api.Utils Namespace Reference

Functions
	real_mesh_size_and_level (prescribed_h, domain_size)
	Returns the real mesh size plus the level used.
	compute_regular_mesh_construction_grid_construction_sweeps (level)
	Determine after which step to split.

Function Documentation

compute_regular_mesh_construction_grid_construction_sweeps()

api.Utils.compute_regular_mesh_construction_grid_construction_sweeps

(

level

)

Determine after which step to split.

This routine is given the level of a mesh and then determines how many mesh construction sweeps Peano will need to get to this level. Usually, people use this information to determine when to issue split instructions. The routine is typically used with the second argument returned by real_mesh_size_and_level().

The calculation is close to trivial: As Peano realises a strict flag-then-refine paradigm, it needs two mesh traversals to add a completely new mesh level to a spacetree grid. The first one flags all the fine grid cells, the second one then does the actual refinement.

When we have just completed the very last refinement, we have to wait for one more step to ensure that all the stats are

Definition at line 31 of file Utils.py.

real_mesh_size_and_level()

api.Utils.real_mesh_size_and_level	(		prescribed_h,
			domain_size
	)

Returns the real mesh size plus the level used.

Peano uses three-partitioning. That is, it will neve be able to match given refinement instructions exactly. All it can do is to approximate them.

This routine is a copy of exaparty.api.Project.real_mesh_size(), but I didn't want to have dependencies between the two packages, i.e. exaparty and the load balancing. Therefore, copying seems to be appropriate.

Return a tuple of mesh size and mesh levels

Definition at line 5 of file Utils.py.