README.md

Small-scale Decomposition Map Files for Testing

• Three small-scale cases of E3SM decomposition maps are available for testing. They are F, G, and I cases. The decomposition maps were generated from E3SM runs on 16 MPI processes.

  • F case uses 3 decomposition maps.
    • File map_f_case_16p.nc is in NetCDF classic CDF-5 format
    • File map_f_case_16p.h5 is in HDF5 format
    • File map_f_case_16p.nc4 is in NetCDF4 format
    • File map_f_case_16p.bp is in ADIOS BP format
  • G case uses 6 decomposition maps.
    • File map_g_case_16p.nc is in NetCDF classic CDF-5 format
    • File map_g_case_16p.h5 is in HDF5 format
    • File map_g_case_16p.nc4 is in NetCDF4 format
    • File map_g_case_16p.bp is in ADIOS BP format
  • I case uses 5 decomposition maps.
    • File map_i_case_16p.nc is in NetCDF classic CDF-5 format
    • File map_i_case_16p.h5 is in HDF5 format
    • File map_i_case_16p.nc4 is in NetCDF4 format
    • File map_i_case_16p.bp is in ADIOS BP format

• Metadata (file header) of the three cases are available in text format.

  • F case produces 2 output files, namely h0 and h1.
    • File f_case_h0.txt
    • File f_case_h1.txt
  • G case produces 1 output file
    • File g_case_hist.txt
  • I case produces 2 output files, namely h0 and h1.
    • File i_case_h0.txt
    • File i_case_h1.txt

Dimensions in Decomposition Maps

	F case	G case	I case
D1	ncol	nCells	lat x lon
D2	ncol	nEdges	(levgrnd or levdcmp) x lat x lon
D3	lev x ncol	nCells x nVertLevels	levlak x lat x lon
D4		nEdges x nVertLevels	ltype x lat x lon
D5		nVertices x nVertLevels	natpft x lat x lon
D6		nCells x nVertLevelsP1

Dimension sizes of decomposition maps available in this folder

map_f_case_16p	map_g_case_16p	map_i_case_16p
ncol = 866	nCells = 285	lat = 96
lev = 72	nEdges = 879	lon = 144
	nVertLevels = 100	levgrnd = 15
	nVertices = 593	levdcmp = 15
	nVertLevelsP1 = 101	levlak = 10
		ltype = 9
		natpft = 17

Decomposition Map's dimension sizes used in production runs (standard resolution)

F case 21600p	G case 9600p	I case 1344p
ncol = 777602	nCells = 3693225	lat = 360
lev = 72	nEdges = 11135652	lon = 720
	nVertLevels = 80	levgrnd = 15
	nVertices = 7441216	levdcmp = 15
	nVertLevelsP1 = 81	levlak = 10
		ltype = 9
		natpft = 17

• For information about the statistics of decomposition maps and variables that are partitioned using the maps, readers are referred to ../docs/variables.md.