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Mark F. Adams H.H. Bayraktar, T.M. Keaveny, P. Papadopoulos and Atul Gupta

Ultrascalable Implicit Finite Element Analyses in Solid Mechanics with over a Half a Billion Degrees of Freedom ( excerpts ). Mark F. Adams H.H. Bayraktar, T.M. Keaveny, P. Papadopoulos and Atul Gupta. Cortical bone. Trabecular bone. Trabecular Bone. 5-mm Cube. Methods: FE modeling.

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Mark F. Adams H.H. Bayraktar, T.M. Keaveny, P. Papadopoulos and Atul Gupta

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  1. Ultrascalable Implicit Finite Element Analyses in Solid Mechanics with over a Half a Billion Degrees of Freedom(excerpts) Mark F. Adams H.H. Bayraktar, T.M. Keaveny, P. Papadopoulos and Atul Gupta

  2. Cortical bone Trabecular bone Trabecular Bone 5-mm Cube

  3. Methods: FE modeling Mechanical Testing E, yield, ult, etc. 3D image FE mesh Micro-Computed Tomography CT @ 22 m resolution 2.5 mm cube 44 m elements

  4. 80 µm w/ shell Vertebral Body With Shell • Large deformation elast. • 6 load steps (3% strain) • Scaled speedup • ~131K dof/processor • 7 to 537 million dof • 4 to 292 nodes • IBM SP Power3 • 14 of 16 procs/node

  5. ParMetis partitions

  6. Computational Architecture Silo DB Silo DB Silo DB Silo DB FE MeshInput File ParMetis Athena Partition to SMPs FE input file(in memory) FE input file(in memory) • Athena: Parallel FE • ParMetis • Parallel Mesh Partitioner (Univerisity of Minnesota) • Prometheus • Multigrid Solver • FEAP • Serial general purpose FE application (University of California) • PETSc • Parallel numerical libraries (Argonne National Labs) ParMetis Athena Athena File File File File FEAP FEAP FEAP FEAP Material Card pFEAP Olympus METIS METIS METIS Prometheus METIS Visit ParMetis PETSc

  7. 131K dof / proc.47 Teraflops - 4088 processors

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