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Subject: Re: [hwloc-users] Hwloc error.
From: Brice Goglin (Brice.Goglin_at_[hidden])
Date: 2012-05-30 15:26:38

We don't need any other info on the hwloc side. And we thank you for
testing the big hwloc warning code :)

For HP:
* If you're lucky, the BIOS may talk about the number of NUMA nodes
(either on the usual messages during boot, or in the BIOS configuration
menu). See if it says 2 on the broken node instead of 4 on other nodes,
you have something easy to tell HP.
* Otherwise we'll have to dig in the SRAT ACPI info. "dmesg | grep SRAT"
should talk about some "PXM" properties, which are basically NUMA
localities. You should see PXM 1 and 2 on the broken node, and PXM 0, 1,
2 and 3 on the other ones. SRAT comes from ACPI, if SRAT is broken, the
hardware/firmware is buggy.


Le 30/05/2012 21:06, John Hanks a écrit :
> I updated the BIOS and still got the error on this host, then I did
> what I should have done in the first place and checked another
> physically identical host. Of the 4 nodes I have that are the same,
> only this one exhibits the error. At this point I'm blaming a hardware
> problem, if there's any benefit to hwloc for me to send additional
> debugging information I am happy to, otherwise I'm going try to figure
> out how what to say to HP to get this node fixed.
> Thanks,
> jbh
> On Wed, May 30, 2012 at 9:27 AM, John Hanks <john.hanks_at_[hidden]> wrote:
>> I recently inherited these machines and would bet small amounts of
>> hard currency they have never seen a BIOS update since birth. I'll
>> figure out how to update the BIOS and let you know if the error
>> persists.
>> Thanks,
>> jbh
>> On Wed, May 30, 2012 at 9:24 AM, Jeff Squyres <jsquyres_at_[hidden]> wrote:
>>> On May 30, 2012, at 11:22 AM, Samuel Thibault wrote:
>>>> i.e. the kernel reports that socket 0 is completely in node 1, while
>>>> socket 1 is half in node 1 and half in node 2. Do you have more
>>>> information about what the machine actually contains socket- and
>>>> NUMA-wise? The dell website is not really felpful, it talks about 4-16
>>>> cores for the DL165 G7, while you have 24.
>>> How old is your Dell BIOS firmware? You might need to update it.
>>> --
>>> Jeff Squyres
>>> jsquyres_at_[hidden]
>>> For corporate legal information go to:
>>> _______________________________________________
>>> hwloc-users mailing list
>>> hwloc-users_at_[hidden]
> _______________________________________________
> hwloc-users mailing list
> hwloc-users_at_[hidden]