How to fix engine errors - START HERE!


How to fix ‘engine error’ when running simulation or sweep.

Check if your simulation has enough RAM installed to run your simulation job (FDTD simulations) as described from the article:

Then try the suggestions here:


  1. Make sure that the MPI framework you are using as your job lauching preset is installed.
  2. Otherwise If one or any of the 3 is not installed, please install manually as shown below:

Test and try to resolve the problem

  • Download and run a simulation using one of our sample file, paralleltest.fsp (280.8 KB)

  • Try to run the simulation by changing the job launching preset to:

On Windows:
When using MPICH 2 and prompted for authentication as shown here:

Works using a different MPI framework

On Windows:

If the error persist on a certain design projects/simulations

  • check the simulation design and make changes
  • check the user account access on the folder where the simulation file is stored
  • try to store/save the simulation to a local drive and folder. i.e. your Desktop
  • refer to this KX post on memory requirements, Tips on running FDTD simulations
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