Other application users/developers:
It is used by more than 300 sites in academia and industry. See the latest download map below, as of April 2013.
Acoustic, elastic, viscoelastic, poroelastic wave propagation: seismic waves, earthquakes, non-destructive testing, ocean acoustics.
SPECFEM3D uses the continuous Galerkin spectral-element method to simulate acoustic (fluid), elastic (solid), coupled acoustic/elastic, poroelastic or seismic wave propagation in any type of conforming mesh of hexahedra (structured or not). It can for instance model seismic waves propagating in sedimentary basins or any other regional geological model following earthquakes; the whole Earth can also be simulated. It can also be used for non destructive testing or for ocean acoustics.
Up to 693,600 cores on IBM BlueWaters, sustained petaflop/s reached in February 2013.