200万网格并行算力测试(OpenFOAM版本)
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@ustbwenwu 多谢,已更新
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win10_bash ubuntu18.04 CPU: i7-9750H RAM: 16G OpenFOAM-6 # cores Wall time (s): ------------------------ 8 842.92 4 838.84 2 846.9 1 1414.95
感觉有问题啊
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心血来潮测一下服务器 为什么会有这样的error 提示? of41能做么
Reading/calculating face flux field phi Selecting incompressible transport model Newtonian Selecting turbulence model type laminar No MRF models present Creating finite volume options from "constant/fvOptions" Selecting finite volume options model type meanVelocityForce [0] [0] [0] --> FOAM FATAL IO ERROR: [0] keyword meanVelocityForceCoeffs is undefined in dictionary "/home/local.njord/maosui/benchMark/core_8/constant/fvOptions.momentumSource" [0] [0] file: /home/local.njord/maosui/benchMark/core_8/constant/fvOptions.momentumSource from line 20 to line 25. [0] [0] From function const Foam::dictionary& Foam::dictionary::subDict(const Foam::word&) const [0] in file db/dictionary/dictionary.C at line 642. [0] [2] [2] [2] --> FOAM FATAL IO ERROR: [2] keyword meanVelocityForceCoeffs is undefined in dictionary "IOstream.momentumSource" [2]
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ubuntu18.04 CPU: AMD EPYC 7282 16-Core Processor*2 RAM: 252G OpenFOAM-4.1 # cores Wall time (s): ------------------------ 32 82.4 16 121.69 8 140.26 4 268.85 2 498.06 1 1125.41
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CPU型号:i7-7700 系统:linux系统 OpenFOAM版本:OpenFOAM-8 4 594.83 2 666.07 1 956.33
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CPU型号: Intel(R) Xeon(R) Gold 6248R 系统:ubuntu 18.04 版本:openfoam-8 48 98.12 32 96.14 16 128.01 8 155.18 4 304.95 2 542.82 1 1068.49
没关超线程,物理核48 感觉不合理啊哈哈 明天再弄一次
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中午在服务器上测试了一下这个算例,发现算例受核间通信的影响确实很大,在核心数较高时计算时长的收益很小甚至负收益==
以及8164是老cpu了吧,单核计算能力捉急。。CPU型号: Intel(R) Xeon(R) Platinum 8164 CPU @ 2GHz (8) 系统: Ubuntu 18.04.5 LTS 内存: 791160068 kB OpenFOAM版本:OpenFOAM-6 192 149.49 128 51.77 64 48.97 32 64.36 16 111.44 8 153.07 4 338.46 2 611.9 1 1249.7```
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CPU型号: Intel(R) Xeon(R) Gold 6248R 系统:ubuntu 18.04 版本:openfoam-8 48 86.08 32 93.05 16 125.13 8 153.34 4 287.14 2 524.41 1 1013.26
正常了。。。
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CPU型号: Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz 系统:Linux mint 19.3 版本:openfoam-6 # cores Wall time (s): ------------------------ 8 552.63 4 623.67 2 814.52 1 1419.05
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CPU型号:AMD Athlon X4 860K 系统:Ubuntu 20.04 (WSL2) OpenFOAM版本:OpenFOAM-8 4 1226.66 2 1528.62 1 2310.36
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@stickyrice 我来垫个底
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@huiCfd 楼上比你的还老的来啦
哈哈 不过 @stickyrice WSL2可能对性能也有影响
2020年9月3日 05:56
45/223
2025年3月20日 16:11