petsc-3.10.5 2019-03-28
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# VecCreateSeqWithArray

Creates a standard,sequential array-style vector, where the user provides the array space to store the vector values.

### Synopsis

    #include "petscvec.h"
    PetscErrorCode  VecCreateSeqWithArray(MPI_Comm comm,PetscInt bs,PetscInt n,const PetscScalar array[],Vec *V)

Collective on MPI_Comm

### Input Parameter

| comm | - the communicator, should be PETSC_COMM_SELF
| bs | - the block size
| n | - the vector length
| array | - memory where the vector elements are to be stored.

### Output Parameter

V -the vector

### Notes

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

If the user-provided array is NULL, then VecPlaceArray() can be used at a later stage to SET the array for storing the vector values.

PETSc does NOT free the array when the vector is destroyed via VecDestroy(). The user should not free the array until the vector is destroyed.

### See Also

VecCreateMPIWithArray(), VecCreate(), VecDuplicate(), VecDuplicateVecs(),
VecCreateGhost(), VecCreateSeq(), VecPlaceArray()

### Level

intermediate

### Location

src/vec/vec/impls/seq/bvec2.c

### Examples

src/mat/examples/tutorials/ex2.c.html
src/ksp/ksp/examples/tutorials/ex13.c.html
src/ksp/ksp/examples/tutorials/ex30.c.html
src/ksp/ksp/examples/tutorials/ex13f90.F90.html
src/ksp/ksp/examples/tutorials/ex61f.F90.html
Index of all Vec routines
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Index of all manual pages