The use of accelerator hardware for micromagnetics simulations is described, along with some initial results. The accelerator calculates the dipole interactions at 400 gigaflops, allowing large simulations to be performed with arbitrary geometries. Two research programs are highlighted, the simulation of a curved MRAM cell and the simulation of the write head in a computer disk drive. ThE paper discusses some of the research done at IBM using MDGRAPE-2 for micromagnetics. The computer consists of an IBM parallel AIX machine with eight MDGRAPE-2 boards attached to the PCI buses of separate nodes.
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