Store and Reuse Solution Files
For large models, the runtime can be reduced if the solution coefficients are saved during the solution phase and re-used in a subsequent solution.
Note: For smaller models (where the run time is short), storage of the solution coefficients is
typically not required. Storage of solution coefficients creates large files for models with
many mesh elements.
On the Solve/Run tab, in the
Solution Settings group, click the 
Solver Settings icon.- Save/read matrix elements
- This option allows you to save or read from a .mat file. The .mat file is used to store the matrix elements of a linear equation system (MoM models only.)
- Save/read LU decomposed matrix
- This option allows you to save or read the .lud file. The .lud file is used to store the elements of the LU-decomposed MoM matrix.
- Save/read currents
- This option allows you to save or read the .str file. The .str file is used by default to allow fast solutions in cases where only the output requests are modified (without changing the rest of the model).
- Save/read cable per-unit-length parameters
- This option allows you to read or write a .pul file. The .pul files are used by default to allow the saving of cable per-unit-length parameters between frequency runs to allow fast solving of cable harnesses.
- Store convergence data (*.cgm file) for iterative solvers
- This option allows the residue of the iterative solutions to be written to a
.cgm file. Use this option to
inspect convergence behaviour.Note: The data is saved but not re-used.
Note:
The saving of .mat, .lud, .cgm and .pul (for parallel runs) files is only possible if the model directory is on a shared location accessible by all processes.