| 1 |
C $Header: /u/gcmpack/MITgcm/model/inc/CG2D.h,v 1.14 2006/12/05 05:16:30 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
CBOP |
| 5 |
C !ROUTINE: CG2D.h |
| 6 |
C !INTERFACE: |
| 7 |
C include "CG2D.h" |
| 8 |
C |
| 9 |
C !DESCRIPTION: |
| 10 |
C \bv |
| 11 |
C *==========================================================* |
| 12 |
C | CG2D.h |
| 13 |
C | o Two-dimensional conjugate gradient solver header. |
| 14 |
C *==========================================================* |
| 15 |
C | Internal (private) data structures. |
| 16 |
C *==========================================================* |
| 17 |
C \ev |
| 18 |
CEOP |
| 19 |
|
| 20 |
C-- COMMON /CG2D_I_L/ cg2dNormaliseRHS |
| 21 |
C cg2dNormaliseRHS :: flag set to TRUE if normalise RHS in the Solver |
| 22 |
COMMON /CG2D_I_L/ cg2dNormaliseRHS |
| 23 |
LOGICAL cg2dNormaliseRHS |
| 24 |
|
| 25 |
C-- COMMON /CG2D_R/ DEL**2 Laplacian operators |
| 26 |
C aW2d :: East-west operator. |
| 27 |
C aS2d :: North-south operator. |
| 28 |
C aC2d :: 2D operator main diagonal term. |
| 29 |
C pW :: East-west off-diagonal term of preconditioner. |
| 30 |
C pS :: North-south off-diagonal term of preconditioner. |
| 31 |
C pC :: Main diagonal term of preconditioner. |
| 32 |
C cg2dNorm :: A matrix normalisation factor. |
| 33 |
C cg2dTolerance :: cg2d solver Tolerance (solver unit = m2/s2 or no unit, |
| 34 |
C depending on cg2dNormaliseRHS) |
| 35 |
COMMON /CG2D_I_R/ |
| 36 |
& aW2d, aS2d, aC2d, |
| 37 |
& pW, pS, pC, |
| 38 |
& cg2dNorm, cg2dTolerance |
| 39 |
_RS aW2d (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 40 |
_RS aS2d (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 41 |
_RS aC2d (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 42 |
_RS pW (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 43 |
_RS pS (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 44 |
_RS pC (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 45 |
_RL cg2dNorm, cg2dTolerance |
| 46 |
|
| 47 |
C-- COMMON /CG2D_I_WK_R/ Work array common block |
| 48 |
C cg2d_q :: Intermediate matrix-vector product term |
| 49 |
C cg2d_r :: *same* |
| 50 |
C cg2d_s :: *same* |
| 51 |
COMMON /CG2D_I_WK_R/ |
| 52 |
& cg2d_q, cg2d_r, cg2d_s |
| 53 |
_RL cg2d_q(1-1:sNx+1,1-1:sNy+1,nSx,nSy) |
| 54 |
#ifdef ALLOW_CG2D_NSA |
| 55 |
_RL cg2d_r(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 56 |
_RL cg2d_s(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
| 57 |
#else /* ALLOW_CG2D_NSA */ |
| 58 |
_RL cg2d_r(1-1:sNx+1,1-1:sNy+1,nSx,nSy) |
| 59 |
_RL cg2d_s(1-1:sNx+1,1-1:sNy+1,nSx,nSy) |
| 60 |
#endif /* ALLOW_CG2D_NSA */ |
| 61 |
|
| 62 |
#ifdef ALLOW_CG2D_NSA |
| 63 |
C-- COMMON /CG2D_I_WK_R2/ extra work array common block |
| 64 |
C cg2d_z :: Intermediate matrix-vector product term |
| 65 |
C :: reduces the number of recomputation in adjoint mode |
| 66 |
C :: this field is superfluous if your cg2d is self-adjoint. |
| 67 |
COMMON /CG2D_I_WK_R2/ cg2d_z |
| 68 |
_RL cg2d_z(1-1:sNx+1,1-1:sNy+1,nSx,nSy) |
| 69 |
#endif /* ALLOW_CG2D_NSA */ |
Parent Directory
| 
Revision Log
| 
Revision Graph