Gridding and Load Balancing

The following inputs must be preceded by “amr” and determine how we create the grids and how often we regrid.

Parameter	Description	Type	Default
regrid_int	How often to regrid (in number of steps at level 0) if regrid_int = -1 then no regridding will occur	Int	-1
max_grid_size_x	Maximum number of cells at level 0 in each grid in x-direction	Int	32
max_grid_size_y	Maximum number of cells at level 0 in each grid in y-direction	Int	32
max_grid_size_z	Maximum number of cells at level 0 in each grid in z-direction	Int	32
blocking_factor_x	Each grid must be divisible by blocking_factor_x in x-direction (must be 1 or power of 2)	Int	8
blocking_factor_y	Each grid must be divisible by blocking_factor_y in y-direction (must be 1 or power of 2)	Int	8
blocking_factor_z	Each grid must be divisible by blocking_factor_z in z-direction (must be 1 or power of 2)	Int	8
refine_grid_layout	Split grids in half until the number of grids is no less than the number of procs. (Will be overridden if refine_grid_layout_[x,y,z] is specified)	Bool	true
refine_grid_layout_x	Allow grids to be split in the x-dimension when refining the layout. (1 to allow or 0 to disallow)	Int	1
refine_grid_layout_y	Allow grids to be split in the y-dimension when refining the layout. (1 to allow or 0 to disallow)	Int	1
refine_grid_layout_z	Allow grids to be split in the z-dimension when refining the layout. (1 to allow or 0 to disallow)	Int	1

The following inputs must be preceded by “particles”.

Parameter	Description	Type	Default
max_grid_size_x	Maximum number of cells at level 0 in each grid in x-direction for grids in the ParticleBoxArray if dual_grid is true	Int	32
max_grid_size_y	Maximum number of cells at level 0 in each grid in y-direction for grids in the ParticleBoxArray if dual_grid is true	Int	32
max_grid_size_z	Maximum number of cells at level 0 in each grid in z-direction for grids in the ParticleBoxArray if dual_grid is true.	Int	32