<p>Scientific computing has become an indispensable tool in numerous fields, such as physics, mechanics, biology,<br>finance and industry. For example, it enables us, thanks to efficient algorithms adapted to current computers, to<br>simulate, without the help of models or experimentations, the deflection of beams in bending, the sound level in a theater room or a fluid flowing around an aircraft wing.<br>This book presents the scientific computing techniques applied to parallel computing for the numerical simulation of large-scale problems; these problems result from systems modeled by partial differential equations. Computing concepts will be tackled via examples.<br>Implementation and programming techniques resulting from the finite element method will be presented for direct solvers, iterative solvers and domain decomposition methods, along with an introduction to MPI and OpenMP.</p>