PETSc Developers Manual by The PETSc Team

2 PETSc is a set of extensible software libraries for scientific computation. PETSc is de-signed using a object-oriented architecture. This means that libraries consist of objects that have certain, defined functionality. This document defines how these objects are imple-mented. This manual discusses the PETSc library design and describes how to develop new library codes that are compatible with other PETSc components including PETSc 3.0. The idea is not to develop one massive library that everyone shoves code into; rather, to develop an architecture that allows many people to (as painlessly as possible) contribute (and maintain) their own libraries, in a distributed fashion. The text assumes that you are familiar with PETSc and have access to PETSc source code and documentation (available vi