  We report an implementation of a code for SU(3) matrix multiplication on
Cell/B.E., which is a part of our project, Lattice Tool Kit on Cell/B.E.. On
QS20, the speed of the matrix multiplication on SPE in single precision is
227GFLOPS and it becomes 20GFLOPS {this vaule was remeasured and corrcted.}
together with data transfer from main memory by DNA transfer, which is 4.6% of
the hardware peak speed (460GFLOPS), and is 7.4% of the theoretical peak speed
of this calculation (268.77GFLOPS). We briefly describe our tuning procedure.
