Jed, ? A?x=b, where A?=[A^-1 U B]= What does the notation above mean?
? That means A? consists A^-1 and B. A? is a sparse matrix at the order of 2 million. B = sparse matrix at the order of 2 million to be mixed and mingled with A^-1. What are the dimensions and sparsity of each piece. ? The dimension of A^-1 is about 225,000. B is about 2 millions. If you have an "inverse" floating around, what sort of operator is it the inverse of. ? A is a double complex matrix we have generated from a practical application using FEM. Jinquan -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120809/0771dc7f/attachment.html>
