How and where are GPUs used in scientific simulations? [closed]

Question

How and where are GPUs used in scientific simulations (esp. in astrophysics/cosmology)?

Answer 1

1. Take a look at NVIDIA CUDA showcase. First two applications mentioned are astronomy/astrophysics.
2. Astrophysics tag on GPGPU.org

Answer 2

It's quite a new field, but I've seen an application in astrophysics once.

Generally GPUs can be used for parallelizable calculations (per pixel or per event), with simple C-compatible (not object oriented) routines, e.g. fourier trafo, histograms, etc