Description: Agenda- The New World, A Little Physics: Why the New World Requires New Optimizations, Optimizing the Intel® HD Graphics Architecture for the New World. Strong Desire for More Performance: More compelling experiences, More computation in a smaller package!, High-DPI “retinal” displays – 2-4x more pixels, Range of visual experiences: 2D, 3D, media, Combined together - All-day computing at higher performance. What Determines Power- Power has two main components – “Dynamic Power” and “Leakage”.
Dynamic Power- Goes up with switching transistor count, Goes up with frequency, Goes up even faster with voltage (V2), Leakage- Goes up with powered transistor count, Doesn’t matter what the frequency is Goes up very fast with voltage (V3 or so), But frequency and voltage are themselves related. Voltage, Frequency and Power- The voltage vs. frequency curve tends to have an inflection point- Fmax@Vmin: the fastest the part can operate at Vmin, In the voltage-scaling region, power increases much faster than frequency: Voltage is scaling roughly linearly with frequency, Dynamic power goes up as V2f, Leakage goes up roughly as V3.
Voltage, Frequency, Power and Size- Consider two parts: One 2x the size of the other, Designed to the same rules, so same Fmax@Vmin. With lots of available power, both parts are running faster than Fmax@Vmin, and the big part performs much better than the small part, With less available power, the small part is above Fmax@Vmin, but the big part is not; the performan ...Please navigate Paper pages for more details.