If you want a cycle accurate DDR interface, then DRAMSim2 is probably the way to go. Please remember though that there is nothing "cycle accurate" about the controller model in DRAMSim2, so the question is what it really gives you. I would argue that there is a distinction to be made between accuracy and precision, but perhaps that's just me :-)
The SimpleDRAM model in gem5 is far more general (and much faster) as it attempts to be a truthful representation of the controller, but only models the DRAM by means of timings. If you really care about the cycle-level DRAM behaviour, I would even suggest getting traces out of gem5 (the CommMonitor can do this for you) and then replay them on an RTL implementation of a real DRAM controller. Andreas From: Mansour Shafaei Moghaddam <[email protected]<mailto:[email protected]>> Reply-To: gem5 users mailing list <[email protected]<mailto:[email protected]>> Date: Monday, 7 January 2013 22:23 To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [gem5-users] DRAMSim2 Patch--deleted link @Ben: forgot to answer your question!! I want to study the cycle accurate behavior of memory. As far as I know, there is no support for such a thing inside the gem5 itself. On Mon, Jan 7, 2013 at 5:20 PM, Mansour Shafaei Moghaddam <[email protected]<mailto:[email protected]>> wrote: @Ben: Thank for the links, Ben. Actually I had seen those but I had not tried them. They look rather old, so, I thought that Tao's patch must be better. @Tao: Thanks for your quick response. Is the issue technical? -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. _______________________________________________ gem5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
