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SGI OpenFOAM Cloud Benchmark, OpenFOAM Study Meeting for beginner@Kansai, 7th Jul. 2012
This document summarizes the results of benchmarks performed on an SGI Altix ICE8200 cluster to compare the performance of OpenFOAM simulations using OpenMPI and SGI MPT for different problem sizes. Three meshes with 0.25, 1, and 4 million cells were used to simulate laminar flow in a 2D lid-driven cavity. The benchmarks found that for smaller problem sizes, OpenMPI achieved up to 80% more timesteps per day than SGI MPT, but for larger problems with 4 million cells, SGI MPT was up to 40% faster.
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SGI OpenFOAM Cloud Benchmark, OpenFOAM Study Meeting for beginner@Kansai, 7th Jul. 2012
- 1. Jul. 7th 2012OpenFOAM Study Meeting for beginner @ Kansai Masashi Imano Masashi Imano SGI OpenFOAM Cloud Benchmark 1
- 2. Jul. 7th 2012OpenFOAM Study Meeting for beginner @ Kansai Masashi Imano Test cluster conditions • Hardware: SGI Altix ICE8200 • CPU: Intel Xeon X5365 3.00GHz 4cores x 2 • Node: 16 nodes • Memory: 16GB/node (No swap memory) • Interconnect: InfiniBand DDR • OS: SUSE LINUX ENTERPRISE SERVER 10.3 • MPI: ✓ SGI MPT (1.2.6) ✓ OpenMPI (ThirdParty package distributed with OpenFOAM) 2
- 3. Jul. 7th 2012OpenFOAM Study Meeting for beginner @ Kansai Masashi Imano • OpenFOAM versions: 2.1.x • MPI: ✓ OpenMPI (Ver. 1.5.3, mpirun options: --mca btl openib,self,sm) ✓ SGI MPT (Ver.1.2.6) • Benchmark problem ✓ Flow: Lid-driven 2D cavity (tutorials) ✓ Re: 100 (laminar) ✓ solver: icoFoam (piso) ✓ Linear solver: AMG (p), PBiCG (U) ✓ Mesh: S(500 2,Δt:5x10-5 s), M(1000 2, Δt:10-5 s), L(2000 2, Δt:10-5 s) x Ux = 1 m/s d = 0.1 m y Calculation conditions 3
- 4. Jul. 7th 2012OpenFOAM Study Meeting for beginner @ Kansai Masashi Imano Benchmark results 0 37500 75000 112500 150000 1 2 4 8 127000 140000 80000 15940 10810 21700 60000 37700 Timesteps/Day Number of Nodes OpenMPI SGI MPT Mesh: S (5002= 1/4 Millions) 4
- 5. Jul. 7th 2012OpenFOAM Study Meeting for beginner @ Kansai Masashi Imano Benchmark results 0 2500 5000 7500 10000 1 2 4 8 8470 9240 5520 3260 4620 6240 4940 317 Timesteps/Day Number of Nodes OpenMPI SGI MPT Mesh: M (10002 =1 Million) 80%up 50%up 5
- 6. Jul. 7th 2012OpenFOAM Study Meeting for beginner @ Kansai Masashi Imano Benchmark results 0 750 1500 2250 3000 1 2 4 8 2520 1560 510 280 1780 1430 450 260 Timesteps/Day Number of Nodes OpenMPI SGI MPT Mesh: L (20002 =4 Millions) 40%up 6
- 7. Jul. 7th 2012OpenFOAM Study Meeting for beginner @ Kansai Masashi Imano Any Questions? 7