[petsc-users] confusion about VecGetArray on a sequential vec

[Dave May]

When you called
  VecCreateSeq(PETSC_COMM_SELF,5,&seqx);
you created a sequential vector on each process - not just on rank 0.


On 1 August 2013 12:11, 丁老师 <ztdepyahoo at 163.com> wrote:

> I create a sequential vec seqx, and i get it value with VecGetArrary,
> since seqx is created  only in process 0, why every process can output the
> value of the seqx.
>
>
>  VecCreateSeq(PETSC_COMM_SELF,5,&seqx);
>  VecView(seqx,PETSC_VIEWER_STDOUT_WORLD);
>  double *seqarry;
>  VecGetArray(seqx,&seqarry);
>
>  for(int i=0;i<n;i++)
>    cout<<MyRank<<"  seqarry "<<s eqarry[i]<<endl;
>
>
>
>
>
>
>
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