Reducing simulation time in Sniper

[Hamid Reza]

Hello all,

I need to run applications on Sniper which run times are very long. So, Could you tell me how I can reduce simulation time?

Thanks

[Trevor Carlson]

Reza,

     That really depends on what you are trying to accomplish. You can reduce the size of the workload that you are trying to simulate. Below are two ways to do that.

     If you are running single-threaded workloads, then using the application's SimPoints will allow you to reduce the amount of work to get a representative application CPI. For multi-program workloads, you could use multiple long SimPoints.

     If you want to reduce the runtime of a multi-threaded workload, you could use time-based sampling as we detailed in our ISPASS 2013 paper.

I hope that helps to answer your question,

Trevor

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[Hamid Reza]

Dear Carlson,

Thanks for your useful answer. I read the ISPASS 2013 paper, and found concept of time-based sampling, but may I know how this option can be enabled in Sniper?

Thanks

[Trevor E. Carlson]

Hamid Reza,

    Take a look at the sniper/config/sampling.cfg file. All of the settings should be in there to get started. You'll need to configure the simulator for each application, as we mentioned in the ISPASS paper.

Tell us if you run into any trouble,
Trevor

[Dmitriy Kutra]

Dear Trevor, 

I've followed this suggestion but got error:

*ERROR* Sampling is only supported in Pin mode. 

I'm new in Sniper, so could you please explain how to make it works? 

BR

середа, 16 жовтня 2013 р. о 10:26:29 UTC+3 Trevor E. Carlson пише: