Solution Disappeared


I am trying to solve Free and Porous media fluid flow in COMSOL.

The model is 4.7 millions DOFs and I am using direct MUMPS solver. I have Intel Xeon E5-264016 (2 sockets/ 16 cores) and 192GB of RAM.

The problem I am facing is that the residual tolerance of 0.001 is reached [the nonlinear solver diplays 100% of solution progress].

But the solver did not stop and continue to do calculations [the nonlinear solver diplays new 18% of solution progress] until the computer restarts without my command and the solution file is disappeared

I dont understand why this happening and what to do

Can anyone please help with this ?

Thank you in advance


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