphics processing units (GPUs) have become a popular
platform for scientific computation. Lattice Quantum
Chromodynamics (QCD) is a non-perturbative formulation of QCD that is a
grand challenge problem requiring peta- or exa-scale computation for a
full solution. I describe the challenges of using GPUs for
lattice QCD calculations, and the algorithms and methods employed by
the QUDA library to overcome these. Of particular importance is
the reduction of memory traffic, even at the expense of increased
computation. With the appropriate reformulation,
inexpensiveclusters of GPUs can replace traditional massively parallel
supercomputers. 
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