foam-extend-4.0 求解器fsiFoam，decomposePar 报错

[Gunther]

foam-extend-4.0 求解器fsiFoam，并行方法是scotch，decomposePar -cellDist 操作出现如下问题。跪求大佬解答！附上两个log文件。

log.decomposePar log.decomposePar.solid

/*---------------------------------------------------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | foam-extend: Open Source CFD                    |
|  \\    /   O peration     | Version:     4.0                                |
|   \\  /    A nd           | Web:         http://www.foam-extend.org         |
|    \\/     M anipulation  | For copyright notice see file Copyright         |
\*---------------------------------------------------------------------------*/
Build    : 4.0
Exec     : decomposePar -cellDist
Date     : May 17 2024
Time     : 10:04:23
Host     : dyfluid
PID      : 65508
CtrlDict : "/home/dyfluid/fe40_tanhao/fsiFoam/cylinderAsidePlate/cylinderAsidePlate_Re100_1.5D_laminar_inlet/fluid/system/controlDict"
Case     : /home/dyfluid/fe40_tanhao/fsiFoam/cylinderAsidePlate/cylinderAsidePlate_Re100_1.5D_laminar_inlet/fluid
nProcs   : 1
SigFpe   : Enabling floating point exception trapping (FOAM_SIGFPE).

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Time = 0
Create mesh for region region0

Calculating distribution of cells
--> FOAM Warning : 
    From function dlLibraryTable::open(const fileName& functionLibName)
    in file db/dlLibraryTable/dlLibraryTable.C at line 124
    could not load libmpi.so.1: cannot open shared object file: No such file or directory
--> FOAM Warning : 
    From function decompositionMethod::loadExternalLibraries()
    in file decompositionMethod/decompositionMethod.C at line 508
    Loading of decomposition library libparMetisDecomp.so unsuccesful. Some decomposition methods may not be  available
Selecting decompositionMethod scotch

[李东岳]

你换个fe40别的算例，比如pisoFoam，找个算例用scotch分解一下，看看能不能分解。

[Gunther]

@李东岳 李老师您好！首先感谢您的回复。我在fe-40的tutorial中找到pisoFoam的算例——cavity。执行decomposePar依旧存在上述问题。无论是用scotch还是simple均会存在上述问题。目前我是在dyfluid下载的虚拟机上运行的。

/*---------------------------------------------------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | foam-extend: Open Source CFD                    |
|  \\    /   O peration     | Version:     4.0                                |
|   \\  /    A nd           | Web:         http://www.foam-extend.org         |
|    \\/     M anipulation  | For copyright notice see file Copyright         |
\*---------------------------------------------------------------------------*/
Build    : 4.0
Exec     : decomposePar
Date     : May 17 2024
Time     : 14:35:59
Host     : dyfluid
PID      : 69780
CtrlDict : "/home/dyfluid/fe40_tanhao/pisoFoam/cavity/system/controlDict"
Case     : /home/dyfluid/fe40_tanhao/pisoFoam/cavity
nProcs   : 1
SigFpe   : Enabling floating point exception trapping (FOAM_SIGFPE).

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Time = 0
Create mesh for region region0

Calculating distribution of cells
--> FOAM Warning : 
    From function dlLibraryTable::open(const fileName& functionLibName)
    in file db/dlLibraryTable/dlLibraryTable.C at line 124
    could not load libmpi.so.1: cannot open shared object file: No such file or directory
--> FOAM Warning : 
    From function decompositionMethod::loadExternalLibraries()
    in file decompositionMethod/decompositionMethod.C at line 508
    Loading of decomposition library libparMetisDecomp.so unsuccesful. Some decomposition methods may not be  available
Selecting decompositionMethod scotch

之前一直没有注意到这个Warning，反正都能算，但有时reconstructPar的结果会出现混乱。如图1所示。这张图片是paraview在case type 为 Reconstructed Case 时显示的。

然而如果不进行reconstructPar，在paraview在case type 为 Decomposed Case 时则显示内容如图2所示。用单核跑的结果仍为图2所示。

李老师请多指教！！！

[李东岳]

http://dyfluid.com/download.html

是这个新版本虚拟机么

[Gunther]

@李东岳 李老师您好！不是这个最新版的，是之前下载的，目前最新版不包含fe40。fsiFoam基于fe40好安装一些

[李东岳]

我一会装个fe40，没问题之后更新一下这个虚拟机，就是需要时间，上传以及压缩比较费时间

[Gunther]

@李东岳 感谢李老师

[李东岳]

@Gunther

你试一下，切换到别的OpenFOAM版本下，decomposePar，然后切换回fe40进行计算。

等我编译完了发上来

[李东岳]

记录一下，由于fe40太老了，在ubuntu2204下面编译以下问题，给我卡住了1个小时..

1. sigFpe.C文件要改malloc
2. scotch要用6.0.4，不能用6.0.0
3. scotch要自己编译
4. fe41默认lib创建so连接，要不然还是找不到

已更新：http://dyfluid.com/download.html

[Gunther]

@李东岳 谢谢李老师指导！！！

[李东岳]

@Gunther 这个版本可以了么

[Gunther]

@李东岳 这回好使了，谢谢李老师 ：）