### 10 TFLOPS Finite Element Solver on the Earth Simulator: GeoFEM

**Hiroshi Okuda, University of Tokyo, Japan**

GeoFEM (http://geofem.tokyo.rist.or.jp)
has been developed as a finite element solid earth simulator using the Earth
Simulator (ES) (35.61 Tflops/Linpack). It is composed of a platform and
some pluggable 'analysis modules' for structural, electromagnetic thermal
fluid, and wave propagation simulations. The platform includes three parts:
parallel I/O interface, iterative equation solvers and visualizers. Parallel
solvers have got very high performance on the ES. When using up to 512 nodes
of the ES, the computational speed of the static linear analysis by the
optimized ICCG solver, has reached 10.4 TFLOPS (31.8% of peak performance
of 512 nodes). Parallel visualizer can provide many visualization methods
for analysis modules covering scalar, vector and tensor datasets, and have
been optimized in parallel performance. The analysis modules have also been
vectorized and parallelized suitably for the ES and coupled on memory with
the parallel visualizer.