[P1361]

Hi everybody,

I tried to run a case on 16 processors using buoyantPimpleFoam solver.

I decomposed the domain according to the user's guide. And then run the case using the command:



<path>$ mpirun -np 16 buoyantPimpleFoam -parallel



but I got the following error:



--> FOAM FATAL ERROR:
bool IPstream::init(int& argc, char**& argv) : attempt to run parallel on 1 processor

From function UPstream::init(int& argc, char**& argv)
in file UPstream.C at line 79.

FOAM aborting




I have already used Foam in parallel, and am pretty sure that I've done everything correctly. Anybody has an idea what this error means?!

Please help! I may lose my job!!

[jiahui_93]

hi, i know it was a long post. Just to share in case others are facing it. I solved it by recheck and changing the number of domains in decomposeParDict to that of the np. I am not sure if your case has the same careless mistake
because line 79 shows this:

if (numprocs <= 1)
    {
        FatalErrorInFunction
            << "bool IPstream::init(int& argc, char**& argv) : "
               "attempt to run parallel on 1 processor"
            << Foam::abort(FatalError);
    }

Btw, I read a solution which is u can move the line relating to OF to the end of the bashrc file in opt/OpenFoam 5/ etc/ bashrc.

Please correct me if I am wrong. Thanks