Power Modelling using SystemC

Non examinable.

TLM POWER2 library release:

• Deals with power `modes' and `phases' of subsystems
• Might be difficult to integrate with loosely-timed modelling ?
• Difficult to record energy consuming events, such as individual bus transactions,
• Power consumption for a component read from a table that must always be manually created.

Cambridge TLM POWER 3 library for SystemC:

• Supports power and energy equally well, with power calculations being accurate at the end of each LT quantum.
• Requires each component to inherit the prazor base class (current implementation),
• Enables physical size of components to be logged (e.g. as a basis for nominal place and route),
• Allocates X-Y co-ordinates to each component,
• Wiring distances can be estimated using Rent's rule OR measured from X-Y coordinates if placed,
• Power/energy consumption for a component can depend on constructor args (e.g. memory size, bus width).
• Counts bit flips in generic payload and multiplies by length of the bus.
• No API for dynamic voltage scaling, but dynamic-frequency is kind-of intrinsic to the energy-logging approach.