PyAMG is a library of **Algebraic Multigrid (AMG)** solvers with a
convenient Python interface.

AMG is a multilevel technique for solving large-scale linear systems
with optimal or near-optimal efficiency.  Unlike geometric multigrid,
AMG requires little or no geometric information about the underlying
problem and develops a sequence of coarser grids directly from the
input matrix. This feature is especially important for problems
discretized on unstructured meshes and irregular grids.