Hi Majid, The problem is that the IDD0 value is smaller than the active background current IDD3n as defined in the used datasheet. This leads to a negative value in the activation energy. I suppose this is a bug in the used DDR4 datasheet. I would propose that you set the latency and current parameters of DDR4 using another datasheet. Regards,Omar
> Date: Wed, 11 Mar 2015 15:37:25 +0000 > From: [email protected] > To: [email protected]; [email protected] > Subject: Re: [gem5-users] Negative value for system.mem_ctrls_1.actEnergy > > Hi Majid, > > First I would suggest to check the IDD values. Perhaps there is a typo > somewhere, or even an inconsistency in the actual data sheet. > > Second it would be good to know if you're doing any form of check pointing. > If so there could be something not getting reset properly. > > Andreas > > ----- > On Mar 11, 2015 at 12:44 PM, Majid Jalili <[email protected]> wrote: > > > Dears, > > I run most recent version of gem5 without any modification to source code > and with following command in SE mode: > > ./build/ALPHA/gem5.opt ./configs/example/cmp.py -b > lbm,lbm,lbm,lbm,lbm,lbm,lbm,lbm --mem-type=DDR4_2400_x64 --mem-size=16GB -n > 8 --caches --l2cache --cpu-type=detailed --l2_size=4MB --cacheline_size=64 > --l1i_size=64kB --l1d_size=64kB -I 1000000 > > then in the stat file I see weired result for activation energy: > system.mem_ctrls_1.actEnergy -1076645.169600 > # Energy for activate commands per rank (pJ) > > I am wondering if someone could help me with this problem. > > > Regards > Majid > > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
_______________________________________________ gem5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
