test_Nearest3DCartLSToLS Subroutine

subroutine test_Nearest3DCartLSToLS(regridMethod, rc)

Arguments

Type IntentOptional Attributes Name
type(ESMF_RegridMethod_Flag), intent(in) :: regridMethod
integer, intent(out) :: rc

Source Code

 subroutine test_Nearest3DCartLSToLS(regridMethod,rc)
  type(ESMF_RegridMethod_Flag),intent(in) :: regridMethod
  integer, intent(out)  :: rc
  logical :: correct
  integer :: localrc


  type(ESMF_Field) :: srcField
  type(ESMF_Field) :: dstField
  type(ESMF_RouteHandle) :: routeHandle
  type(ESMF_ArraySpec) :: arrayspec
  type(ESMF_VM) :: vm

  real(ESMF_KIND_R8), pointer :: x(:),y(:),z(:)
  real(ESMF_KIND_R8), pointer :: temperature(:)
  real(ESMF_KIND_R8), pointer :: farrayPtr1D(:)
  integer :: numLocationsOnThisPet,i
  type(ESMF_LocStream) :: srcLocStream,dstLocStream

  integer :: localPet, petCount

  ! init success flag
  correct=.true.

  rc=ESMF_SUCCESS

  ! get global VM
  call ESMF_VMGetGlobal(vm, rc=localrc)
  if (ESMF_LogFoundError(localrc, &
      ESMF_ERR_PASSTHRU, &
      ESMF_CONTEXT, rcToReturn=rc)) return

  call ESMF_VMGet(vm, localPet=localPet, petCount=petCount, rc=localrc)
  if (ESMF_LogFoundError(localrc, &
      ESMF_ERR_PASSTHRU, &
      ESMF_CONTEXT, rcToReturn=rc)) return

  ! If we don't have 1 or 4 PETS then exit successfully
  if ((petCount .ne. 1) .and. (petCount .ne. 4)) then
    print*,'ERROR:  test must be run using exactly 1 or 4 PETS - detected ',petCount
    rc=ESMF_FAILURE
    return
  endif

  ! Setup Src LocStream
  numLocationsOnThisPet=6

  !-------------------------------------------------------------------
  ! Allocate and set example Field data
  !-------------------------------------------------------------------
  allocate(temperature(numLocationsOnThisPet))

  do i=1,numLocationsOnThisPet
    temperature(i)=80.0+i
  enddo


  !-------------------------------------------------------------------
  ! Create the LocStream:  Allocate space for the LocStream object,
  ! define the number and distribution of the locations.
  !-------------------------------------------------------------------
  srcLocStream=ESMF_LocStreamCreate(name="Equatorial Measurements", &
                                   localCount=numLocationsOnThisPet, &
                                   coordSys=ESMF_COORDSYS_CART, &
                                   rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble creating locStream'
    rc=ESMF_FAILURE
    return
  endif


  !-------------------------------------------------------------------
  ! Add key data (internally allocating memory).
  !-------------------------------------------------------------------
  call ESMF_LocStreamAddKey(srcLocStream,                 &
                            keyName="ESMF:Z",           &
                            KeyTypeKind=ESMF_TYPEKIND_R8, &
                            keyUnits="Units",           &
                            keyLongName="Longitude", rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble adding LocStream key for Lon'
    rc=ESMF_FAILURE
    return
  endif
  call ESMF_LocStreamAddKey(srcLocStream,                 &
                            keyName="ESMF:Y",           &
                            KeyTypeKind=ESMF_TYPEKIND_R8, &
                            keyUnits="Units",           &
                            keyLongName="Latitude", rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble adding LocStream key for Lat'
    rc=ESMF_FAILURE
    return
  endif
  call ESMF_LocStreamAddKey(srcLocStream,                 &
                            keyName="ESMF:X",           &
                            KeyTypeKind=ESMF_TYPEKIND_R8, &
                            keyUnits="Units",           &
                            keyLongName="Longitude", rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble adding LocStream key for Lon'
    rc=ESMF_FAILURE
    return
  endif
  !-------------------------------------------------------------------
  ! Get key data.
  !-------------------------------------------------------------------
  call ESMF_LocStreamGetKey(srcLocStream,                 &
                            localDE=0,                    &
                            keyName="ESMF:Z",           &
                            farray=z,                   &
                            rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble getting LocStream key for Latitude'
    rc=ESMF_FAILURE
    return
  endif
  call ESMF_LocStreamGetKey(srcLocStream,                 &
                            localDE=0,                    &
                            keyName="ESMF:Y",           &
                            farray=y,                   &
                            rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble getting LocStream key for Latitude'
    rc=ESMF_FAILURE
    return
  endif
  call ESMF_LocStreamGetKey(srcLocStream,                 &
                            localDE=0,                    &
                            keyName="ESMF:X",           &
                            farray=x,                   &
                            rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble getting LocStream key for Longitude'
    rc=ESMF_FAILURE
    return
  endif

  !-------------------------------------------------------------------
  ! Set key data.
  !-------------------------------------------------------------------
  do i=1,numLocationsOnThisPet
     x(i)=(i-1)*360.0/numLocationsOnThisPet
     y(i)=REAL(localPet,ESMF_KIND_R8)
     z(i)=(i-1)*20.0/numLocationsOnThisPet
  enddo


  !-------------------------------------------------------------------
  ! Create a Field on the Location Stream. In this case the
  ! Field is created from a user array, but any of the other
  ! Field create methods (e.g. from ArraySpec) would also apply.
  !-------------------------------------------------------------------
  srcField=ESMF_FieldCreate(srcLocStream,   &
                                     temperature, &
                                     name="temperature", &
                                     rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble creating field on locStream'
    rc=ESMF_FAILURE
    return
  endif

  ! setup Dst locStream

  !-------------------------------------------------------------------
  ! Create the LocStream:  Allocate space for the LocStream object,
  ! define the number and distribution of the locations.
  !-------------------------------------------------------------------
  dstLocStream=ESMF_LocStreamCreate(name="Equatorial Measurements", &
                                   localCount=numLocationsOnThisPet, &
                                   coordSys=ESMF_COORDSYS_CART, &
                                   rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble creating locStream'
    rc=ESMF_FAILURE
    return
  endif


  !-------------------------------------------------------------------
  ! Add key data (internally allocating memory).
  !-------------------------------------------------------------------
  call ESMF_LocStreamAddKey(dstLocStream,                 &
                            keyName="ESMF:Z",           &
                            KeyTypeKind=ESMF_TYPEKIND_R8, &
                            keyUnits="Units",           &
                            keyLongName="Latitude", rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble adding LocStream key for Lat'
    rc=ESMF_FAILURE
    return
  endif
  call ESMF_LocStreamAddKey(dstLocStream,                 &
                            keyName="ESMF:Y",           &
                            KeyTypeKind=ESMF_TYPEKIND_R8, &
                            keyUnits="Units",           &
                            keyLongName="Latitude", rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble adding LocStream key for Lat'
    rc=ESMF_FAILURE
    return
  endif
  call ESMF_LocStreamAddKey(dstLocStream,                 &
                            keyName="ESMF:X",           &
                            KeyTypeKind=ESMF_TYPEKIND_R8, &
                            keyUnits="Units",           &
                            keyLongName="Longitude", rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble adding LocStream key for Lon'
    rc=ESMF_FAILURE
    return
  endif



  !-------------------------------------------------------------------
  ! Get key data.
  !-------------------------------------------------------------------
   call ESMF_LocStreamGetKey(dstLocStream,                 &
                            localDE=0,                    &
                            keyName="ESMF:Z",           &
                            farray=z,                   &
                            rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble getting LocStream key for Latitude'
    rc=ESMF_FAILURE
    return
  endif

  call ESMF_LocStreamGetKey(dstLocStream,                 &
                            localDE=0,                    &
                            keyName="ESMF:Y",           &
                            farray=y,                   &
                            rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble getting LocStream key for Latitude'
    rc=ESMF_FAILURE
    return
  endif


  call ESMF_LocStreamGetKey(dstLocStream,                 &
                            localDE=0,                    &
                            keyName="ESMF:X",           &
                            farray=x,                   &
                            rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
    print*,'ERROR:  trouble getting LocStream key for Longitude'
    rc=ESMF_FAILURE
    return
  endif


  !-------------------------------------------------------------------
  ! Set key data.
  !-------------------------------------------------------------------
  !setting the coordinates with offset
  do i=1,numLocationsOnThisPet
     x(i)=(i-1)*360.0/numLocationsOnThisPet+0.001
     y(i)=REAL(localPet,ESMF_KIND_R8)
     z(i)=(i-1)*20.0/numLocationsOnThisPet
  enddo


  !-------------------------------------------------------------------
  ! Create a Field on the Location Stream. In this case the
  ! Field is created from a user array, but any of the other
  ! Field create methods (e.g. from ArraySpec) would also apply.
  !-------------------------------------------------------------------


  ! Create dest field
   call ESMF_ArraySpecSet(arrayspec, 1, ESMF_TYPEKIND_R8, rc=rc)

   dstField = ESMF_FieldCreate(dstLocStream, arrayspec, &
                        name="dest", rc=localrc)
   if (localrc /=ESMF_SUCCESS) then
     rc=ESMF_FAILURE
     return
   endif

   ! clear destination Field
   ! Should only be 1 localDE
   call ESMF_FieldGet(dstField, 0, farrayPtr1D,  rc=localrc)
   if (localrc /=ESMF_SUCCESS) then
        rc=ESMF_FAILURE
        return
   endif

   farrayPtr1D=0.0


  rc=ESMF_SUCCESS


  !!! Regrid forward from one locstream to another
  ! Regrid store
  call ESMF_FieldRegridStore( &
          srcField, &
          dstField=dstField, &
          routeHandle=routeHandle, &
          regridmethod=regridmethod, &
          rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
      rc=ESMF_FAILURE
      return
   endif



  ! Do regrid
  call ESMF_FieldRegrid(srcField, dstField, routeHandle, rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
      rc=ESMF_FAILURE
      return
   endif

  call ESMF_FieldRegridRelease(routeHandle, rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
      rc=ESMF_FAILURE
      return
   endif


   !check error
   call ESMF_FieldGet(dstField, 0, farrayPtr1D,  rc=localrc)
   if (localrc /=ESMF_SUCCESS) then
        rc=ESMF_FAILURE
        return
   endif

  ! loop through nodes and make sure interpolated values are reasonable
  ! interpolated point should always map to same index
  do i=1,numLocationsOnThisPet
    if ( abs( farrayPtr1D(i)-temperature(i) ) > 0.0001) then
      correct=.false.
      write(*,*) localPet,i,"::",farrayPtr1D(i),temperature(i)
    endif
  enddo

  deallocate(temperature)

  ! Destroy the Fields
   call ESMF_FieldDestroy(srcField, rc=localrc)
   if (localrc /=ESMF_SUCCESS) then
     rc=ESMF_FAILURE
     return
   endif

   call ESMF_FieldDestroy(dstField, rc=localrc)
   if (localrc /=ESMF_SUCCESS) then
     rc=ESMF_FAILURE
     return
   endif

  !destroy locStream objects
  call ESMF_LocStreamDestroy(srcLocStream, rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
      print*,'ERROR:  trouble destroying location stream'
      rc=ESMF_FAILURE
      return
   endif

  call ESMF_LocStreamDestroy(dstLocStream, rc=localrc)
  if (localrc /=ESMF_SUCCESS) then
      print*,'ERROR:  trouble destroying location stream'
      rc=ESMF_FAILURE
      return
   endif

  ! return answer based on correct flag
  if (correct) then
    rc=ESMF_SUCCESS
  else
    rc=ESMF_FAILURE
  endif


 end subroutine test_Nearest3DCartLSToLS