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# VECNEST

VECNEST = “nest” - Vector type consisting of nested subvectors, each stored separately.

## Notes

This vector type reduces the number of copies for certain solvers applied to multi-physics problems. It is usually used with `MATNEST` and `DMCOMPOSITE` via `DMSetVecType()`.

## See Also

Vectors and Parallel Data, `Vec`, `VecType`, `VecCreate()`, `VecCreateNest()`, `MatCreateNest()`

## Level

intermediate

## Location

src/vec/vec/impls/nest/vecnest.c

## Examples

src/ksp/ksp/tutorials/ex27.c

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