how to run input script given in Tutorial

You may have compiled the program, but your system does not know where it is.
You could link lmp_ auto to your bin directory by
ln -s {path to lmp_auto} ~/bin/liggghts

Then you can run liggghts anywhere

Hi Rashid,

the symbolic link isn't created, since there is already a liggghts link there. See the output:
failed to create symbolic link '/usr/bin/liggghts': File exists

To rewrite the link, you can use the -f option and to write into /usr/bin you should probably run this as sudo:

sudo ln -sf /home/mahid/LIGGGHTS-PUBLIC/src/lmp_auto /usr/bin/liggghts
liggghts

Also please try to copy this line, since if you make any mistake it won't work. I just saw some inconsistencies with "LIGGGHTS-PUBLIC" and "LIGGGHTS_PUBLIC".

Cheers,
Josef

Hi Josef,

In addition, when I typed the command "liggghts", it returns as bash: /home/z3490628/LIGGGHTS-PUBLIC/src/lmp_serial: No such file or directory. I am confused that even tho I have changed the new path as lmp_auto, it still appears as bash.......lmp_serial.

Regards,
Josh

When I use the same command as Rashid, I am warned not to run as root. How do I run this an non-root/ fix the issue?

:~/LIGGGHTS-PUBLIC/examples/LIGGGHTS/Tutorials_public/chute_wear# mpirun -np 4 lmp_auto

// run_parallel_cfdemSolverPiso_settlingTestMPI_CFDDEM //

/home/israelmomoh/OpenFOAM/israelmomoh-v2406/run/myFoamProgram/tutorials/Excavator/parallelPlates/CFD

rm: cannot remove 'couplingFiles/*': No such file or directory
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5.x |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 5.x-7f7d351b741b
Exec : cfdemSolverPiso -parallel
Date : Feb 22 2025
Time : 17:00:52
Host : "IsraelMomohO"
PID : 549378
I/O : uncollated
Case : /home/israelmomoh/OpenFOAM/israelmomoh-v2406/run/myFoamProgram/tutorials/Excavator/parallelPlates/CFD
nProcs : 6
Slaves :
5
(
"IsraelMomohO.549379"
"IsraelMomohO.549380"
"IsraelMomohO.549381"
"IsraelMomohO.549382"
"IsraelMomohO.549383"
)

Pstream initialized with:
floatTransfer : 0
nProcsSimpleSum : 0
commsType : nonBlocking
polling iterations : 0
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations

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

Create mesh for time = 0

PISO: Operating solver in PISO mode

Reading field p

Reading physical velocity field U
Note: only if voidfraction at boundary is 1, U is superficial velocity!!!

Reading momentum exchange field Ksl

Reading voidfraction field voidfraction = (Vgas/Vparticle)

Creating density field rho

Reading particle velocity field Us

Reading/calculating face flux field phi

Generating interstitial face flux field phiByVoidfraction

Selecting incompressible transport model Newtonian
Selecting turbulence model type laminar
Selecting laminar stress model Stokes
Creating finite volume options from "system/fvOptions"

Reading g
Selecting locateModel engine
Selecting dataExchangeModel twoWayMPI
Starting up LIGGGHTS for first time execution
Executing input script '../DEM/parallePlates.lmp'
LIGGGHTS (Version LIGGGHTS-PUBLIC 3.8.0, compiled 2025-02-07-00:06:51 by israelmomoh, git commit 3d5c00f20519e6bb6eb6756f51f1ad36564e649d)
ERROR on proc 0: Cannot open input script ../DEM/parallePlates.lmp (../input.cpp:285)
--------------------------------------------------------------------------
MPI_ABORT was invoked on rank 0 in communicator MPI COMMUNICATOR 3 DUP FROM 0
with errorcode 1.

NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.
You may or may not see output from other processes, depending on
exactly when Open MPI kills them.
--------------------------------------------------------------------------
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5.x |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 5.x-7f7d351b741b
Exec : reconstructPar -noLagrangian
Date : Feb 22 2025
Time : 17:00:53
Host : "IsraelMomohO"
PID : 549396
I/O : uncollated
Case : /home/israelmomoh/OpenFOAM/israelmomoh-v2406/run/myFoamProgram/tutorials/Excavator/parallelPlates/CFD
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations

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

Skipping reconstructing lagrangian positions and fields

--> FOAM Warning :
From function int main(int, char**)
in file reconstructPar.C at line 256
No times selectedisraelmomoh@IsraelMomohO:~/OpenFOAM/israelmomoh-v2406/run/myFoamProgram/tutorials/Excavator/parallelPlates$