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edhill |
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C $Header: /u/gcmpack/MITgcm/pkg/ex3/EX3_TOPOLOGY.h,v 1.3 2006/02/06 21:09:54 edhill Exp $ |
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C $Name: $ |
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C Tile topology data |
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C |
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C . N |
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C . C4 E3 C3 |
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C . +---------+ |
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C . | | |
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C . | | |
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C . W E4 | | E2 E |
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C . | | |
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C . | | |
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C . +---------+ |
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C . C1 E1 C2 |
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C . S |
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C |
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C ===== "Global" Topology ===== |
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C |
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C The following "global" variables define a tile topology and are |
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C invariant with respect to the model decomposition (that is, the |
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C sets of threads & MPI processes) used. |
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C |
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C ex3_affm :: The eight possible 2x2 affine matricies |
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C . for vector rotations and permutations |
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C . between two orthogonal, adjacent grids |
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C |
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C ex3_t_num :: total number of tiles |
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C ex3_t_iproc(t) :: MPI process ID for each tile |
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C ex3_t_ori(t) :: tile orientation (1=rh, -1=lh) |
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C ex3_t_nxy(t) :: number of X,Y cells in each tile |
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C |
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C ex3_f_ind(t) :: face index for each tile |
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C ex3_f_nxy(2,t) :: face number of X,Y cells |
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C ex3_f_oij(2,t) :: face i,j offsets (0 for face==tile) |
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C . |
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C ex3_e_n(t) :: number of E-neighbors |
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C ex3_e_iam(e,t) :: E-neighbor affine matrix index |
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C ex3_e_iopt(e,t) :: E-neighbor global tile index for the |
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C . opposing tile |
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C ex3_e_iope(e,t) :: E-neighbor edge index for the |
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C . opposing tile |
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C ex3_e_dat(k,d,e,t) :: E-neighbor information for each tile |
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C . / 1 --> edge-alignment flag: |
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C . | 0 : seam is NOT along |
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C . | this direction |
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C . | 1,-1 : interior is +,- |
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C . | and use OLx,OLy |
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C . k = | -ow- : use width value |
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C . | from 3 below |
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C . | 2 --> first cell index or the |
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C . | abutting *inside* cell |
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C . | 3 --> last cell index or the |
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C . | exchange width as a |
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C . \ distance and direction |
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C . d = 1,2 --> i,j directions |
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C . e = E-neighbor index |
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C . t = tile index |
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C |
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C ex3_c_n(4,t) :: number of C-neighbors at each corner |
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C ex3_c_ind(k,4,t) :: tile index for each C-neighbor |
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C ex3_c_num(k,4,t) :: tile corner number for each C-neighbor |
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C . 1 --> SW |
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C . 2 --> SE (per above diagram) |
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C . 3 --> NE |
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C . 4 --> NW |
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C ex3_c_ori(k,4,t) :: tile orientation for each C-neighbor |
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C |
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C |
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C ===== "Local" Topology ===== |
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C |
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C The following "local" variables are dependent upon the particular |
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C model decomposition (threads & MPI processes) used. |
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C |
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C ex3_p_ntile :: number of tiles associated with this |
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C . (eg. MPI) process |
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C ex3_p_itile(m) :: global indicies of the tiles associated |
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C . with this MPI process [myBxLo..myBxHi] |
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C |
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C ex3_e_iopt_il(e,t) :: tile locality flag: |
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C . -1: tile is not in local memory |
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C . 1: local tile index ("bibj") |
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INTEGER |
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& ex3_affm(4,8) |
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INTEGER |
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& ex3_t_num, |
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& ex3_t_iproc(EX3_MAX_TILES), |
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& ex3_t_ori(EX3_MAX_TILES), |
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& ex3_t_nxy(2,EX3_MAX_TILES), |
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& ex3_f_ind(EX3_MAX_TILES), |
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& ex3_f_nxy(2,EX3_MAX_TILES), |
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& ex3_f_oij(2,EX3_MAX_TILES), |
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& ex3_e_n(EX3_MAX_TILES), |
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& ex3_e_iam(EX3_MAX_E_NBS,EX3_MAX_TILES), |
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& ex3_e_iopt(EX3_MAX_E_NBS,EX3_MAX_TILES), |
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& ex3_e_iope(EX3_MAX_E_NBS,EX3_MAX_TILES), |
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& ex3_e_dat(3,2,EX3_MAX_E_NBS,EX3_MAX_TILES), |
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& ex3_c_n(4,EX3_MAX_TILES), |
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& ex3_c_ind(EX3_MAX_C_NBS,4,EX3_MAX_TILES), |
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& ex3_c_num(EX3_MAX_C_NBS,4,EX3_MAX_TILES), |
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& ex3_c_ori(EX3_MAX_C_NBS,4,EX3_MAX_TILES) |
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COMMON / EX3_TOPO_GLOBAL / |
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& ex3_affm, |
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& ex3_t_num, |
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& ex3_t_iproc, |
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& ex3_t_ori, |
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& ex3_t_nxy, |
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& ex3_f_ind, |
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& ex3_f_nxy, |
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& ex3_f_oij, |
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& ex3_e_n, |
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& ex3_e_iam, |
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& ex3_e_iopt, |
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& ex3_e_iope, |
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& ex3_e_dat, |
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& ex3_c_n, |
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& ex3_c_ind, |
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& ex3_c_num, |
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& ex3_c_ori |
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INTEGER |
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& ex3_p_ntile, |
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& ex3_p_itile(EX3_MAX_TILES), |
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& ex3_e_iopt_il(EX3_MAX_E_NBS,EX3_MAX_TILES) |
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COMMON / EX3_TOPO_LOCAL / |
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& ex3_p_ntile, |
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& ex3_p_itile, |
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& ex3_e_iopt_il |
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CEH3 ;;; Local Variables: *** |
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CEH3 ;;; mode:fortran *** |
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CEH3 ;;; End: *** |
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