This is a class project I wrote 3-4 years ago. It is a complete implementation of algebraic multigrid (AMG) using nothing but PETSc primitives. It also contains a complete reimplementation of the CLJP coarsening algorithm.
C C++ Fortran Shell Java Python
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Makefile
Makefile.rob
debug_std.py
luke.c
mglib.c
mglib.h
multigrid_test1.c
multigrid_test2.cc