Re: [gem5-users] DRAMCtrl parameters for DDR4_2400_8x8
Hi all, I've posted Wendy's fix: https://gem5-review.googlesource.com/c/public/gem5/+/8101 We're a maintainer-ack away from getting the fix merged. Thanks, Curtis -Original Message- From: gem5-users [mailto:gem5-users-boun...@gem5.org] On Behalf Of Wendy Elsasser Sent: Friday, February 09, 2018 11:39 AM To: gem5 users mailing list Subject: Re: [gem5-users] DRAMCtrl parameters for DDR4_2400_8x8 Hi everyone, DDR4 does have 16 banks, while DDR3 is a 8 bank devices, but the devices per rank are defined by the module (interface). I agree that for the 2400_8x8 configuration there should be 8 devices per rank defined. I am in the process of fixing this. Thanks for drawing this to my attention. Regards, Wendy On 2/9/18, 10:30 AM, "gem5-users on behalf of hassan yamin" wrote: DDR4 standard has 16 devices per rank. In DDR3 it is 8 devices per rank. On Fri, Feb 9, 2018 at 6:12 AM, 조해윤 wrote: > Dear, all. > > According to below link, > http://repo.gem5.org/gem5?cmd=changeset;node=17b37f38944a > DDR4_2400_8x8 uses a 8-bit width device and 8 devices are in a rank. > > My doubt is the below. > DDR4_2400_8x8 class is overriding DDR4_2400_16x4 class in DRAMCtrl.py > However, the devices_per_rank is still 16. > In my understanding, devices_per_rank should be 8. > Is there any missing point for my understanding? > > Best regards, > Haeyoon Cho > > ___ > 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 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 gem5-users@gem5.org 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. ___ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
Re: [gem5-users] DRAMCtrl parameters for DDR4_2400_8x8
Hi everyone, DDR4 does have 16 banks, while DDR3 is a 8 bank devices, but the devices per rank are defined by the module (interface). I agree that for the 2400_8x8 configuration there should be 8 devices per rank defined. I am in the process of fixing this. Thanks for drawing this to my attention. Regards, Wendy On 2/9/18, 10:30 AM, "gem5-users on behalf of hassan yamin" wrote: DDR4 standard has 16 devices per rank. In DDR3 it is 8 devices per rank. On Fri, Feb 9, 2018 at 6:12 AM, 조해윤 wrote: > Dear, all. > > According to below link, > http://repo.gem5.org/gem5?cmd=changeset;node=17b37f38944a > DDR4_2400_8x8 uses a 8-bit width device and 8 devices are in a rank. > > My doubt is the below. > DDR4_2400_8x8 class is overriding DDR4_2400_16x4 class in DRAMCtrl.py > However, the devices_per_rank is still 16. > In my understanding, devices_per_rank should be 8. > Is there any missing point for my understanding? > > Best regards, > Haeyoon Cho > > ___ > 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 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 gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
Re: [gem5-users] DRAMCtrl parameters for DDR4_2400_8x8
DDR4 standard has 16 devices per rank. In DDR3 it is 8 devices per rank. On Fri, Feb 9, 2018 at 6:12 AM, 조해윤 wrote: > Dear, all. > > According to below link, > http://repo.gem5.org/gem5?cmd=changeset;node=17b37f38944a > DDR4_2400_8x8 uses a 8-bit width device and 8 devices are in a rank. > > My doubt is the below. > DDR4_2400_8x8 class is overriding DDR4_2400_16x4 class in DRAMCtrl.py > However, the devices_per_rank is still 16. > In my understanding, devices_per_rank should be 8. > Is there any missing point for my understanding? > > Best regards, > Haeyoon Cho > > ___ > 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
