Next: 1.6 Implementation of Basic
Up: 1.5 Implementation of Basic
Previous: 1.5.1 Matrixvector multiplication
The basic operation to be performed is given by .

, x and y distributed like vectors:
For this case,
assume that x and y are identically distributed according to
the inducing vector distribution that induced the distribution of matrix A .
Notice that by spreading vectors x and y within columns
and rows of nodes, respectively, we duplicate
all necessary elements of x and y so that local rank1 updates can
commence on each node.

, other cases:
The case where x and y start as row or column of a matrix
can be derived similar to the special cases of matrixvector multiplication.
Next: 1.6 Implementation of Basic
Up: 1.5 Implementation of Basic
Previous: 1.5.1 Matrixvector multiplication
rvdg@cs.utexas.edu