Hi Guillermo, For some reason the CG solver failed to converge. Are you getting any iterations to execute at all, or does this happen at the very start of the simulation? Not knowing your session and mesh I would start by having a look at the TimeStep, Kinvis and the initial condition you are using. Also, not sure here, but I think the mesh file should precede the session file, i.e.: mpirun -np 8 IncNavierStokesSolver *mesh.msh.xml ****session.xml * Best, Stan On 22.11.2017 12:43, Guillermo wrote:

Dear all,

I am using the Mapping function (VCSMapping) and it gave me some errors which I do not really understand the meaning. The simulation was executed in parallel: mpirun -np 8 IncNavierStokesSolver session.xml mesh.msh.xml

Output message: ... CFL (zero plane): 1.15785e+20 (in elmt 520) CG iterations made = 5001 using tolerance of 1e-09 (error = nan, rhs_mag = inf) ------------------------------------------------------- Primary job  terminated normally, but 1 process returned a non-zero exit code.. Per user-direction, the job has been aborted. ------------------------------------------------------- --------------------------------------------------------------------------

mpirun 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: [[36638,1],4]   Exit code:    1 --------------------------------------------------------------------------

and the error messages are:

Fatal   : Level 0 assertion violation Exceeded maximum number of iterations

I also have obtained a batch of error messages, however I think they are result of the simulation errors. Nevertheless, if you want them or any other file, please let me know.

So please, could you explain to me why I have obtained these error?

Thank you very much for your help.

Regards, Guillermo

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