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wwm_petsc_seriell.F90
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#include "wwm_functions.h"
#ifdef PETSC
MODULE PETSC_SERIELL
#include "finclude/petscsys.h"
#include "finclude/petscvec.h"
#include "finclude/petscvec.h90"
#include "finclude/petscmat.h"
#include "finclude/petscksp.h"
#include "finclude/petscao.h"
#include "finclude/petscis.h"
#include "finclude/petscdraw.h"
#include "finclude/petscviewer.h"
#include "finclude/petscviewer.h90"
#include "finclude/petscviewerdef.h"
KSPConvergedReason reason;
PetscInt iterationen;
contains
SUBROUTINE PETSC_INIT_SERIELL()
USE DATAPOOL
use petscpool
IMPLICIT NONE
! create sparse matrix
! call MatCreateSeqAIJWithArrays(PETSC_COMM_SELF, MNP, MNP, IA_P, JA_P, ASPAR, matrix, petscErr);CHKERRQ(petscErr)
call MatCreate(PETSC_COMM_SELF, matrix, petscErr);CHKERRQ(petscErr)
call MatSetType(matrix, MATSEQAIJ , petscErr);CHKERRQ(petscErr)
call MatSetSizes(matrix, PETSC_DECIDE, PETSC_DECIDE, MNP, MNP, petscErr);CHKERRQ(petscErr)
!create x vector
call VecCreate(PETSC_COMM_SELF, myX, petscErr);CHKERRQ(petscErr)
call VecSetSizes(myX, PETSC_DECIDE, MNP, petscErr);CHKERRQ(petscErr)
call VecSetType(myX,VECSEQ, petscErr);CHKERRQ(petscErr)
! create vec myB
call VecCreate(PETSC_COMM_SELF, myB, petscErr);CHKERRQ(petscErr)
call VecSetSizes(myB, PETSC_DECIDE, MNP, petscErr);CHKERRQ(petscErr)
call VecSetType(myB,VECSEQ, petscErr);CHKERRQ(petscErr)
! create solver
call KSPCreate(PETSC_COMM_SELF, Solver, petscErr);CHKERRQ(petscErr)
! call KSPSetOperators(Solver, matrix, matrix, SAME_NONZERO_PATTERN, petscErr); CHKERRQ(petscErr)
call KSPSetOperators(Solver, matrix, matrix, 0, petscErr); CHKERRQ(petscErr)
call KSPSetType(Solver,KSPBCGS, petscErr);CHKERRQ(petscErr)
! call KSPSetType(Solver, KSPIBCGS, petscErr);CHKERRQ(petscErr) ! this solver create a segfault
! Create preconditioner
call KSPGetPC(Solver, Prec, petscErr);CHKERRQ(petscErr)
call PCSetType(Prec, PCILU, petscErr);CHKERRQ(petscErr)
END SUBROUTINE
!**********************************************************************
!* *
!**********************************************************************
SUBROUTINE EIMPS_PETSC_SERIELL(ISS, IDD)
USE DATAPOOL
use petscpool
IMPLICIT NONE
INTEGER, INTENT(IN) :: ISS,IDD
INTEGER :: I, J
! INTEGER :: KK
INTEGER :: IP, IPGL1, IE, POS
INTEGER :: I1, I2, I3, IPrel
real(rkind) :: DTK, TMP3
real(rkind) :: LAMBDA(2)
real(rkind) :: FL11, FL12, FL21, FL22, FL31, FL32
real(rkind) :: CRFS(3), K1, KM(3), K(3), TRIA03
real(rkind) :: DELTAL(3,MNE)
real(rkind) :: KP(3,MNE), NM(MNE)
real(rkind) :: U(MNP), C(2,MNP)
real(rkind) :: X(MNP)
real(rkind) :: B(MNP)
real(rkind) :: ASPAR(NNZ)
#ifdef TIMINGS
REAL :: TIME1, TIME2, TIME3, TIME4, TIME5
#endif
INTEGER :: POS_TRICK(3,2)
! petsc stuff
integer :: counter
integer :: nnznew
integer :: temp
PetscInt :: ncols
PetscInt :: eCol, eRow
PetscScalar :: eValue
#ifdef TIMINGS
CALL WAV_MY_WTIME(TIME1)
#endif
POS_TRICK(1,1) = 2
POS_TRICK(1,2) = 3
POS_TRICK(2,1) = 3
POS_TRICK(2,2) = 1
POS_TRICK(3,1) = 1
POS_TRICK(3,2) = 2
CALL CADVXY(ISS,IDD,C)
!
! Calculate countour integral quantities ...
!
DO IE = 1, MNE
I1 = INE(1,IE)
I2 = INE(2,IE)
I3 = INE(3,IE)
LAMBDA(1) = ONESIXTH * (C(1,I1)+C(1,I2)+C(1,I3))
LAMBDA(2) = ONESIXTH * (C(2,I1)+C(2,I2)+C(2,I3))
K(1) = LAMBDA(1) * IEN(1,IE) + LAMBDA(2) * IEN(2,IE)
K(2) = LAMBDA(1) * IEN(3,IE) + LAMBDA(2) * IEN(4,IE)
K(3) = LAMBDA(1) * IEN(5,IE) + LAMBDA(2) * IEN(6,IE)
KP(1,IE) = MAX(ZERO,K(1))
KP(2,IE) = MAX(ZERO,K(2))
KP(3,IE) = MAX(ZERO,K(3))
KM(1) = MIN(ZERO,K(1))
KM(2) = MIN(ZERO,K(2))
KM(3) = MIN(ZERO,K(3))
FL11 = C(1,I2)*IEN(1,IE)+C(2,I2)*IEN(2,IE)
FL12 = C(1,I3)*IEN(1,IE)+C(2,I3)*IEN(2,IE)
FL21 = C(1,I3)*IEN(3,IE)+C(2,I3)*IEN(4,IE)
FL22 = C(1,I1)*IEN(3,IE)+C(2,I1)*IEN(4,IE)
FL31 = C(1,I1)*IEN(5,IE)+C(2,I1)*IEN(6,IE)
FL32 = C(1,I2)*IEN(5,IE)+C(2,I2)*IEN(6,IE)
CRFS(1) = - ONESIXTH * (TWO *FL31 + FL32 + FL21 + TWO * FL22 )
CRFS(2) = - ONESIXTH * (TWO *FL32 + TWO * FL11 + FL12 + FL31 )
CRFS(3) = - ONESIXTH * (TWO *FL12 + TWO * FL21 + FL22 + FL11 )
DELTAL(:,IE) = CRFS(:)- KP(:,IE)
NM(IE) = 1.0_rkind/MIN(-THR,SUM(KM(:)))
END DO
#ifdef TIMINGS
CALL WAV_MY_WTIME(TIME2)
#endif
U(:) = AC2(ISS,IDD,:)
J = 0 ! Counter ...
ASPAR = ZERO ! Mass matrix ...
B = ZERO ! Right hand side ...
!
! ... assembling the linear equation system ....
!
DO IP = 1, NP_RES
IF (IOBPD(IDD,IP) .EQ. 1 .AND. IOBWB(IP) .EQ. 1 .AND. DEP(IP) .GT. DMIN) THEN
DO I = 1, CCON(IP)
J = J + 1
IE = IE_CELL(J)
POS = POS_CELL(J)
K1 = KP(POS,IE) ! Flux Jacobian
TRIA03 = ONETHIRD * TRIA(IE)
DTK = K1 * DT4A * IOBPD(IDD,IP)
TMP3 = DTK * NM(IE)
I1 = POSI(1,J) ! Position of the recent entry in the ASPAR matrix ... ASPAR is shown in fig. 42, p.122
I2 = POSI(2,J)
I3 = POSI(3,J)
ASPAR(I1) = TRIA03 + DTK - TMP3 * DELTAL(POS ,IE) + ASPAR(I1) ! Diagonal entry
ASPAR(I2) = - TMP3 * DELTAL(POS_TRICK(POS,1),IE) + ASPAR(I2) ! off diagonal entries ...
ASPAR(I3) = - TMP3 * DELTAL(POS_TRICK(POS,2),IE) + ASPAR(I3)
B(IP) = B(IP) + TRIA03 * U(IP)
END DO !I: loop over connected elements ...
ELSE
DO I = 1, CCON(IP)
J = J + 1
IE = IE_CELL(J)
TRIA03 = ONETHIRD * TRIA(IE)
I1 = POSI(1,J) ! Position of the recent entry in the ASPAR matrix ... ASPAR is shown in fig. 42, p.122
ASPAR(I1) = TRIA03 + ASPAR(I1) ! Diagonal entry
B(IP) = 0.!B(IP) + TRIA03 * 0.
END DO !I: loop over connected elements ...
END IF
END DO !IP
IF (LBCWA .OR. LBCSP) THEN
DO IP = 1, IWBMNP
IF (LINHOM) THEN
IPrel=IP
ELSE
IPrel=1
ENDIF
IPGL1 = IWBNDLC(IP)
ASPAR(I_DIAG(IPGL1)) = SI(IPGL1) ! Set boundary on the diagonal
B(IPGL1) = SI(IPGL1) * WBAC(ISS,IDD,IPrel)
END DO
END IF
IF (ICOMP .GE. 2 .AND. SMETHOD .GT. 0) THEN
DO IP = 1, NP_RES
IF (IOBWB(IP) .EQ. 1) THEN
ASPAR(I_DIAG(IP)) = ASPAR(I_DIAG(IP)) + DPHIDNA(ISS,IDD,IP) * DT4A * SI(IP) ! Add source term to the diagonal
B(IP) = B(IP) + PHIA(ISS,IDD,IP) * DT4A * SI(IP) ! Add source term to the right hand side
ENDIF
END DO
ENDIF
#ifdef TIMINGS
CALL WAV_MY_WTIME(TIME3)
#endif
!> \todo for efficiency reason this will be moved out of this part when the code is working, AR.
! fill the matrix
call MatZeroEntries(matrix, petscErr);CHKERRQ(petscErr)
counter = 1
nnznew=0
do i = 1, MNP
ncols = IA_P(i+1) - IA_P(i)
eRow = i - 1
! insert col by col into matrix
do j = 1, ncols
! the value we want to insert
eValue=ASPAR(counter)
! get the col index in old counting
temp = JA_P(counter)
counter = counter + 1
nnznew=nnznew + 1
eCol = temp
call MatSetValue(matrix, eRow, eCol, eValue, ADD_VALUES, petscErr);CHKERRQ(petscErr)
end do
end do ! np
call MatAssemblyBegin(matrix,MAT_FINAL_ASSEMBLY, petscErr);CHKERRQ(petscErr);
call MatAssemblyEnd(matrix,MAT_FINAL_ASSEMBLY, petscErr);CHKERRQ(petscErr);
!fill RHS vector
call VecGetArrayF90(myB, myBtemp, petscErr);CHKERRQ(petscErr)
myBtemp = B
call VecRestoreArrayF90(myB, myBtemp, petscErr);CHKERRQ(petscErr)
call VecAssemblyBegin(myB, petscErr);CHKERRQ(petscErr);
call VecAssemblyEnd(myB, petscErr);CHKERRQ(petscErr);
#ifdef TIMINGS
CALL WAV_MY_WTIME(TIME4)
#endif
! Solve
call KSPSolve(Solver, myB, myX, petscErr);CHKERRQ(petscErr)
#ifdef TIMINGS
CALL WAV_MY_WTIME(TIME5)
#endif
!WRITE(*,*) TIME2-TIME1, TIME3-TIME2, TIME4-TIME3, TIME5-TIME4
call KSPGetConvergedReason(Solver, reason, petscErr);CHKERRQ(petscErr)
if (reason .LT. 0) then
write(*,*) "Failure to converge\n"
stop 'wwm_petsc_seriell l.260'
else
call KSPGetIterationNumber(Solver, iterationen, petscErr);CHKERRQ(petscErr)
if(iterationen /= 0) write(*,*) "Number of iterations", iss,idd,iterationen
! write(*,*) "Number of iterations", iterationen
endif
! write the soluten from vec into fortran array
X = ZERO
call VecGetArrayF90(myX, myXtemp, petscErr);CHKERRQ(petscErr)
X = myXtemp
call VecRestoreArrayF90(myX, myXtemp, petscErr);CHKERRQ(petscErr)
IF (SUM(X) .NE. SUM(X)) CALL WWM_ABORT('NaN in X')
! AC2(ISS, IDD,:) = MAX(ZERO,X)
AC2(ISS,IDD,:) = X(:)
#ifdef TIMINGS
! CALL WAV_MY_WTIME(TIME4)
#endif
END SUBROUTINE
!> cleanup memory. You never need to call this function by hand. It will automaticly called by PETSC_FINALIZE()
subroutine PETSC_FINALIZE_SERIELL()
implicit none
end subroutine
end module
#endif