| 26 |
C \============================================================/ |
C \============================================================/ |
| 27 |
IMPLICIT NONE |
IMPLICIT NONE |
| 28 |
|
|
|
C === Global variables === |
|
| 29 |
#include "SIZE.h" |
#include "SIZE.h" |
| 30 |
#include "EEPARAMS.h" |
#include "EEPARAMS.h" |
| 31 |
#include "PARAMS.h" |
#include "PARAMS.h" |
| 32 |
#include "STREAMICE.h" |
#include "STREAMICE.h" |
| 33 |
#include "STREAMICE_CG.h" |
#include "STREAMICE_CG.h" |
| 34 |
|
|
| 35 |
|
|
| 36 |
|
|
| 37 |
|
#ifdef ALLOW_PETSC |
| 38 |
|
#include "finclude/petsc.h" |
| 39 |
|
! UNCOMMENT IF V3.0 |
| 40 |
|
!#include "finclude/petscvec.h" |
| 41 |
|
!#include "finclude/petscmat.h" |
| 42 |
|
!#include "finclude/petscksp.h" |
| 43 |
|
!#include "finclude/petscpc.h" |
| 44 |
|
#endif |
| 45 |
|
C === Global variables === |
| 46 |
|
|
| 47 |
|
|
| 48 |
C !INPUT/OUTPUT ARGUMENTS |
C !INPUT/OUTPUT ARGUMENTS |
| 49 |
C cg_Uin, cg_Vin - input and output velocities |
C cg_Uin, cg_Vin - input and output velocities |
| 67 |
_RL dot_p1, dot_p2, alpha_k, beta_k, resid, resid_0 |
_RL dot_p1, dot_p2, alpha_k, beta_k, resid, resid_0 |
| 68 |
_RL dot_p1_tile (nSx,nSy) |
_RL dot_p1_tile (nSx,nSy) |
| 69 |
_RL dot_p2_tile (nSx,nSy) |
_RL dot_p2_tile (nSx,nSy) |
| 70 |
|
CHARACTER*(MAX_LEN_MBUF) msgBuf |
| 71 |
|
|
| 72 |
|
|
| 73 |
|
#ifdef ALLOW_PETSC |
| 74 |
|
INTEGER indices(2*(snx*nsx*sny*nsy)) |
| 75 |
|
INTEGER n_dofs_cum_sum (0:nPx*nPy-1), idx(1) |
| 76 |
|
_RL rhs_values(2*(snx*nsx*sny*nsy)) |
| 77 |
|
_RL solution_values(2*(snx*nsx*sny*nsy)) |
| 78 |
|
! _RL mat_values (2*Nx*Ny,2*(snx*nsx*sny*nsy)) |
| 79 |
|
_RL mat_values (18,1), mat_val_return(1) |
| 80 |
|
INTEGER indices_col(18) |
| 81 |
|
INTEGER local_dofs, global_dofs, dof_index, dof_index_col |
| 82 |
|
INTEGER local_offset |
| 83 |
|
Mat matrix |
| 84 |
|
KSP ksp |
| 85 |
|
PC pc |
| 86 |
|
Vec rhs |
| 87 |
|
Vec solution |
| 88 |
|
PetscErrorCode ierr |
| 89 |
|
#ifdef ALLOW_USE_MPI |
| 90 |
|
integer mpiRC, mpiMyWid |
| 91 |
|
#endif |
| 92 |
|
#endif |
| 93 |
|
|
|
iters = streamice_max_cg_iter |
|
| 94 |
|
|
| 95 |
#ifdef ALLOW_STREAMICE |
#ifdef ALLOW_STREAMICE |
| 96 |
|
|
| 97 |
|
|
| 98 |
|
|
| 99 |
|
CALL TIMER_START ('STREAMICE_CG_SOLVE',myThid) |
| 100 |
|
#ifndef STREAMICE_SERIAL_TRISOLVE |
| 101 |
|
|
| 102 |
|
#ifdef ALLOW_PETSC |
| 103 |
|
|
| 104 |
|
#ifdef ALLOW_USE_MPI |
| 105 |
|
|
| 106 |
|
|
| 107 |
|
CALL MPI_COMM_RANK( MPI_COMM_WORLD, mpiMyWId, mpiRC ) |
| 108 |
|
local_dofs = n_dofs_process (mpiMyWid) |
| 109 |
|
global_dofs = 0 |
| 110 |
|
|
| 111 |
|
n_dofs_cum_sum(0) = 0 |
| 112 |
|
DO i=0,nPx*nPy-1 |
| 113 |
|
global_dofs = global_dofs + n_dofs_process (i) |
| 114 |
|
if (i.ge.1) THEN |
| 115 |
|
n_dofs_cum_sum(i) = n_dofs_cum_sum(i-1)+ |
| 116 |
|
& n_dofs_process(i-1) |
| 117 |
|
endif |
| 118 |
|
ENDDO |
| 119 |
|
local_offset = n_dofs_cum_sum(mpimywid) |
| 120 |
|
|
| 121 |
|
#else |
| 122 |
|
|
| 123 |
|
local_dofs = n_dofs_process (0) |
| 124 |
|
global_dofs = local_dofs |
| 125 |
|
local_offset = 0 |
| 126 |
|
|
| 127 |
|
#endif |
| 128 |
|
|
| 129 |
|
! call petscInitialize(PETSC_NULL_CHARACTER,ierr) |
| 130 |
|
|
| 131 |
|
!---------------------- |
| 132 |
|
|
| 133 |
|
call VecCreate(PETSC_COMM_WORLD, rhs, ierr) |
| 134 |
|
call VecSetSizes(rhs, local_dofs, global_dofs, ierr) |
| 135 |
|
call VecSetType(rhs, VECMPI, ierr) |
| 136 |
|
|
| 137 |
|
call VecCreate(PETSC_COMM_WORLD, solution, ierr) |
| 138 |
|
call VecSetSizes(solution, local_dofs, global_dofs, ierr) |
| 139 |
|
call VecSetType(solution, VECMPI, ierr) |
| 140 |
|
|
| 141 |
|
do i=1,local_dofs |
| 142 |
|
indices(i) = i-1 + local_offset |
| 143 |
|
end do |
| 144 |
|
do i=1,2*nSx*nSy*sNx*sNy |
| 145 |
|
rhs_values (i) = 0. _d 0 |
| 146 |
|
solution_values (i) = 0. _d 0 |
| 147 |
|
enddo |
| 148 |
|
|
| 149 |
|
! gather rhs and initial guess values to populate petsc vectors |
| 150 |
|
|
| 151 |
|
DO bj = myByLo(myThid), myByHi(myThid) |
| 152 |
|
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 153 |
|
DO j=1,sNy |
| 154 |
|
DO i=1,sNx |
| 155 |
|
|
| 156 |
|
dof_index = INT(streamice_petsc_dofs_u(i,j,bi,bj)) |
| 157 |
|
& - local_offset |
| 158 |
|
|
| 159 |
|
if (dof_index.ge.0) THEN |
| 160 |
|
|
| 161 |
|
rhs_values(dof_index+1) = cg_Bu(i,j,bi,bj) |
| 162 |
|
solution_values(dof_index+1) = cg_Uin(i,j,bi,bj) |
| 163 |
|
|
| 164 |
|
endif |
| 165 |
|
|
| 166 |
|
!--------------- |
| 167 |
|
|
| 168 |
|
dof_index = INT(streamice_petsc_dofs_v(i,j,bi,bj)) |
| 169 |
|
& - local_offset |
| 170 |
|
|
| 171 |
|
if (dof_index.ge.0) THEN |
| 172 |
|
|
| 173 |
|
rhs_values(dof_index+1) = cg_Bv(i,j,bi,bj) |
| 174 |
|
solution_values(dof_index+1) = cg_Vin(i,j,bi,bj) |
| 175 |
|
|
| 176 |
|
endif |
| 177 |
|
|
| 178 |
|
ENDDO |
| 179 |
|
ENDDO |
| 180 |
|
ENDDO |
| 181 |
|
ENDDO |
| 182 |
|
|
| 183 |
|
|
| 184 |
|
call VecSetValues(rhs, local_dofs, indices, rhs_values, |
| 185 |
|
& INSERT_VALUES, ierr) |
| 186 |
|
call VecAssemblyBegin(rhs, ierr) |
| 187 |
|
call VecAssemblyEnd(rhs, ierr) |
| 188 |
|
|
| 189 |
|
|
| 190 |
|
call VecSetValues(solution, local_dofs, indices, |
| 191 |
|
& solution_values, INSERT_VALUES, ierr) |
| 192 |
|
call VecAssemblyBegin(solution, ierr) |
| 193 |
|
call VecAssemblyEnd(solution, ierr) |
| 194 |
|
|
| 195 |
|
! IF USING v3.0 THEN |
| 196 |
|
! call MatCreateMPIAIJ (PETSC_COMM_WORLD, |
| 197 |
|
call MatCreateAIJ (PETSC_COMM_WORLD, |
| 198 |
|
& local_dofs, local_dofs, |
| 199 |
|
& global_dofs, global_dofs, |
| 200 |
|
& 18, PETSC_NULL_INTEGER, |
| 201 |
|
& 18, PETSC_NULL_INTEGER, |
| 202 |
|
& matrix, ierr) |
| 203 |
|
|
| 204 |
|
|
| 205 |
|
! populate petsc matrix |
| 206 |
|
|
| 207 |
|
DO bj = myByLo(myThid), myByHi(myThid) |
| 208 |
|
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 209 |
|
DO j=1,sNy |
| 210 |
|
DO i=1,sNx |
| 211 |
|
|
| 212 |
|
dof_index = INT(streamice_petsc_dofs_u(i,j,bi,bj)) |
| 213 |
|
! & - local_offset |
| 214 |
|
|
| 215 |
|
IF (dof_index .ge. 0) THEN |
| 216 |
|
|
| 217 |
|
DO k=1,18 |
| 218 |
|
indices_col(k) = 0 |
| 219 |
|
mat_values(k,1) = 0. _d 0 |
| 220 |
|
ENDDO |
| 221 |
|
k=0 |
| 222 |
|
|
| 223 |
|
DO coly=-1,1 |
| 224 |
|
DO colx=-1,1 |
| 225 |
|
|
| 226 |
|
dof_index_col = streamice_petsc_dofs_u(i+colx,j+coly,bi,bj) |
| 227 |
|
|
| 228 |
|
if (dof_index_col.ge.0) THEN |
| 229 |
|
! pscal = A_uu(i,j,bi,bj,colx,coly) |
| 230 |
|
! CALL MatSetValue (matrix,dof_index, dof_index_col, |
| 231 |
|
! & pscal,INSERT_VALUES,ierr) |
| 232 |
|
k=k+1 |
| 233 |
|
mat_values (k,1) = A_uu(i,j,bi,bj,colx,coly) |
| 234 |
|
indices_col (k) = dof_index_col |
| 235 |
|
endif |
| 236 |
|
|
| 237 |
|
dof_index_col = streamice_petsc_dofs_v(i+colx,j+coly,bi,bj) |
| 238 |
|
|
| 239 |
|
if (dof_index_col.ge.0) THEN |
| 240 |
|
! CALL MatSetValue (matrix,dof_index, dof_index_col, |
| 241 |
|
! & A_uv(i,j,bi,bj,colx,coly),INSERT_VALUES,ierr) |
| 242 |
|
k=k+1 |
| 243 |
|
mat_values (k,1) = A_uv(i,j,bi,bj,colx,coly) |
| 244 |
|
indices_col (k) = dof_index_col |
| 245 |
|
endif |
| 246 |
|
|
| 247 |
|
ENDDO |
| 248 |
|
ENDDO |
| 249 |
|
|
| 250 |
|
call matSetValues (matrix, 1, dof_index, k, indices_col, |
| 251 |
|
& mat_values,INSERT_VALUES,ierr) |
| 252 |
|
|
| 253 |
|
|
| 254 |
|
ENDIF |
| 255 |
|
|
| 256 |
|
! ---------------------------------------------- |
| 257 |
|
|
| 258 |
|
dof_index = INT(streamice_petsc_dofs_v(i,j,bi,bj)) |
| 259 |
|
! & - local_offset |
| 260 |
|
|
| 261 |
|
IF (dof_index .ge. 0) THEN |
| 262 |
|
|
| 263 |
|
DO k=1,18 |
| 264 |
|
indices_col(k) = 0 |
| 265 |
|
mat_values(k,1) = 0. _d 0 |
| 266 |
|
ENDDO |
| 267 |
|
k=0 |
| 268 |
|
|
| 269 |
|
DO coly=-1,1 |
| 270 |
|
DO colx=-1,1 |
| 271 |
|
|
| 272 |
|
dof_index_col = streamice_petsc_dofs_u(i+colx,j+coly,bi,bj) |
| 273 |
|
|
| 274 |
|
if (dof_index_col.ge.0) THEN |
| 275 |
|
! CALL MatSetValue (matrix,dof_index, dof_index_col, |
| 276 |
|
! & A_vu(i,j,bi,bj,colx,coly),INSERT_VALUES,ierr) |
| 277 |
|
k=k+1 |
| 278 |
|
mat_values (k,1) = A_vu(i,j,bi,bj,colx,coly) |
| 279 |
|
indices_col (k) = dof_index_col |
| 280 |
|
endif |
| 281 |
|
|
| 282 |
|
dof_index_col = streamice_petsc_dofs_v(i+colx,j+coly,bi,bj) |
| 283 |
|
|
| 284 |
|
if (dof_index_col.ge.0) THEN |
| 285 |
|
! CALL MatSetValue (matrix,dof_index, dof_index_col, |
| 286 |
|
! & A_vv(i,j,bi,bj,colx,coly),INSERT_VALUES,ierr) |
| 287 |
|
k=k+1 |
| 288 |
|
mat_values (k,1) = A_vv(i,j,bi,bj,colx,coly) |
| 289 |
|
indices_col (k) = dof_index_col |
| 290 |
|
endif |
| 291 |
|
|
| 292 |
|
ENDDO |
| 293 |
|
ENDDO |
| 294 |
|
|
| 295 |
|
call matSetValues (matrix, 1, dof_index, k, indices_col, |
| 296 |
|
& mat_values,INSERT_VALUES,ierr) |
| 297 |
|
ENDIF |
| 298 |
|
|
| 299 |
|
ENDDO |
| 300 |
|
ENDDO |
| 301 |
|
ENDDO |
| 302 |
|
ENDDO |
| 303 |
|
|
| 304 |
|
call MatAssemblyBegin(matrix,MAT_FINAL_ASSEMBLY,ierr) |
| 305 |
|
call MatAssemblyEnd(matrix,MAT_FINAL_ASSEMBLY,ierr) |
| 306 |
|
|
| 307 |
|
|
| 308 |
|
call KSPCreate(PETSC_COMM_WORLD, ksp, ierr) |
| 309 |
|
call KSPSetOperators(ksp, matrix, matrix, |
| 310 |
|
& DIFFERENT_NONZERO_PATTERN, ierr) |
| 311 |
|
|
| 312 |
|
SELECT CASE (PETSC_SOLVER_TYPE) |
| 313 |
|
CASE ('CG') |
| 314 |
|
PRINT *, "PETSC SOLVER: SELECTED CG" |
| 315 |
|
call KSPSetType(ksp, KSPCG, ierr) |
| 316 |
|
CASE ('GMRES') |
| 317 |
|
PRINT *, "PETSC SOLVER: SELECTED GMRES" |
| 318 |
|
call KSPSetType(ksp, KSPGMRES, ierr) |
| 319 |
|
CASE ('BICG') |
| 320 |
|
PRINT *, "PETSC SOLVER: SELECTED BICG" |
| 321 |
|
call KSPSetType(ksp, KSPBICG, ierr) |
| 322 |
|
CASE DEFAULT |
| 323 |
|
PRINT *, "PETSC SOLVER: SELECTED DEFAULT" |
| 324 |
|
call KSPSetType(ksp, KSPCG, ierr) |
| 325 |
|
END SELECT |
| 326 |
|
|
| 327 |
|
call KSPGetPC(ksp, pc, ierr) |
| 328 |
|
call KSPSetTolerances(ksp,tolerance, |
| 329 |
|
& PETSC_DEFAULT_DOUBLE_PRECISION, |
| 330 |
|
& PETSC_DEFAULT_DOUBLE_PRECISION, |
| 331 |
|
& streamice_max_cg_iter,ierr) |
| 332 |
|
|
| 333 |
|
SELECT CASE (PETSC_PRECOND_TYPE) |
| 334 |
|
CASE ('BLOCKJACOBI') |
| 335 |
|
PRINT *, "PETSC PRECOND: SELECTED BJACOBI" |
| 336 |
|
call PCSetType(pc, PCBJACOBI, ierr) |
| 337 |
|
CASE ('JACOBI') |
| 338 |
|
PRINT *, "PETSC PRECOND: SELECTED JACOBI" |
| 339 |
|
call PCSetType(pc, PCJACOBI, ierr) |
| 340 |
|
CASE ('ILU') |
| 341 |
|
PRINT *, "PETSC PRECOND: SELECTED ILU" |
| 342 |
|
call PCSetType(pc, PCILU, ierr) |
| 343 |
|
CASE DEFAULT |
| 344 |
|
PRINT *, "PETSC PRECOND: SELECTED DEFAULT" |
| 345 |
|
call PCSetType(pc, PCBJACOBI, ierr) |
| 346 |
|
END SELECT |
| 347 |
|
|
| 348 |
|
|
| 349 |
|
call KSPSolve(ksp, rhs, solution, ierr) |
| 350 |
|
call KSPGetIterationNumber(ksp,iters,ierr) |
| 351 |
|
|
| 352 |
|
call VecGetValues(solution,local_dofs,indices, |
| 353 |
|
& solution_values,ierr) |
| 354 |
|
|
| 355 |
|
DO bj = myByLo(myThid), myByHi(myThid) |
| 356 |
|
DO bi = myBxLo(myThid), myBxHi(myThid) |
| 357 |
|
DO j=1,sNy |
| 358 |
|
DO i=1,sNx |
| 359 |
|
|
| 360 |
|
dof_index = INT(streamice_petsc_dofs_u(i,j,bi,bj)) |
| 361 |
|
& - local_offset |
| 362 |
|
if (dof_index.ge.0) THEN |
| 363 |
|
cg_Uin(i,j,bi,bj) = solution_values(dof_index+1) |
| 364 |
|
endif |
| 365 |
|
|
| 366 |
|
dof_index = INT(streamice_petsc_dofs_v(i,j,bi,bj)) |
| 367 |
|
& - local_offset |
| 368 |
|
if (dof_index.ge.0) THEN |
| 369 |
|
cg_Vin(i,j,bi,bj) = solution_values(dof_index+1) |
| 370 |
|
endif |
| 371 |
|
|
| 372 |
|
ENDDO |
| 373 |
|
ENDDO |
| 374 |
|
ENDDO |
| 375 |
|
ENDDO |
| 376 |
|
|
| 377 |
|
|
| 378 |
|
|
| 379 |
|
#else /* ALLOW_PETSC */ |
| 380 |
|
|
| 381 |
|
|
| 382 |
|
iters = streamice_max_cg_iter |
| 383 |
conv_flag = 0 |
conv_flag = 0 |
| 384 |
|
|
| 385 |
|
|
| 469 |
CALL GLOBAL_SUM_TILE_RL( dot_p1_tile, dot_p1, myThid ) |
CALL GLOBAL_SUM_TILE_RL( dot_p1_tile, dot_p1, myThid ) |
| 470 |
resid_0 = sqrt(dot_p1) |
resid_0 = sqrt(dot_p1) |
| 471 |
|
|
| 472 |
|
WRITE(msgBuf,'(A,E14.7)') 'CONJ GRAD INIT RESID, ', |
| 473 |
|
& resid_0 |
| 474 |
|
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 475 |
|
& SQUEEZE_RIGHT , 1) |
| 476 |
|
|
| 477 |
C CCCCCCCCCCCCCCCCCCCC |
C CCCCCCCCCCCCCCCCCCCC |
| 478 |
|
|
| 479 |
DO bj = myByLo(myThid), myByHi(myThid) |
DO bj = myByLo(myThid), myByHi(myThid) |
| 517 |
|
|
| 518 |
c ! initially, b-grid data is valid up to 3 halo nodes out -- right? (check for MITgcm!!) |
c ! initially, b-grid data is valid up to 3 halo nodes out -- right? (check for MITgcm!!) |
| 519 |
|
|
| 520 |
print *, "BEGINNING MAIN CG LOOP" |
WRITE(msgBuf,'(A)') 'BEGINNING MAIN CG LOOP' |
| 521 |
|
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 522 |
|
& SQUEEZE_RIGHT , 1) |
| 523 |
|
|
| 524 |
! IF(STREAMICE_construct_matrix) CALL STREAMICE_CG_MAKE_A(myThid) |
! IF(STREAMICE_construct_matrix) CALL STREAMICE_CG_MAKE_A(myThid) |
| 525 |
|
|
| 768 |
! _EXCH_XY_RL( cg_Uin, myThid ) |
! _EXCH_XY_RL( cg_Uin, myThid ) |
| 769 |
! _EXCH_XY_RL( cg_Vin, myThid ) |
! _EXCH_XY_RL( cg_Vin, myThid ) |
| 770 |
|
|
| 771 |
#endif |
#endif /* ifndef ALLOW_PETSC */ |
|
RETURN |
|
|
END |
|
| 772 |
|
|
| 773 |
|
#else /* STREAMICE_SERIAL_TRISOLVE */ |
| 774 |
|
|
| 775 |
|
CALL STREAMICE_TRIDIAG_SOLVE( |
| 776 |
|
U cg_Uin, ! x-velocities |
| 777 |
|
U cg_Vin, |
| 778 |
|
U cg_Bu, ! force in x dir |
| 779 |
|
I A_uu, ! section of matrix that multiplies u and projects on u |
| 780 |
|
I STREAMICE_umask, |
| 781 |
|
I myThid ) |
| 782 |
|
|
| 783 |
|
#endif |
| 784 |
|
|
| 785 |
|
CALL TIMER_STOP ('STREAMICE_CG_SOLVE',myThid) |
| 786 |
|
|
| 787 |
|
|
| 788 |
|
#endif |
| 789 |
|
RETURN |
| 790 |
|
END |