source/unres/src_MD-M/checkder_p.F

   1       subroutine check_cartgrad
   2 C Check the gradient of Cartesian coordinates in internal coordinates.
   3       implicit real*8 (a-h,o-z)
   4       include 'DIMENSIONS'
   5       include 'COMMON.IOUNITS'
   6       include 'COMMON.VAR'
   7       include 'COMMON.CHAIN'
   8       include 'COMMON.GEO'
   9       include 'COMMON.LOCAL'
  10       include 'COMMON.DERIV'
  11       dimension temp(6,maxres),xx(3),gg(3)
  12       indmat(i,j)=((2*(nres-2)-i)*(i-1))/2+j-1
  13 *
  14 * Check the gradient of the virtual-bond and SC vectors in the internal
  15 * coordinates.
  16 *
  17       aincr=1.0d-7
  18       aincr2=5.0d-8
  19       call cartder
  20       write (iout,'(a)') '**************** dx/dalpha'
  21       write (iout,'(a)')
  22       do i=2,nres-1
  23         alphi=alph(i)
  24         alph(i)=alph(i)+aincr
  25         do k=1,3
  26           temp(k,i)=dc(k,nres+i)
  27         enddo
  28         call chainbuild
  29         do k=1,3
  30           gg(k)=(dc(k,nres+i)-temp(k,i))/aincr
  31           xx(k)=dabs((gg(k)-dxds(k,i))/(aincr*dabs(dxds(k,i))+aincr))
  32         enddo
  33         write (iout,'(i4,3e15.6/4x,3e15.6,3f9.3)')
  34      &  i,(gg(k),k=1,3),(dxds(k,i),k=1,3),(xx(k),k=1,3)
  35         write (iout,'(a)')
  36         alph(i)=alphi
  37         call chainbuild
  38       enddo
  39       write (iout,'(a)')
  40       write (iout,'(a)') '**************** dx/domega'
  41       write (iout,'(a)')
  42       do i=2,nres-1
  43         omegi=omeg(i)
  44         omeg(i)=omeg(i)+aincr
  45         do k=1,3
  46           temp(k,i)=dc(k,nres+i)
  47         enddo
  48         call chainbuild
  49         do k=1,3
  50           gg(k)=(dc(k,nres+i)-temp(k,i))/aincr
  51           xx(k)=dabs((gg(k)-dxds(k+3,i))/
  52      &          (aincr*dabs(dxds(k+3,i))+aincr))
  53         enddo
  54         write (iout,'(i4,3e15.6/4x,3e15.6,3f9.3)')
  55      &      i,(gg(k),k=1,3),(dxds(k+3,i),k=1,3),(xx(k),k=1,3)
  56         write (iout,'(a)')
  57         omeg(i)=omegi
  58         call chainbuild
  59       enddo
  60       write (iout,'(a)')
  61       write (iout,'(a)') '**************** dx/dtheta'
  62       write (iout,'(a)')
  63       do i=3,nres
  64         theti=theta(i)
  65         theta(i)=theta(i)+aincr
  66         do j=i-1,nres-1
  67           do k=1,3
  68             temp(k,j)=dc(k,nres+j)
  69           enddo
  70         enddo
  71         call chainbuild
  72         do j=i-1,nres-1
  73           ii = indmat(i-2,j)
  74 c         print *,'i=',i-2,' j=',j-1,' ii=',ii
  75           do k=1,3
  76             gg(k)=(dc(k,nres+j)-temp(k,j))/aincr
  77             xx(k)=dabs((gg(k)-dxdv(k,ii))/
  78      &            (aincr*dabs(dxdv(k,ii))+aincr))
  79           enddo
  80           write (iout,'(2i4,3e14.6/8x,3e14.6,3f9.3)')
  81      &        i,j,(gg(k),k=1,3),(dxdv(k,ii),k=1,3),(xx(k),k=1,3)
  82           write(iout,'(a)')
  83         enddo
  84         write (iout,'(a)')
  85         theta(i)=theti
  86         call chainbuild
  87       enddo
  88       write (iout,'(a)') '***************** dx/dphi'
  89       write (iout,'(a)')
  90       do i=4,nres
  91         phi(i)=phi(i)+aincr
  92         do j=i-1,nres-1
  93           do k=1,3
  94             temp(k,j)=dc(k,nres+j)
  95           enddo
  96         enddo
  97         call chainbuild
  98         do j=i-1,nres-1
  99           ii = indmat(i-2,j)
 100 c         print *,'ii=',ii
 101           do k=1,3
 102             gg(k)=(dc(k,nres+j)-temp(k,j))/aincr
 103             xx(k)=dabs((gg(k)-dxdv(k+3,ii))/
 104      &            (aincr*dabs(dxdv(k+3,ii))+aincr))
 105           enddo
 106           write (iout,'(2i4,3e14.6/8x,3e14.6,3f9.3)')
 107      &        i,j,(gg(k),k=1,3),(dxdv(k+3,ii),k=1,3),(xx(k),k=1,3)
 108           write(iout,'(a)')
 109         enddo
 110         phi(i)=phi(i)-aincr
 111         call chainbuild
 112       enddo
 113       write (iout,'(a)') '****************** ddc/dtheta'
 114       do i=1,nres-2
 115         thet=theta(i+2)
 116         theta(i+2)=thet+aincr
 117         do j=i,nres
 118           do k=1,3
 119             temp(k,j)=dc(k,j)
 120           enddo
 121         enddo
 122         call chainbuild
 123         do j=i+1,nres-1
 124           ii = indmat(i,j)
 125 c         print *,'ii=',ii
 126           do k=1,3
 127             gg(k)=(dc(k,j)-temp(k,j))/aincr
 128             xx(k)=dabs((gg(k)-dcdv(k,ii))/
 129      &           (aincr*dabs(dcdv(k,ii))+aincr))
 130           enddo
 131           write (iout,'(2i4,3e14.6/8x,3e14.6,3f9.3)')
 132      &           i,j,(gg(k),k=1,3),(dcdv(k,ii),k=1,3),(xx(k),k=1,3)
 133           write (iout,'(a)')
 134         enddo
 135         do j=1,nres
 136           do k=1,3
 137             dc(k,j)=temp(k,j)
 138           enddo
 139         enddo
 140         theta(i+2)=thet
 141       enddo
 142       write (iout,'(a)') '******************* ddc/dphi'
 143       do i=1,nres-3
 144         phii=phi(i+3)
 145         phi(i+3)=phii+aincr
 146         do j=1,nres
 147           do k=1,3
 148             temp(k,j)=dc(k,j)
 149           enddo
 150         enddo
 151         call chainbuild
 152         do j=i+2,nres-1
 153           ii = indmat(i+1,j)
 154 c         print *,'ii=',ii
 155           do k=1,3
 156             gg(k)=(dc(k,j)-temp(k,j))/aincr
 157             xx(k)=dabs((gg(k)-dcdv(k+3,ii))/
 158      &           (aincr*dabs(dcdv(k+3,ii))+aincr))
 159           enddo
 160           write (iout,'(2i4,3e14.6/8x,3e14.6,3f9.3)')
 161      &         i,j,(gg(k),k=1,3),(dcdv(k+3,ii),k=1,3),(xx(k),k=1,3)
 162           write (iout,'(a)')
 163         enddo
 164         do j=1,nres
 165           do k=1,3
 166             dc(k,j)=temp(k,j)
 167           enddo
 168         enddo
 169         phi(i+3)=phii
 170       enddo
 171       return
 172       end
 173 C----------------------------------------------------------------------------
 174       subroutine check_ecart
 175 C Check the gradient of the energy in Cartesian coordinates.
 176       implicit real*8 (a-h,o-z)
 177       include 'DIMENSIONS'
 178       include 'COMMON.CHAIN'
 179       include 'COMMON.DERIV'
 180       include 'COMMON.IOUNITS'
 181       include 'COMMON.VAR'
 182       include 'COMMON.CONTACTS'
 183       common /srutu/ icall
 184       dimension ggg(6),cc(3),xx(3),ddc(3),ddx(3),x(maxvar),g(maxvar)
 185       dimension grad_s(6,maxres)
 186       double precision energia(0:n_ene),energia1(0:n_ene)
 187       integer uiparm(1)
 188       double precision urparm(1)
 189       external fdum
 190       icg=1
 191       nf=0
 192       nfl=0
 193       call zerograd
 194       aincr=1.0D-7
 195       print '(a)','CG processor',me,' calling CHECK_CART.'
 196       nf=0
 197       icall=0
 198       call geom_to_var(nvar,x)
 199       call etotal(energia(0))
 200       etot=energia(0)
 201       call enerprint(energia(0))
 202       call gradient(nvar,x,nf,g,uiparm,urparm,fdum)
 203       icall =1
 204       do i=1,nres
 205         write (iout,'(i5,3f10.5)') i,(gradxorr(j,i),j=1,3)
 206       enddo
 207       do i=1,nres
 208         do j=1,3
 209           grad_s(j,i)=gradc(j,i,icg)
 210           grad_s(j+3,i)=gradx(j,i,icg)
 211         enddo
 212       enddo
 213       call flush(iout)
 214       write (iout,'(/a/)') 'Gradient in virtual-bond and SC vectors'
 215       do i=1,nres
 216         do j=1,3
 217           xx(j)=c(j,i+nres)
 218           ddc(j)=dc(j,i)
 219           ddx(j)=dc(j,i+nres)
 220         enddo
 221         do j=1,3
 222           dc(j,i)=dc(j,i)+aincr
 223           do k=i+1,nres
 224             c(j,k)=c(j,k)+aincr
 225             c(j,k+nres)=c(j,k+nres)+aincr
 226           enddo
 227           call etotal(energia1(0))
 228           etot1=energia1(0)
 229           ggg(j)=(etot1-etot)/aincr
 230           dc(j,i)=ddc(j)
 231           do k=i+1,nres
 232             c(j,k)=c(j,k)-aincr
 233             c(j,k+nres)=c(j,k+nres)-aincr
 234           enddo
 235         enddo
 236         do j=1,3
 237           c(j,i+nres)=c(j,i+nres)+aincr
 238           dc(j,i+nres)=dc(j,i+nres)+aincr
 239           call etotal(energia1(0))
 240           etot1=energia1(0)
 241           ggg(j+3)=(etot1-etot)/aincr
 242           c(j,i+nres)=xx(j)
 243           dc(j,i+nres)=ddx(j)
 244         enddo
 245         write (iout,'(i3,6(1pe12.5)/3x,6(1pe12.5)/)')
 246      &   i,(ggg(k),k=1,6),(grad_s(k,i),k=1,6)
 247       enddo
 248       return
 249       end
 250 c----------------------------------------------------------------------------
 251       subroutine check_ecartint
 252 C Check the gradient of the energy in Cartesian coordinates.
 253       implicit real*8 (a-h,o-z)
 254       include 'DIMENSIONS'
 255       include 'COMMON.CONTROL'
 256       include 'COMMON.CHAIN'
 257       include 'COMMON.DERIV'
 258       include 'COMMON.IOUNITS'
 259       include 'COMMON.VAR'
 260       include 'COMMON.CONTACTS'
 261       include 'COMMON.MD'
 262       include 'COMMON.LOCAL'
 263       include 'COMMON.SPLITELE'
 264       common /srutu/ icall
 265       dimension ggg(6),ggg1(6),cc(3),xx(3),ddc(3),ddx(3),x(maxvar),
 266      &  g(maxvar)
 267       dimension dcnorm_safe(3),dxnorm_safe(3)
 268       dimension grad_s(6,0:maxres),grad_s1(6,0:maxres)
 269       double precision phi_temp(maxres),theta_temp(maxres),
 270      &  alph_temp(maxres),omeg_temp(maxres)
 271       double precision energia(0:n_ene),energia1(0:n_ene)
 272       integer uiparm(1)
 273       double precision urparm(1)
 274       external fdum
 275       r_cut=2.0d0
 276       rlambd=0.3d0
 277       icg=1
 278       nf=0
 279       nfl=0
 280       call intout
 281 c      call intcartderiv
 282 c      call checkintcartgrad
 283       call zerograd
 284       aincr=1.0D-5
 285       write(iout,*) 'Calling CHECK_ECARTINT.'
 286       nf=0
 287       icall=0
 288       call geom_to_var(nvar,x)
 289       if (.not.split_ene) then
 290         call etotal(energia(0))
 291         etot=energia(0)
 292         call enerprint(energia(0))
 293         call flush(iout)
 294         write (iout,*) "enter cartgrad"
 295         call flush(iout)
 296         call cartgrad
 297         write (iout,*) "exit cartgrad"
 298         call flush(iout)
 299         icall =1
 300         do i=1,nres
 301           write (iout,'(i5,3f10.5)') i,(gradxorr(j,i),j=1,3)
 302         enddo
 303         do j=1,3
 304           grad_s(j,0)=gcart(j,0)
 305         enddo
 306         do i=1,nres
 307           do j=1,3
 308             grad_s(j,i)=gcart(j,i)
 309             grad_s(j+3,i)=gxcart(j,i)
 310           enddo
 311         enddo
 312       else
 313 !- split gradient check
 314         call zerograd
 315         call etotal_long(energia(0))
 316         call enerprint(energia(0))
 317         call flush(iout)
 318         write (iout,*) "enter cartgrad"
 319         call flush(iout)
 320         call cartgrad
 321         write (iout,*) "exit cartgrad"
 322         call flush(iout)
 323         icall =1
 324         write (iout,*) "longrange grad"
 325         do i=1,nres
 326           write (iout,'(i5,3f10.5,5x,3f10.5)') i,(gcart(j,i),j=1,3),
 327      &    (gxcart(j,i),j=1,3)
 328         enddo
 329         do j=1,3
 330           grad_s(j,0)=gcart(j,0)
 331         enddo
 332         do i=1,nres
 333           do j=1,3
 334             grad_s(j,i)=gcart(j,i)
 335             grad_s(j+3,i)=gxcart(j,i)
 336           enddo
 337         enddo
 338         call zerograd
 339         call etotal_short(energia(0))
 340         call enerprint(energia(0))
 341         call flush(iout)
 342         write (iout,*) "enter cartgrad"
 343         call flush(iout)
 344         call cartgrad
 345         write (iout,*) "exit cartgrad"
 346         call flush(iout)
 347         icall =1
 348         write (iout,*) "shortrange grad"
 349         do i=1,nres
 350           write (iout,'(i5,3f10.5,5x,3f10.5)') i,(gcart(j,i),j=1,3),
 351      &    (gxcart(j,i),j=1,3)
 352         enddo
 353         do j=1,3
 354           grad_s1(j,0)=gcart(j,0)
 355         enddo
 356         do i=1,nres
 357           do j=1,3
 358             grad_s1(j,i)=gcart(j,i)
 359             grad_s1(j+3,i)=gxcart(j,i)
 360           enddo
 361         enddo
 362       endif
 363       write (iout,'(/a/)') 'Gradient in virtual-bond and SC vectors'
 364       do i=0,nres
 365         do j=1,3
 366           xx(j)=c(j,i+nres)
 367           ddc(j)=dc(j,i)
 368           ddx(j)=dc(j,i+nres)
 369           do k=1,3
 370             dcnorm_safe(k)=dc_norm(k,i)
 371             dxnorm_safe(k)=dc_norm(k,i+nres)
 372           enddo
 373         enddo
 374         do j=1,3
 375           dc(j,i)=ddc(j)+aincr
 376           call chainbuild_cart
 377 #ifdef MPI
 378 c Broadcast the order to compute internal coordinates to the slaves.
 379 c          if (nfgtasks.gt.1)
 380 c     &      call MPI_Bcast(6,1,MPI_INTEGER,king,FG_COMM,IERROR)
 381 #endif
 382 c          call int_from_cart1(.false.)
 383           if (.not.split_ene) then
 384             call etotal(energia1(0))
 385             etot1=energia1(0)
 386           else
 387 !- split gradient
 388             call etotal_long(energia1(0))
 389             etot11=energia1(0)
 390             call etotal_short(energia1(0))
 391             etot12=energia1(0)
 392 c            write (iout,*) "etot11",etot11," etot12",etot12
 393           endif
 394 !- end split gradient
 395 c          write(iout,'(2i5,2(a,f15.10))')i,j," etot",etot," etot1",etot1
 396           dc(j,i)=ddc(j)-aincr
 397           call chainbuild_cart
 398 c          call int_from_cart1(.false.)
 399           if (.not.split_ene) then
 400             call etotal(energia1(0))
 401             etot2=energia1(0)
 402             ggg(j)=(etot1-etot2)/(2*aincr)
 403           else
 404 !- split gradient
 405             call etotal_long(energia1(0))
 406             etot21=energia1(0)
 407             ggg(j)=(etot11-etot21)/(2*aincr)
 408             call etotal_short(energia1(0))
 409             etot22=energia1(0)
 410             ggg1(j)=(etot12-etot22)/(2*aincr)
 411 !- end split gradient
 412 c            write (iout,*) "etot21",etot21," etot22",etot22
 413           endif
 414 c          write(iout,'(2i5,2(a,f15.10))')i,j," etot",etot," etot2",etot2
 415           dc(j,i)=ddc(j)
 416           call chainbuild_cart
 417         enddo
 418         do j=1,3
 419           dc(j,i+nres)=ddx(j)+aincr
 420           call chainbuild_cart
 421 c          write (iout,*) "i",i," j",j," dxnorm+ and dxnorm"
 422 c          write (iout,'(3f15.10)') (dc_norm(k,i+nres),k=1,3)
 423 c          write (iout,'(3f15.10)') (dxnorm_safe(k),k=1,3)
 424 c          write (iout,*) "dxnormnorm",dsqrt(
 425 c     &  dc_norm(1,i+nres)**2+dc_norm(2,i+nres)**2+dc_norm(3,i+nres)**2)
 426 c          write (iout,*) "dxnormnormsafe",dsqrt(
 427 c     &      dxnorm_safe(1)**2+dxnorm_safe(2)**2+dxnorm_safe(3)**2)
 428 c          write (iout,*)
 429           if (.not.split_ene) then
 430             call etotal(energia1(0))
 431             etot1=energia1(0)
 432           else
 433 !- split gradient
 434             call etotal_long(energia1(0))
 435             etot11=energia1(0)
 436             call etotal_short(energia1(0))
 437             etot12=energia1(0)
 438           endif
 439 !- end split gradient
 440 c          write(iout,'(2i5,2(a,f15.10))')i,j," etot",etot," etot1",etot1
 441           dc(j,i+nres)=ddx(j)-aincr
 442           call chainbuild_cart
 443 c          write (iout,*) "i",i," j",j," dxnorm- and dxnorm"
 444 c          write (iout,'(3f15.10)') (dc_norm(k,i+nres),k=1,3)
 445 c          write (iout,'(3f15.10)') (dxnorm_safe(k),k=1,3)
 446 c          write (iout,*)
 447 c          write (iout,*) "dxnormnorm",dsqrt(
 448 c     &  dc_norm(1,i+nres)**2+dc_norm(2,i+nres)**2+dc_norm(3,i+nres)**2)
 449 c          write (iout,*) "dxnormnormsafe",dsqrt(
 450 c     &      dxnorm_safe(1)**2+dxnorm_safe(2)**2+dxnorm_safe(3)**2)
 451           if (.not.split_ene) then
 452             call etotal(energia1(0))
 453             etot2=energia1(0)
 454             ggg(j+3)=(etot1-etot2)/(2*aincr)
 455           else
 456 !- split gradient
 457             call etotal_long(energia1(0))
 458             etot21=energia1(0)
 459             ggg(j+3)=(etot11-etot21)/(2*aincr)
 460             call etotal_short(energia1(0))
 461             etot22=energia1(0)
 462             ggg1(j+3)=(etot12-etot22)/(2*aincr)
 463 !- end split gradient
 464           endif
 465 c          write(iout,'(2i5,2(a,f15.10))')i,j," etot",etot," etot2",etot2
 466           dc(j,i+nres)=ddx(j)
 467           call chainbuild_cart
 468         enddo
 469         write (iout,'(i3,6(1pe12.5)/3x,6(1pe12.5)/3x,6(1pe12.5)/)')
 470      &   i,(ggg(k),k=1,6),(grad_s(k,i),k=1,6),(ggg(k)/grad_s(k,i),k=1,6)
 471         if (split_ene) then
 472           write (iout,'(i3,6(1pe12.5)/3x,6(1pe12.5)/3x,6(1pe12.5)/)')
 473      &   i,(ggg1(k),k=1,6),(grad_s1(k,i),k=1,6),(ggg1(k)/grad_s1(k,i),
 474      &   k=1,6)
 475          write (iout,'(i3,6(1pe12.5)/3x,6(1pe12.5)/3x,6(1pe12.5)/)')
 476      &   i,(ggg(k)+ggg1(k),k=1,6),(grad_s(k,i)+grad_s1(k,i),k=1,6),
 477      &   ((ggg(k)+ggg1(k))/(grad_s(k,i)+grad_s1(k,i)),k=1,6)
 478         endif
 479       enddo
 480       return
 481       end
 482 c-------------------------------------------------------------------------
 483       subroutine int_from_cart1(lprn)
 484       implicit real*8 (a-h,o-z)
 485       include 'DIMENSIONS'
 486 #ifdef MPI
 487       include 'mpif.h'
 488       integer ierror
 489 #endif
 490       include 'COMMON.IOUNITS'
 491       include 'COMMON.VAR'
 492       include 'COMMON.CHAIN'
 493       include 'COMMON.GEO'
 494       include 'COMMON.INTERACT'
 495       include 'COMMON.LOCAL'
 496       include 'COMMON.NAMES'
 497       include 'COMMON.SETUP'
 498       include 'COMMON.TIME1'
 499       logical lprn
 500       if (lprn) write (iout,'(/a)') 'Recalculated internal coordinates'
 501 #ifdef TIMING
 502       time01=MPI_Wtime()
 503 #endif
 504 #if defined(PARINT) && defined(MPI)
 505       do i=iint_start,iint_end
 506 #else
 507       do i=2,nres
 508 #endif
 509         dnorm1=dist(i-1,i)
 510         dnorm2=dist(i,i+1)
 511         do j=1,3
 512           c(j,maxres2)=0.5D0*(2*c(j,i)+(c(j,i-1)-c(j,i))/dnorm1
 513      &     +(c(j,i+1)-c(j,i))/dnorm2)
 514         enddo
 515         be=0.0D0
 516         if (i.gt.2) phi(i+1)=beta(i-2,i-1,i,i+1)
 517         omeg(i)=beta(nres+i,i,maxres2,i+1)
 518         alph(i)=alpha(nres+i,i,maxres2)
 519         theta(i+1)=alpha(i-1,i,i+1)
 520         vbld(i)=dist(i-1,i)
 521         vbld_inv(i)=1.0d0/vbld(i)
 522         vbld(nres+i)=dist(nres+i,i)
 523         if (itype(i).ne.10) then
 524           vbld_inv(nres+i)=1.0d0/vbld(nres+i)
 525         else
 526           vbld_inv(nres+i)=0.0d0
 527         endif
 528       enddo
 529 #if defined(PARINT) && defined(MPI)
 530        if (nfgtasks1.gt.1) then
 531 cd       write(iout,*) "iint_start",iint_start," iint_count",
 532 cd     &   (iint_count(i),i=0,nfgtasks-1)," iint_displ",
 533 cd     &   (iint_displ(i),i=0,nfgtasks-1)
 534 cd       write (iout,*) "Gather vbld backbone"
 535 cd       call flush(iout)
 536        time00=MPI_Wtime()
 537        call MPI_Allgatherv(vbld(iint_start),iint_count(fg_rank1),
 538      &   MPI_DOUBLE_PRECISION,vbld(1),iint_count(0),iint_displ(0),
 539      &   MPI_DOUBLE_PRECISION,FG_COMM1,IERR)
 540 cd       write (iout,*) "Gather vbld_inv"
 541 cd       call flush(iout)
 542        call MPI_Allgatherv(vbld_inv(iint_start),iint_count(fg_rank1),
 543      &   MPI_DOUBLE_PRECISION,vbld_inv(1),iint_count(0),iint_displ(0),
 544      &   MPI_DOUBLE_PRECISION,FG_COMM1,IERR)
 545 cd       write (iout,*) "Gather vbld side chain"
 546 cd       call flush(iout)
 547        call MPI_Allgatherv(vbld(iint_start+nres),iint_count(fg_rank1),
 548      &  MPI_DOUBLE_PRECISION,vbld(nres+1),iint_count(0),iint_displ(0),
 549      &   MPI_DOUBLE_PRECISION,FG_COMM1,IERR)
 550 cd       write (iout,*) "Gather vbld_inv side chain"
 551 cd       call flush(iout)
 552        call MPI_Allgatherv(vbld_inv(iint_start+nres),
 553      &   iint_count(fg_rank1),MPI_DOUBLE_PRECISION,vbld_inv(nres+1),
 554      &   iint_count(0),iint_displ(0),MPI_DOUBLE_PRECISION,FG_COMM1,IERR)
 555 cd       write (iout,*) "Gather theta"
 556 cd       call flush(iout)
 557        call MPI_Allgatherv(theta(iint_start+1),iint_count(fg_rank1),
 558      &   MPI_DOUBLE_PRECISION,theta(2),iint_count(0),iint_displ(0),
 559      &   MPI_DOUBLE_PRECISION,FG_COMM1,IERR)
 560 cd       write (iout,*) "Gather phi"
 561 cd       call flush(iout)
 562        call MPI_Allgatherv(phi(iint_start+1),iint_count(fg_rank1),
 563      &   MPI_DOUBLE_PRECISION,phi(2),iint_count(0),iint_displ(0),
 564      &   MPI_DOUBLE_PRECISION,FG_COMM1,IERR)
 565 #ifdef CRYST_SC
 566 cd       write (iout,*) "Gather alph"
 567 cd       call flush(iout)
 568        call MPI_Allgatherv(alph(iint_start),iint_count(fg_rank1),
 569      &   MPI_DOUBLE_PRECISION,alph(1),iint_count(0),iint_displ(0),
 570      &   MPI_DOUBLE_PRECISION,FG_COMM1,IERR)
 571 cd       write (iout,*) "Gather omeg"
 572 cd       call flush(iout)
 573        call MPI_Allgatherv(omeg(iint_start),iint_count(fg_rank1),
 574      &   MPI_DOUBLE_PRECISION,omeg(1),iint_count(0),iint_displ(0),
 575      &   MPI_DOUBLE_PRECISION,FG_COMM1,IERR)
 576 #endif
 577        time_gather=time_gather+MPI_Wtime()-time00
 578       endif
 579 #endif
 580       do i=1,nres-1
 581         do j=1,3
 582           dc_norm(j,i)=dc(j,i)*vbld_inv(i+1)
 583         enddo
 584       enddo
 585       do i=2,nres-1
 586         do j=1,3
 587           dc_norm(j,i+nres)=dc(j,i+nres)*vbld_inv(i+nres)
 588         enddo
 589       enddo
 590       if (lprn) then
 591       do i=2,nres
 592        write (iout,1212) restyp(itype(i)),i,vbld(i),
 593      &rad2deg*theta(i),rad2deg*phi(i),vbld(nres+i),
 594      &rad2deg*alph(i),rad2deg*omeg(i)
 595       enddo
 596       endif
 597  1212 format (a3,'(',i3,')',2(f15.10,2f10.2))
 598 #ifdef TIMING
 599       time_intfcart=time_intfcart+MPI_Wtime()-time01
 600 #endif
 601       return
 602       end
 603 c----------------------------------------------------------------------------
 604       subroutine check_eint
 605 C Check the gradient of energy in internal coordinates.
 606       implicit real*8 (a-h,o-z)
 607       include 'DIMENSIONS'
 608       include 'COMMON.CHAIN'
 609       include 'COMMON.DERIV'
 610       include 'COMMON.IOUNITS'
 611       include 'COMMON.VAR'
 612       include 'COMMON.GEO'
 613       common /srutu/ icall
 614       dimension x(maxvar),gana(maxvar),gg(maxvar)
 615       integer uiparm(1)
 616       double precision urparm(1)
 617       double precision energia(0:n_ene),energia1(0:n_ene),
 618      &  energia2(0:n_ene)
 619       character*6 key
 620       external fdum
 621       call zerograd
 622       aincr=1.0D-7
 623       print '(a)','Calling CHECK_INT.'
 624       nf=0
 625       nfl=0
 626       icg=1
 627       call geom_to_var(nvar,x)
 628       call var_to_geom(nvar,x)
 629       call chainbuild
 630       icall=1
 631       print *,'ICG=',ICG
 632       call etotal(energia(0))
 633       etot = energia(0)
 634       call enerprint(energia(0))
 635       print *,'ICG=',ICG
 636 #ifdef MPL
 637       if (MyID.ne.BossID) then
 638         call mp_bcast(x(1),8*(nvar+3),BossID,fgGroupID)
 639         nf=x(nvar+1)
 640         nfl=x(nvar+2)
 641         icg=x(nvar+3)
 642       endif
 643 #endif
 644       nf=1
 645       nfl=3
 646 cd    write (iout,'(10f8.3)') (rad2deg*x(i),i=1,nvar)
 647       call gradient(nvar,x,nf,gana,uiparm,urparm,fdum)
 648 cd    write (iout,'(i3,1pe14.4)') (i,gana(i),i=1,nvar)
 649       icall=1
 650       do i=1,nvar
 651         xi=x(i)
 652         x(i)=xi-0.5D0*aincr
 653         call var_to_geom(nvar,x)
 654         call chainbuild
 655         call etotal(energia1(0))
 656         etot1=energia1(0)
 657         x(i)=xi+0.5D0*aincr
 658         call var_to_geom(nvar,x)
 659         call chainbuild
 660         call etotal(energia2(0))
 661         etot2=energia2(0)
 662         gg(i)=(etot2-etot1)/aincr
 663         write (iout,*) i,etot1,etot2
 664         x(i)=xi
 665       enddo
 666       write (iout,'(/2a)')' Variable        Numerical       Analytical',
 667      &    '     RelDiff*100% '
 668       do i=1,nvar
 669         if (i.le.nphi) then
 670           ii=i
 671           key = ' phi'
 672         else if (i.le.nphi+ntheta) then
 673           ii=i-nphi
 674           key=' theta'
 675         else if (i.le.nphi+ntheta+nside) then
 676            ii=i-(nphi+ntheta)
 677            key=' alpha'
 678         else
 679            ii=i-(nphi+ntheta+nside)
 680            key=' omega'
 681         endif
 682         write (iout,'(i3,a,i3,3(1pd16.6))')
 683      & i,key,ii,gg(i),gana(i),
 684      & 100.0D0*dabs(gg(i)-gana(i))/(dabs(gana(i))+aincr)
 685       enddo
 686       return
 687       end