Automatic Solver Selection |
The software selects the solver based on the study type, analysis options, contact conditions, etc. Some options and conditions apply only to either Direct Sparse or FFEPlus.
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Direct sparse solver |
Selects the Direct Sparse solver.
Activate the Direct Sparse when you have enough RAM and multiple CPUs. For every 200,000 dof, you need 1 Gb of RAM for linear static analysis. The Direct sparse solver requires 10 times more RAM than the FFEPlus solver.
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FFEPlus |
Selects the FFEPlus solver to run the study. This solver uses advanced matrix reordering techniques that makes it more efficient for large problems.
For every 2, 000,000 dof, you need 1 Gb of RAM.
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Large Problem Direct Sparse |
By leveraging enhanced memory-allocation algorithms, the Large Problem Direct Sparse solver can handle simulation problems that exceed the physical memory of your computer.
If you initially select the Direct Sparse solver and due to limited memory resources it has reached an out-of-core solution, a warning message alerts you to switch to the Large Problem Direct Sparse. The Large Problem Direct Sparse (LPDS) solver is more efficient than the FFEPlus and Direct sparse solvers at taking advantage of multiple cores.
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Intel Direct Sparse |
The Intel Direct Sparse solver is available for static, thermal, frequency, linear dynamic,
and nonlinear studies.
By leveraging enhanced memory-allocation algorithms and multi-core
processing capability, the Intel Direct Sparse solver improves solution speeds for
simulation problems that are solved in-core.
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