petsc-3.15.0 2021-04-05
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VecGetArrayReadAndMemType

Like VecGetArrayRead(), but if this is a CUDA vector and it is currently offloaded to GPU, the returned pointer will be a GPU pointer to the GPU memory that contains this processor's portion of the vector data. Otherwise, it functions as VecGetArrayRead().

Synopsis

#include "petscvec.h"   
PetscErrorCode VecGetArrayReadAndMemType(Vec x,const 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 VecRestoreArrayReadAndMemType().

See Also

VecRestoreArrayReadAndMemType(), VecGetArray(), VecRestoreArray(), VecGetArrayPair(), VecRestoreArrayPair(), VecGetArrayAndMemType()

Level

beginner

Location

src/vec/vec/interface/rvector.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages