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Or1200 Power Perfomance Evaluation
by zhongyang on Apr 18, 2012 |
zhongyang
Posts: 21 Joined: Dec 24, 2010 Last seen: May 9, 2012 |
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Hi all,
I want to know is there any specifications to download from the svn or web, about the power consumption of the Or1200, based on FPGA or ASIC? If there's not, have the power consumption been tested? Is there any methods or softwares which could be taken to evaluate the power consumption. |
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RE: Or1200 Power Perfomance Evaluation
by nmitas on Apr 18, 2012 |
nmitas
Posts: 1 Joined: May 11, 2009 Last seen: Sep 1, 2016 |
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As far as I can see there are no published numbers for the Or1200. It is not difficult to perform such measurements. On FPGA everything is within the environment that the vendor provides. E.g. for Xilinx (since Virtex5 is supported) you should :
1. produce a post P&R model 2. run a meaningfull (real world) simulation with that model 3. capture toggling from the simulator (in SAIF format) Then you import back the SAIF in Xpower Analyzer and you get your numbers. Otherwise you can just launch the Xpower Analyzer and it will apply default toggling rates to all LUTs (which is at all accurate) but also gets you "some" numbers. For ASIC you need to same method similar method (Post P&R netlist simulation) albeit different tools. |
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RE: Or1200 Power Perfomance Evaluation
by jeremybennett on Apr 19, 2012 |
jeremybennett
Posts: 815 Joined: May 29, 2008 Last seen: Jun 13, 2019 |
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Hi zhongyang You could look at the work of Steve Kerrison at Bristol University. He has done a lot of work on power estimation for processors, and I know he has been working on OpenRISC. You might also like to ask on the OpenRISC developer mailing lists openrisc@lists.opencores.org and openrisc@lists.openrisc.net (see http://opencores.org/or1k/OR1K:Community_portal#Mailing_lists for details). HTH Jeremy
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