#include "petscvec.h" PetscErrorCode VecCreateMPICUDAWithArrays(MPI_Comm comm,PetscInt bs,PetscInt n,PetscInt N,const PetscScalar cpuarray,const PetscScalar gpuarray,Vec *vv)Collective
|comm||- the MPI communicator to use|
|bs||- block size, same meaning as VecSetBlockSize()|
|n||- local vector length, cannot be PETSC_DECIDE|
|N||- global vector length (or PETSC_DECIDE to have calculated)|
|cpuarray||- the user provided CPU array to store the vector values|
|gpuarray||- the user provided GPU array to store the vector values|
|vv||- the vector|
Use VecDuplicate() or VecDuplicateVecs() to form additional vectors of the same type as an existing vector.
PETSc does NOT free the provided arrays when the vector is destroyed via VecDestroy(). The user should not free the array until the vector is destroyed.