On 12/08/17 17:35, William Johnson wrote:
> This may be a long shot, especially in a server room where everything
> else is working as expected.
Oh agreed! But given people have covered a lot of other bases I thought
I'd throw something in from my own experience. If all nodes boot the
same OS im
On 14/08/17 08:17, Lachlan Musicman wrote:
> Can you point to some good documentation on this?
There is some on Mellanox's website:
http://www.mellanox.com/related-docs/prod_software/Mellanox_EN_for_Linux_User_Manual_v2_0-3_0_0.pdf
But it it took weeks for $VENDOR to figure out what was
going o
On 12 August 2017 at 13:35, Chris Samuel wrote:
> Also remember that the kernel can enable C states that hurt performance
> even
> if they are disabled in the BIOS/UEFI. This was painfully apparent on our
> first SandyBridge cluster that almost failed the performance part of
> acceptance
> test
