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