Options.xml

<ParameterList name="TeaLeaf">

<ParameterList name="Solver Parameters">
  <Parameter        name="Belos Solver"                         type="string"   value="CG"/>
  <Parameter        name="MueLu Preconditioner"                 type="bool"     value="false"/>
</ParameterList>

<ParameterList name="Belos Parameters">
  <Parameter        name="Output Frequency"                     type="int"      value="-1"/>
  <Parameter        name="Verbosity"                            type="int"      value="0"/>
  <Parameter        name="Convergence Tolerance"                type="double"   value="1.0e-15"/>
  <Parameter        name="Timer Label"                          type="string"   value="Outer Krylov solver"/>
</ParameterList>

<ParameterList name="MueLu Parameters">
  <Parameter        name="verbosity"                            type="string"   value="low"/>
  <Parameter        name="coarse: max size"                     type="int"      value="4800"/>
  <Parameter        name="coarse: type"                         type="string"   value="RELAXATION"/>
  <ParameterList    name="coarse: params">
    <Parameter      name="relaxation: type"                     type="string"   value="Symmetric Gauss-Seidel"/>
    <Parameter      name="relaxation: sweeps"                   type="int"      value="3"/>
    <Parameter      name="relaxation: damping factor"           type="double"   value="1.0"/>
  </ParameterList>
</ParameterList>
</ParameterList>