petsc-3.13.6 2020-09-29
VecMDot
Computes vector multiple dot products.
Synopsis
#include "petscvec.h"
PetscErrorCode VecMDot(Vec x,PetscInt nv,const Vec y[],PetscScalar val[])
Collective on Vec
Input Parameters
| x | - one vector
|
| nv | - number of vectors
|
| y | - array of vectors.
|
Output Parameter
val -array of the dot products (does not allocate the array)
Notes for Users of Complex Numbers
For complex vectors, VecMDot() computes
val = (x,y) = y^H x,
where y^H denotes the conjugate transpose of y.
Use VecMTDot() for the indefinite form
val = (x,y) = y^T x,
where y^T denotes the transpose of y.
See Also
VecMTDot(), VecDot()
Level
intermediate
Location
src/vec/vec/interface/rvector.c
Examples
src/vec/vec/tutorials/ex1.c.html
src/vec/vec/tutorials/ex1f.F90.html
src/vec/vec/tutorials/ex1f90.F90.html
src/vec/vec/tutorials/ex20f90.F90.html
Implementations
VecMDot_MPICUDA in src/vec/vec/impls/mpi/mpicuda/mpicuda.cu
VecMDot_MPIViennaCL in src/vec/vec/impls/mpi/mpiviennacl/mpiviennacl.cxx
VecMDot_MPI in src/vec/vec/impls/mpi/pvec2.c
VecMDot_Nest in src/vec/vec/impls/nest/vecnest.c
VecMDot_Seq in src/vec/vec/impls/seq/dvec2.c
VecMDot_Seq in src/vec/vec/impls/seq/dvec2.c
VecMDot_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
VecMDot_SeqViennaCL in src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages