Various Types of Applications on the Earth Simlator.

Various Types of Applications on

the Earth Simlator

Tsunami Simulationon the Earth

Simulator

Tsunami SimulationSupposed to be generated by Earthquake at Nankai Trough in the South-West part of Japan.

Quasi 3D Shallow-Water Equations– Kawahara-Kashiyama Scheme– 3-Step Explicit Time Marching– Linear Triangle Elements

Nankai Trough

Cabinet Office/Government of Japan

Nankai Trough

Nagoya University

Sea Depth in Nankai Trough

Sea Depth in Nankai Trough

Tsunami Simulation8.80105 nodes, 1.76106 elem's

Mesh Size = 1.25 km

Demonstration onthe Earth Simulator

64 PEs on Earth Simulator– 512 GFLOPS peak

1,200 km 1,200 km Region– 923,521 nodes, 1,843,200 elements– 42,255 steps

Parallel Programming Models– Flat MPI– OpenMP/MPI Hybrid

0

16

32

48

64

0 16 32 48 64

PE#

Sp

eed

Up

Demonstration onthe Earth Simulator

64 PEs, 8 SMP Nodes, 42,255 steps

●Flat MPI●Hybrid

ParallelSpeed-Up

0

50

100

150

200

250

0 8 16 24 32 40 48 56 64 72

PE#

GF

LO

PS

Demonstration onthe Earth Simulator

64 PEs, 8 SMP Nodes, 42,255 steps

●Flat MPI

GFLOPS

222 GFLOPS(43% of the Peak)

Groundwater FlowThrough

HeterogeneousPorous Media

BackgroundDeep Geological Disposal of HLW– High-Level Radioactive Waste

– Natural/Engineered Barriers

Long-term simulation (106~108 y) for nuclide transportation

Random Heterogeneous Field– Sedimentary Rock : Porous Media– Granite : Fracture

Deep Geological Disposalof HLW

Disposal Site

SedimentaryRock

GraniteFault

V.TestHole

Tunnels

V.TestHole

JNC, Japan.

ANDRA

Demonstration on the Earth Simulator

Coupled Flow Equations– Saturated Darcy Flow & Energy Equations– Primitive Variable Approach

ICCG/Multigrid for Poisson’s Eqn.

Up to 2M Meshes on ES (1PE)

2.4 GFLOPS (30% of the Peak)

Problem Setting

Heat Generation

Uniform Initial Flow

Uniform Temperature/Pressure at Z=0 surface

Results on EST=0.50, Temperature

Uini=0.00 Uini=0.02

Results on EST=1.00, Temperature

Uini=0.00 Uini=0.02

Results on EST=1.50, Temperature

Uini=0.00 Uini=0.02

Results on EST=2.00, Temperature

Uini=0.00 Uini=0.02

Results on EST=2.50, Temperature

Uini=0.00 Uini=0.02

Results on EST=3.00, Temperature

Uini=0.00 Uini=0.02

Results on EST=3.50, Temperature

Uini=0.00 Uini=0.02

Results on EST=4.00, Temperature

Uini=0.00 Uini=0.02

Results on EST=4.50, Temperature

Uini=0.00 Uini=0.02

Results on EST=5.00, Temperature

Uini=0.00 Uini=0.02

Results on EST=5.50, Temperature

Uini=0.00 Uini=0.02

Results on EST=6.00, Temperature

Uini=0.00 Uini=0.02

Results on EST=6.50, Temperature

Uini=0.00 Uini=0.02

Results on EST=7.00, Temperature

Uini=0.00 Uini=0.02

Results on EST=7.50, Temperature

Uini=0.00 Uini=0.02

Results on EST=8.00, Temperature

Uini=0.00 Uini=0.02

Results on EST=8.50, Temperature

Uini=0.00 Uini=0.02

Results on EST=9.00, Temperature

Uini=0.00 Uini=0.02

Results on EST=9.50, Temperature

Uini=0.00 Uini=0.02

Results on EST=10.0, Temperature

Uini=0.00 Uini=0.02

1.0E+00

1.0E+01

1.0E+02

1.0E+03

1.0E+04

1.E+03 1.E+04 1.E+05 1.E+06 1.E+07

Cells

sec.

Performance on 1 PEElapsed Time for 1,000 Steps

●ICCG●MG

1.0

1.5

2.0

2.5

3.0

1.E+03 1.E+04 1.E+05 1.E+06 1.E+07

Cells

GF

LO

PS

Performance on 1 PEGFLOPS (Over All)

●ICCG●MG

Thermal Stress Analysis of Nuclear

Experimental Facility ( Tube Sheet )

Demonstration on the Earth Simulator

FEA-Visualization Concurrent Coupling

200M DOF on ES (64 SMP nodes)

2.8 GFLOPS / PE (35% of the Peak)

Thermal Stress Analysis

of Tube Sheet

• 全体を均等加熱• PVR によるミーゼス応力表示