On Mon, 2012-10-15 at 21:07 -0400, Peter Gavin wrote:
> On Mon, Oct 15, 2012 at 11:05 AM, Josep Pujol <[email protected]> wrote:
> > Hello,
> >
> > Is there any opensource tool that can be used to estimate the power
> > consumption of the openrisc processor for 90nm or 45nm?
> > Just an estimate will be fine.
>
> No. That's why I'll probably end up building one :/
It's not truly FLOSS (restriction on commercial use), but Wattch source
code is available for non-commercial/non-profit use.
http://www.eecs.harvard.edu/~dbrooks/wattch-form.html
Another case of someone writing their own "open source" license, rather
than using a tried and tested one!
This is probably the most widely used power estimation system for
mid/high-level analysis, certainly within the academic community. Its
proponents claim it is accurate to 10%.
Accurate power estimation by simulation is provided by commercial tools
operating at the gate level. It is critically tied into knowledge of the
target silicon process. These tools run extremely slowly (seconds per
cycle, rather than cycles per second for big chips), but apparently give
very good estimates.
If you are interested in this field, you may want to attend one of the
European EACO workshops held at Bristol University:
http://www.cs.bris.ac.uk/Research/Micro/eaco.jsp
Contact me off-list and I'll provide you with more detail.
Best wishes,
Jeremy
--
Tel: +44 (1590) 610184
Cell: +44 (7970) 676050
SkypeID: jeremybennett
Email: [email protected]
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