SHORT VPU filling for double precisiof data

EVENTSET
PMC0  VPU_INSTRUCTIONS_EXECUTED
PMC1  VPU_ELEMENTS_ACTIVE

METRICS
Runtime (RDTSC) [s] time
VPU fill ratio PMC0*8/PMC1

LONG
Formulas:
VPU fill ratio = VPU_INSTRUCTIONS_EXECUTED*8/VPU_ELEMENTS_ACTIVE
--
This performance group measures the number of vector instructions that are
performed on each vector loaded to the VPU. It is important to increate the
ratio to get a high throughput because memory accesses (loading data to the VPU)
are expensive.
