[Beowulf] Nvidia K20 + Supermicro mobo

Alex Chekholko alex.chekholko at gmail.com
Tue Jul 16 11:43:26 PDT 2013


I see on our GPU compute nodes, configured by a colleague, we use this
kernel line during install:

# rocks list bootaction | grep gpu
gpuinstall:       vmlinuz-6.0-x86_64    initrd.img-6.0-x86_64 ks
ramdisk_size=150000 lang= devfs=nomount pxe kssendmac selinux=0 noipv6
ksdevice=bootif xdriver=vesa rdblacklist=nouveau nouveau.modeset=0

This is RHEL6 (Rocks 6.0) on HP SL250s hardware.  I think they didn't
boot correctly without blacklisting nouveau.

Hope that helps.

Regards,
Alex

On Tue, Jul 16, 2013 at 10:44 AM, Adam DeConinck <ajdecon at ajdecon.org> wrote:
> Hi Mikhail,
>
> 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.
>
> Disclaimer: I work at NVIDIA, but I haven't touched OpenSUSE in forever.
>
> Cheers,
> Adam
>
> On Tue, Jul 16, 2013 at 10:29 AM, Mikhail Kuzminsky <mikky_m at mail.ru> wrote:
>> I want to test NVIDIA GPU (PNY Tesla K20c) w/our own application for future using in our cluster. But I found problems w/NVIDIA driver (v.319.32) installation (OpenSUSE 12.3, kernel 3.7.10-1.1).
>>
>> 1st of all, before start of driver installation I've strange for me messages about BAR registers:
>> -----------------------from /var/log/messages------
>> 2013-07-04T01:43:43.666022+04:00 c6ws4 kernel: [ 0.421559] pci 0000:00:01.0: BAR 15: can't assign mem pref (size 0x18000000)
>> 2013-07-04T01:43:43.666024+04:00 c6ws4 kernel: [ 0.421563] pci 0000:00:01.0: BAR 14: assigned [mem 0xe1000000-0xe1ffffff]
>> 2013-07-04T01:43:43.666025+04:00 c6ws4 kernel: [ 0.421566] pci 0000:00:16.1: BAR 0: assigned [mem 0xe0001000-0xe000100f 64bit]
>> 2013-07-04T01:43:43.666026+04:00 c6ws4 kernel: [ 0.421576] pci 0000:01:00.0: BAR 1: can't assign mem pref (size 0x10000000)
>> 2013-07-04T01:43:43.666027+04:00 c6ws4 kernel: [ 0.421579] pci 0000:01:00.0: BAR 3: can't assign mem pref (size 0x2000000)
>> 2013-07-04T01:43:43.666027+04:00 c6ws4 kernel: [ 0.421581] pci 0000:01:00.0: BAR 0: assigned [mem 0xe1000000-0xe1ffffff]
>> 2013-07-04T01:43:43.666028+04:00 c6ws4 kernel: [ 0.421584] pci 0000:01:00.0: BAR 6: can't assign mem pref (size 0x80000)
>> 2013-07-04T01:43:43.666029+04:00 c6ws4 kernel: [ 0.421586] pci 0000:00:01.0: PCI bridge to [bus 01]
>> -----------------------------------------------------------------------------------------------
>>
>> May be it's hardware/BIOS (Supermicro X9SCA-F, last BIOS v.2.0b) error symptoms ? I tried both BIOS modes - "above 4G Decoding" enabled and disabled.
>>
>> It looks for me that NVIDIA driver uses BAR 1 (see below). Although it was also some unclear for me messages in nvidia-installer.log, installer shows that kernel interface of nvidia.ko was compiled, but then nvidia-installer.log contains
>>
>> --------------------------from nvidia-installer.log ----------------------------------
>> -> Kernel module load error: No such device
>> -> Kernel messages:
>> ...[ 25.286079] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
>> [ 1379.760532] nvidia: module license 'NVIDIA' taints kernel.
>> [ 1379.760536] Disabling lock debugging due to kernel taint
>> [ 1379.765158] nvidia 0000:01:00.0: enabling device (0140 -> 0142)
>> [ 1379.765165] NVRM: This PCI I/O region assigned to your NVIDIA device is invalid:
>> [ 1379.765165] NVRM: BAR1 is 0M @ 0x0 (PCI:0000:01:00.0)
>> [ 1379.765166] NVRM: The system BIOS may have misconfigured your GPU.
>> [ 1379.765169] nvidia: probe of 0000:01:00.0 failed with error -1
>> [ 1379.765177] NVRM: The NVIDIA probe routine failed for 1 device(s).
>> [ 1379.765178] NVRM: None of the NVIDIA graphics adapters were initialized!
>> ---------------------------------------------------------------------------------------------
>>
>> I add also lspci -v extraction :
>>
>> 01:00.0 3D controller: NVIDIA Corporation GK107 [Tesla K20c] (rev a1)
>>         Subsystem: NVIDIA Corporation Device 0982
>>         Flags: fast devsel, IRQ 11
>>         Memory at e1000000 (32-bit, non-prefetchable) [disabled] [size=16M]
>>         Memory at <unassigned> (64-bit, prefetchable) [disabled]
>>         Memory at <unassigned> (64-bit, prefetchable) [disabled]
>>
>> Does this kernel messages above means that I have hardware/BIOS problems or it may be some NVIDIA driver problems ?
>>
>> Mikhail Kuzminsky
>> Computer Assistance to Chemical Research Center
>> Zelinsky Institute of Organic Chemistry
>> Moscow
>>
>>
>>
>>
>>
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