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Dam Break Tutorial - 2.3.11 Running in parallel

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Old   January 12, 2012, 09:21
Question Dam Break Tutorial - 2.3.11 Running in parallel
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Vitor Vasconcelos
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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.
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Old   January 17, 2012, 06:38
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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
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Old   January 17, 2012, 06:46
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Vitor Vasconcelos
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Quote:
Originally Posted by |matthias| View Post
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
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Old   August 2, 2019, 19:22
Default Error Running the Dambreak Tutorial
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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.
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