VecMDotBegin#

Starts a split phase multiple dot product computation.

Synopsis#

#include "petscvec.h"    
PetscErrorCode VecMDotBegin(Vec x, PetscInt nv, const Vec y[], PetscScalar result[])

Input Parameters#

x - the first vector
nv - number of vectors
y - array of vectors
result - where the result will go (can be NULL)

Notes#

Each call to VecMDotBegin() should be paired with a call to VecMDotEnd().

See Also#

VecMDotEnd(), VecNormBegin(), VecNormEnd(), VecNorm(), VecDot(), VecMDot(), VecTDotBegin(), VecTDotEnd(), VecMTDotBegin(), VecMTDotEnd(), PetscCommSplitReductionBegin()

Level#

advanced

Location#

src/vec/vec/utils/comb.c

Index of all Vec routines
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Index of all manual pages