Dam Break Tutorial - 2.3.11 Running in parallel
 

Hello all,

I tried to extend the damBreak parallel tutorial to run it in two quad-core machines.

I have the same directories in both machines, ssh working without password.

I've set the decomposeParDict to 7 slaves.

The decomposePar command seems to work fine.

When I run the simulation (mpirun -np 8 --hostfile machines interFoam -parallel)
I got the message: "--> FOAM FATAL ERROR : Cannot find file "points" in directory "constant/polyMesh"

I've read some posts about it, but all of them were about the reconstruction. I've got it when trying to run the simulation...

Any suggestions?

Thanks in advance.

Hello vitors,

have you looked for the points in the constant/polyMesh directory? In case they don t exist, you should run blockMesh first, then decomposePar and finally mpirun...

Greetings, matthias

Hi Matthias. I checked it and the files are there. But I could solve and (as usual when we are begginers) the problem was in decompositionParDict file. The roots were incorrect. I was using the case directory and when changed to the upper directory the simulation ran.

Thanks for your reply,

Vitor

Error Running the Dambreak Tutorial
 

Hello All,



I am new to openFoam. I am facing some issues on running in parallel.



The first attempt was in trying to run the dambreak tutorial. got the below error:

--------------------------------------------------------------------------------------------------------------
Primary job terminated normally, but 1 process returned a non-zero exit code. Per user-direction, the job has been aborted.
--------------------------------------------------------------------------------------------------------------
The way I ran the solver is by typing in the terminal:

mpirun -np 4 interFoam -parallel




The second attempt is when I tried to ran lockExchange tutorial in twoLiquidMixingFoam solver. I got the below error:

--------------------------------------------------------------------------------------------------------------
There are not enough slots available in the system to satisfy the 8 slots
that were requested by the application:
twoLiquidMixingFoam

Either request fewer slots for your application, or make more slots available
for use.

--------------------------------------------------------------------------------------------------------------

The way I run the tutorials is by typing in the terminal:

mpirun -np 8 twoLiquidMixingFoam -parallel


I am running the tutorials on a university machine that has 12 cores.



I would much appreciate your assistance to resolve the above issues.



Thanks in advance.