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C \============================================================/ |
C \============================================================/ |
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IMPLICIT NONE |
IMPLICIT NONE |
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C === Global variables === |
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#include "SIZE.h" |
#include "SIZE.h" |
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#include "EEPARAMS.h" |
#include "EEPARAMS.h" |
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#include "PARAMS.h" |
#include "PARAMS.h" |
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#include "STREAMICE.h" |
#include "STREAMICE.h" |
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#include "STREAMICE_CG.h" |
#include "STREAMICE_CG.h" |
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#ifdef ALLOW_PETSC |
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#include "finclude/petsc.h" |
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! UNCOMMENT IF V3.0 |
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!#include "finclude/petscvec.h" |
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!#include "finclude/petscmat.h" |
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!#include "finclude/petscksp.h" |
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!#include "finclude/petscpc.h" |
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#endif |
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C === Global variables === |
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C !INPUT/OUTPUT ARGUMENTS |
C !INPUT/OUTPUT ARGUMENTS |
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C cg_Uin, cg_Vin - input and output velocities |
C cg_Uin, cg_Vin - input and output velocities |
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_RL dot_p2_tile (nSx,nSy) |
_RL dot_p2_tile (nSx,nSy) |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
CHARACTER*(MAX_LEN_MBUF) msgBuf |
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iters = streamice_max_cg_iter |
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#ifdef ALLOW_PETSC |
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INTEGER indices(2*(snx*nsx*sny*nsy)) |
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INTEGER n_dofs_cum_sum (0:nPx*nPy-1), idx(1) |
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_RL rhs_values(2*(snx*nsx*sny*nsy)) |
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_RL solution_values(2*(snx*nsx*sny*nsy)) |
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! _RL mat_values (2*Nx*Ny,2*(snx*nsx*sny*nsy)) |
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_RL mat_values (18,1), mat_val_return(1) |
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INTEGER indices_col(18) |
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INTEGER local_dofs, global_dofs, dof_index, dof_index_col |
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INTEGER local_offset |
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Mat matrix |
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KSP ksp |
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PC pc |
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Vec rhs |
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Vec solution |
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PetscErrorCode ierr |
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#ifdef ALLOW_USE_MPI |
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integer mpiRC, mpiMyWid |
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#endif |
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#endif |
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#ifdef ALLOW_STREAMICE |
#ifdef ALLOW_STREAMICE |
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CALL TIMER_START ('STREAMICE_CG_SOLVE',myThid) |
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#ifndef STREAMICE_SERIAL_TRISOLVE |
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#ifdef ALLOW_PETSC |
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#ifdef ALLOW_USE_MPI |
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CALL MPI_COMM_RANK( MPI_COMM_WORLD, mpiMyWId, mpiRC ) |
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local_dofs = n_dofs_process (mpiMyWid) |
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global_dofs = 0 |
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n_dofs_cum_sum(0) = 0 |
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DO i=0,nPx*nPy-1 |
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global_dofs = global_dofs + n_dofs_process (i) |
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if (i.ge.1) THEN |
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n_dofs_cum_sum(i) = n_dofs_cum_sum(i-1)+ |
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& n_dofs_process(i-1) |
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endif |
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ENDDO |
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local_offset = n_dofs_cum_sum(mpimywid) |
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#else |
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local_dofs = n_dofs_process (0) |
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global_dofs = local_dofs |
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local_offset = 0 |
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#endif |
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! call petscInitialize(PETSC_NULL_CHARACTER,ierr) |
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!---------------------- |
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call VecCreate(PETSC_COMM_WORLD, rhs, ierr) |
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call VecSetSizes(rhs, local_dofs, global_dofs, ierr) |
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call VecSetType(rhs, VECMPI, ierr) |
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call VecCreate(PETSC_COMM_WORLD, solution, ierr) |
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call VecSetSizes(solution, local_dofs, global_dofs, ierr) |
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call VecSetType(solution, VECMPI, ierr) |
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do i=1,local_dofs |
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indices(i) = i-1 + local_offset |
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end do |
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do i=1,2*nSx*nSy*sNx*sNy |
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rhs_values (i) = 0. _d 0 |
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solution_values (i) = 0. _d 0 |
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enddo |
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! gather rhs and initial guess values to populate petsc vectors |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1,sNy |
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DO i=1,sNx |
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dof_index = INT(streamice_petsc_dofs_u(i,j,bi,bj)) |
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& - local_offset |
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if (dof_index.ge.0) THEN |
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rhs_values(dof_index+1) = cg_Bu(i,j,bi,bj) |
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solution_values(dof_index+1) = cg_Uin(i,j,bi,bj) |
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endif |
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!--------------- |
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dof_index = INT(streamice_petsc_dofs_v(i,j,bi,bj)) |
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& - local_offset |
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if (dof_index.ge.0) THEN |
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rhs_values(dof_index+1) = cg_Bv(i,j,bi,bj) |
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solution_values(dof_index+1) = cg_Vin(i,j,bi,bj) |
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endif |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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call VecSetValues(rhs, local_dofs, indices, rhs_values, |
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& INSERT_VALUES, ierr) |
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call VecAssemblyBegin(rhs, ierr) |
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call VecAssemblyEnd(rhs, ierr) |
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call VecSetValues(solution, local_dofs, indices, |
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& solution_values, INSERT_VALUES, ierr) |
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call VecAssemblyBegin(solution, ierr) |
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call VecAssemblyEnd(solution, ierr) |
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! IF USING v3.0 THEN |
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! call MatCreateMPIAIJ (PETSC_COMM_WORLD, |
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call MatCreateAIJ (PETSC_COMM_WORLD, |
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& local_dofs, local_dofs, |
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& global_dofs, global_dofs, |
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& 18, PETSC_NULL_INTEGER, |
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& 18, PETSC_NULL_INTEGER, |
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& matrix, ierr) |
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! populate petsc matrix |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1,sNy |
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DO i=1,sNx |
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dof_index = INT(streamice_petsc_dofs_u(i,j,bi,bj)) |
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! & - local_offset |
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IF (dof_index .ge. 0) THEN |
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DO k=1,18 |
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indices_col(k) = 0 |
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mat_values(k,1) = 0. _d 0 |
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ENDDO |
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k=0 |
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DO coly=-1,1 |
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DO colx=-1,1 |
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dof_index_col = streamice_petsc_dofs_u(i+colx,j+coly,bi,bj) |
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if (dof_index_col.ge.0) THEN |
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! pscal = A_uu(i,j,bi,bj,colx,coly) |
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! CALL MatSetValue (matrix,dof_index, dof_index_col, |
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! & pscal,INSERT_VALUES,ierr) |
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k=k+1 |
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mat_values (k,1) = A_uu(i,j,bi,bj,colx,coly) |
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indices_col (k) = dof_index_col |
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endif |
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dof_index_col = streamice_petsc_dofs_v(i+colx,j+coly,bi,bj) |
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if (dof_index_col.ge.0) THEN |
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! CALL MatSetValue (matrix,dof_index, dof_index_col, |
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! & A_uv(i,j,bi,bj,colx,coly),INSERT_VALUES,ierr) |
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k=k+1 |
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mat_values (k,1) = A_uv(i,j,bi,bj,colx,coly) |
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indices_col (k) = dof_index_col |
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endif |
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ENDDO |
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ENDDO |
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call matSetValues (matrix, 1, dof_index, k, indices_col, |
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& mat_values,INSERT_VALUES,ierr) |
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ENDIF |
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! ---------------------------------------------- |
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dof_index = INT(streamice_petsc_dofs_v(i,j,bi,bj)) |
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! & - local_offset |
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IF (dof_index .ge. 0) THEN |
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DO k=1,18 |
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indices_col(k) = 0 |
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mat_values(k,1) = 0. _d 0 |
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ENDDO |
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k=0 |
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DO coly=-1,1 |
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DO colx=-1,1 |
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dof_index_col = streamice_petsc_dofs_u(i+colx,j+coly,bi,bj) |
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if (dof_index_col.ge.0) THEN |
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! CALL MatSetValue (matrix,dof_index, dof_index_col, |
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! & A_vu(i,j,bi,bj,colx,coly),INSERT_VALUES,ierr) |
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k=k+1 |
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mat_values (k,1) = A_vu(i,j,bi,bj,colx,coly) |
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indices_col (k) = dof_index_col |
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endif |
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dof_index_col = streamice_petsc_dofs_v(i+colx,j+coly,bi,bj) |
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if (dof_index_col.ge.0) THEN |
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! CALL MatSetValue (matrix,dof_index, dof_index_col, |
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! & A_vv(i,j,bi,bj,colx,coly),INSERT_VALUES,ierr) |
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k=k+1 |
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mat_values (k,1) = A_vv(i,j,bi,bj,colx,coly) |
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indices_col (k) = dof_index_col |
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endif |
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ENDDO |
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ENDDO |
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call matSetValues (matrix, 1, dof_index, k, indices_col, |
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& mat_values,INSERT_VALUES,ierr) |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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call MatAssemblyBegin(matrix,MAT_FINAL_ASSEMBLY,ierr) |
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call MatAssemblyEnd(matrix,MAT_FINAL_ASSEMBLY,ierr) |
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call KSPCreate(PETSC_COMM_WORLD, ksp, ierr) |
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call KSPSetOperators(ksp, matrix, matrix, |
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& DIFFERENT_NONZERO_PATTERN, ierr) |
311 |
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312 |
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SELECT CASE (PETSC_SOLVER_TYPE) |
313 |
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CASE ('CG') |
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PRINT *, "PETSC SOLVER: SELECTED CG" |
315 |
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call KSPSetType(ksp, KSPCG, ierr) |
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CASE ('GMRES') |
317 |
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PRINT *, "PETSC SOLVER: SELECTED GMRES" |
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call KSPSetType(ksp, KSPGMRES, ierr) |
319 |
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CASE ('BICG') |
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PRINT *, "PETSC SOLVER: SELECTED BICG" |
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call KSPSetType(ksp, KSPBICG, ierr) |
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CASE DEFAULT |
323 |
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PRINT *, "PETSC SOLVER: SELECTED DEFAULT" |
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call KSPSetType(ksp, KSPCG, ierr) |
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END SELECT |
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call KSPGetPC(ksp, pc, ierr) |
328 |
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call KSPSetTolerances(ksp,tolerance, |
329 |
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& PETSC_DEFAULT_DOUBLE_PRECISION, |
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& PETSC_DEFAULT_DOUBLE_PRECISION, |
331 |
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& streamice_max_cg_iter,ierr) |
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SELECT CASE (PETSC_PRECOND_TYPE) |
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CASE ('BLOCKJACOBI') |
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PRINT *, "PETSC PRECOND: SELECTED BJACOBI" |
336 |
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call PCSetType(pc, PCBJACOBI, ierr) |
337 |
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CASE ('JACOBI') |
338 |
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PRINT *, "PETSC PRECOND: SELECTED JACOBI" |
339 |
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call PCSetType(pc, PCJACOBI, ierr) |
340 |
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CASE ('ILU') |
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PRINT *, "PETSC PRECOND: SELECTED ILU" |
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call PCSetType(pc, PCILU, ierr) |
343 |
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CASE DEFAULT |
344 |
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PRINT *, "PETSC PRECOND: SELECTED DEFAULT" |
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call PCSetType(pc, PCBJACOBI, ierr) |
346 |
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END SELECT |
347 |
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348 |
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349 |
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call KSPSolve(ksp, rhs, solution, ierr) |
350 |
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call KSPGetIterationNumber(ksp,iters,ierr) |
351 |
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352 |
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call VecGetValues(solution,local_dofs,indices, |
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& solution_values,ierr) |
354 |
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355 |
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DO bj = myByLo(myThid), myByHi(myThid) |
356 |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
357 |
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DO j=1,sNy |
358 |
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DO i=1,sNx |
359 |
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360 |
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dof_index = INT(streamice_petsc_dofs_u(i,j,bi,bj)) |
361 |
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& - local_offset |
362 |
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if (dof_index.ge.0) THEN |
363 |
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cg_Uin(i,j,bi,bj) = solution_values(dof_index+1) |
364 |
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endif |
365 |
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366 |
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dof_index = INT(streamice_petsc_dofs_v(i,j,bi,bj)) |
367 |
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& - local_offset |
368 |
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if (dof_index.ge.0) THEN |
369 |
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cg_Vin(i,j,bi,bj) = solution_values(dof_index+1) |
370 |
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endif |
371 |
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372 |
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ENDDO |
373 |
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ENDDO |
374 |
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ENDDO |
375 |
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ENDDO |
376 |
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377 |
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378 |
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#else /* ALLOW_PETSC */ |
380 |
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381 |
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382 |
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iters = streamice_max_cg_iter |
383 |
conv_flag = 0 |
conv_flag = 0 |
384 |
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385 |
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517 |
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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 |
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520 |
print *, "BEGINNING MAIN CG LOOP" |
WRITE(msgBuf,'(A)') 'BEGINNING MAIN CG LOOP' |
521 |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
522 |
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& SQUEEZE_RIGHT , 1) |
523 |
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524 |
! IF(STREAMICE_construct_matrix) CALL STREAMICE_CG_MAKE_A(myThid) |
! IF(STREAMICE_construct_matrix) CALL STREAMICE_CG_MAKE_A(myThid) |
525 |
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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 |
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771 |
#endif |
#endif /* ifndef ALLOW_PETSC */ |
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RETURN |
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END |
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772 |
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773 |
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#else /* STREAMICE_SERIAL_TRISOLVE */ |
774 |
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775 |
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CALL STREAMICE_TRIDIAG_SOLVE( |
776 |
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U cg_Uin, ! x-velocities |
777 |
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U cg_Vin, |
778 |
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U cg_Bu, ! force in x dir |
779 |
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I A_uu, ! section of matrix that multiplies u and projects on u |
780 |
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I STREAMICE_umask, |
781 |
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I myThid ) |
782 |
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783 |
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#endif |
784 |
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785 |
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CALL TIMER_STOP ('STREAMICE_CG_SOLVE',myThid) |
786 |
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787 |
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788 |
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#endif |
789 |
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RETURN |
790 |
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END |