petsc-3.14.6 2021-03-30

VecStrideMinAll

Computes the minimum of subvector of a vector defined by a starting point and a stride and optionally its location.

#include "petscvec.h" 
PetscErrorCode  VecStrideMinAll(Vec v,PetscInt idex[],PetscReal nrm[])

Collective on Vec

- the vector

	idex	- the location where the minimum occurred (not supported, pass NULL, if you need this, send mail to [email protected] to request it)
	nrm	- the minimums of each subvector

One must call VecSetBlockSize() before this routine to set the stride information, or use a vector created from a multicomponent DMDA.

The dimension of nrm must be the same as the vector block size

advanced