Solver types (Simcenter Samcef)

Depending on the analysis type and solution type, you can choose among several solvers to solve a model. The following tables give information on these solvers.

Solver types

Solver	Description
Sparse, Sparse (BCSLIB) (thermal)	This is the Boeing multi-frontal solver. This solver is recommended for medium to large problems and provides good performances.In most situations, it dramatically reduces the cost of solving linear systems of equations.This is the recommended choice for Linear Static, Modal, Buckling, Standalone Buckling, Linear Transient Response, and Linear Harmonic Response solutions.In a Nonlinear solution, this can be a good choice if the number of degrees of freedom is greater than 5000.
Frontal	The Frontal method is an old but stable out-of-core solver.It is reserved for very small and difficult models and should not be used as a default choice.
Skyline	This is a method in which no pivoting strategy is performed. Thus, it is reserved for small problems (the number of degrees of freedom is less than 5000).
MUMPS Parallel, Sparse (MUMPS) (thermal)	This the Multi-frontal Massively Parallel sparse direct solver that can be used when the Parallel mode is activated in the solution's Solver Parameters.The parallel solver is useful for solving large problems (>10e5 degrees of freedom) on a small number of processors (between 1 and 4 processors) and very large problems (>10e6 degrees of freedom) in parallel on shared memory or distributed memory machines.
Auto	This option lets the solver choose the most suitable solver according to the model's characteristics.In a Nonlinear or Heat Transfer solution, this is the recommended choice.

For more information, see the Solution Methods section in the Simcenter Samcef solver documentation.

Available solver types in solutions

In a Simcenter Samcef Structural analysis:

Solution type	Available solver types
Linear Static	Sparse, Frontal, and MUMPS Parallel.
ModalBucklingStandalone BucklingLinear Transient Response AnalysisLinear Harmonic Response Analysis	Sparse and Frontal.
Nonlinear	Auto, Sparse, Skyline, and MUMPS Parallel.
Superelement Creation	Sparse, Frontal, and MUMPS Parallel.

In a Simcenter Samcef Thermal analysis:

Solution type	Solver type
Heat Transfer	Auto, Sparse (BCSLIB), Skyline, and Sparse (MUMPS).

For more information, see the Samcef computation modules section of the Simcenter Samcef solver documentation.

Where do I find it?

Application	Pre/Post
Prerequisite	A Simulation file as the work part and displayed partSimcenter Samcef as the specified solver
Simulation Navigator	Right-click the active solution→Edit
Location in dialog box	Solver Parameters page→Solver Type group

Learn more

Linear static solution options (Simcenter Samcef)

Modal solution options (Simcenter Samcef)

Buckling solution options (Simcenter Samcef)

Standalone buckling solution options (Simcenter Samcef)

Reordering methods in Simcenter Samcef solvers

Cyclic symmetry solutions (Simcenter Samcef)

Creating a Simcenter Samcef superelement for Pre/Post system models

Recovering results inside a Simcenter Samcef superelement

Enabling bolt forces or displacements in subcases (Simcenter Samcef)

Incremental stability (Simcenter Samcef)

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Solver types (Simcenter Samcef), Simcenter 3D 2021.1 Series

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