[Miguel Hernandez]

Hello to everyone.
Since I recently install MacOS Sequoia (15.4.1) I'm encountering this problem.
It seems that I'm not able to run anymore snappyHexMesh in parallel mode!

When I try this command:

mpirun -np 16 snappyHexMesh -overwrite -parallel

I get this:

--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting



--> FOAM FATAL ERROR: (openfoam-2412)
The dummy Pstream library cannot be used in parallel mode


    From static bool Foam::UPstream::init(int &, char **&, const bool)
    in file UPstream.C at line 49.

FOAM exiting

--------------------------------------------------------------------------
prterun detected that one or more processes exited with non-zero status,
thus causing the job to be terminated. The first process to do so was:

   Process name: [prterun-Mac-9514@1,2]
   Exit code:    1
--------------------------------------------------------------------------

More info:

I have installed openFoam from gelato app

https://github.com/gerlero/openfoam-app

on a Mac Studio M1 Ultra 64 gb RAM.

Please, can someone help me?

Thanks in advance.