SCHEDULE: NOV 10-16, 2012
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Forward and Adjoint Simulations of Seismic Wave Propagation on Emerging Large-Scale GPU Architectures
SESSION: Weather and Seismic Simulations
EVENT TYPE: Papers
TIME: 4:00PM - 4:30PM
SESSION CHAIR: Amik St-Cyr
AUTHOR(S):Max Rietmann, Peter Messmer, Tarje Nissen-Meyer, Daniel Peter, Piero Basini, Dimitri Komatitsch, Olaf Schenk, Jeroen Tromp, Lapo Boschi, Domenico Giardini
ROOM:355-EF
ABSTRACT:
SPECFEM3D is a widely used community code which simulates seismic wave propagation in earth-science applications. It can be run either on multi-core CPUs only or together with many-core GPU devices on large GPU clusters. The new implementation is optimally fine-tuned and achieves excellent performance results. Mesh coloring enables an efficient accumulation of border nodes in the assembly process over an unstructured mesh on the GPU and asynchronous GPU-CPU memory transfers and non-blocking MPI are used to overlap communication and computation, effectively hiding synchronizations. To demonstrate the performance of the inversion, we present two case studies run on the Cray XE6 and XK6 architectures up to 896 nodes: (1) focusing on most commonly used forward simulations, we simulate wave propagation generated by earthquakes in Turkey, and (2) testing the most complex simulation type of the package, we use ambient seismic noise to image 3D crust and mantle structure beneath western Europe.
Chair/Author Details:
Amik St-Cyr (Chair) - Royal Dutch Shell
Max Rietmann - University of Lugano
Peter Messmer - NVIDIA
Tarje Nissen-Meyer - ETH Zurich
Daniel Peter - Princeton University
Piero Basini - ETH Zurich
Dimitri Komatitsch - CNRS
Olaf Schenk - University of Lugano
Jeroen Tromp - Princeton University
Lapo Boschi - ETH Zurich
Domenico Giardini - ETH Zurich
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Forward and Adjoint Simulations of Seismic Wave Propagation on Emerging Large-Scale GPU Architectures
SESSION: Weather and Seismic Simulations
EVENT TYPE:
TIME: 4:00PM - 4:30PM
SESSION CHAIR: Amik St-Cyr
AUTHOR(S):Max Rietmann, Peter Messmer, Tarje Nissen-Meyer, Daniel Peter, Piero Basini, Dimitri Komatitsch, Olaf Schenk, Jeroen Tromp, Lapo Boschi, Domenico Giardini
ROOM:355-EF
ABSTRACT:
SPECFEM3D is a widely used community code which simulates seismic wave propagation in earth-science applications. It can be run either on multi-core CPUs only or together with many-core GPU devices on large GPU clusters. The new implementation is optimally fine-tuned and achieves excellent performance results. Mesh coloring enables an efficient accumulation of border nodes in the assembly process over an unstructured mesh on the GPU and asynchronous GPU-CPU memory transfers and non-blocking MPI are used to overlap communication and computation, effectively hiding synchronizations. To demonstrate the performance of the inversion, we present two case studies run on the Cray XE6 and XK6 architectures up to 896 nodes: (1) focusing on most commonly used forward simulations, we simulate wave propagation generated by earthquakes in Turkey, and (2) testing the most complex simulation type of the package, we use ambient seismic noise to image 3D crust and mantle structure beneath western Europe.
Chair/Author Details:
Amik St-Cyr (Chair) - Royal Dutch Shell
Max Rietmann - University of Lugano
Peter Messmer - NVIDIA
Tarje Nissen-Meyer - ETH Zurich
Daniel Peter - Princeton University
Piero Basini - ETH Zurich
Dimitri Komatitsch - CNRS
Olaf Schenk - University of Lugano
Jeroen Tromp - Princeton University
Lapo Boschi - ETH Zurich
Domenico Giardini - ETH Zurich
Click here to download .ics calendar file