There is an increasing complexity in applications. Even with the power management methods like DVFS in place, if an application causes the processor to perform poorly, that will have a negative effect on power utilization.
These are the projects currently underway at the ARM-ECS research centre
The technology scaling allows complex systems to be placed on a single die. To tackle this complexity it is increasingly desirable to source sub-systems, such as CPUs, from external Intellectual Property (IP) suppliers. The risk of unauthorized use has become critically important to IP vendors.
As computers are moving from the traditional large scale designs to smaller, more tightly integrated Systems-on-Chip (SoC), the complexity and the variety of applications are increasing. The IP blocks are connected using a Network-on-Chip (NoC), which employs measures to provide Quality-of-Service (QoS) guarantees for the traffic flowing though the network.
Leakage power is a major contributor to the IC power consumption in modern electronics design. In many applications processor spend significant amount of time in idle mode. Due to the exponential relationship between leakage power and supply voltage, Idle circuit power reduction can be achieved through voltage scaling. However the reduction in supply voltage can impact the system reliability.
- Power management policies exist, but these typically reduce performance or result in small power savings
- As some components in the system may be unused or clocked at higher frequencies than needed, some power savings can be achieved
In a large number of pervasive computing examples such as wireless sensor nodes, RFID or personal health care/monitoring, an electronic device is deployed in the field and can be expected to operate without maintenance forever.
This project aims to improve the energy efficiency of the next generation of high performance ARM processors (A15+).