MOOSE/Moltres memory usage #209
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64GB RAM shared by 8 processors should be more than enough for a problem with 570,000 degrees of freedom. You may refer to this page for recommendations on the petsc options.
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64GB RAM shared by 8 processors should be more than enough for a problem with 570,000 degrees of freedom. You may refer to this page for recommendations on the petsc options.
asm
withlu
as the subsolver will require less memory.ilu
is usually not good enough to resolve the strong coupling between the flux and precursor variables.automatic_scaling
is good for the problem you're describing. If the flux and precursor values are small,automatic_scaling
scales their residual or jacobian values up to approximately unity (~1). You'll also wantcompute_scaling_once = false
so that Moltres adjusts the scaling factor at every timestep.