Hi Andreas,
The decoupling of directory controller and memory controller is the task of Ruby rather than DRAMSim2. As long as they can be decoupled, the DRAMSim2 can be easily attached as the classic memory does. Regards, -Tao From: [email protected] [mailto:[email protected]] On Behalf Of Andreas Hansson Sent: Monday, November 25, 2013 10:14 AM To: gem5 users mailing list Subject: Re: [gem5-users] DRAMSim2+GEM5 Error Hi Paul, My pleasure. I figured it was about time, although I firmly believe that the integrated DRAM controller model (SimpleDRAM) removes much of the need :-). When it comes to changes, have a look at the patch, and you will see a number of things that say something along the lines of "DRAMSim2 does not enable us to do X, hence we have to do Y". Most importantly: 1) put everything in a namespace to avoid clashes, 2) enable flow control on responses, 3) add some form of tagging to enable us to not assume FIFO for requests to the same address (or merge them somehow), 4) add getters for a param struct to figure out what DRAMSim2 has been initialised to look like, 5) add support for splitting system requests that are not BL x width sized, 6) allow a multi-channel system to be created with a crossbar/interleaving outside DRAMSim2 (in SimpleDRAM this is achieved by making it aware of the # channels, to "prune" those bits in the decoding). I am crossing my fingers and hoping that the availability of good DRAM controller models will make some Ruby developer take the plunge and split the directory controller and memory controller model in Ruby so that the "normal" gem5 controllers (DRAMSim2 included) can be used in those configurations as well. Let me know if you want to discuss any of these topics further. Andreas From: Paul Rosenfeld <[email protected]> Reply-To: gem5 users mailing list <[email protected]> Date: Monday, 25 November 2013 10:45 To: gem5 users mailing list <[email protected]> Subject: Re: [gem5-users] DRAMSim2+GEM5 Error Hi Andreas, Thanks for writing this patch. I'm in the process of making some changes to the DRAMSim2 interface that will eventually be going into the master branch and be breaking the current API. Since I'm already breaking the API, if you have any ideas for changes that would make it easier to integrate DRAMSim2 with GEM5, I'll do my best to try to implement them. Thanks, Paul On Mon, Nov 25, 2013 at 8:59 AM, Andreas Hansson <[email protected]> wrote: Hi, I suggest you have a look at http://reviews.gem5.org/r/2087/ In contrast to earlier attempts I've seen, this patch properly integrates DRAMSim2 as a type of memory in gem5. All you have to do is follow the instructions in the patch. Andreas From: Xing Niu <[email protected]> Reply-To: gem5 users mailing list <[email protected]> Date: Sunday, 24 November 2013 23:20 To: "[email protected]" <[email protected]> Subject: [gem5-users] DRAMSim2+GEM5 Error Hi, I want to use DRAMSim2+GEM5, and the patch of Xiangyu Dong is used. Dong only supplies the se_dramsim2.py, but I want to use the FS mode. I modified the fs.py, only adding one sentence below test_sys.physmem = DRAMMemory(range=AddrRange("512MB")) the following error occured. xniu@hec-53:~/gem5_parsec1/gem5$ ./build/ALPHA_FS/m5.opt configs/example/fs_dramsim2.py -t gem5 Simulator System. http://gem5.org gem5 is copyrighted software; use the --copyright option for details. gem5 compiled Nov 24 2013 17:37:01 gem5 started Nov 24 2013 23:20:56 gem5 executing on hec-53 command line: ./build/ALPHA_FS/m5.opt configs/example/fs_dramsim2.py -t Global frequency set at 1000000000000 ticks per second warn: This is an integrated DRAMsim v2 module CPU Clock = 2000MHz Memory Bus Clock = 666MHz Memory Capacity = 512MB info: kernel located at: /mnt/common/xniu/parsec/m5_system/binaries/vmlinux Listening for system connection on port 3456 0: system.tsunami.io.rtc: Real-time clock set to Thu Jan 1 00:00:00 2009 Error connecting port system.membus.port to <orphan PhysicalMemory>.port Traceback (most recent call last): File "<string>", line 1, in <module> File "/mnt/common/xniu/gem5_parsec1/gem5/src/python/m5/main.py", line 356, in main exec filecode in scope File "configs/example/fs_dramsim2.py", line 219, in <module> Simulation.run(options, root, test_sys, FutureClass) File "/mnt/common/xniu/gem5_parsec1/gem5/configs/common/Simulation.py", line 235, in run m5.instantiate(checkpoint_dir) File "/mnt/common/xniu/gem5_parsec1/gem5/src/python/m5/simulate.py", line 79, in instantiate for obj in root.descendants(): obj.connectPorts() File "/mnt/common/xniu/gem5_parsec1/gem5/src/python/m5/SimObject.py", line 972 , in connectPorts portRef.ccConnect() File "/mnt/common/xniu/gem5_parsec1/gem5/src/python/m5/params.py", line 1473, in ccConnect [el.ccConnect() for el in self.elements] File "/mnt/common/xniu/gem5_parsec1/gem5/src/python/m5/params.py", line 1395, in ccConnect peer.simobj.getCCObject(), peer.name, peer.index) File "/mnt/common/xniu/gem5_parsec1/gem5/src/python/m5/SimObject.py", line 943 , in getCCObject raise RuntimeError, "Attempt to instantiate orphan node" RuntimeError: Attempt to instantiate orphan node Thanks in advance, Xing -- 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. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782 _______________________________________________ gem5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users -- 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. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782
_______________________________________________ gem5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
