root / src / egrad_ext.f90 @ 2
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| 1 | 1 | equemene | subroutine egrad_ext(e,geomcart,gradcart) |
|---|---|---|---|
| 2 | 1 | equemene | |
| 3 | 1 | equemene | ! This routines calculates the energy and the gradient of |
| 4 | 1 | equemene | ! a molecule, using an external code |
| 5 | 1 | equemene | |
| 6 | 1 | equemene | |
| 7 | 1 | equemene | use Path_module, only : Nat, renum,Order,OrderInv,AtName, Coord, dzdc, indzmat,Nom,Atome, massat, unit,ProgExe |
| 8 | 1 | equemene | use Io_module |
| 9 | 1 | equemene | |
| 10 | 1 | equemene | ! |
| 11 | 1 | equemene | IMPLICIT NONE |
| 12 | 1 | equemene | |
| 13 | 1 | equemene | ! Energy (calculated if F300K=.F., else estimated) |
| 14 | 1 | equemene | REAL(KREAL), INTENT (OUT) :: e |
| 15 | 1 | equemene | ! Nb degree of freedom |
| 16 | 1 | equemene | ! Geometry at which gradient is calculated (cf FActual also) |
| 17 | 1 | equemene | REAL(KREAL), INTENT (IN) :: geomcart(Nat,3) |
| 18 | 1 | equemene | ! Gradient calculated at Geom geometry |
| 19 | 1 | equemene | REAL(KREAL), INTENT (OUT) :: gradcart(3*Nat) |
| 20 | 1 | equemene | |
| 21 | 1 | equemene | ! ====================================================================== |
| 22 | 1 | equemene | |
| 23 | 1 | equemene | character(LCHARS) :: LINE |
| 24 | 1 | equemene | |
| 25 | 1 | equemene | logical :: debug |
| 26 | 1 | equemene | LOGICAL :: fexist, FSim |
| 27 | 1 | equemene | LOGICAL, SAVE :: first=.true. |
| 28 | 1 | equemene | LOGICAL, ALLOCATABLE :: Done(:) |
| 29 | 1 | equemene | |
| 30 | 1 | equemene | REAL(KREAL), SAVE :: Eold=1.e6 |
| 31 | 1 | equemene | REAL(KREAL) :: d, a_val, Pi |
| 32 | 1 | equemene | |
| 33 | 1 | equemene | REAL(KREAL) :: coef,x |
| 34 | 1 | equemene | INTEGER(KINT) :: iat, jat, kat, i, j, n3at, absidg, absidg2 |
| 35 | 1 | equemene | INTEGER(KINT) :: kTmp, Istart,ITmp1,ITmp2, Idx |
| 36 | 1 | equemene | INTEGER(KINT), PARAMETER :: IOLOG=12, IOCOM=11 |
| 37 | 1 | equemene | |
| 38 | 1 | equemene | ! |
| 39 | 1 | equemene | CHARACTER(132) :: FileIn,FileOut |
| 40 | 1 | equemene | |
| 41 | 1 | equemene | CHARACTER(LCHARS) :: ListName, TitleTmp, CH32SVAR1 |
| 42 | 1 | equemene | CHARACTER(VLCHARS), SAVE :: RstrtCopy, RunCommand |
| 43 | 1 | equemene | LOGICAL, SAVE :: FCopyRstrt=.False., FOrderChecked=.False. |
| 44 | 1 | equemene | LOGICAL :: FRdyn,FStopNucl, FTmp, Tchk,Tchk1 |
| 45 | 1 | equemene | INTEGER(kint) :: NbLists,LastIt,Nat4,NStep, Firstit |
| 46 | 1 | equemene | INTEGER(KINT) :: NStepAd,NStepTmp |
| 47 | 1 | equemene | INTEGER(KINT) :: IShowTmp |
| 48 | 1 | equemene | REAL(KREAL) :: FricPsiMin,FricPsiT, FricNuclTmp |
| 49 | 1 | equemene | |
| 50 | 1 | equemene | |
| 51 | 1 | equemene | INTEGER(KINT), PARAMETER :: NbExtName=4 |
| 52 | 1 | equemene | |
| 53 | 1 | equemene | INTEGER(KINT) :: ICouc |
| 54 | 1 | equemene | |
| 55 | 1 | equemene | INTEGER(KINT) :: ILine |
| 56 | 1 | equemene | INTEGER(KINT) :: NPulses, PulseLen, NStepWarm,NStepAv,NStepEq,NStepTot |
| 57 | 1 | equemene | REAL(KREAL) :: TempWarm,Mean,Slope,Dev,RTmp1,RTmp2 |
| 58 | 1 | equemene | |
| 59 | 1 | equemene | ! ====================================================================== |
| 60 | 1 | equemene | |
| 61 | 1 | equemene | LOGICAL, EXTERNAL :: valid |
| 62 | 1 | equemene | |
| 63 | 1 | equemene | ! ====================================================================== |
| 64 | 1 | equemene | |
| 65 | 1 | equemene | |
| 66 | 1 | equemene | Pi=dacos(-1.0d0) |
| 67 | 1 | equemene | n3at=3*nat |
| 68 | 1 | equemene | |
| 69 | 1 | equemene | debug=valid('EGRAD')
|
| 70 | 1 | equemene | if (debug) WRITE(*,*) '================ Entering Egrad_ext ====================' |
| 71 | 1 | equemene | |
| 72 | 1 | equemene | RunCommand=Trim(Adjustl(ProgExe)) |
| 73 | 1 | equemene | FileIn=Trim(CalcName) // Trim(ISuffix) |
| 74 | 1 | equemene | FileOut=Trim(CalcName) // Trim(OSuffix) |
| 75 | 1 | equemene | |
| 76 | 1 | equemene | IF (DEBUG) WRITE(*,*)'RunCommand:',TRIM(RunCommand) |
| 77 | 1 | equemene | |
| 78 | 1 | equemene | ! we create the input file |
| 79 | 1 | equemene | |
| 80 | 1 | equemene | OPEN(IOTMP,File=FileIn) |
| 81 | 1 | equemene | |
| 82 | 1 | equemene | WRITE(IOTMP,'(1X,I10)') NAt |
| 83 | 1 | equemene | WRITE(IOTMP,'(1X,A)') Coord |
| 84 | 1 | equemene | |
| 85 | 1 | equemene | DO I=1,Nat |
| 86 | 1 | equemene | If (renum) THEN |
| 87 | 1 | equemene | Iat=Order(I) |
| 88 | 1 | equemene | WRITE(IOTMP,'(1X,A10,3(1X,F15.8),A)') Trim(AtName(I)),GeomCart(Iat,:) |
| 89 | 1 | equemene | ELSE |
| 90 | 1 | equemene | Iat=OrderInv(I) |
| 91 | 1 | equemene | WRITE(IOTMP,'(1X,A10,3(1X,F15.8),A)') Trim(AtName(Iat)),GeomCart(I,:) |
| 92 | 1 | equemene | END IF |
| 93 | 1 | equemene | END DO |
| 94 | 1 | equemene | |
| 95 | 1 | equemene | call system(RunCommand) |
| 96 | 1 | equemene | |
| 97 | 1 | equemene | if (debug) WRITE(*,*) 'DBG EGRAD, back from calculation' |
| 98 | 1 | equemene | |
| 99 | 1 | equemene | OPEN(IOTMP,FILE=FileOut, STATUS='old') |
| 100 | 1 | equemene | ! We first search for the forces |
| 101 | 1 | equemene | READ(IOTMP,*) e |
| 102 | 1 | equemene | DO I=1,Nat |
| 103 | 1 | equemene | Iat=I |
| 104 | 1 | equemene | IF (renum) Iat=Order(I) |
| 105 | 1 | equemene | READ(IOTMP,*) GradCart(3*Iat-2:3*Iat) |
| 106 | 1 | equemene | END DO |
| 107 | 1 | equemene | |
| 108 | 1 | equemene | CLOSE(IOTMP) |
| 109 | 1 | equemene | |
| 110 | 1 | equemene | |
| 111 | 1 | equemene | if (debug) WRITE(*,*) '================ Egrad_ext Over ====================' |
| 112 | 1 | equemene | |
| 113 | 1 | equemene | RETURN |
| 114 | 1 | equemene | |
| 115 | 1 | equemene | 999 CONTINUE |
| 116 | 1 | equemene | if (.NOT.Ftmp) WRITE(*,*) 'We should not be here !!!!' |
| 117 | 1 | equemene | STOP |
| 118 | 1 | equemene | ! ====================================================================== |
| 119 | 1 | equemene | end subroutine egrad_ext |