1 Introduction

This manual presents the Iterative Finite Element Matrix (IFEM) library, a library for easily solving matrix problems derived from finite-element formulations. The library is designed to be matrix-free, in that the only matrix operation required is matrix-vector product, and hence the entire matrix need never be assembled

IFEM is built on the mesh and communication capabilities of the Charm++ FEM Framework, so for details on the basic runtime, problem setup, and partitioning see the FEM Framework manual.