Solver Selection Guidelines

This topic sums up the list of available solvers and their specificities.

Solver	Memory use	Disk use	Speed estimation	Number of equations	Analysis Types	Limitations
Skyline	Low	High	Slow	Up to 50000.	All	N/A
Iterative ICCF	High	Not used	Fast for well-conditioned problems.	15 000 - 1,000,000 and more.	Linear statics, Modal analysis, Buckling.	N/A
Iterative diagonal	Minimal	Minimal	Slow	15 000 - 1,000,000 and more.	Linear statics, Modal analysis, Buckling.	N/A
Iterative Gauss-Cholesky	Minimal	Minimal	Slow	15 000 - 1,000,000 and more.	Linear statics, Modal analysis, Buckling.	N/A
Iterative multilevel ICCF	High	Minimal	Fast for well-conditioned problems.	15 000 - 1,000,000 and more.	Linear statics, Modal analysis, Buckling.	available structure types: 3D (bar, shell, solid and all special finite elements), 2D frame.
Iterative multilevel diagonal	Minimal	Minimal	Slow	15 000 - 1,000,000 and more.	Linear statics, Modal analysis, Buckling.	available structure types: 3D (bar, shell, solid and all special finite elements), 2D frame.
Iterative multilevel Gauss-Cholesky	Minimal	Minimal	Medium (for well-conditioned problems)	15 000 - 1,000,000 and more.	Linear statics, Modal analysis, Buckling.	available structure types: 3D (bar, shell, solid and all special finite elements), 2D frame.