VecCreateMPIViennaCLWithArray#
Creates a parallel, array-style vector, where the user provides the viennacl vector to store the vector values.
Synopsis#
#include "petscvec.h"
PetscErrorCode VecCreateMPIViennaCLWithArray(MPI_Comm comm, PetscInt bs, PetscInt n, PetscInt N, const ViennaCLVector *array, Vec *vv) PeNS
Collective
Input Parameters#
comm - the MPI communicator to use
bs - block size, same meaning as in
VecSetBlockSize()n - local vector length, cannot be
PETSC_DECIDEN - global vector length (or
PETSC_DECIDEto have calculated)array - the user provided GPU array to store the vector values
Output Parameter#
vv - the vector
Notes#
Use VecDuplicate() or VecDuplicateVecs() to form additional vectors of the
same type as an existing vector.
If the user-provided array is NULL, then VecViennaCLPlaceArray() can be used
at a later stage to SET the array for storing the vector values.
PETSc does NOT free the array when the vector is destroyed via VecDestroy().
The user should not free the array until the vector is destroyed.
See Also#
VecCreateSeqViennaCLWithArray(), VecCreateMPIWithArray(), VecCreateSeqWithArray(),
VecCreate(), VecCreateMPI(), VecCreateGhostWithArray(), VecViennaCLPlaceArray()
Level#
intermediate
Location#
src/vec/vec/impls/mpi/mpiviennacl/mpiviennacl.cxx
Index of all Vec routines
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Index of all manual pages