<html>Hi,<br /><br />I would like to ask you concerning the computation of the Jacobian matrix via finite difference and coloring of the connectivity graph.<br />I wonder whether it is possible or not to color the Jacobian matrix of a given solver that evaluates the RHS with its associated connectivity in the global indeces of my solver (not PETSc).<br />As well, if it is possible to do this from an already partioned domain in parallel.<br />All of this is better explained in this post : https://scicomp.stackexchange.com/questions/28209/linking-petsc-with-an-already-parallel-in-house-finite-volume-solver <br /><br />Thanks in advance,<br /><br />Javier.<br /> </html>