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

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Presentation transcript:

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

Trabecular Bone Cortical bone Trabecular bone 5-mm Cube

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

Vertebral Body With Shell 80 µm w/ 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

ParMetis partitions

Computational Architecture FE Mesh Input 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 Silo DB Olympus METIS Prometheus METIS METIS METIS Visit ParMetis PETSc

131K dof / proc .47 Teraflops - 4088 processors