OpenFOAM-2.3.0の全チュートアリアル・ベンチマーク

OpenFOAM-2.3.0の
全チュートアリアル・ベンチマーク
今野雅（株式会社OCAEL）
OpenCAE Local Workshop@Kansai 20th Sep 2014 1 Masashi Imano (OCAEL Co. Ltd.)

OpenFOAMのベンチマークテスト
✓コンパイラ種別(intel/gnu)やコンパイラ最適化オプションを変えて，で
きるだけ多くのケースでベンチマークテストを行い，可能ならば性能を最
適化したい．
✓全チュートリアルケースを対象にベンチマークテストを行うのが理想的．
✓全実行(Allrun)は時間かかりすぎ．
✓テスト実行(Alltest)は1ステップ実行のため，時間比較の精度が悪い．
✓24時間以内で終了させるため，Alltestを500ステップ実行するように改
造して，ベンチマークテストを行い，計算時間の比較を行なった．
✓ただし，実行時間が莫大な foamyHexMesh/mixerVessel や，実行に
失敗するケースは除いた．

OpenFOAMのビルド
✓対象システム
• Aシステム (Intel Xeon L5640, 2.26GHz) ベクトル化: SSE4.2
• Dシステム (Intel Xeon E5-2670 v2, 2.5GHz) ベクトル化: AVX
✓intelコンパイラ (Ver 14.0.0)
• boost: 標準設定の1_55_0はビルド失敗 → 1_54_0
• 最適化オプション: -O3はfoamyHexMeshが動かない → -O2
✓gnuコンパイラ
• Ver: 4.8.2はCGALやfoamyHexMeshのビルド失敗 → 4.8.3
• 最適化オプション: -O3に-msse4.2を付けても0.1%の違い→ -O3

intelコンパイラの最適化オプション検討
✓対象システム
• A システム (Intel Xeon L5640 , 2.26GHz) ～SSE4.2
• D システム (Intel Xeon E5-2670 v2, 2.5 GHz) ～SSE4.2, AVX
✓ ケース I1
• 最適化オプション: -axAVX,SSE4.2 -O2 -no-prec-div
• 全てのシステムで動作．DシステムでAVXが有効(-axオプションで切替)
✓ケース I2
• 最適化オプション: -xSSE4.2 -O2 -no-prec-div
• 全てのシステムで動作．DシステムでAVXが有効ではない
✓ケース I3
• 最適化オプション: -xHost -O2 -no-prec-div (OpenFOAMデフォルト)
• Aシステムでは動作しない．DシステムではAVXが有効．

7200
5400
3600
1800
0
D system (Intel Xeon E5-2670 v2, 2.5GHz)
1.015 x
0 1800 3600 5400 7200
計算時間の比較 (Dシステム)
CPU time [s] (Case I3: Intel -xHost)
CPU time [s] (Case I1: Intel -axAVX,SSE4.2)
7200
5400
3600
1800
0
1.020 x
0 1800 3600 5400 7200
CPU time [s] (Case I2: Intel -xSSE4.2)
intelコンパイラでベクトル化オプションを変えても計算時間はほぼ変らない
5
OpenCAE Local Workshop@Kansai 20th Sep 2014 Masashi Imano (OCAEL Co. Ltd.)

計算時間の比較 (Aシステム)
7200
5400
3600
1800
0
A system (Intel Xeon L5640, 2.26GHz)
0.995 x
0 1800 3600 5400 7200
CPU time [s] (Case I2: Intel -xSSE4.2)
intelコンパイラでベクトル化オプションを変えても計算時間はほぼ変らない
6
OpenCAE Local Workshop@Kansai 20th Sep 2014 Masashi Imano (OCAEL Co. Ltd.)

intel vs gnu
7200
5400
3600
1800
0
1.147 x
0 1800 3600 5400 7200
CPU time [s] (Case G2: gnu -O3)
7200
5400
3600
1800
0
A system (Intel Xeon L5640, 2.26GHz)
1.154 x
0 1800 3600 5400 7200
CPU time [s] (Case G2: gnu -O3)
intel版に対するgnu版の計算時間の回帰式の係数は1.15で15%の増加

計算時間の比(Dシステム, intelコンパイラ)
0.85
0.9
0.95
1
1.05
1.1
1.15
icoFoam/elbow
icoFoam/cavityHighRe
icoFoam/cavityGrade
icoFoam/cavityFine
icoFoam/cavityClipped
icoFoam/cavity
foamyHexMesh/simpleShapes
foamyHexMesh/flange
foamyHexMesh/blob
fireFoam/les/smallPoolFire3D
fireFoam/les/oppositeBurningPanels
fireFoam/les/flameSpreadWaterSuppressionPanel
financialFoam/europeanCall
electrostaticFoam/chargedWire
dnsFoam/boxTurb16
compressibleMultiphaseInterFoam/laminar/damBreak4phase
coalChemistryFoam/simplifiedSiwek
chtMultiRegionSimpleFoam/multiRegionHeaterRadiation
chtMultiRegionSimpleFoam/heatExchanger
chtMultiRegionFoam/snappyMultiRegionHeater
chtMultiRegionFoam/multiRegionHeater
chemFoam/nc7h16
chemFoam/ic8h18
chemFoam/gri
buoyantSimpleFoam/hotRadiationRoomFvDOM
buoyantSimpleFoam/hotRadiationRoom
buoyantSimpleFoam/externalCoupledCavity
buoyantSimpleFoam/circuitBoardCooling
buoyantSimpleFoam/buoyantCavity
buoyantPimpleFoam/hotRoom
buoyantBoussinesqSimpleFoam/iglooWithFridges
buoyantBoussinesqSimpleFoam/hotRoom
buoyantBoussinesqPimpleFoam/hotRoom
boundaryFoam/boundaryWallFunctions
boundaryFoam/boundaryLaunderSharma
adjointShapeOptimizationFoam/pitzDaily
XiFoam/ras/moriyoshiHomogeneousPart2
XiFoam/ras/moriyoshiHomogeneousHydrogen
XiFoam/ras/moriyoshiHomogeneous
SRFSimpleFoam/mixer
SRFPimpleFoam/rotor2D
PDRFoam/flamePropagationWithObstacles
MRFMultiphaseInterFoam/mixerVessel2D
MRFInterFoam/mixerVessel2D
MPPICFoam/injectionChannel
MPPICFoam/cyclone
MPPICFoam/column
MPPICFoam/Goldschmidt
LTSReactingParcelFoam/verticalChannel
LTSReactingParcelFoam/counterFlowFlame2D
LTSReactingFoam/ras/counterFlowFlame2D
DPMFoam/Goldschmidt
CPU time ratio
FOCUS D system (Intel Xeon E5-2670 v2, 2.5GHz)
I2/I1, average:1.017
I1 Better
I1 Worse
I1 > I2，I1 ≒ I3
I1:-axAVX,SSE4.2
I2:-xSSE4.2
I3:-xHost

0.85
0.9
0.95
1
1.05
1.1
1.15
potentialFoam/pitzDaily
potentialFoam/cylinder
porousSimpleFoam/straightDuctImplicit
porousSimpleFoam/angledDuctImplicit
porousSimpleFoam/angledDuctExplicit
pisoFoam/ras/cavityCoupledU
pisoFoam/ras/cavity
pisoFoam/les/pitzDailyMapped
pisoFoam/les/pitzDaily
pimpleFoam/pitzDaily
pimpleFoam/elipsekkLOmega
pimpleFoam/channel395
pimpleFoam/TJunctionFan
pimpleFoam/TJunction
pimpleDyMFoam/wingMotion/wingMotion2D_pimpleDyMFoam
pimpleDyMFoam/oscillatingInletACMI2D
pimpleDyMFoam/movingCone
pimpleDyMFoam/mixerVesselAMI2D
nonNewtonianIcoFoam/offsetCylinder
multiphaseInterFoam/laminar/damBreak4phaseFine
multiphaseInterFoam/laminar/damBreak4phase
multiphaseEulerFoam/mixerVessel2D
multiphaseEulerFoam/damBreak4phaseFine
multiphaseEulerFoam/damBreak4phase
multiphaseEulerFoam/bubbleColumn
moveDynamicMesh/SnakeRiverCanyon
laplacianFoam/flange
interPhaseChangeFoam/cavitatingBullet
interPhaseChangeDyMFoam/propeller
interMixingFoam/laminar/damBreak
interFoam/ras/weirOverflow
interFoam/ras/damBreakPorousBaffle
interFoam/ras/damBreakFine
interFoam/ras/damBreak
interFoam/les/nozzleFlow2D
interFoam/laminar/damBreakFine
interFoam/laminar/damBreak
interFoam/laminar/capillaryRise
interDyMFoam/ras/testTubeMixer
interDyMFoam/ras/sloshingTank3D
interDyMFoam/ras/sloshingTank3D6DoF
interDyMFoam/ras/mixerVesselAMI
interDyMFoam/ras/floatingObject
interDyMFoam/ras/damBreakWithObstacle
icoUncoupledKinematicParcelFoam/hopper/hopperInitialState
icoUncoupledKinematicParcelFoam/hopper/hopperEmptying
CPU time ratio
I1:-axAVX,SSE4.2
I2:-xSSE4.2
I3:-xHost
I1 > I2，I1 ≒ I3
I1 Better
I1 Worse

0.85
0.9
0.95
1
1.05
1.1
1.15
twoPhaseEulerFoam/laminar/mixerVessel2D
twoPhaseEulerFoam/laminar/fluidisedBed
twoPhaseEulerFoam/laminar/bubbleColumnIATE
twoPhaseEulerFoam/laminar/bubbleColumn
twoPhaseEulerFoam/RAS/fluidisedBed
twoPhaseEulerFoam/RAS/bubbleColumn
twoPhaseEulerFoam/LES/bubbleColumn
twoLiquidMixingFoam/lockExchange
sprayFoam/aachenBomb
sonicLiquidFoam/decompressionTankFine
sonicLiquidFoam/decompressionTank
sonicFoam/ras/prism
sonicFoam/laminar/shockTube
sonicFoam/laminar/forwardStep
solidEquilibriumDisplacementFoam/beamEndLoad
solidDisplacementFoam/plateHole
simpleReactingParcelFoam/verticalChannel
simpleFoam/turbineSiting
simpleFoam/pitzDailyExptInlet
simpleFoam/pitzDaily
simpleFoam/pipeCyclic
simpleFoam/mixerVessel2D
simpleFoam/airFoil2D
shallowWaterFoam/squareBump
settlingFoam/ras/tank3D
settlingFoam/ras/dahl
rhoSimplecFoam/squareBend
rhoSimpleFoam/angledDuctExplicitFixedCoeff
rhoPorousSimpleFoam/angledDuctImplicit
rhoPorousSimpleFoam/angledDuctExplicit
rhoPimplecFoam/angledDuct
rhoPimpleFoam/ras/mixerVessel2D
rhoPimpleFoam/ras/cavity
rhoPimpleFoam/ras/angledDuct
rhoPimpleFoam/les/pitzDaily
rhoPimpleDyMFoam/annularThermalMixer
rhoLTSPimpleFoam/angledDuct
rhoCentralFoam/wedge15Ma5
rhoCentralFoam/shockTube
rhoCentralFoam/obliqueShock
rhoCentralFoam/forwardStep
rhoCentralFoam/LadenburgJet60psi
reactingParcelFoam/verticalChannel
reactingParcelFoam/parcelInBox
reactingParcelFoam/filter
reactingParcelFilmFoam/splashPanel
reactingParcelFilmFoam/rivuletPanel
reactingParcelFilmFoam/hotBoxes
reactingParcelFilmFoam/cylinder
reactingFoam/ras/counterFlowFlame2D
CPU time ratio
I1:-axAVX,SSE4.2
I2:-xSSE4.2
I3:-xHost
I1 > I2，I1 ≒ I3
I1 Better
I1 Worse

0.85
0.9
0.95
1
1.05
1.1
1.15
icoFoam/elbow
icoFoam/cavityGrade
icoFoam/cavityFine
icoFoam/cavity
foamyHexMesh/flange
foamyHexMesh/blob
dnsFoam/boxTurb16
chemFoam/nc7h16
chemFoam/ic8h18
chemFoam/gri
SRFSimpleFoam/mixer
MPPICFoam/cyclone
MPPICFoam/column
DPMFoam/Goldschmidt
CPU time ratio
FOCUS A system (Intel Xeon L5640, 2.26GHz)
I1:-axAVX,SSE4.2
I2:-xSSE4.2
I1 ≒ I2
I1 Better
I1 Worse
計算時間の比(Aシステム, intelコンパイラ)

0.85
0.9
0.95
1
1.05
1.1
1.15
pisoFoam/ras/cavity
CPU time ratio
I1 Better
I1 Worse
I1:-axAVX,SSE4.2
I2:-xSSE4.2
I1 ≒ I2

0.85
0.9
0.95
1
1.05
1.1
1.15
sonicFoam/ras/prism
CPU time ratio
I1 Better
I1 Worse
I1:-axAVX,SSE4.2
I2:-xSSE4.2
I1 ≒ I2

MPPICFoam/cyclone chemFoam/nc7h16
I1 Better
icoFoam/elbow
icoFoam/cavityGrade
icoFoam/cavityFine
icoFoam/cavity
foamyHexMesh/flange
foamyHexMesh/blob
dnsFoam/boxTurb16
chemFoam/nc7h16
chemFoam/ic8h18
chemFoam/gri
SRFSimpleFoam/mixer
MPPICFoam/cyclone
MPPICFoam/column
I1 Worse
I1:intel compiler
-axAVX,SSE4.2
G2:gnu compiler
-O3
計算時間の比(Dシステム，intel vs gnu)
0.6
0.8
1
1.2
1.4
1.6
1.8
2
DPMFoam/Goldschmidt
CPU time ratio
G2/I1, average:1.066

I1 Better
pisoFoam/ras/cavity
I1 Worse
I1:intel compiler
-axAVX,SSE4.2
G2:gnu compiler
-O3
0.6
0.8
1
1.2
1.4
1.6
1.8
2
CPU time ratio

sonicFoam/ras/prism
I1:intel compiler
-axAVX,SSE4.2
G2:gnu compiler
-O3
I1 Better
I1 Worse
0.6
0.8
1
1.2
1.4
1.6
1.8
2
CPU time ratio

MPPICFoam/cyclone
I1 Better
icoFoam/elbow
icoFoam/cavityGrade
icoFoam/cavityFine
icoFoam/cavity
foamyHexMesh/flange
foamyHexMesh/blob
dnsFoam/boxTurb16
chemFoam/nc7h16
chemFoam/ic8h18
chemFoam/gri
SRFSimpleFoam/mixer
MPPICFoam/cyclone
MPPICFoam/column
I1 Worse
I1:intel compiler
-axAVX,SSE4.2
G2:gnu compiler
-O3
計算時間の比(Aシステム，intel vs gnu)
0.6
0.8
1
1.2
1.4
1.6
1.8
2
DPMFoam/Goldschmidt
CPU time ratio

multiphaseInterFoam/
laminar/
damBreak4phaseFine
I1 Better
pisoFoam/ras/cavity
I1 Worse
I1:intel compiler
-axAVX,SSE4.2
G2:gnu compiler
-O3
0.6
0.8
1
1.2
1.4
1.6
1.8
2
CPU time ratio
G2/I1, average:1.038 multiphaseEulerFoam/
damBreak4phaseFine

sonicFoam/ras/prism
I1:intel compiler
-axAVX,SSE4.2
G2:gnu compiler
-O3
I1 Better
I1 Worse
0.6
0.8
1
1.2
1.4
1.6
1.8
2
CPU time ratio

まとめ
✓intelコンパイラの最適化オプションとして-axAVX,SSE4.2を
用いることで，DシステムではAVXが有効，Aシステムでは
SSE4.2が自動的に有効になるバイナリができる．
✓-axAVX,SSE4.2オプション版は，-xAVXや-xSSE4.2の版と
速度がほぼ同等である．
✓intel版に対するgnu版の計算時間の比の平均は，Dシステムで
約1.07，Aシステムで約1.04であり，平均するとgnu版の速度
低下は10%以下である．ただし，gnu版のほうが40%以上遅い
ケースがA，D両システムとも5ケースあった．

OpenFOAM-2.3.0の全チュートアリアル・ベンチマーク

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