Hi 

I am new to community here

I have been trying to setup MPI computing in CST for reflect array simulations. I have access to two machines HP and DELL. I want to perform distributed simulation with these two machines using MPI feature. On HP machine the cluster test completed successfully with the help of procedure mentioned in MPI_Computing_Guide_2020. But on DELL machine the test failed at asking for credentials step. I have registered with my windows login credentials as per the steps mentioned above mentioned documentation. But due to some error associated with Intel MPI 2017.0.4 version my DELL PC couldn't complete the test successfully. When I approached Intel community they said they won't provide support for older versions and suggested me to upgrade to newer MPI versions. 

So I have installed the 2019.0.4 version and checked whether it is working without asking credentials by using a simple instruction

                                                              mpiexec -n 1 hostname

and it worked perfectly fine without asking for credentials.

I would like to know how this can be used by replacing the older version of MPI that comes with CST installation