| Units: | Yes/No |
| Default Value: | False (0) |
| Validation Rule: | False (0) or True (-1) |
| Description: | Cache the transmission matrices to disk for future use. |
This flag controls whether or not the PTDF calculations (B-matrix, etc) are cached to disk for use in future simulations. If caching is allowed subsequent simulations of the same system will read the cached matrices which will improve runtime.