Return all debug flags that do not entail user interaction (such as key presses or console output).
When computing on GPU hardware, the Discretization operates on fields that are not represented by numpy arrays. Vector kinds make this explicit. Every discretization is guaranteed to support converting its preferred vector kind, given by Discretization.compute_kind, to the kind “numpy”.
The array kind that this discretization can evaluate operators on.
A typical exponential-falloff mode response filter function.
See description in Section 5.6.1 of Hesthaven/Warburton.
Construct the filter function.
The amplification factor of the lowest-order (constant) mode is always 1.