DMDAVecGetArrayDOFWrite#

Returns a multiple dimension array that shares data with the underlying vector and is indexed using the global dimensions.

Synopsis#

#include "petscdmda.h"   
PetscErrorCode DMDAVecGetArrayDOFWrite(DM da, Vec vec, void *array)

Not Collective

Input Parameters#

  • da - the distributed array

  • vec - the vector, either a vector the same size as one obtained with DMCreateGlobalVector() or DMCreateLocalVector()

Output Parameter#

  • array - the array

Notes#

Call DMDAVecRestoreArrayDOFWrite() once you have finished accessing the vector entries.

In C, the indexing is “backwards” from what expects: array[k][j][i][DOF] NOT array[i][j][k][DOF]!

In Fortran 90 you do not need a version of DMDAVecRestoreArrayDOF() just use DMDAVecRestoreArrayWriteF90() and declare your array with one higher dimension, see src/dm/tutorials/ex11f90.F

See Also#

DMDAGetGhostCorners(), DMDAGetCorners(), VecGetArray(), VecRestoreArray(), DMDAVecRestoreArray(), DMDAVecGetArray(), DMDAVecGetArrayDOF(), DMDAVecGetArrayWrite(), DMDAVecRestoreArrayWrite(), DMDAVecGetArrayWrite(), DMDAVecRestoreArrayWrite()

Level#

intermediate

Location#

src/dm/impls/da/dagetarray.c

Examples#

src/ksp/ksp/tutorials/ex34.c.html


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