VecStrideSumAll#

Computes the sums of subvectors of a vector defined by a stride.

Synopsis#

#include "petscvec.h" 
PetscErrorCode VecStrideSumAll(Vec v, PetscScalar sums[])

Collective

Input Parameter#

  • v - the vector

Output Parameter#

  • sums - the sums

Notes#

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

If x is the array representing the vector x then this computes the sum of the array (x[start],x[start+stride],x[start+2*stride], ….) for each start < stride

See Also#

Vec, VecSum(), VecStrideGather(), VecStrideScatter(), VecStrideMin(), VecStrideMax()

Level#

advanced

Location#

src/vec/vec/utils/vinv.c


Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages