4C-multiphysics · maxfirmbach · Apr 3, 2026
diff --git a/src/core/linear_solver/src/method/4C_linear_solver_method_input.cpp b/src/core/linear_solver/src/method/4C_linear_solver_method_input.cpp
@@ -94,11 +94,6 @@ namespace Core::LinearSolver
                     "be declared stalled and thus force recomputation of the preconditioner.",
                 .default_value = 50}),
 
-        parameter<int>(
-            "AZSUB", {.description = "The maximum size of the Krylov subspace used with \"GMRES\" "
-                                     "before\n a restart is performed.",
-                         .default_value = 50}),
-
         parameter<bool>("THROW_IF_UNCONVERGED",
             {.description =
                     "If set to true, the iterative linear solver "

diff --git a/src/core/linear_solver/src/method/4C_linear_solver_method_linalg.cpp b/src/core/linear_solver/src/method/4C_linear_solver_method_linalg.cpp
@@ -350,7 +350,6 @@ Teuchos::ParameterList translate_four_c_to_belos(const Teuchos::ParameterList& i
         break;
       case Core::LinearSolver::IterativeSolverType::gmres:
         beloslist.set("Solver Type", "GMRES");
-        beloslist.set("Num Blocks", inparams.get<int>("AZSUB"));
         break;
       default:
       {

diff --git a/tests/input_files/consinter3D_tsi_hex8_tet4.4C.yaml b/tests/input_files/consinter3D_tsi_hex8_tet4.4C.yaml
@@ -37,7 +37,6 @@ SOLVER 2:
   SOLVER: "Belos"
   AZPREC: "Teko"
   AZTOL: 1e-10
-  AZSUB: 300
   THROW_IF_UNCONVERGED: false
   TEKO_XML_FILE: "xml/block_preconditioner/thermo_solid.xml"
   NAME: "Thermo_Structure_Interaction_Solver"

diff --git a/tests/input_files/constr2D_MPC_angle.4C.yaml b/tests/input_files/constr2D_MPC_angle.4C.yaml
@@ -13,7 +13,6 @@ PROBLEM TYPE:
 SOLVER 1:
   SOLVER: "UMFPACK"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
-  AZSUB: 300
 STRUCTURAL DYNAMIC:
   INT_STRATEGY: Old
   RESEVERYERGY: 1

diff --git a/tests/input_files/constr2D_MPC_dist.4C.yaml b/tests/input_files/constr2D_MPC_dist.4C.yaml
@@ -22,7 +22,6 @@ STRUCTURAL DYNAMIC:
 SOLVER 1:
   SOLVER: "UMFPACK"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
-  AZSUB: 300
   NAME: "Structure_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/constr3D_NormComp_STI.4C.yaml b/tests/input_files/constr3D_NormComp_STI.4C.yaml
@@ -23,7 +23,6 @@ STRUCTURAL DYNAMIC:
 SOLVER 1:
   SOLVER: "UMFPACK"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
-  AZSUB: 300
 MATERIALS:
   - MAT: 1
     MAT_VISCONEOHOOKE:

diff --git a/tests/input_files/elch_2D_binaryNewman_twoEqu_divi_implParams_porousMedium.4C.yaml b/tests/input_files/elch_2D_binaryNewman_twoEqu_divi_implParams_porousMedium.4C.yaml
@@ -45,7 +45,6 @@ SOLVER 1:
   AZTOL: 1e-10
   AZOUTPUT: 1000
   AZREUSE: 5
-  AZSUB: 100
   MUELU_XML_FILE: "xml/multigrid/elasticity_template.xml"
   NAME: "Sca_Tra_Solver"
 MATERIALS:

diff --git a/tests/input_files/elch_RCE_rotsymm_pbc.4C.yaml b/tests/input_files/elch_RCE_rotsymm_pbc.4C.yaml
@@ -47,7 +47,6 @@ SOLVER 2:
   AZITER: 100
   AZTOL: 1e-10
   AZOUTPUT: 20
-  AZSUB: 40
   NAME: "Fluid_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/elch_gaussian_hill_pbc_NP_genalpha_calcInitDt_calcInitPot.4C.yaml b/tests/input_files/elch_gaussian_hill_pbc_NP_genalpha_calcInitDt_calcInitPot.4C.yaml
@@ -38,7 +38,6 @@ SOLVER 1:
   AZITER: 500
   AZTOL: 1e-10
   AZREUSE: 20
-  AZSUB: 200
   NAME: "Sca_Tra_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/.../input_files/elch_gaussian_hill_pbc_Newman_twoEqu_genalpha_calcInitDt_calcInitPot.4C.yaml b/.../input_files/elch_gaussian_hill_pbc_Newman_twoEqu_genalpha_calcInitDt_calcInitPot.4C.yaml
@@ -44,7 +44,6 @@ SOLVER 1:
   AZITER: 500
   AZTOL: 1e-10
   AZREUSE: 20
-  AZSUB: 200
   NAME: "Sca_Tra_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/elch_gaussian_hill_pbc_genalpha.4C.yaml b/tests/input_files/elch_gaussian_hill_pbc_genalpha.4C.yaml
@@ -32,7 +32,6 @@ SOLVER 1:
   AZITER: 500
   AZTOL: 1e-10
   AZREUSE: 20
-  AZSUB: 200
   NAME: "Sca_Tra_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/elch_natconv.4C.yaml b/tests/input_files/elch_natconv.4C.yaml
@@ -55,7 +55,6 @@ SOLVER 2:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-10
-  AZSUB: 25
   NAME: "Fluid_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/elch_natconv_enc_pde_elim.4C.yaml b/tests/input_files/elch_natconv_enc_pde_elim.4C.yaml
@@ -58,13 +58,11 @@ SOLVER 1:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-10
-  AZSUB: 25
   NAME: "Sca_Tra_Solver"
 SOLVER 2:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-10
-  AZSUB: 25
   NAME: "Fluid_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/elch_natconv_new_ost.4C.yaml b/tests/input_files/elch_natconv_new_ost.4C.yaml
@@ -51,7 +51,6 @@ SOLVER 2:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-10
-  AZSUB: 25
   NAME: "Fluid_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/elch_pper_butlervolmer.4C.yaml b/tests/input_files/elch_pper_butlervolmer.4C.yaml
@@ -52,7 +52,6 @@ SOLVER 2:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-10
-  AZSUB: 25
   NAME: "Fluid_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/elch_pper_secondary_current_distribution.4C.yaml b/tests/input_files/elch_pper_secondary_current_distribution.4C.yaml
@@ -38,7 +38,6 @@ SOLVER 1:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-10
-  AZSUB: 25
   NAME: "Sca_Tra_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/f2_drivencavity32x32_Re1000_stat.4C.yaml b/tests/input_files/f2_drivencavity32x32_Re1000_stat.4C.yaml
@@ -37,7 +37,6 @@ SOLVER 1:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-07
-  AZSUB: 25
   THROW_IF_UNCONVERGED: false
   NAME: "Fluid_Solver"
 DESIGN POINT DIRICH CONDITIONS:

diff --git a/tests/input_files/f2_kimmoin25x25_oseen_instat.4C.yaml b/tests/input_files/f2_kimmoin25x25_oseen_instat.4C.yaml
@@ -30,7 +30,6 @@ SOLVER 1:
   AZTOL: 1e-14
   AZOUTPUT: 50
   AZREUSE: 1
-  AZSUB: 1000
   NAME: "Fluid_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/f3_beltrami_4x4x4_hdg_lagrange.4C.yaml b/tests/input_files/f3_beltrami_4x4x4_hdg_lagrange.4C.yaml
@@ -32,7 +32,6 @@ SOLVER 1:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 2e-05
-  AZSUB: 100
 MATERIALS:
   - MAT: 1
     MAT_fluid:

diff --git a/tests/input_files/f3_beltrami_4x4x4_hdg_legendre.4C.yaml b/tests/input_files/f3_beltrami_4x4x4_hdg_legendre.4C.yaml
@@ -32,7 +32,6 @@ SOLVER 1:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 2e-05
-  AZSUB: 100
 MATERIALS:
   - MAT: 1
     MAT_fluid:

diff --git a/tests/input_files/f3_beltrami_8x8_meshtying_ale.4C.yaml b/tests/input_files/f3_beltrami_8x8_meshtying_ale.4C.yaml
@@ -58,7 +58,6 @@ SOLVER 2:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-09
-  AZSUB: 1000
 MATERIALS:
   - MAT: 1
     MAT_fluid:

diff --git a/tests/input_files/f3_beltrami_8x8_meshtying_ale_euler.4C.yaml b/tests/input_files/f3_beltrami_8x8_meshtying_ale_euler.4C.yaml
@@ -58,7 +58,6 @@ SOLVER 2:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-09
-  AZSUB: 1000
 MATERIALS:
   - MAT: 1
     MAT_fluid:

diff --git a/tests/input_files/f3_beltrami_8x8_meshtying_bmat_merged.4C.yaml b/tests/input_files/f3_beltrami_8x8_meshtying_bmat_merged.4C.yaml
@@ -47,7 +47,6 @@ SOLVER 2:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-09
-  AZSUB: 1000
 MATERIALS:
   - MAT: 1
     MAT_fluid:

diff --git a/tests/input_files/f3_beltrami_8x8_meshtying_smat.4C.yaml b/tests/input_files/f3_beltrami_8x8_meshtying_smat.4C.yaml
@@ -46,7 +46,6 @@ SOLVER 2:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-09
-  AZSUB: 1000
 MATERIALS:
   - MAT: 1
     MAT_fluid:

diff --git a/tests/input_files/f3_beltrami_8x8_meshtying_smat_velcoupled.4C.yaml b/tests/input_files/f3_beltrami_8x8_meshtying_smat_velcoupled.4C.yaml
@@ -48,7 +48,6 @@ SOLVER 2:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-09
-  AZSUB: 1000
 MATERIALS:
   - MAT: 1
     MAT_fluid:

diff --git a/tests/input_files/f3_beltrami_sphere_hdg_legendre.4C.yaml b/tests/input_files/f3_beltrami_sphere_hdg_legendre.4C.yaml
@@ -32,7 +32,6 @@ SOLVER 1:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 2e-05
-  AZSUB: 100
 MATERIALS:
   - MAT: 1
     MAT_fluid:

diff --git a/tests/input_files/f3_beltrami_tet10_hdg.4C.yaml b/tests/input_files/f3_beltrami_tet10_hdg.4C.yaml
@@ -33,7 +33,6 @@ SOLVER 1:
   AZITER: 200
   AZTOL: 0.001
   AZOUTPUT: 1
-  AZSUB: 100
   THROW_IF_UNCONVERGED: false
   NAME: "Fluid_Solver"
 DESIGN SURF DIRICH CONDITIONS:

diff --git a/tests/input_files/f3_bfs_xwall_8x8x8_bl1_turbinflow.4C.yaml b/tests/input_files/f3_bfs_xwall_8x8x8_bl1_turbinflow.4C.yaml
@@ -52,15 +52,13 @@ SOLVER 1:
   IFPACK_XML_FILE: "f3_fbs_xfluid_ifpack1.xml"
   AZTOL: 1e-12
   AZREUSE: 10
-  AZSUB: 40
   NAME: "Fluid_Solver"
 SOLVER 9:
   SOLVER: "Belos"
   AZSOLVE: "CG"
   IFPACK_XML_FILE: "f3_fbs_xfluid_ifpack2.xml"
   AZTOL: 1e-12
   AZREUSE: 5
-  AZSUB: 40
   NAME: "Projection_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/f3_cha_xwall_6x8x6.4C.yaml b/tests/input_files/f3_cha_xwall_6x8x6.4C.yaml
@@ -40,7 +40,6 @@ SOLVER 1:
   AZITER: 2000
   AZTOL: 1e-18
   AZREUSE: 8
-  AZSUB: 120
   NAME: "Fluid_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/f3_cha_xwall_6x8x6_dirich.4C.yaml b/tests/input_files/f3_cha_xwall_6x8x6_dirich.4C.yaml
@@ -48,15 +48,13 @@ SOLVER 1:
   AZITER: 2000
   AZTOL: 1e-12
   AZREUSE: 8
-  AZSUB: 40
   NAME: "Fluid_Solver"
 SOLVER 9:
   SOLVER: "Belos"
   AZSOLVE: "CG"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-12
   AZREUSE: 5
-  AZSUB: 40
   NAME: "Projection_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/f3_cha_xwall_6x8x6_grad_ol2p_bs_ramp.4C.yaml b/tests/input_files/f3_cha_xwall_6x8x6_grad_ol2p_bs_ramp.4C.yaml
@@ -37,15 +37,13 @@ SOLVER 1:
   AZITER: 2000
   AZTOL: 1e-12
   AZREUSE: 8
-  AZSUB: 40
   NAME: "Fluid_Solver"
 SOLVER 9:
   SOLVER: "Belos"
   AZSOLVE: "CG"
   IFPACK_XML_FILE: "f3_cha_xwall_ifpack.xml"
   AZTOL: 1e-12
   AZREUSE: 5
-  AZSUB: 40
   NAME: "Projection_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/f3_cha_xwall_6x8x6_gradres_p_bs_ramp_ale.4C.yaml b/tests/input_files/f3_cha_xwall_6x8x6_gradres_p_bs_ramp_ale.4C.yaml
@@ -45,15 +45,13 @@ SOLVER 1:
   AZITER: 2000
   AZTOL: 1e-12
   AZREUSE: 8
-  AZSUB: 40
   NAME: "Fluid_Solver"
 SOLVER 9:
   SOLVER: "Belos"
   AZSOLVE: "CG"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-12
   AZREUSE: 5
-  AZSUB: 40
   NAME: "Projection_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/f3_channel_meshtying_DCmaster.4C.yaml b/tests/input_files/f3_channel_meshtying_DCmaster.4C.yaml
@@ -42,7 +42,6 @@ SOLVER 1:
   AZTOL: 1e-09
   AZOUTPUT: 50
   AZREUSE: 5
-  AZSUB: 100
   NAME: "Meshtying_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/f3_drivencavity_stat_recongradL2.4C.yaml b/tests/input_files/f3_drivencavity_stat_recongradL2.4C.yaml
@@ -40,7 +40,6 @@ SOLVER 1:
   AZITER: 1500
   AZTOL: 1e-17
   AZOUTPUT: 50
-  AZSUB: 100
   NAME: "Fluid_Solver"
 SOLVER 2:
   SOLVER: "UMFPACK"

diff --git a/tests/input_files/f3_kimmoin_stat_24x24x1_wedge15_pseudo2D.4C.yaml b/tests/input_files/f3_kimmoin_stat_24x24x1_wedge15_pseudo2D.4C.yaml
@@ -33,7 +33,6 @@ SOLVER 1:
   AZTOL: 1e-13
   AZOUTPUT: 50
   AZREUSE: 1
-  AZSUB: 1000
   NAME: "Fluid_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/f3_nurbs27_AfGenAlpha.4C.yaml b/tests/input_files/f3_nurbs27_AfGenAlpha.4C.yaml
@@ -17,7 +17,6 @@ SOLVER 1:
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-07
   AZREUSE: 5
-  AZSUB: 100
   NAME: "Fluid_Solver"
 PROBLEM TYPE:
   PROBLEMTYPE: "Fluid"

diff --git a/tests/input_files/f3_periodic_hill_w_forcing_24x12x12.4C.yaml b/tests/input_files/f3_periodic_hill_w_forcing_24x12x12.4C.yaml
@@ -37,7 +37,6 @@ SOLVER 1:
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-20
   AZREUSE: 8
-  AZSUB: 40
   THROW_IF_UNCONVERGED: false
   NAME: "Fluid_Solver"
 MATERIALS:

diff --git a/tests/input_files/f3_turbinflow_doublechan.4C.yaml b/tests/input_files/f3_turbinflow_doublechan.4C.yaml
@@ -44,7 +44,6 @@ SOLVER 1:
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 0.0001
   AZREUSE: 5
-  AZSUB: 40
   NAME: "Fluid_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/fsi_dc3D_part_ait_ga_ost_xwall.4C.yaml b/tests/input_files/fsi_dc3D_part_ait_ga_ost_xwall.4C.yaml
@@ -56,7 +56,6 @@ SOLVER 9:
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-12
   AZREUSE: 5
-  AZSUB: 40
   NAME: "Projection_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/fsi_ow3D_mtr_drt.4C.yaml b/tests/input_files/fsi_ow3D_mtr_drt.4C.yaml
@@ -32,15 +32,12 @@ STRUCT NOX/Printing:
   Outer Iteration StatusTest: false
 SOLVER 1:
   SOLVER: "UMFPACK"
-  AZSUB: 300
   NAME: "Ale_Solver"
 SOLVER 2:
   SOLVER: "UMFPACK"
-  AZSUB: 300
   NAME: "Structure_Solver"
 SOLVER 3:
   SOLVER: "UMFPACK"
-  AZSUB: 300
   NAME: "Fluid_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/homogenized-constrained-mixture-cyl-aniso-impl-nofibdir.4C.yaml b/tests/input_files/homogenized-constrained-mixture-cyl-aniso-impl-nofibdir.4C.yaml
@@ -25,7 +25,6 @@ STRUCTURAL DYNAMIC:
   LINEAR_SOLVER: 1
 SOLVER 1:
   SOLVER: "UMFPACK"
-  AZSUB: 5000
 MATERIALS:
   - MAT: 1
     MAT_GrowthRemodel_ElastHyper:

diff --git a/tests/input_files/levelset_gaussian_hill_pbc.4C.yaml b/tests/input_files/levelset_gaussian_hill_pbc.4C.yaml
@@ -34,7 +34,6 @@ SOLVER 1:
   SOLVER: "Belos"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZTOL: 1e-09
-  AZSUB: 40
   NAME: "Sca_Tra_Solver"
 MATERIALS:
   - MAT: 1

diff --git a/tests/input_files/locsys2D.4C.yaml b/tests/input_files/locsys2D.4C.yaml
@@ -30,7 +30,6 @@ SOLVER 1:
   AZSOLVE: "CG"
   IFPACK_XML_FILE: "xml/preconditioner/ifpack.xml"
   AZCONV: "AZ_noscaled"
-  AZSUB: 40
   NAME: "Structure_Solver"
 DESIGN POINT DIRICH CONDITIONS:
   - E: 1