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

[丁老师]

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 "<<seqarry[i]<<endl;