•Use multiple
Functional Units per processor
–Cray T90 has 2 track vector units; NEC SX4, Fujitsu VPP300 -- 8 track vector units
–superscalar
e.g. IBM RS6000 Power2 uses 2 arithmetic units
•Need to provide data to
multiple functional unit =>
fast memory access
•Limiting
factors are memory-processor
bandwidth
•