The Analyst simulation log describes the current state of the simulation, as the calculations are performed. Most information on the AMR process displays in the run table, which provides an overview of the progress and current state of the simulation during the AMR sequence. The run table is updated at the end of every AMR iteration, and at the end of the simulation. The following is an example run table.
This table represents the end of a simulation. The information included is summarized as follows:
Iteration: The iteration number and type. The text indicates whether each iteration was a ports only solve, or a full solve.
Elements: The number of elements used to find the solution. Depending on the geometry and materials, this number may be smaller than the total number of elements in the system. Elements inside metals or in electrically isolated regions of the geometry do not impact the final solution, and as a result are not used in the FEM calculation. This value indicates the number of elements that are used in the FEM calculation; so the value is less than or equal to the number of elements generated in the system.
Delta Zc/Kz (0.01): The characteristic port impedance (Zc) is used as a metric for convergence in the port solve (the propagation constant is used in cases where Zc is not available). As the solution converges, the change of Zc from one solution to the next decreases. The value in parentheses (here 0.01) indicates the threshold for convergence required by the solver. Once Delta Zc reaches this threshold, the port solution is considered converged and an asterisk displays next to the value as shown, circled in red.
Delta Magnitude and Phase S (0.02 5): The system S-parameters are used as a metric for convergence in the full solve. During the ports only solves, S is not calculated so the value in this column is "n/a". Once the solver performs the full solves, the value in this column indicates the maximum change in any entry in the S matrix from one iteration to the next. The first value in parentheses (here 0.02) indicates the magnitude threshold for S-matrix convergence required by the solver. Once Delta S reaches this threshold, the full solution is considered converged and an asterisk displays next to the value.
You may choose to include the change in phase of the S-matrix entries as an additional convergence criterion. If you do so, the tolerance is indicated in parentheses at the top of the column (here, 5 degrees). If phase is chosen as a criterion the full solution is considered converged when both the magnitude delta and the phase delta meet their thresholds.
Time (min): The elapsed time since the start of the simulation, in minutes.
Peak Memory (MB): The first value indicates the maximum amount of memory in MB used so far for the simulations. The value in parentheses indicates the same quantity in terms of percent of allotted memory.
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