[Beowulf] Nvidia K20 + Supermicro mobo

Mikhail Kuzminsky mikky_m at mail.ru
Tue Jul 16 10:29:33 PDT 2013

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

More information about the Beowulf mailing list