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PETSc

• A set of utilities for the parallel solution of partial differential equations based on MPI.
• Can be used in C, C++, and Fortran 77 applications.
• Main components of PETSc are:
  • Mat - a suite of data structures and code for manipulating sparse matrices.
  • PC - a collection of preconditioners.
  • KSP - set of Krylov space iterative methods
  • SLES - high level interface for solution of linear systems
  • SNES - set of Newton-like methods for nonlinear systems

PETSc software hierarchy