Actual source code: ex1f.F90

  1: !
  2: !
  3: !  Formatted test for IS general routines
  4: !
  5:       program main
  6: #include <petsc/finclude/petscis.h>
  7:       use petscis
  8:       implicit none

 10:        PetscErrorCode ierr
 11:        PetscInt i,n,indices(1004)
 12:        PetscInt, pointer :: ii(:)
 13:        PetscMPIInt size,rank
 14:        IS          is,newis
 15:        PetscBool   flag,compute,permanent

 17:        PetscCallA(PetscInitialize(ierr))
 18:        PetscCallMPIA(MPI_Comm_rank(PETSC_COMM_WORLD,rank,ierr))
 19:        PetscCallMPIA(MPI_Comm_size(PETSC_COMM_WORLD,size,ierr))

 21: !     Test IS of size 0

 23:        n = 0
 24:        PetscCallA(ISCreateGeneral(PETSC_COMM_SELF,n,indices,PETSC_COPY_VALUES,is,ierr))
 25:        PetscCallA(ISGetLocalSize(is,n,ierr))
 26:        PetscCheckA(n .eq. 0,PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error getting size of zero IS')
 27:        PetscCallA(ISDestroy(is,ierr))

 29: !     Create large IS and test ISGetIndices(,ierr))
 30: !     fortran indices start from 1 - but IS indices start from 0
 31:       n = 1000 + rank
 32:       do 10, i=1,n
 33:         indices(i) = rank + i-1
 34:  10   continue
 35:       PetscCallA(ISCreateGeneral(PETSC_COMM_SELF,n,indices,PETSC_COPY_VALUES,is,ierr))
 36:       PetscCallA(ISGetIndicesF90(is,ii,ierr))
 37:       do 20, i=1,n
 38:         PetscCheckA(ii(i) .eq. indices(i),PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error getting indices')
 39:  20   continue
 40:       PetscCallA(ISRestoreIndicesF90(is,ii,ierr))

 42: !     Check identity and permutation

 44:       compute = PETSC_TRUE
 45:       permanent = PETSC_FALSE
 46:       PetscCallA(ISPermutation(is,flag,ierr))
 47:       PetscCheckA(.not. flag,PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error checking permutation')
 48:       PetscCallA(ISGetInfo(is,IS_PERMUTATION,IS_LOCAL,compute,flag,ierr))
 49:       PetscCallA(ISIdentity(is,flag,ierr))
 50:       PetscCheckA((rank .ne. 0) .or. flag,PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error checking identity')
 51:       PetscCheckA((rank .eq. 0) .or. (.not. flag),PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error checking identity')
 52:       PetscCallA(ISSetInfo(is,IS_PERMUTATION,IS_LOCAL,permanent,PETSC_TRUE,ierr))
 53:       PetscCallA(ISSetInfo(is,IS_IDENTITY,IS_LOCAL,permanent,PETSC_TRUE,ierr))
 54:       PetscCallA(ISGetInfo(is,IS_PERMUTATION,IS_LOCAL,compute,flag,ierr))
 55:       PetscCheckA(flag,PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error checking permutation second time')
 56:       PetscCallA(ISGetInfo(is,IS_IDENTITY,IS_LOCAL,compute,flag,ierr))
 57:       PetscCheckA(flag,PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error checking identity second time')
 58:       PetscCallA(ISClearInfoCache(is,PETSC_TRUE,ierr))

 60: !     Check equality of index sets

 62:       PetscCallA(ISEqual(is,is,flag,ierr))
 63:       PetscCheckA(flag,PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error checking equal')

 65: !     Sorting

 67:       PetscCallA(ISSort(is,ierr))
 68:       PetscCallA(ISSorted(is,flag,ierr))
 69:       PetscCheckA(flag,PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error checking sorted')

 71: !     Thinks it is a different type?

 73:       PetscCallA(PetscObjectTypeCompare(is,ISSTRIDE,flag,ierr))
 74:       PetscCheckA(.not. flag,PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error checking stride')
 75:       PetscCallA(PetscObjectTypeCompare(is,ISBLOCK,flag,ierr))
 76:       PetscCheckA(.not. flag,PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error checking block')

 78:       PetscCallA(ISDestroy(is,ierr))

 80: !     Inverting permutation

 82:       do 30, i=1,n
 83:         indices(i) = n - i
 84:  30   continue

 86:       PetscCallA(ISCreateGeneral(PETSC_COMM_SELF,n,indices,PETSC_COPY_VALUES,is,ierr))
 87:       PetscCallA(ISSetPermutation(is,ierr))
 88:       PetscCallA(ISInvertPermutation(is,PETSC_DECIDE,newis,ierr))
 89:       PetscCallA(ISGetIndicesF90(newis,ii,ierr))
 90:       do 40, i=1,n
 91:         PetscCheckA(ii(i) .eq. n - i,PETSC_COMM_SELF,PETSC_ERR_PLIB,'Error getting permutation indices')
 92:  40   continue
 93:       PetscCallA(ISRestoreIndicesF90(newis,ii,ierr))
 94:       PetscCallA(ISDestroy(newis,ierr))
 95:       PetscCallA(ISDestroy(is,ierr))
 96:       PetscCallA(PetscFinalize(ierr))
 97:       end

 99: !/*TEST
100: !
101: !   test:
102: !     nsize: {{1 2 3 4 5}}
103: !     output_file: output/ex1_1.out
104: !
105: !TEST*/