Hi Mahmood, >From my point of view, tick is the time unit that can be treated as 1ps. For example, if one sets the clock frequency as "1GHz". The tick increases by every thousand. Of course, GEM5 may not execute one instruction in every clock cycle (CPI not equal to 1). So one instruction can stall and consumes thousands of ticks...
-Tao -----Original Message----- From: gem5-users-boun...@gem5.org [mailto:gem5-users-boun...@gem5.org] On Behalf Of Mahmood Naderan Sent: Monday, September 19, 2011 11:02 AM To: gem5 users mailing list Subject: Re: [gem5-users] is tick == cycle ? But from page 29, we can conclude 1 cycle = n picoseconds = n tick Is that true? On 9/19/11, Steve Reinhardt <ste...@gmail.com> wrote: > Page 118 of the tutorial is talking about the "tick()" method of the > CPU, which is called every CPU cycle. As described on page 29 of the > tutorial, and in the email you reference, the "tick" unit that > measures global time is not related to the clock cycle. These are not > directly related, i.e., the > tick() method is not called on every tick. In retrospect I suppose > the naming is suboptimal. > > Steve > > On Mon, Sep 19, 2011 at 5:01 AM, Mahmood Naderan > <mahmood...@gmail.com>wrote: > >> Hi, >> From page 118 of the tutorial, it seems that tick() is equal to cycle. >> In another word, every tick(0) is considered as a cycle 0. However >> from what is stated at >> http://www.mail-archive.com/gem5-users@m5sim.org/msg05247.html, they >> differ in concept. Any exaplain about that is appreciated. >> >> -- >> // Naderan *Mahmood; >> _______________________________________________ >> gem5-users mailing list >> gem5-users@gem5.org >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >> > -- -- // Naderan *Mahmood; _______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users _______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
