test01 BoomerAMG solver
test02 BoomerAMG, CG
test03 ParaSails, CG
test04 Pilut, GMRES
test06 BoomerAMG solver, degree=4
test07 BoomerAMG, CG, degree=4
test08 ParaSails, CG, degree=4
test09 Pilut, GMRES, degree=4
