Computer simulation using particles by J.W Eastwood, R.W Hockney

Computer simulation using particles J.W Eastwood, R.W Hockney ebook
ISBN: 0852743920, 9780852743928
Format: djvu
Page: 543
Publisher: IOP

The Large Scale Parallel Simulation Performed on the K computer was Awarded the ACM Gordon Bell Prize 2012のページです。 The group performed extremely large simulations with an unprecedentedly high level of efficiency. The target of the award-winning simulation, presented at SC12, was the gravitational evolution of dark matter in the early Universe. Computer simulation using particles by J.W Eastwood, R.W Hockney. The number of dark matter particles simulated was two trillions, which is the world's largest dark matter simulation at present. Posted on June 7, 2013 by admin. Plato's Allegory of the Cave, Descartes' evil demon, Putnam's brain in a vat -- these are all variants of justifications for solipsism, a philosophical idea that says it's impossible to know with any certainty whether the world as we experience it is "real" or a simulation projected by some external entity. Technology Review explains that “the problem with all simulations is that the laws of physics, which appear continuous, have to be superimposed onto a discrete three dimensional lattice which advances in steps of time.” What that basically means is that by just being a simulation, the computer would put limits on, for instance, the energy that particles can have within the program. (Image courtesy Martin Savage of That allows researchers to examine what is called the strong force, one of the four fundamental forces of nature and the one that binds subatomic particles called quarks and gluons together into neutrons and protons at the core of atoms. Download Computer simulation using particles pdf. The flat (blue) surface illustrates the relationship between energy and momentum that would be expected if the universe is a simulation with an underlying cubic lattice. His suggestion was that our descendants, far in the future, would have the computer capacity to run simulations that complex, and that there might be millions of simulations, and millions of virtual universes with billions of simulated brains in them . If recent measurements of cosmic ray particles are correct, then we may have the first evidence that the universe as we know it is really a giant computer simulation. A present-day example is lattice quantum chromodynamics, which explores the effects of the strong nuclear force, one of the four fundamental forces in the universe, on tiny elementary particles such as quarks and gluons. The simulations use a vortex particle method to solve the Navier-Stokes equations, with a highly parallel fast multipole method (FMM) as numerical engine, and match the current record in mesh size for this application, a cube of 4096^3 computational points solved with a spectral method. Computer Science > Numerical Analysis achieving sustained performance of 1.08 petaflop/s on gpu hardware using single precision.