Hi Andreas, I tried the alpha first. I found I have set up this ISA and I rebuild it for this test. It can only support 4 timing simple alpha cores. And when I set the number of cpu to 5, the m5 terminal output indicates CPU #4 (which is the 5th cpu) is stuck. So can I say it can only support 4 cpu? What should I do if I want to support more (like 16) cpus in classical memory system with alpha timing core? Thanks!
On Aug 27, 2014, at 3:48 PM, Andreas Hansson <andreas.hans...@arm.com> wrote: > Hi Chao, > > Unfortunately the classic memory system does not support X86 atomic RMW > operations. This is why it works in atomic and not in timing. > > You options are: > 1) implement a fix and do everyone a big favour (I vote for this one) > 2) take the hit in simulation speed and switch to Ruby and stick to timing > mode > 3) use another ISA, e.g. ARM :-), that does not have this problem > > I hope that explains it. > > Andreas > > From: Chao Zhang via gem5-users <gem5-users@gem5.org> > Reply-To: Chao Zhang <zhang.c...@pku.edu.cn>, gem5 users mailing list > <gem5-users@gem5.org> > Date: Wednesday, 27 August 2014 07:47 > To: gem5 users mailing list <gem5-users@gem5.org> > Subject: [gem5-users] How many cpu does the x86 vmlinux SMP kernel support? > > Dear all, > > I’m currently working on x86 FS on classical memory system to simulate cache > system. But I found the kernel booting just hangs before loading benchmark > script. It does not work when I set 3 or more x86 timing simple cpus, but it > does work when I set them as atomic cores. And it also works when I set cpu > number to 1. The gem5 change set version is 10242, the kernel is the SMP > version from gem5 website (x86_64-vmlinux-2.6.28.4-smp), and I use default > fs.py configuration. > > So I want to know how many x86 timing cores does this SMP kernel support? Or > is this a memory system problem? > > Chao Zhang > Peking University > > > > > > > -- 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
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