Revision 8 src/EgradPath.f90
EgradPath.f90 (revision 8)  

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REAL(KREAL), ALLOCATABLE :: x(:), y(:), z(:) 
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REAL(KREAL), ALLOCATABLE :: x_k(:), y_k(:), z_k(:) 
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REAL(KREAL), ALLOCATABLE :: GeomCart(:,:) !(Nat,3) 
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REAL(KREAL), ALLOCATABLE :: GeomOld_dummy(:),GeomCart_old_dummy(:,:) 

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REAL(KREAL) :: E 
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LOGICAL :: Debug 
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LOGICAL, SAVE :: First=.TRUE. 
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CHARACTER(*), intent(in) :: string 
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logical :: isValid 
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END function VALID 
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subroutine Egrad(E,Geom,Grad,NCoord,IGeom,IOpt,GeomCart,FOptGeom,GeomOld,GeomCart_old) 

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! This routines calculates the energy E and the gradient Grad of 

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! a molecule with Geometry Geom (may be in internal coordinates), 

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! using for now, either Gaussian or Ext, more general later. 

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use Path_module, only : Nat,AtName,Coord,dzdc,indzmat,Nom,Atome,massat,unit, & 

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prog,NCart,XyzGeomF,IntCoordF,BTransInv, XyzGeomI, & 

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GeomOld_all,BTransInvF,BTransInv_local,UMatF,UMat_local & 

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, BprimT,a0,ScanCoord, Coordinate,NPrim,BMat_BakerT,BBT,BBT_inv & 

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, Order,OrderInv, XPrimitiveF 

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! IntCoordF(NGeomF,NCoord),GeomOld_all(NGeomF,NCoord) 

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! allocated in Path.f90 

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use Io_module 

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! Energy (calculated if F300K=.F., else estimated) 

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REAL(KREAL), INTENT (OUT) :: E 

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! NCoord: Number of the degrees of freedom 

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! IGeom: index of the geometry. 

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INTEGER(KINT), INTENT (IN) :: NCoord, IGeom, IOpt 

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! Geometry at which gradient is calculated (cf Factual also): 

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REAL(KREAL), INTENT (INOUT) :: Geom(NCoord) 

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! Gradient calculated at Geom geometry: 

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REAL(KREAL), INTENT (OUT) :: Grad(NCoord) 

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! Cartesian geometry corresponding to (Internal Geometry) Geom: 

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REAL(KREAL), INTENT (OUT) :: GeomCart(Nat,3) 

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!!! Optional, just for geometry optimization with Baker coordinates 

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REAL(KREAL), INTENT (IN), OPTIONAL :: GeomCart_old(Nat,3) 

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REAL(KREAL), INTENT (INOUT), OPTIONAL :: GeomOld(NCoord) 

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! FOptGeom is a flag indicating if we are doing a geom optimization 

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! it can be omitted so that we use a local flag: Flag_Opt_Geom 

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LOGICAL,INTENT (IN), OPTIONAL :: FOptGeom 

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! if FOptGeom is given Flag_Opt_Geom=FOptGeom, else Flag_Opt_Geom=F 

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LOGICAL :: Flag_Opt_Geom 

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END subroutine Egrad 

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END INTERFACE 
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debug=valid('EGradPath') 
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ALLOCATE(GeomTmp(NCoord)) 
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ALLOCATE(x(Nat),y(Nat),z(Nat)) 
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ALLOCATE(x_k(Nat),y_k(Nat),z_k(Nat)) 
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ALLOCATE(GeomOld_dummy(NCoord)) 

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ALLOCATE(GeomCart_old_dummy(Nat,3)) 

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IF (RunMode=="PARA") THEN ! matches at L315 
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ELSE ! matches IF (RunMode=="PARA") THEN 
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! We will launch all calculations sequentially 
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ALLOCATE(GradTmp(NCoord)) 
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GeomOld_dummy=0.d0 ! Internal coordinates 

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GeomCart_old_dummy=0.d0 

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! We have the new path, we calculate its energy and gradient 
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IGeom0=2 
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IGeomF=NGeomF1 
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WRITE(*,'(12(1X,F6.3))') GeomCart 
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END IF 
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IF (COORD.EQ.'BAKER') THEN 

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! GradTmp is gradient and calculated in Egrad.F, INTENT(OUT). 
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! GeomCart has INTENT(OUT) 
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Call EGrad_baker(E,GeomTmp,GradTmp,NCoord,IGeom,IOpt,GeomCart,Flag_Opt_Geom, & 

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GeomOld_dummy,GeomCart_old_dummy) 

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ELSE 

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Call EGrad(E,GeomTmp,GradTmp,NCoord,IGeom,IOpt,GeomCart,Flag_Opt_Geom) !GeomTmp=IntCoordF(IGeom,:) 

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END IF 

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Call EGrad(E,GeomTmp,GradTmp,NCoord,IGeom,IOpt,GeomCart) !GeomTmp=IntCoordF(IGeom,:) 

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! Egrad calls ConvertBakerInternal_cart to convert GeomTmp=IntCoordF(IGeom,:) into 
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! GeomCart (Cartesian Coordinates) so that energy and gradients can be calculated 
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DEALLOCATE(GeomTmp) 
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DEALLOCATE(x,y,z) 
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DEALLOCATE(x_k,y_k,z_k) 
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DEALLOCATE(GeomOld_dummy,GeomCart_old_dummy) 

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if (debug) Call header('Exiting EgradPath') 
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RETURN 
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999 WRITE(*,*) "EgradPath : We should not be here !" 
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