[jthornton232]

Hello,


I have created a utility for OpenFOAM V4 which allows me to run multiple serial simulations in parallel using MPI. I have this working on my workstation but I want to run it on a cluster at work. However when I submit the job to the cluster I get messages saying "ctrl_connect/connect: Connection refused". I seem to get this problem only when I run OpenFOAM executables (I have run other simple programs in parallel without issue).


The program is below:


#include "fvCFD.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
int main(int argc, char *argv[])
{
argList::validArgs.append("folderName");
argList::validArgs.append("runFileName");
argList args(argc, argv);

if (!args.check()) {
FatalError.exit();
}
word folderName = args[1]; // folder name from user
int rank = Pstream::myProcNo(); // processor rank
word folder = folderName+name(rank+1); // folder name with the rank
if (!isDir(folder)){ // check if folder exists
FatalErrorInFunction << folder << " does not exist." << exit(FatalError);
}
word fileName = args[2]; // file name from user
if (!isFile(folder+"/"+fileName)){ // check if file exists
FatalErrorInFunction << folder << "/" << fileName << " does not exist." << exit(FatalError);
}
system(folder+"/"+fileName); // run the given folder
return 0;
}



And here is the output when run:

// ************************************************** *********************** //



/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 4.x |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 4.x-d214c8dfd5ba
Exec : multiFolderRun -parallel MISP Allrun
Date : Aug 14 2019
Time : 17:22:39
Host : "r585i1n9"
PID : 34800
Case : /nobackupp12/jmthorn4/PATO_Cases/TC1-driver/ALLMISPS/test
nProcs : 7
Slaves :
6
(
"r585i1n9.34801"
"r585i1n9.34802"
"r585i1n9.34803"
"r585i1n9.34804"
"r585i1n9.34805"
"r585i1n9.34806"
)

Pstream initialized with:
floatTransfer : 0
nProcsSimpleSum : 0
commsType : nonBlocking
polling iterations : 0
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Allowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
ctrl_connect/connect: Connection refused
Finalising parallel run



Can anyone shed some light on the issue?