Re: [Gems-users] How to Calculating IPC

[hana aliee <hanaal2003@xxxxxxxxx>]

Thanks Eugen,

Would you please tell me how to compute IPC with opal and ruby?

 

Thanks in advance

--- On Thu, 2/3/11, Leontie Eugen <e_leontie@xxxxxxxxx> wrote:

From: Leontie Eugen <e_leontie@xxxxxxxxx>
Subject: Re: [Gems-users] How to Calculating IPC
To: "Gems Users" <gems-users@xxxxxxxxxxx>
Date: Thursday, February 3, 2011, 10:40 AM

Simics (without any cache or microarchitectural addition - like Ruby or Opal ) will only provide functional simulations. 
In short , you can not compute any significant IPC with only Simics. The "cycles" reported by simics when you do run the command ptime are just the default IPC=1. 

You will only compute a meaningful IPC if you have both a microarchitecture simulator and a memory hierarchy simulator. 

Eugen

From: hana aliee <hanaal2003@xxxxxxxxx>
To: Gems Users <gems-users@xxxxxxxxxxx>
Cc:
Sent: Thursday, February 3, 2011 10:17 AM
Subject: [Gems-users] How to Calculating IPC

Dear all;

Can anyone tell me how I can calculate IPC of an application with simics without ruby and opal?
If it is essential to have ruby and opal, would you please tell me how I can reach IPC?

Thanks in advance for your help
Hana

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