Keywords derived from solveur_sys_base

solveur_sys_base

• Inherits from: class_generic
• Defined in: src/Kernel/Math/SolvSys/SolveurSys_base.cpp
• Used by: convection_diffusion_temperature_ft_disc, gcp_ns, ice, implicit_steady, implicite, multigrid_solver, navier_stokes_aposteriori, navier_stokes_ft_disc, navier_stokes_ibm, navier_stokes_ibm_turbulent, navier_stokes_phase_field, navier_stokes_qc, navier_stokes_standard, navier_stokes_standard_sensibility, navier_stokes_turbulent, navier_stokes_turbulent_qc, navier_stokes_wc, newmark, op_implicite, parametre_diffusion_implicite, parametre_implicite, piso, precondsolv, qdm_multiphase, sets, simple, simpler, solveur_lineaire_std, solveur_u_p, test_solveur

Basic class to solve the linear system.

Usable keywords (pick one): amg, amgx, cholesky, cudss, gcp_ns, optimal, petsc, petsc_gpu, gcp, gmres

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• Keywords derived from petsc
• Keywords derived from solv_gcp

amg

• Inherits from: solveur_sys_base
• Defined in: src/Kernel/Math/SolvSys/Solv_AMG.cpp

Wrapper for AMG preconditioner-based solver which switch for the best one on CPU/GPU Nvidia/GPU AMD

Parameters:

• solveur (type: string) not_set
• option_solveur (type: bloc_lecture) not_set

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cholesky

• Inherits from: solveur_sys_base
• Defined in: src/Kernel/Math/SolvSys/Solv_Cholesky.cpp

Cholesky direct method.

Parameters:

• [impr] (type: flag) Keyword which may be used to print the resolution time.
• [quiet] (type: flag) To disable printing of information

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optimal

• Inherits from: solveur_sys_base
• Defined in: src/Kernel/Math/SolvSys/Solv_Optimal.cpp

Optimal is a solver which tests several solvers of the previous list to choose the fastest one for the considered linear system.

Parameters:

• seuil (type: float) Convergence threshold
• [impr] (type: flag) To print the convergency of the fastest solver
• [quiet] (type: flag) To disable printing of information
• [save_matrice | save_matrix] (type: flag) To save the linear system (A, x, B) into a file
• [frequence_recalc] (type: int) To set a time step period (by default, 100) for re-checking the fatest solver
• [nom_fichier_solveur] (type: string) To specify the file containing the list of the tested solvers
• [fichier_solveur_non_recree] (type: flag) To avoid the creation of the file containing the list

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solv_gmres

Synonyms: gmres

• Inherits from: solveur_sys_base
• Defined in: src/Kernel/Math/SolvSys/Solv_Gmres.cpp

Preconditioned GMRES.

Parameters:

• [diag] (type: flag) Keyword to precondition with the diagonal
• [seuil] (type: float) Value of the final residue. The solver ceases iterations when the Euclidean residue standard ||Ax-B|| is less than this value. default value 1e-12.
• [impr] (type: flag) Keyword which is used to request display of the Euclidean residue standard each time this iterates
• [save_matrice | save_matrix] (type: int) To save the matrix in a file.
• [quiet] (type: flag) To not displaying any outputs of the solver.
• [nb_it_max] (type: int) Keyword to set the maximum iterations number for the solver.
• [controle_residu] (type: int) Keyword of Boolean type (by default 0). If set to 1, check the convergence after solve