On 02/24/2011 09:49 AM, Sandra Escandor wrote:
Hello,
I'm currently researching how to use OpenIPMI to obtain sensor
readings, specifically for an Intel Xeon 5500 CPU. I am wondering: Is
it possible to obtain this reading through OpenIPMI, or should I use
something else?
One of the reasons why I ask this is, from what I've found out, the
temperature of the CPU can be read from an MSR -- does the BMC get
access to this, so that I can eventually use OpenIPMI to obtain this
reading? Also, when I use ipmitool, the CPU temperature reading that I
get is " 0 unspecified" -- this tells me that the SDR doesn't have a
temperature reading (unless I need some extra driver specific for
this?). Please correct me if I'm wrong -- I've only started looking
over the IPMI concepts.
Thanks for your help,
Sandra
I'm not quite sure what the hardware is capable of doing. The BMC can't
get the data directly from an MSR, of course, and I'm not sure if
there's another way for the BMC to fetch this information. I have some
systems that do and some that don't. It depends on your board.
OpenIPMI is just a conveyor of information. The board manufacturer has
to put the information in for it to transfer the information. I don't
think you need an extra driver to get any information to the BMC, but
you might need for the system to be on for it to work. I have a system
with processor temperature, but you have to turn the system on to get a
reading.
-corey
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