1 |
C $Header: /u/gcmpack/MITgcm/pkg/streamice/streamice_cg_solve_petsc.F,v 1.4 2015/02/23 14:30:30 dgoldberg Exp $ |
2 |
C $Name: $ |
3 |
|
4 |
#include "STREAMICE_OPTIONS.h" |
5 |
|
6 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
7 |
|
8 |
CBOP |
9 |
SUBROUTINE STREAMICE_CG_SOLVE_PETSC( |
10 |
U cg_Uin, ! x-velocities |
11 |
U cg_Vin, ! y-velocities |
12 |
I cg_Bu, ! force in x dir |
13 |
I cg_Bv, ! force in y dir |
14 |
I A_uu, ! section of matrix that multiplies u and projects on u |
15 |
I A_uv, ! section of matrix that multiplies v and projects on u |
16 |
I A_vu, ! section of matrix that multiplies u and projects on v |
17 |
I A_vv, ! section of matrix that multiplies v and projects on v |
18 |
I tolerance, |
19 |
O iters, |
20 |
I maxIter, |
21 |
I myThid ) |
22 |
|
23 |
C /============================================================\ |
24 |
C | SUBROUTINE | |
25 |
C | o | |
26 |
C |============================================================| |
27 |
C | | |
28 |
C \============================================================/ |
29 |
IMPLICIT NONE |
30 |
|
31 |
#include "SIZE.h" |
32 |
#include "EEPARAMS.h" |
33 |
#include "PARAMS.h" |
34 |
#include "STREAMICE.h" |
35 |
#include "STREAMICE_CG.h" |
36 |
|
37 |
|
38 |
|
39 |
#ifdef ALLOW_PETSC |
40 |
#include "finclude/petsc.h" |
41 |
#include "STREAMICE_PETSC.h" |
42 |
! UNCOMMENT IF V3.0 |
43 |
!#include "finclude/petscvec.h" |
44 |
!#include "finclude/petscmat.h" |
45 |
!#include "finclude/petscksp.h" |
46 |
!#include "finclude/petscpc.h" |
47 |
#endif |
48 |
C === Global variables === |
49 |
|
50 |
|
51 |
C !INPUT/OUTPUT ARGUMENTS |
52 |
C cg_Uin, cg_Vin - input and output velocities |
53 |
C cg_Bu, cg_Bv - driving stress |
54 |
INTEGER myThid |
55 |
INTEGER iters, maxiter |
56 |
_RL tolerance |
57 |
_RL cg_Uin (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
58 |
_RL cg_Vin (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
59 |
_RL cg_Bu (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
60 |
_RL cg_Bv (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
61 |
_RL |
62 |
& A_uu (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy,-1:1,-1:1), |
63 |
& A_vu (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy,-1:1,-1:1), |
64 |
& A_uv (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy,-1:1,-1:1), |
65 |
& A_vv (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy,-1:1,-1:1) |
66 |
|
67 |
#if (defined (ALLOW_OPENAD) && defined (ALLOW_STREAMICE_OAD_FP)) |
68 |
LOGICAL create_mat, destroy_mat |
69 |
#endif |
70 |
|
71 |
C LOCAL VARIABLES |
72 |
INTEGER i, j, bi, bj, cg_halo, conv_flag |
73 |
INTEGER iter, is, js, ie, je, colx, coly, k |
74 |
_RL dot_p1, dot_p2, alpha_k, beta_k, resid, resid_0 |
75 |
_RL dot_p1_tile (nSx,nSy) |
76 |
_RL dot_p2_tile (nSx,nSy) |
77 |
CHARACTER*(MAX_LEN_MBUF) msgBuf |
78 |
|
79 |
|
80 |
#ifdef ALLOW_PETSC |
81 |
INTEGER indices(2*(snx*nsx*sny*nsy)) |
82 |
INTEGER n_dofs_cum_sum (0:nPx*nPy-1), idx(1) |
83 |
_RL rhs_values(2*(snx*nsx*sny*nsy)) |
84 |
_RL solution_values(2*(snx*nsx*sny*nsy)) |
85 |
! _RL mat_values (2*Nx*Ny,2*(snx*nsx*sny*nsy)) |
86 |
_RL mat_values (18,1), mat_val_return(1) |
87 |
INTEGER indices_col(18) |
88 |
INTEGER local_dofs, global_dofs, dof_index, dof_index_col |
89 |
INTEGER local_offset |
90 |
! Mat matrix |
91 |
! KSP ksp |
92 |
! PC pc |
93 |
PC subpc |
94 |
KSP subksp(1) |
95 |
Vec rhs |
96 |
Vec solution |
97 |
PetscErrorCode ierr |
98 |
#ifdef ALLOW_USE_MPI |
99 |
integer mpiRC, mpiMyWid |
100 |
#endif |
101 |
#endif |
102 |
|
103 |
|
104 |
#ifdef ALLOW_STREAMICE |
105 |
|
106 |
|
107 |
|
108 |
|
109 |
#ifdef ALLOW_PETSC |
110 |
|
111 |
#ifdef ALLOW_USE_MPI |
112 |
|
113 |
|
114 |
CALL MPI_COMM_RANK( MPI_COMM_WORLD, mpiMyWId, mpiRC ) |
115 |
local_dofs = n_dofs_process (mpiMyWid) |
116 |
global_dofs = 0 |
117 |
|
118 |
n_dofs_cum_sum(0) = 0 |
119 |
DO i=0,nPx*nPy-1 |
120 |
global_dofs = global_dofs + n_dofs_process (i) |
121 |
if (i.ge.1) THEN |
122 |
n_dofs_cum_sum(i) = n_dofs_cum_sum(i-1)+ |
123 |
& n_dofs_process(i-1) |
124 |
endif |
125 |
ENDDO |
126 |
local_offset = n_dofs_cum_sum(mpimywid) |
127 |
|
128 |
#else |
129 |
|
130 |
local_dofs = n_dofs_process (0) |
131 |
global_dofs = local_dofs |
132 |
local_offset = 0 |
133 |
|
134 |
#endif |
135 |
|
136 |
! call petscInitialize(PETSC_NULL_CHARACTER,ierr) |
137 |
|
138 |
!---------------------- |
139 |
|
140 |
CALL TIMER_START ('STREAMICE_PETSC_SETUP',myThid) |
141 |
|
142 |
call VecCreate(PETSC_COMM_WORLD, rhs, ierr) |
143 |
call VecSetSizes(rhs, local_dofs, global_dofs, ierr) |
144 |
call VecSetType(rhs, VECMPI, ierr) |
145 |
|
146 |
call VecCreate(PETSC_COMM_WORLD, solution, ierr) |
147 |
call VecSetSizes(solution, local_dofs, global_dofs, ierr) |
148 |
call VecSetType(solution, VECMPI, ierr) |
149 |
|
150 |
do i=1,local_dofs |
151 |
indices(i) = i-1 + local_offset |
152 |
end do |
153 |
do i=1,2*nSx*nSy*sNx*sNy |
154 |
rhs_values (i) = 0. _d 0 |
155 |
solution_values (i) = 0. _d 0 |
156 |
enddo |
157 |
|
158 |
! gather rhs and initial guess values to populate petsc vectors |
159 |
|
160 |
DO bj = myByLo(myThid), myByHi(myThid) |
161 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
162 |
DO j=1,sNy |
163 |
DO i=1,sNx |
164 |
|
165 |
dof_index = INT(streamice_petsc_dofs_u(i,j,bi,bj)) |
166 |
& - local_offset |
167 |
|
168 |
if (dof_index.ge.0) THEN |
169 |
|
170 |
rhs_values(dof_index+1) = cg_Bu(i,j,bi,bj) |
171 |
solution_values(dof_index+1) = cg_Uin(i,j,bi,bj) |
172 |
|
173 |
endif |
174 |
|
175 |
!--------------- |
176 |
|
177 |
dof_index = INT(streamice_petsc_dofs_v(i,j,bi,bj)) |
178 |
& - local_offset |
179 |
|
180 |
if (dof_index.ge.0) THEN |
181 |
|
182 |
rhs_values(dof_index+1) = cg_Bv(i,j,bi,bj) |
183 |
solution_values(dof_index+1) = cg_Vin(i,j,bi,bj) |
184 |
|
185 |
endif |
186 |
|
187 |
ENDDO |
188 |
ENDDO |
189 |
ENDDO |
190 |
ENDDO |
191 |
|
192 |
|
193 |
call VecSetValues(rhs, local_dofs, indices, rhs_values, |
194 |
& INSERT_VALUES, ierr) |
195 |
call VecAssemblyBegin(rhs, ierr) |
196 |
call VecAssemblyEnd(rhs, ierr) |
197 |
|
198 |
|
199 |
call VecSetValues(solution, local_dofs, indices, |
200 |
& solution_values, INSERT_VALUES, ierr) |
201 |
call VecAssemblyBegin(solution, ierr) |
202 |
call VecAssemblyEnd(solution, ierr) |
203 |
|
204 |
|
205 |
#if (defined (ALLOW_OPENAD) && defined (ALLOW_STREAMICE_OAD_FP)) |
206 |
#ifdef ALLOW_PETSC |
207 |
if (STREAMICE_need2createmat) then |
208 |
#endif |
209 |
#endif |
210 |
|
211 |
! IF USING v3.0 THEN |
212 |
! call MatCreateMPIAIJ (PETSC_COMM_WORLD, |
213 |
call MatCreateAIJ (PETSC_COMM_WORLD, |
214 |
& local_dofs, local_dofs, |
215 |
& global_dofs, global_dofs, |
216 |
& 18, PETSC_NULL_INTEGER, |
217 |
& 18, PETSC_NULL_INTEGER, |
218 |
& matrix, ierr) |
219 |
|
220 |
|
221 |
! populate petsc matrix |
222 |
|
223 |
DO bj = myByLo(myThid), myByHi(myThid) |
224 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
225 |
DO j=1,sNy |
226 |
DO i=1,sNx |
227 |
|
228 |
dof_index = INT(streamice_petsc_dofs_u(i,j,bi,bj)) |
229 |
! & - local_offset |
230 |
|
231 |
IF (dof_index .ge. 0) THEN |
232 |
|
233 |
DO k=1,18 |
234 |
indices_col(k) = 0 |
235 |
mat_values(k,1) = 0. _d 0 |
236 |
ENDDO |
237 |
k=0 |
238 |
|
239 |
DO coly=-1,1 |
240 |
DO colx=-1,1 |
241 |
|
242 |
dof_index_col = streamice_petsc_dofs_u(i+colx,j+coly,bi,bj) |
243 |
|
244 |
if (dof_index_col.ge.0) THEN |
245 |
! pscal = A_uu(i,j,bi,bj,colx,coly) |
246 |
! CALL MatSetValue (matrix,dof_index, dof_index_col, |
247 |
! & pscal,INSERT_VALUES,ierr) |
248 |
k=k+1 |
249 |
mat_values (k,1) = A_uu(i,j,bi,bj,colx,coly) |
250 |
indices_col (k) = dof_index_col |
251 |
endif |
252 |
|
253 |
dof_index_col = streamice_petsc_dofs_v(i+colx,j+coly,bi,bj) |
254 |
|
255 |
if (dof_index_col.ge.0) THEN |
256 |
! CALL MatSetValue (matrix,dof_index, dof_index_col, |
257 |
! & A_uv(i,j,bi,bj,colx,coly),INSERT_VALUES,ierr) |
258 |
k=k+1 |
259 |
mat_values (k,1) = A_uv(i,j,bi,bj,colx,coly) |
260 |
indices_col (k) = dof_index_col |
261 |
endif |
262 |
|
263 |
ENDDO |
264 |
ENDDO |
265 |
|
266 |
call matSetValues (matrix, 1, dof_index, k, indices_col, |
267 |
& mat_values,INSERT_VALUES,ierr) |
268 |
|
269 |
|
270 |
ENDIF |
271 |
|
272 |
! ---------------------------------------------- |
273 |
|
274 |
dof_index = INT(streamice_petsc_dofs_v(i,j,bi,bj)) |
275 |
! & - local_offset |
276 |
|
277 |
IF (dof_index .ge. 0) THEN |
278 |
|
279 |
DO k=1,18 |
280 |
indices_col(k) = 0 |
281 |
mat_values(k,1) = 0. _d 0 |
282 |
ENDDO |
283 |
k=0 |
284 |
|
285 |
DO coly=-1,1 |
286 |
DO colx=-1,1 |
287 |
|
288 |
dof_index_col = streamice_petsc_dofs_u(i+colx,j+coly,bi,bj) |
289 |
|
290 |
if (dof_index_col.ge.0) THEN |
291 |
! CALL MatSetValue (matrix,dof_index, dof_index_col, |
292 |
! & A_vu(i,j,bi,bj,colx,coly),INSERT_VALUES,ierr) |
293 |
k=k+1 |
294 |
mat_values (k,1) = A_vu(i,j,bi,bj,colx,coly) |
295 |
indices_col (k) = dof_index_col |
296 |
endif |
297 |
|
298 |
dof_index_col = streamice_petsc_dofs_v(i+colx,j+coly,bi,bj) |
299 |
|
300 |
if (dof_index_col.ge.0) THEN |
301 |
! CALL MatSetValue (matrix,dof_index, dof_index_col, |
302 |
! & A_vv(i,j,bi,bj,colx,coly),INSERT_VALUES,ierr) |
303 |
k=k+1 |
304 |
mat_values (k,1) = A_vv(i,j,bi,bj,colx,coly) |
305 |
indices_col (k) = dof_index_col |
306 |
endif |
307 |
|
308 |
ENDDO |
309 |
ENDDO |
310 |
|
311 |
call matSetValues (matrix, 1, dof_index, k, indices_col, |
312 |
& mat_values,INSERT_VALUES,ierr) |
313 |
ENDIF |
314 |
|
315 |
ENDDO |
316 |
ENDDO |
317 |
ENDDO |
318 |
ENDDO |
319 |
|
320 |
call MatAssemblyBegin(matrix,MAT_FINAL_ASSEMBLY,ierr) |
321 |
call MatAssemblyEnd(matrix,MAT_FINAL_ASSEMBLY,ierr) |
322 |
|
323 |
|
324 |
call KSPCreate(PETSC_COMM_WORLD, ksp, ierr) |
325 |
call KSPSetOperators(ksp, matrix, matrix, |
326 |
& DIFFERENT_NONZERO_PATTERN, ierr) |
327 |
|
328 |
IF (PETSC_PRECOND_TYPE.eq.'MUMPS') then |
329 |
call KSPSetType(ksp,KSPPREONLY,ierr) |
330 |
ELSE |
331 |
SELECT CASE (PETSC_SOLVER_TYPE) |
332 |
CASE ('CG') |
333 |
PRINT *, "PETSC SOLVER: SELECTED CG" |
334 |
call KSPSetType(ksp, KSPCG, ierr) |
335 |
CASE ('GMRES') |
336 |
PRINT *, "PETSC SOLVER: SELECTED GMRES" |
337 |
call KSPSetType(ksp, KSPGMRES, ierr) |
338 |
CASE ('BICG') |
339 |
PRINT *, "PETSC SOLVER: SELECTED BICG" |
340 |
call KSPSetType(ksp, KSPBICG, ierr) |
341 |
CASE DEFAULT |
342 |
PRINT *, "PETSC SOLVER: SELECTED DEFAULT" |
343 |
call KSPSetType(ksp, KSPCG, ierr) |
344 |
END SELECT |
345 |
ENDIF |
346 |
|
347 |
call KSPGetPC(ksp, pc, ierr) |
348 |
call KSPSetTolerances(ksp,tolerance, |
349 |
& PETSC_DEFAULT_DOUBLE_PRECISION, |
350 |
& PETSC_DEFAULT_DOUBLE_PRECISION, |
351 |
& maxiter,ierr) |
352 |
|
353 |
SELECT CASE (PETSC_PRECOND_TYPE) |
354 |
CASE ('BLOCKJACOBI') |
355 |
PRINT *, "PETSC PRECOND: SELECTED BJACOBI" |
356 |
call PCSetType(pc, PCBJACOBI, ierr) |
357 |
call kspsetup (ksp, ierr) |
358 |
call PCBJacobiGetSubKSP (pc,PETSC_NULL_INTEGER, |
359 |
& PETSC_NULL_INTEGER, |
360 |
& subksp,ierr); |
361 |
call KSPGetPC (subksp, subpc, ierr) |
362 |
call PCSetType (subpc, PCILU, ierr) |
363 |
! call PCFactorSetLevels(subpc,0,ierr) |
364 |
CASE ('JACOBI') |
365 |
PRINT *, "PETSC PRECOND: SELECTED JACOBI" |
366 |
call PCSetType(pc, PCJACOBI, ierr) |
367 |
CASE ('ILU') |
368 |
PRINT *, "PETSC PRECOND: SELECTED ILU" |
369 |
call PCSetType(pc, PCILU, ierr) |
370 |
|
371 |
CASE ('GAMG') |
372 |
PRINT *, "PETSC PRECOND: SELECTED GAMG" |
373 |
call PCSetType(pc, PCGAMG, ierr) |
374 |
call PCGAMGSetCoarseEqLim(pc,10000,ierr) |
375 |
call PCGAMGSetSymGraph(pc, PETSC_TRUE,ierr) |
376 |
call PCGAMGSetNSmooths(pc, 0,ierr) |
377 |
call PCGAMGSetThreshold(pc, .001,ierr) |
378 |
! call PCGAMGSetReuseProl(pc,PETSC_FALSE,ierr) |
379 |
call kspsetup (ksp, ierr) |
380 |
|
381 |
CASE ('MUMPS') |
382 |
PRINT *, "PETSC PRECOND: SELECTED MUMPS" |
383 |
call PCSetType(pc,PCLU,ierr) |
384 |
call PCFactorSetMatSolverPackage(pc,MATSOLVERMUMPS,ierr) |
385 |
call PCFactorSetUpMatSolverPackage(pc,ierr) |
386 |
call PCFactorGetMatrix(pc,mumpsFac,ierr) |
387 |
call MatMumpsSetIcntl(mumpsfac,7,2,ierr) |
388 |
call MatMumpsSetIcntl(mumpsfac,24,1,ierr) |
389 |
! call MatMumpsSetCntl(mumpsfac,3,2.e-6,ierr) |
390 |
call kspsetup (ksp, ierr) |
391 |
|
392 |
CASE DEFAULT |
393 |
PRINT *, "PETSC PRECOND: SELECTED DEFAULT" |
394 |
call PCSetType(pc, PCBJACOBI, ierr) |
395 |
END SELECT |
396 |
|
397 |
|
398 |
CALL TIMER_STOP ('STREAMICE_PETSC_SETUP',myThid) |
399 |
#if (defined (ALLOW_OPENAD) && defined (ALLOW_STREAMICE_OAD_FP)) |
400 |
#ifdef ALLOW_PETSC |
401 |
endif |
402 |
#endif |
403 |
#endif |
404 |
|
405 |
|
406 |
CALL TIMER_START ('STREAMICE_PETSC_SOLVE',myThid) |
407 |
|
408 |
call KSPSolve(ksp, rhs, solution, ierr) |
409 |
|
410 |
CALL TIMER_STOP ('STREAMICE_PETSC_SOLVE',myThid) |
411 |
|
412 |
call KSPGetIterationNumber(ksp,iters,ierr) |
413 |
|
414 |
call VecGetValues(solution,local_dofs,indices, |
415 |
& solution_values,ierr) |
416 |
|
417 |
DO bj = myByLo(myThid), myByHi(myThid) |
418 |
DO bi = myBxLo(myThid), myBxHi(myThid) |
419 |
DO j=1,sNy |
420 |
DO i=1,sNx |
421 |
|
422 |
dof_index = INT(streamice_petsc_dofs_u(i,j,bi,bj)) |
423 |
& - local_offset |
424 |
if (dof_index.ge.0) THEN |
425 |
cg_Uin(i,j,bi,bj) = solution_values(dof_index+1) |
426 |
endif |
427 |
|
428 |
dof_index = INT(streamice_petsc_dofs_v(i,j,bi,bj)) |
429 |
& - local_offset |
430 |
if (dof_index.ge.0) THEN |
431 |
cg_Vin(i,j,bi,bj) = solution_values(dof_index+1) |
432 |
endif |
433 |
|
434 |
ENDDO |
435 |
ENDDO |
436 |
ENDDO |
437 |
ENDDO |
438 |
|
439 |
#if (defined (ALLOW_OPENAD) && defined (ALLOW_STREAMICE_OAD_FP)) |
440 |
if (streamice_need2destroymat) then |
441 |
#endif |
442 |
call KSPDestroy (ksp, ierr) |
443 |
call MatDestroy (matrix, ierr) |
444 |
#if (defined (ALLOW_OPENAD) && defined (ALLOW_STREAMICE_OAD_FP)) |
445 |
endif |
446 |
#endif |
447 |
call VecDestroy (rhs, ierr) |
448 |
call VecDestroy (solution, ierr) |
449 |
|
450 |
|
451 |
! call PetscFinalize(ierr) |
452 |
|
453 |
|
454 |
#endif |
455 |
|
456 |
|
457 |
|
458 |
#endif |
459 |
RETURN |
460 |
END |