Running FasterCap

Run Menu dialog box

The FasterCap Run Menu dialog box contains many options. In the following, the different options will be explained in detail, with reference to the Run Menu figure here below.

Input file name

This information is mandatory to run the simulation. This is the file name of the root file containing FasterCap input data (see FasterCap Input Files for more information about input files). The file name can also include path information, or you can browse for the file using the dedicated button.

Automatic settings

For most simulations, you can rely on FasterCap to automatically adjust the settings to converge to a solution within the given error tolerance.

In this case, you must check the box 'Automatically calculate settings' and enter a value into the 'Stop when relative error is lower than (-a)' field. This value is the desired residual tolerance on the error, calculated as the Frobenius norm of the weighted capacitance matrix difference (this is one of the standard ways to measure the difference between two matrices).
For example, a value of 0.01 means a residual error of 1%, a value of 0.05 a resudual error of 5%, and so on.

You can also select if FasterCap should make an automatic choice of the preconditioner, to try to accelerate the solution (by performing less iterations); in this case, you must check the box 'Automatic preconditioner usage (-ap)'. There are reasons why you would not want the preconditioner to be automatically selected, in this case uncheck the box and specify the type of preconditioner you want to use in the 'Common settings' group (see below).

Manual settings

If you want absolute control over your simulation, you can force FasterCap to follow the manual settings.
In this case, you must NOT check the box 'Automatically calculate settings' and enter a value in all the fields of this section.

Common settings

General Options

These options can always be selected or not, independently from automatic or manual settings.