Messages in this thread |  | | Date | Tue, 8 Apr 2008 15:32:58 -0700 | From | "Yinghai Lu" <> | Subject | Re: [PATCH 0/2] NR_CPUS: increase maximum NR_CPUS to 4096 |
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On Tue, Apr 8, 2008 at 3:03 PM, Mike Travis <travis@sgi.com> wrote: > Yinghai Lu wrote: > > On Fri, Apr 4, 2008 at 6:30 PM, Mike Travis <travis@sgi.com> wrote: > >> * Increases the limit of NR_CPUS to 4096 and introduces a > >> boolean called "MAXSMP" which when set (e.g. "allyesconfig") > >> will set NR_CPUS = 4096 and NODES_SHIFT = 9 (512). > >> > >> I've been running this config (4k NR_CPUS, 512 Max Nodes) > >> on an AMD box with 2 dual-cores and 4gb memory as well as an > >> Intel box with 4 single-core cpus and 8Mb. I've also > >> successfully booted it in a simulated 2cpus/1Gb environment. > >> > >> Based on: > >> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git > >> + x86/latest .../x86/linux-2.6-x86.git > >> + sched-devel/latest .../mingo/linux-2.6-sched-devel.git > >> > >> Signed-off-by: Mike Travis <travis@sgi.com> > > > > got > > Hi Yinghai, > > Thanks for the feedback! Would you send me your config file and > other details (like cpu type/mem size/etc.) and I'll attempt > to reproduce the failure. > > (My problem is that only the AMD box is a real "workstation", the > Intel box is a dual quad-cpu server so it's really deficient in I/O.) >
AMD quadcore eight sockets and 256G RAM
if I set NR_CPUS to 128 instead of 4096 it will be ok.
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