VecCreateMPICUDA#

Creates a standard, parallel, array-style vector for CUDA devices.

Synopsis#

#include <petscvec.h> 
PetscErrorCode VecCreateMPICUDA(MPI_Comm comm, PetscInt n, PetscInt N, Vec *v)

Collective, Possibly Synchronous

Input Parameters#

  • comm - the MPI communicator to use

  • n - local vector length (or PETSC_DECIDE to have calculated if N is given)

  • N - global vector length (or PETSC_DETERMINE to have calculated if n is given)

Output Parameter#

  • v - the vector

Notes#

Use VecDuplicate() or VecDuplicateVecs() to form additional vectors of the same type as an existing vector.

This function may initialize PetscDevice, which may incur a device synchronization.

See Also#

VecCreateMPICUDAWithArray(), VecCreateMPICUDAWithArrays(), VecCreateSeqCUDA(), VecCreateSeq(), VecCreateMPI(), VecCreate(), VecDuplicate(), VecDuplicateVecs(), VecCreateGhost(), VecCreateMPIWithArray(), VecCreateGhostWithArray(), VecMPISetGhost()`

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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