On Oct 22, 2025, at 11:51, Rhiannon Silva <[email protected]> wrote: > > Hi, > > The GW150914 example parameter file uses 8th order finite differencing and I > need a 6th order version for comparison in terms of both accuracy and speed. > Apart from changing the finite differencing orders from 8 to 6, and I assume > GlobalDerivative automatically selects the correct dissipation order since > it's not specified, what would I use for the following values? > > Driver::ghost_size = 5 > Coordinates::patch_boundary_size = 5 > Coordinates::additional_overlap_size = 3 > Coordinates::outer_boundary_size = 5
You would set "ghost_size = 4" and "patch_boundary_size = 4" and "outer_boundary_size = 4". You might be able to reduce "additional_overlap_size" as well. Carpet::prolongation_order_space = 5 It is up to you whether you reduce "prolongation_order_space". Probably not. -erik > Is there anything else I missed that I should change? -- Erik Schnetter <[email protected]> http://www.perimeterinstitute.ca/personal/eschnetter/ _______________________________________________ Users mailing list [email protected] http://lists.einsteintoolkit.org/mailman/listinfo/users
