This is a rountine to solve the (specified) coarsest-grid CSLP system approximately by using GMRES The CSLP is define by ReD-O2 scheme Be careful!!, after the whole iteration without achieving eps, then the value of j will be "m_iter+1".So we need a k. The default tolerance is 1E-08
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| type(GridSystem), | intent(inout) | :: | mg_solve |
The current coarsest grid system |