[Beowulf] Nvidia K20 + Supermicro mobo

[Michael Di Domenico]

On Fri, Jul 19, 2013 at 1:44 PM, Prentice Bisbal
<prentice.bisbal at rutgers.edu> wrote:
>
> On 07/17/2013 05:32 PM, Mikhail Kuzminsky wrote:
>>   Adam DeConinck <ajdecon at ajdecon.org> wrote :
>>
>>> I've seen similar messages on CentOS when the Nouveau drivers are
>>> loaded and a Tesla K20 is installed. You should make sure that nouveau
>>> is blacklisted so the kernel won't load it.
>>>
>>> Note that it hasn't always been enough for me to have nouveau listed
>>> in /etc/modprobe.d/blacklist; sometimes I've had to actually put
>>> "rdblacklist=nouveau" on the kernel line.
>> nouveau driver loading is suppressed via /etc/modprobe.d .
>> lsmod don't show the presence of nouveau module; therefore I hope that rdblacklist as kernel parameter is not necessary
> It's been a year or two since I dealt with this issue, but I'm pretty
> sure that suppressing the nouveau driver in /etc/modprobe.d is NOT
> adequate and you will need to add it to your kernel args.

sometimes that's not even enough.  i usually dracut it from the initrd
to keep it from loading at boot.  this happens to us on machines where
we have an nvidia card from the display graphics and an accelerator