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Iterative solver implicit matrix-vector multiply option for reducing memory requirements for models with parabolic tet elements. There are four options:
- 0 - Implicit matrix-vector multiply is disabled. The full tet element stiffness matrix is used by the solver and additional memory is required.
- 1 - Implicit matrix-vector multiply is enabled. A reduced tet element stiffness matrix is generated and used by the solver reducing memory usage and increasing performance.
- 2 - Same as option 1 but requires less memory with a possible degradation in performance.
- 3 - Same as option 2 but uses the least amount of memory by skipping the assembly of the global mass and stiffness matrixes. The following limitations exists with this setting:
- The AUTOSPC function will use only diagonal stiffness and is therefore less robust (see
AUTOSPC in this section).
- Forces of multipoint constraint are not available.
- The reported epsilon (solution error measure) is the value given by the PCGLSS solver and not the value determined independently (see
DELTASTRAINEGOUT in this section).
This parameter is only applicable to the PCGLSS iterative solver.
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