On 3/3/08, li pan <li76pan at yahoo.com> wrote: > Now my question is, if the SNES method includes a JFNK > method to solve the linear equation, why can't I use > it for my linear equation directly? And how?
Sorry, I'm a bit confused. Are you trying to solve a linear or a nonlinear problem? What are you exactly trying to do? > > thanx > > pan > > > > --- Matthew Knepley <knepley at gmail.com> wrote: > > > On Mon, Mar 3, 2008 at 11:05 AM, li pan > > <li76pan at yahoo.com> wrote: > > > Dear all, > > > If I want to solve a linear equation in matrix > > free > > > scheme, how is the command line argument? I only > > know > > > for nonlinear solver it is _snes_mf > > > > What do you mean here? How do you have linear > > equations without > > a matrix? If you mean that you would only like to > > specify the action > > of the operator, you should use MATSHELL. > > > > Matt > > > > > thanx > > > > > > pan > > > > > > > > > > > > > > > > ____________________________________________________________________________________ > > > Looking for last minute shopping deals? > > > Find them fast with Yahoo! Search. > > > http://tools.search.yahoo.com/newsearch/category.php?category=shopping > > > > > > > > > > > > > > -- > > What most experimenters take for granted before they > > begin their > > experiments is infinitely more interesting than any > > results to which > > their experiments lead. > > -- Norbert Wiener > > > > > > > > > > ____________________________________________________________________________________ > Never miss a thing. Make Yahoo your home page. > http://www.yahoo.com/r/hs > > -- 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
