Hai everyone, I have been successful in simulating hybrid memory. The code used for the simulation is attached to this email. But when I check the stats file I can see all NVM parameters are given 0 values, no matter whatever size of DRAM I use[ to check NVM memory is getting utilized]. Where am I going wrong, any suggestions are acceptable. [image: image.png] If I decrease the size of DRAM memory below 1MB then I get the following, error. What I expected is, that if DRAM is full, automatically then it should take NVM memory. [image: image.png] On Fri, Sep 22, 2023 at 9:42 AM Sadhana . <sadhana.197cs002@nitk.edu.in> wrote: > Thank you Ayaz. I have fixed this issue. > > > > On Fri, Sep 22, 2023 at 3:09 AM Ayaz Akram <yazakram@ucdavis.edu> wrote: > >> Hi Sadhana, >> >> In the screenshot you shared, the address ranges assigned to two memory >> devices are overlapping (0:1073741824 and 0:2147483648). You should modify >> the second range such that it does not start from 0 but starts from >> 1073741824 or some other address (such that the two ranges do not overlap). >> >> -Ayaz >> >> On Wed, Sep 20, 2023 at 10:16 PM Sadhana . via gem5-users < >> gem5-users@gem5.org> wrote: >> >>> I am using gem5 version 22.0. I want to simulate hybrid memory >>> comprising DRAM and NVM. I have written the code to simulate hybrid memory >>> using heterogeneous memory controller as: >>> system.mem_ctrl=HeteroMemCtrl() >>> system.mem_ctrl.dram = DDR3_1600_8x8() >>> system.mem_ctrl.dram.range = system.mem_ranges[0] >>> system.mem_ctrl.nvm=NVM_2400_1x64() >>> system.mem_ctrl.nvm.range =system.mem_ranges[1] >>> print(system.mem_ranges[0]) >>> print(system.mem_ranges[1]) >>> But I am getting the error as the memory address range for nvm memory >>> is overlapping, how can I assign continuous addressing to both memories? >>> >>> >>> [image: image.png] >>> Thanks and Regards, >>> Sadhana, >>> Research Scholar-NITK, >>> Dept. of Computer Science and Engineering >>> . >>> _______________________________________________ >>> gem5-users mailing list -- gem5-users@gem5.org >>> To unsubscribe send an email to gem5-users-leave@gem5.org >>> >>

Hai everyone, I have been successful in simulating hybrid memory. The code used for the simulation is attached to this email. But when I check the stats file I can see all NVM parameters are given 0 values, no matter whatever size of DRAM I use[ to check NVM memory is getting utilized]. Where am I going wrong, any suggestions are acceptable. [image: image.png] If I decrease the size of DRAM memory below 1MB then I get the following, error. What I expected is, that if DRAM is full, automatically then it should take NVM memory. [image: image.png] On Fri, Sep 22, 2023 at 9:42 AM Sadhana . <sadhana.197cs002@nitk.edu.in> wrote: > Thank you Ayaz. I have fixed this issue. > > > > On Fri, Sep 22, 2023 at 3:09 AM Ayaz Akram <yazakram@ucdavis.edu> wrote: > >> Hi Sadhana, >> >> In the screenshot you shared, the address ranges assigned to two memory >> devices are overlapping (0:1073741824 and 0:2147483648). You should modify >> the second range such that it does not start from 0 but starts from >> 1073741824 or some other address (such that the two ranges do not overlap). >> >> -Ayaz >> >> On Wed, Sep 20, 2023 at 10:16 PM Sadhana . via gem5-users < >> gem5-users@gem5.org> wrote: >> >>> I am using gem5 version 22.0. I want to simulate hybrid memory >>> comprising DRAM and NVM. I have written the code to simulate hybrid memory >>> using heterogeneous memory controller as: >>> system.mem_ctrl=HeteroMemCtrl() >>> system.mem_ctrl.dram = DDR3_1600_8x8() >>> system.mem_ctrl.dram.range = system.mem_ranges[0] >>> system.mem_ctrl.nvm=NVM_2400_1x64() >>> system.mem_ctrl.nvm.range =system.mem_ranges[1] >>> print(system.mem_ranges[0]) >>> print(system.mem_ranges[1]) >>> But I am getting the error as the memory address range for nvm memory >>> is overlapping, how can I assign continuous addressing to both memories? >>> >>> >>> [image: image.png] >>> Thanks and Regards, >>> Sadhana, >>> Research Scholar-NITK, >>> Dept. of Computer Science and Engineering >>> . >>> _______________________________________________ >>> gem5-users mailing list -- gem5-users@gem5.org >>> To unsubscribe send an email to gem5-users-leave@gem5.org >>> >>

Hi Sadhana, I expected that with a very small DRAM size, you would see some traffic to NVM memory. But, I think the reason you are running into "out of memory" error when the DRAM size is very small is probably that in SE mode the physical memory allocation has to be done from a specific memory pool (by default the first pool). And each physical memory is in a separate pool. MemPools were added in this change: https://gem5-review.googlesource.com/c/public/gem5/+/42215. I think you will not run into the problem you are running into if you use an older gem5 version e.g., 21.0.0.0. -Ayaz On Thu, Sep 21, 2023 at 9:51 PM Sadhana . <sadhana.197cs002@nitk.edu.in> wrote: > Hai everyone, > I have been successful in simulating hybrid memory. The code used for the > simulation is attached to this email. But when I check the stats file I can > see all NVM parameters are given 0 values, no matter whatever size of DRAM > I use[ to check NVM memory is getting utilized]. Where am I going wrong, > any suggestions are acceptable. > > [image: image.png] > If I decrease the size of DRAM memory below 1MB then I get the following, > error. What I expected is, that if DRAM is full, automatically then it > should take NVM memory. > [image: image.png] > > > > > > On Fri, Sep 22, 2023 at 9:42 AM Sadhana . <sadhana.197cs002@nitk.edu.in> > wrote: > >> Thank you Ayaz. I have fixed this issue. >> >> >> >> On Fri, Sep 22, 2023 at 3:09 AM Ayaz Akram <yazakram@ucdavis.edu> wrote: >> >>> Hi Sadhana, >>> >>> In the screenshot you shared, the address ranges assigned to two memory >>> devices are overlapping (0:1073741824 and 0:2147483648). You should modify >>> the second range such that it does not start from 0 but starts from >>> 1073741824 or some other address (such that the two ranges do not overlap). >>> >>> -Ayaz >>> >>> On Wed, Sep 20, 2023 at 10:16 PM Sadhana . via gem5-users < >>> gem5-users@gem5.org> wrote: >>> >>>> I am using gem5 version 22.0. I want to simulate hybrid memory >>>> comprising DRAM and NVM. I have written the code to simulate hybrid memory >>>> using heterogeneous memory controller as: >>>> system.mem_ctrl=HeteroMemCtrl() >>>> system.mem_ctrl.dram = DDR3_1600_8x8() >>>> system.mem_ctrl.dram.range = system.mem_ranges[0] >>>> system.mem_ctrl.nvm=NVM_2400_1x64() >>>> system.mem_ctrl.nvm.range =system.mem_ranges[1] >>>> print(system.mem_ranges[0]) >>>> print(system.mem_ranges[1]) >>>> But I am getting the error as the memory address range for nvm memory >>>> is overlapping, how can I assign continuous addressing to both memories? >>>> >>>> >>>> [image: image.png] >>>> Thanks and Regards, >>>> Sadhana, >>>> Research Scholar-NITK, >>>> Dept. of Computer Science and Engineering >>>> . >>>> _______________________________________________ >>>> gem5-users mailing list -- gem5-users@gem5.org >>>> To unsubscribe send an email to gem5-users-leave@gem5.org >>>> >>>

Sorry, can you post your code again, the file is no longer valid, thanks a lot!