! $Id: ESMF_FieldRepDimEx.F90,v 1.20 2011/06/30 05:58:53 theurich Exp $ ! ! Earth System Modeling Framework ! Copyright 2002-2011, University Corporation for Atmospheric Research, ! Massachusetts Institute of Technology, Geophysical Fluid Dynamics ! Laboratory, University of Michigan, National Centers for Environmental ! Prediction, Los Alamos National Laboratory, Argonne National Laboratory, ! NASA Goddard Space Flight Center. ! Licensed under the University of Illinois-NCSA License. ! !============================================================================== ! program ESMF_FieldRepDimEx !------------------------------------------------------------------------------ !ESMF_MULTI_PROC_EXAMPLE String used by test script to count examples. !============================================================================== ! !PROGRAM: ESMF_FieldRepDimEx - Field with replicated dimension ! ! !DESCRIPTION: ! ! This program shows examples of Field with replicated dimension !----------------------------------------------------------------------------- #include "ESMF.h" ! ESMF Framework module use ESMF_TestMod use ESMF implicit none ! Local variables type(ESMF_VM) :: vm type(ESMF_Field) :: field type(ESMF_Grid) :: grid type(ESMF_DistGrid) :: distgrid type(ESMF_ArraySpec):: arrayspec ! local arguments used to get info from field type(ESMF_Grid) :: grid1 type(ESMF_Array) :: array type(ESMF_TypeKind_Flag) :: typekind integer :: dimCount, gridrank_repdim type(ESMF_StaggerLoc) :: lstaggerloc integer, dimension(4) :: lgridToFieldMap integer, dimension(1) :: lungriddedLBound integer, dimension(1) :: lungriddedUBound integer, dimension(2,1) :: ltotalLWidth integer, dimension(2,1) :: ltotalUWidth ! local arguments used to verify field get integer :: i, ii, ij, ik integer, dimension(3) :: felb, feub, fclb, fcub, ftlb, ftub integer, dimension(3) :: fec, fcc, ftc real(ESMF_KIND_R8), dimension(:,:,:), pointer :: farray real(ESMF_KIND_R8), dimension(:,:,:), pointer :: farray1 real(ESMF_KIND_R8) :: n integer, dimension(3,1) :: aelb, aeub, aclb, acub, atlb, atub integer, dimension(:), allocatable :: audlb, audub integer :: arank, adimCount integer :: finalrc, rc integer :: gridToFieldMap(4) = (/1,0,2,0/) ! !Set finalrc to success finalrc = ESMF_SUCCESS call ESMF_Initialize(vm=vm, defaultlogfilename="FieldRepDimEx.Log", & logkindflag=ESMF_LOGKIND_MULTI, rc=rc) if (rc /= ESMF_SUCCESS) call ESMF_Finalize(endflag=ESMF_END_ABORT) if (.not. ESMF_TestMinPETs(4, ESMF_SRCLINE)) & call ESMF_Finalize(endflag=ESMF_END_ABORT) !>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>% !-------------------------------- Example ----------------------------- !>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>%>% !BOE !\subsubsection{Create a Field with replicated dimensions} !\label{sec:field:usage:create_repdim} ! ! \begin{sloppypar} ! In this example an {\tt ESMF\_Field} with replicated dimension is created from an {\tt ESMF\_Grid} and ! an {\tt ESMF\_Arrayspec}. A user can also use other {\tt ESMF\_FieldCreate()} methods to create replicated ! dimension Field, this example illustrates the key concepts and use of a replicated dimension Field. ! \end{sloppypar} ! ! Normally gridToFieldMap argument in {\tt ESMF\_FieldCreate()} should not contain ! 0 value entries. However, for Field with replicated dimension, a 0 entry in gridToFieldMap ! indicates the corresponding Grid dimension is replicated in the Field. In such a Field, ! the rank of the Field is no longer necessarily greater than its Grid rank. ! An example will make this clear. We will start by creating Distgrid and Grid. ! !EOE !BOC ! create 4D distgrid distgrid = ESMF_DistGridCreate(minIndex=(/1,1,1,1/), & maxIndex=(/6,4,6,4/), regDecomp=(/2,1,2,1/), rc=rc) if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE ! create 4D grid on top of the 4D distgrid grid = ESMF_GridCreate(distgrid=distgrid, name="grid", rc=rc) if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE ! create 3D arrayspec call ESMF_ArraySpecSet(arrayspec, 3, ESMF_TYPEKIND_R8, rc=rc) if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE !EOC !BOE ! In this example, a user creates a 3D Field with replicated dimension ! replicated along the 2nd and 4th dimension of its underlying 4D Grid. ! In addition, the 2nd dimension of the Field is ungridded (why?). The 1st and ! 3rd dimensions of the Field have halos. !EOE !BOC ! create field, 2nd and 4th dimensions of the Grid are replicated field = ESMF_FieldCreate(grid, arrayspec, indexflag=ESMF_INDEX_DELOCAL, & gridToFieldMap=(/1,0,2,0/), & ungriddedLBound=(/1/), ungriddedUBound=(/4/), & totalLWidth=(/1,1/), totalUWidth=(/4,5/), & staggerloc=ESMF_STAGGERLOC_CORNER, & rc=rc) if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE ! get basic information from the field call ESMF_FieldGet(field, grid=grid1, array=array, typekind=typekind, & dimCount=dimCount, staggerloc=lstaggerloc, & gridToFieldMap=lgridToFieldMap, ungriddedLBound=lungriddedLBound, & ungriddedUBound=lungriddedUBound, totalLWidth=ltotalLWidth, & totalUWidth=ltotalUWidth, rc=rc) if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE ! get bounds information from the field call ESMF_FieldGet(field, localDe=0, farrayPtr=farray, & exclusiveLBound=felb, exclusiveUBound=feub, exclusiveCount=fec, & computationalLBound=fclb, computationalUBound=fcub, & computationalCount=fcc, totalLBound=ftlb, totalUBound=ftub, & totalCount=ftc, rc=rc) if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE !BOE ! Next we verify that the field and array bounds agree with each other !EOE !BOC call ESMF_ArrayGet(array, rank=arank, dimCount=adimCount, rc=rc) if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE gridrank_repdim = 0 do i = 1, size(gridToFieldMap) if(gridToFieldMap(i) == 0) gridrank_repdim = gridrank_repdim + 1 enddo !EOC !BOE ! Number of undistributed dimension of the array {\it X} is computed from ! total rank of the array {\it A}, the dimension count of its underlying distgrid ! {\it B} and number of replicated dimension in the distgrid {\it C}. ! We have the following formula: X = A - (B - C) !EOE !BOC allocate(audlb(arank-adimCount+gridrank_repdim), & audub(arank-adimCount+gridrank_repdim)) call ESMF_ArrayGet(array, exclusiveLBound=aelb, exclusiveUBound=aeub, & computationalLBound=aclb, computationalUBound=acub, & totalLBound=atlb, totalUBound=atub, & undistLBound=audlb, undistUBound=audub, & rc=rc) if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE ! verify the ungridded bounds from field match ! undistributed bounds from its underlying array do i = 1, arank-adimCount if(lungriddedLBound(i) .ne. audlb(i) ) & rc = ESMF_FAILURE enddo if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE do i = 1, arank-adimCount if(lungriddedUBound(i) .ne. audub(i) ) & rc = ESMF_FAILURE enddo if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE !BOE ! We then verify the data in the replicated dimension Field can be updated and accessed. !EOE !BOC do ik = ftlb(3), ftub(3) do ij = ftlb(2), ftub(2) do ii = ftlb(1), ftub(1) farray(ii,ij,ik) = ii+ij*2+ik enddo enddo enddo ! access and verify call ESMF_FieldGet(field, localDe=0, farrayPtr=farray1, & rc=rc) if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE do ik = ftlb(3), ftub(3) do ij = ftlb(2), ftub(2) do ii = ftlb(1), ftub(1) n = ii+ij*2+ik if(farray1(ii,ij,ik) .ne. n ) rc = ESMF_FAILURE enddo enddo enddo if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE ! release resources call ESMF_FieldDestroy(field) call ESMF_GridDestroy(grid) call ESMF_DistGridDestroy(distgrid) !EOC print *, "Field with replicated dimension returned" if(rc .ne. ESMF_SUCCESS) finalrc = ESMF_FAILURE !------------------------------------------------------------------------- call ESMF_Finalize(rc=rc) !------------------------------------------------------------------------- if (rc.NE.ESMF_SUCCESS) finalrc = ESMF_FAILURE if (finalrc.EQ.ESMF_SUCCESS) then print *, "PASS: ESMF_FieldRepDimEx.F90" else print *, "FAIL: ESMF_FieldRepDimEx.F90" end if end program ESMF_FieldRepDimEx