















n 
If you can
do matrixvector product,


you can run
iterative solvers like



conjugate
gradient



n 
Matrixvector
product amounts to



the usual
FEM calculation



(displacements
to forces), plus the



usual FEM
communication (update



shared
nodes)




n 
You don’t
even need to store the matrix



n 
Users can
easily solve iterative



problems
with the FEM framework



and IFEM
solvers!

