Hi Jed, Thanks for the ultra fast response.
Apart from the nonzero initial guess, is -ksp_type preonly -pc_type sor -pc_sor_its 10 right? Am 24.04.2012 03:29, schrieb Jed Brown: > On Mon, Apr 23, 2012 at 20:27, tribur <burckhardt at itis.ethz.ch [1]> > wrote: > >> I would like to do 10 iterations of a point-by-point Gauss-Seidel >> procedure for the purpose of testing. >> >> Is it correct if I type "mpiexec -n 1 ... -ksp_type preonly >> -pc_type sor -pc_sor_its 10"? >> >> How can I define the initial guess nonzero? > > With a nonzero initial guess, you are doing Richardson (not preonly). > You can set the nonzero initial guess as usual > (KSPSetInitialGuessNonzero()). > > Links: > ------ > [1] mailto:burckhardt at itis.ethz.ch
