Arm Community
Site
Search
User
Site
Search
User
Groups
Arm Research
DesignStart
Education Hub
Graphics and Gaming
High Performance Computing
Innovation
Multimedia
Open Source Software and Platforms
Physical
Processors
Security
System
Software Tools
TrustZone for Armv8-M
中文社区
Blog
Announcements
Artificial Intelligence
Automotive
Healthcare
HPC
Infrastructure
Innovation
Internet of Things
Machine Learning
Mobile
Smart Homes
Wearables
Forums
All developer forums
IP Product forums
Tool & Software forums
Support
Open a support case
Documentation
Downloads
Training
Arm Approved program
Arm Design Reviews
Community Help
More
Cancel
Developer Community
Tools and Software
Software Tools
Jump...
Cancel
Software Tools
Arm Development Studio forum
Energy Profiling of an ARM7 core
Tools, Software and IDEs blog
Forums
Videos & Files
Help
Jump...
Cancel
New
Replies
5 replies
Subscribers
126 subscribers
Views
2484 views
Users
0 members are here
Related
Energy Profiling of an ARM7 core
Offline
Ram Prasadh
over 7 years ago
Note: This was originally posted on 8th July 2013 at http://forums.arm.com
Hi
I want to make energy profiling and analysis of a ARM7 core. I have some doubts regarding this. May be my doubts are silly.
#1 :: I don't have a development board with myself and so, I intend to make a virtual simulation of the core. I have a DS-5 community edition installed in my windows 7 system.
Please tell me whether I would be able to do a virtual Simulation with an external hardware connected?. I came to know that about the ARMulator. Can it be invoked in the DS-5 for a virtual simulation of a ARM7.? If it can be,what should I do to use the ARMulator.? Firstly , can the DS-5 be used for the above mentioned purpose?
#2 :: How can I test the core by using Benchmark codes like Dhrystone marking in DS-5?
Regards,
RamPrasadh N.
Offline
Scott Douglass
over 7 years ago
Note: This was originally posted on 10th July 2013 at
http://forums.arm.com
I don't really understand what you mean by "virtual Simulation with an external hardware connected", so I may be missing the point.
#1: The full version of DS-5 comes with an FVP (Fixed Virtual Platform) model of a quad core Cortex-A9. You can use it to run code built for ARM7 (although I'm not sure if the old BE8 is supported by Cortex-A9). But the model does not do cycle counts nor power. The model is not included in the Community Edition, you'll need to get the eval of the full version. There is a separate Fast Models product that can produce custom models (different processors, different peripherals) that DS-5 can connect to. DS-5 does not support ARMulator.
If you have a real hardware running Linux or Android and you have (or can make) an appropriate power test point, you can use Streamline and the ARM Energy Probe (or a National Instruments DAQ) to make power measurements.
#2: The full version of DS-5 includes a number of examples which you could use to as a basis for building a benchmark.
Note that Community Edition does not include bare-metal (no OS) use; it only supports targets running Linux or Android. The full version can do bare-metal, too.
Cancel
Up
0
Down
View discussion
Cancel
Offline
Ram Prasadh
over 7 years ago
Note: This was originally posted on 10th July 2013 at
http://forums.arm.com
I am sorry. It is "without an external hardware".
I will actually be needing a model which can do a cycle count and energy profiling for the ARM7 core. I came to know that, an RVISS emulation can be run on a RVDS4.1 professional suite for ARM7 core. But the problem is RVDS does not have evaluation version. I think if I can have a RVDS4.1 suite , them I may be able to do an energy profiling for an ARM7 core.
Please Correct me if I am wrong.
Cancel
Up
0
Down
View discussion
Cancel
Offline
Scott Douglass
over 7 years ago
Note: This was originally posted on 11th July 2013 at
http://forums.arm.com
For a simple enough system (ARM7TDMI, synchronous clocking, no cache, no MMU, no interrupts, perfect memory) you might be able to get cycle accurate simulation (without profiling) from RVDS 4.1; but RVDS 4.1 doesn't have any energy profiling features.
Cancel
Up
0
Down
View discussion
Cancel
Offline
Ram Prasadh
over 7 years ago
Note: This was originally posted on 11th July 2013 at
http://forums.arm.com
So , Can I take from your words that, If I simulate a code for ARM7 in RVDS,I can get the Number of cycles of instructions for the executed code?
Is there any other possible way to do an energy profiling for ARM7?
I do have an other query here.
How can I calculate the current consumption of an ARM core by simulation.? If I have a processor running on ARM core, I may be able to dis-able all the peripherals, in software and measure the supply current through a meter. It may be approximated to the core current consumption.Correct me If I am wrong. But, will I be able to do it through simulation?
Cancel
Up
0
Down
View discussion
Cancel
Offline
Peter Harris
over 7 years ago
Note: This was originally posted on 11th July 2013 at
http://forums.arm.com
[color=#222222][font=Arial, Helvetica, sans-serif][size=2]> Is there any other possible way to do an energy profiling for ARM7? [/size][/font][/color]
Well, the ISSM won't tell you anything useful about what real implementations do. Not all instructions consume the same power. Arithmetic vs instructions which touch memory for example are totally different. Netlist-level power simulation tools exist, but they are very slow and need good input test vectors. Failing that get a real SoC and a power meter like a Streamline power probe, or National Instruments DAQ, and measure power on a real device ...
[color=#222222][font=Arial, Helvetica, sans-serif][size=2]> But, will I be able to do it through simulation? [/size][/font][/color]
[color=#222222][font=Arial, Helvetica, sans-serif][size=2]
[/size][/font][/color]
Define "simulation". Transistor toggling in full logic level RTL simulation has some correlation with analogue power sim, but it is not easy, and not always accurate. Analogue level power simulation is useful, but very slow. It's not an easy job with a trivial "just use this tool" answer I'm afraid, it [size=2]really[/size] depends what you are trying to do.
Cancel
Up
0
Down
View discussion
Cancel
More questions in this forum
By title
By date
By reply count
By view count
By most asked
By votes
By quality
Descending
Ascending
All recent questions
Unread questions
Questions you've participated in
Questions you've asked
Unanswered questions
Answered questions
Questions with suggested answers
Questions with no replies
Not Answered
Forum FAQs
0
ARM Community
4141
views
0
replies
Started
2 months ago
by
Annie Cracknell
Not Answered
Directive error while adding include file for TI launchpad board
0
39
views
0
replies
Started
12 hours ago
by
asim ansari
Answered
Can't get a 30-day Gold Edition evalution license
+1
370
views
7
replies
Latest
14 hours ago
by
KokoBongo
Answered
Failure to get an evaluation license with error Unable to execute API call /api/v1/connect
0
6851
views
5
replies
Latest
6 days ago
by
Ronan Synnott
Answered
error encountered when try to connect FVP
0
3883
views
18
replies
Latest
10 days ago
by
MattB
>
View all questions in Arm Development Studio forum