[DragonFlyBSD - Bug #2703] (Closed) Boot failure on a 80-core, 4TB RAM machine

bugtracker-admin at leaf.dragonflybsd.org bugtracker-admin at leaf.dragonflybsd.org
Sat Feb 7 03:36:32 PST 2015

Issue #2703 has been updated by tuxillo.

Category set to Kernel
Status changed from New to Closed
Target version set to 4.2.x

Bug #2703: Boot failure on a 80-core, 4TB RAM machine

* Author: ftigeot
* Status: Closed
* Priority: Normal
* Assignee: 
* Category: Kernel
* Target version: 4.2.x
DragonFly 3.9 fails to boot on an Hitachi Compute Blade 2000 machine

Hardware specs:
- 8x Xeon E7-8870 CPUs (Westmere cores)
- 80 Cores, 160 threads

- With 4TB RAM, the machine reboots by itself once the kernel has printed some copyright information

- With hw.physmem set to 64GB, the kernel is a little bit more happy but still fails to boot completely:

[start of dmesg]
avail memory = 62892793856 (59979 MB)
madt_lapic_probe: no CPU is found
MPTABLE: lapic id  64, disable HTT fixup
lapic: divisor index 0, frequency 0 Hz
panic: assertion "lapic_cputimer_intr.freq != 0 && lapic_timer_divisor_idx >= 0" failed in set_apic_timer at /usr/src/sys/platform/pc64/apic/lapic.c:690
cpuid = 0
Trace beginning at fram 0xffffffff81c7dc40

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