Hi, Rafael. Did you make sure to pass '-pc_type none' for both JFNK and NK?? If you do not explicitely pass it to NK, you will end-up by default using a preconditioner: ILU(0) in uniprocessors runs and Block-Jacobi with ILU(0) on each local block with two or more processors.... In short, pass always pass '-pc_type none' when comparing matrix-free and and non-matrix-free iterations .... If not, the comparison will not be fair ...
On Fri, Dec 19, 2008 at 4:33 PM, Rafael Santos Coelho <rafaelsantoscoelho at gmail.com> wrote: > Oh, and one more thing: lambda = 4.0 was the Bratu parameter chosen for all > tests. > -- Lisandro Dalc?n --------------- Centro Internacional de M?todos Computacionales en Ingenier?a (CIMEC) Instituto de Desarrollo Tecnol?gico para la Industria Qu?mica (INTEC) Consejo Nacional de Investigaciones Cient?ficas y T?cnicas (CONICET) PTLC - G?emes 3450, (3000) Santa Fe, Argentina Tel/Fax: +54-(0)342-451.1594
