petsc-3.15.0 2021-03-30
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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