linux-kernel - AMD Bulldozer FX-8150 Powers off during kernel build

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Date:	Thu, 13 Sep 2012 02:30:27 +0100
From:	Sid Boyce <sboyce@...eyonder.co.uk>
To:	LKML Mailing List <linux-kernel@...r.kernel.org>
Subject: AMD Bulldozer FX-8150 Powers off during kernel build

I have a huge heatsink and large CPU fan plus lots of cooling fans in 
the case and nothing gets hot.
If I build e.g 3.6-rc5 with 8 or 6 cores, part way through it suddenly 
powers off.

I have checked hwmon/k10temp.c to see if I could see where these values 
were defined.

k10temp.h is 0 bytes.
-rw-r--r-- 1 root root 0 Sep  9 01:59 
/usr/src/linux-3.6.0-rc5/include/config/sensors/k10temp.h

Currently I build with "make -j 1" and temperature and power values are 
around those below.
# sensors
k10temp-pci-00c3
Adapter: PCI adapter
temp1:        +60.4°C  (high = +70.0°C)
                        (crit = +90.0°C, hyst = +87.0°C)

fam15h_power-pci-00c4
Adapter: PCI adapter
power1:      127.49 W  (crit = 124.77 W)

# cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 21
model           : 1
model name      : AMD FX(tm)-8150 Eight-Core Processor
stepping        : 2
microcode       : 0x6000626
cpu MHz         : 3600.000
cache size      : 2048 KB

from .config:-
# grep HWMON .config
CONFIG_IXGBE_HWMON=y
CONFIG_HWMON=y
CONFIG_HWMON_VID=m
# CONFIG_HWMON_DEBUG_CHIP is not set
CONFIG_THERMAL_HWMON=y

# grep POWERSAVE .config
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
# CONFIG_PCIEASPM_POWERSAVE is not set
CONFIG_DEVFREQ_GOV_POWERSAVE=y

On another 6-core box I can build kernels with "make -j 6" without problems.
# cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 21
model           : 1
model name      : AMD FX(tm)-6100 Six-Core Processor
stepping        : 2
microcode       : 0x6000623
cpu MHz         : 3300.000
cache size      : 2048 KB

With a kernel build going on six core box, temperature and power hover 
around the values below.
sabre:~ # sensors
k10temp-pci-00c3
Adapter: PCI adapter
temp1:        +50.2°C  (high = +70.0°C)
                        (crit = +90.0°C, hyst = +87.0°C)

fam15h_power-pci-00c4
Adapter: PCI adapter
power1:       94.40 W  (crit =  95.01 W)

73 ... Sid.

-- 
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks

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