Actual source code: ex4f90.F90

petsc-master 2020-10-26
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  1: ! setting up DMPlex for finite elements
  2: ! Contributed by Pratheek Shanthraj <p.shanthraj@mpie.de>
  3:       program main
  4:       implicit none
  5: #include <petsc/finclude/petsc.h90>
  6:       DM :: dm
  7:       PetscDS :: prob
  8:       PetscInt :: dim = 3
  9:       PetscBool :: simplex = PETSC_TRUE
 10:       PetscBool :: interpolate = PETSC_TRUE
 11:       PetscBool :: refinementUniform = PETSC_FALSE
 12:       PetscReal :: refinementLimit = 0.0
 13:       PetscErrorCode :: ierr

 15:       call PetscInitialize(PETSC_NULL_CHARACTER, ierr)
 16:       if (ierr .ne. 0) then
 17:         print*,'Unable to initialize PETSc'
 18:         stop
 19:       endif
 20:       call DMPlexCreateDoublet(PETSC_COMM_WORLD, dim, simplex,interpolate, refinementUniform, refinementLimit, dm, ierr);CHKERRA(ierr)
 21:       call DMSetUp(dm,ierr);CHKERRA(ierr)
 22:       call PetscDSCreate(PETSC_COMM_WORLD,prob,ierr);CHKERRA(ierr)
 23:       call DMGetDS(dm,prob,ierr);CHKERRA(ierr)

 25:       call DMDestroy(dm, ierr);CHKERRA(ierr)
 26:       call PetscFinalize(ierr)
 27:       end program main