VecCreateMPICUDAWithArray#

Creates a parallel, array-style vector using CUDA, where the user provides the device array space to store the vector values.

Synopsis#

#include <petscvec.h> 
PetscErrorCode VecCreateMPICUDAWithArray(MPI_Comm comm, PetscInt bs, PetscInt n, PetscInt N, const PetscScalar gpuarray[], Vec *v)

Collective

Input Parameters#

  • 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)

  • gpuarray - the user provided GPU array to store the vector values

Output Parameter#

  • v - the vector

Notes#

See VecCreateSeqCUDAWithArray() for further discussion, this routine shares identical semantics.

See Also#

VecCreateMPICUDA(), VecCreateSeqCUDAWithArray(), VecCreateMPIWithArray(), VecCreateSeqWithArray(), VecCreate(), VecDuplicate(), VecDuplicateVecs(), VecCreateGhost(), VecCreateMPI(), VecCreateGhostWithArray(), VecPlaceArray()

Level#

intermediate

Location#

src/vec/vec/impls/mpi/cupm/cuda/vecmpicupm.cu

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Index of all Vec routines
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