I've started to wrap the functionality of the new code in petsc4py. However, I'm detecting some inconsistencies and possible improvements/simplifications and then I need some directions in order to push good fixes in petsc-dev. Then, here is my tow first questions. 1) Suppose I do MatGetFactor(A, solver_package, factor_type, &F) Then, if the call is successful, the following should happen a) F->factor should be equal to 'factor_type' b) F->preallocated sould be PETSC_TRUE c) F->assembled sould be PETSC_TRUE Is this OK? 2) What should be the output of MatView(F, viewer) ? -- 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