Re: [Gems-users] "DYNAMIC_AF" or "STATIC_AF", question about opal power

["Serkan Ozdemir" <s-ozdemir@xxxxxxxxxxxxxxxx>]

Hi Guoqiang Yang,

I'm not sure if its relevant to your problem but do you still keep the
m_seq[j]->clearAccessStats();
line in system.C? It might be flushing the power stats gathered every cycle.

Also, how did you manage to use the updatePowerStats function? I have been 
trying to do something similar to what you are doing and if I set 
WATTCH_POWER to 1 in /opal/config/config.defaults; recompile opal and ruby 
and try to load/initialize those modules in simics I get a segfault error. 
If i set WATTCH_POWER to 0 without making any other changes everything seems 
to be working fine. Did you make any other changes in the setup?
Any comments/thoughts would be appreciated.

Thanks,

_Serkan Ozdemir_


----- Original Message ----- 
From: "Guoqiang Yang" <nkyangguoqiang@xxxxxxxxx>
To: <gems-users@xxxxxxxxxxx>
Sent: Wednesday, April 16, 2008 11:42 AM
Subject: [Gems-users] "DYNAMIC_AF" or "STATIC_AF", question about opal power


> Hi there,
>
> I'm back again~
>
> I am now trying to see the power consumed every N cycles. To do so, I
> call "update_power_status" every N cycles, and dump the variable
> "current_COMPONENT_NAME_power_cc3". After I got this information I found
> that the register file power and result bus power is zero!!!
>
> So I checked opal/power/power.C[.h], i found it had something to do with
> STATIC_AF and DYNAMIC_AF. Since "window_af_b" is increased by function
> "incrementWinNumPopCount" defined in power.h, but that function is never
> invoked, so i was using STATIC_AF instead of DYNAMIC_AF, and then I
> found that those variables "current_COMPONENT_NAME_power_cc3" seemed to
> be forgotten using "STATIC_AF".
>
> Any idea about this? Also, I found another function
> "output_periodic_power", it seems to me that "output_periodic_power"
> really dumps the total cc3 power of each component, but I don't know
> much about it. Am I doing the right thing to use "update_power_status"?
>
> Many thanks,
>
> Guoqiang Yang
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