PETSc version 3.16.6
VecStrideGatherAll
Gathers all the single components from a multi-component vector into separate vectors.
Synopsis
#include "petscvec.h"
PetscErrorCode VecStrideGatherAll(Vec v,Vec s[],InsertMode addv)
Collective on Vec
Input Parameters
Output Parameter
| s | - the location where the subvectors are stored
|
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 gathers
the arrays (x[start],x[start+stride],x[start+2*stride], ....)
for start=0,1,2,...bs-1
The parallel layout of the vector and the subvector must be the same;
i.e., nlocal of v = stride*(nlocal of s)
Not optimized; could be easily
See Also
VecStrideNorm(), VecStrideScatter(), VecStrideMin(), VecStrideMax(), VecStrideGather(),
VecStrideScatterAll()
Level
advanced
Location
src/vec/vec/utils/vinv.c
Examples
src/vec/vec/tutorials/ex16.c.html
src/vec/vec/tutorials/ex16f.F90.html
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages