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Default input parameters for aSP-AMG.

Default input parameters for aSP-AMG.

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Table 2 : Default input parameters for aSP-AMG.
Table 3 : aSP-AMG results considering the input parameters from Table 2.
Figure 4: Sparsity pattern plots of the test matrices tripod3239k,...
Table 4 : Sensitivity analysis with the coarsening parameters.
+3 Figure 5: Distribution of the relative total time of different runs...
A robust adaptive algebraic multigrid linear solver for structural mechanics
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  • Feb 2019
The numerical simulation of structural mechanics applications via finite elements usually requires the solution of large-size and ill-conditioned linear systems, especially when accurate results are sought for derived variables interpolated with lower order functions, like stress or deformation fields. Such task represents the most time-consuming k...
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Context 1
... we run a sensitivity analysis on aSP-AMG by testing dif-ferent setup configurations starting from a default configuration. To better understand the relative impact of each parameter, we vary only one or few of them at a time, leaving the others fixed to the "default" values as listed in Table 2. Numerical results considering the default input parameters of aSP-AMG are given in Table 3. ...
Context 2
... for aSP-AMG we provide results for two different setup configurations. In the first, aSP-AMG (Def), we consider its default input parameters as presented by Table 2. In the second, aSP-AMG (Opt), we use the optimal configuration for each test case leading to the lowest total time. ...

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