From: ppokorny@penguincomputing.com (Philip Pokorny)
To: lm-sensors@vger.kernel.org
Subject: [lm-sensors] AMD K8 digital temperature sensor
Date: Thu, 06 Jul 2006 00:55:33 +0000 [thread overview]
Message-ID: <44AC5F85.50705@jellyfish.highlyscyld.com> (raw)
In-Reply-To: <44A9941C.4020106@sh.cvut.cz>
Very cool.
My initial tests on Red Hat failed because they don't have HWMON in the
kernel yet. So I tried a beta of SLES 10 and it compiled and loaded just
fine. I found the temperature files under:
> /sys/class/hwmon/hwmon?/device/temp?_input
This system has single core CPU's but there were two hwmon devices
(hwmon0, hwmon1) each with a temp1_input. (Perhaps that's because I
didn't apply the kernel patch?)
This system also has IPMI (rather than lm_sensors.. :( ) so I plotted
the new readings against the IPMI readings. For one CPU the digital
sensor is higher, for the other it's lower...
http://www.mindspring.com/~ppokorny/temps-k8.png
Do the data sheets mention if these values are on the "Tcontrol" scale
or are they supposed to be accurate measurements? Do they need to be
adjusted by the CPU Tcontrol offsets?
Awesome,
:v)
--
Philip Pokorny, Director of Engineering, RHCE
Tel: 415-370-0835 Fax: 415-954-2899 Toll Free: 888-PENGUIN
PENGUIN COMPUTING, INC.
www.penguincomputing.com
Rudolf Marek wrote:
>Hello all,
>
>After new specs was released. I discovered that even older AMD K8 have digital
>temperature sensor.
>
>http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/32559.pdf
>(page 177)
>
>I created a device driver for that
>http://assembler.cz/download/amd_digital_temp.tar.gz
>
>You need to have AMD K8, up to four different temps can be monitored
>two in one core...
>
>The driver will create new hwmon device. No userspace support yet.
>If someone with dual core would test it - I'm interested in results.
>cat /sys/class/hwmon/hwmon1/device/temp*
>ls /sys/class/hwmon/hwmon1/device/temp*
>cat /proc/cpuinfo
>
>(replace 1 with correct number please)
>
>"Many thanks" goes to Jean, helping me a lot hunting nasty bugs ;)
>
>Regards
>Rudolf
>
>_______________________________________________
>lm-sensors mailing list
>lm-sensors at lm-sensors.org
>http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
>
>
next prev parent reply other threads:[~2006-07-06 0:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-03 22:03 [lm-sensors] AMD K8 digital temperature sensor Rudolf Marek
2006-07-06 0:55 ` Philip Pokorny [this message]
2006-07-06 13:32 ` Rudolf Marek
2006-07-06 14:08 ` Rudolf Marek
2006-07-07 15:59 ` David Hubbard
2006-07-12 0:26 ` David Hubbard
2006-07-12 6:08 ` Rudolf Marek
2006-07-12 13:43 ` David Hubbard
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