PETSc version 3.17.4
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VecGetArrayWriteAndMemType

Like VecGetArrayWrite(), but if this is a device vector it will aways return a device pointer to the device memory that contains this processor's portion of the vector data.

Synopsis

#include "petscvec.h"   
PetscErrorCode VecGetArrayWriteAndMemType(Vec x,PetscScalar **a,PetscMemType *mtype)
Not Collective

Input Parameter

x - the vector

Output Parameters

a - the array
mtype - memory type of the array

Notes

The array must be returned using a matching call to VecRestoreArrayWriteAndMemType(), where it will label the device memory as most recent.

See Also

VecRestoreArrayWriteAndMemType(), VecGetArrayReadAndMemType(), VecGetArrayAndMemType(), VecGetArray(), VecRestoreArray(), VecGetArrayPair(), VecRestoreArrayPair(),

Level

beginner

Location

src/vec/vec/interface/rvector.c

Implementations

VecGetArrayWriteAndMemType_SeqKokkos in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
VecGetArrayWriteAndMemType_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda.c

Index of all Vec routines
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