Running interDyMFoam in parallel

sega · March 5, 2009, 12:20

Hello World.

I tried to run an interDyMFoam case in parallel.
I first run the decomposePar and split the domain into two.
After running mpirun -np 2 interDyMFoam -parallel >log there is this entry in the log-file:

DICPCG: Solving for pcorr, Initial residual = 0, Final residual = 0, No Iterations 0
[0] #0 Foam::error::printStack(Foam:: Ostream&)

and still one processor is running interDyMFoam.

What went wrong?
BTW I'm using a 64bit machine.

sega · March 12, 2009, 05:54

Meanwhile I got the solver to work on two processors, but the computational time is the same as with one processor.

Although the two processors were busy the corresponding processor-directories are empty and the main directory is filled with the final solution directories.

I think there is something wrong, but I have no idea what it may be.
Maybe I made a mistake splitting the domain (which is containing a cyclic bc)?

decomposeParDict

March 5, 2009, 12:20	Hello World. I tried to run	#1
sega Senior Member Sebastian Gatzka Join Date: Mar 2009 Location: Frankfurt, Germany Posts: 729 Rep Power: 20	Hello World. I tried to run an interDyMFoam case in parallel. I first run the decomposePar and split the domain into two. After running mpirun -np 2 interDyMFoam -parallel >log there is this entry in the log-file: DICPCG: Solving for pcorr, Initial residual = 0, Final residual = 0, No Iterations 0 [0] #0 Foam::error::printStack(Foam:: Ostream&) and still one processor is running interDyMFoam. What went wrong? BTW I'm using a 64bit machine. __________________ Schrödingers wife: "What did you do to the cat? It's half dead!"

March 12, 2009, 05:54	Meanwhile I got the solver to	#2
sega Senior Member Sebastian Gatzka Join Date: Mar 2009 Location: Frankfurt, Germany Posts: 729 Rep Power: 20	Meanwhile I got the solver to work on two processors, but the computational time is the same as with one processor. Although the two processors were busy the corresponding processor-directories are empty and the main directory is filled with the final solution directories. I think there is something wrong, but I have no idea what it may be. Maybe I made a mistake splitting the domain (which is containing a cyclic bc)? decomposeParDict __________________ Schrödingers wife: "What did you do to the cat? It's half dead!"

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