[petsc-users] transfer vector data diagonally on DA

[khalid ashraf]

Hi, 
I want to transfer vector data diagonally in the DA grid like 
 for (k=zs; k<zs+zm; k++) {
  for (j=ys; j<ys+ym; j++) {
  for (i=xs; i<xs+xm; i++) {
if(i!=mx-1 || j!=my-1 || k!=mz-1){
u_new[k+1][j+1][i+1]=u[k][j][i];}
}}}

Could you please suggest the best way to do it minimizing interprocessor assignments.

Thanks in advance. 
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