#include "petscvec.h" PetscErrorCode VecStrideMaxAll(Vec v,PetscInt idex[],PetscReal nrm[])Collective on Vec
| v | - the vector | 
| index | - the location where the maximum occurred (not supported, pass NULL, if you need this, send mail to petsc-maint@mcs.anl.gov to request it) | |
| nrm | - the maximum values of each subvector | 
The dimension of nrm must be the same as the vector block size