[dpdk-users] Invalid NUMA socket when running helloworld on VM linux

[Changchun Zhang]

Thanks, so how can I make sure my platform support NUMA or kernel supports NUMA. I ran the command below:

 

[changczh at t480-OL7 ~]$ numactl --show

policy: default

preferred node: current

physcpubind: 0 1 2 3

cpubind: 0

nodebind: 0

membind: 0

[changczh at t480-OL7 ~]$ numactl --hardware

available: 1 nodes (0)

node 0 cpus: 0 1 2 3

node 0 size: 2047 MB

node 0 free: 146 MB

node distances:

node   0

  0:  10

[changczh at t480-OL7 ~]$ grep -i numa /var/log/dmesg

[    0.000000] No NUMA configuration found

 

Changchun (Alex)

 

From: Dheeraj Dang [mailto:dheerajdang138 at gmail.com] 
Sent: Tuesday, March 05, 2019 1:36 AM
To: Changchun Zhang <changchun.zhang at oracle.com>
Cc: users at dpdk.org
Subject: Re: [dpdk-users] Invalid NUMA socket when running helloworld on VM linux

 

Yes, it makes sense to ignore this log 

when the platform does not support NUMA or kernel is compiled without NUMA support. 

Regards

Dheeraj Dang

 

 

On Tue, Mar 5, 2019 at 1:02 AM Changchun Zhang <HYPERLINK "mailto:changchun.zhang at oracle.com"changchun.zhang at oracle.com> wrote:

Thank you Dheeraj, but looks like the system is not allowing me to change it.

I saw in preivous thread that it is suggested to ignore this log at all. 

HYPERLINK "https://urldefense.proofpoint.com/v2/url?u=http-3A__mails.dpdk.org_archives_users_2017-2DDecember_002742.html&d=DwMFaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=VCO7jqQFACS5pfBnqRHRln4bZ3htFERYZ3PkX0ytpns&m=19j8M4hWMogD8-1YEFedt2R5_Q8wpPScygHeGb4FB0E&s=XRhPXPv7gXLn2bt7T1no0hdADSN9VavpseWUhAc66Mg&e="http://mails.dpdk.org/archives/users/2017-December/002742.html

 

Does it make sense?

 

Changchun (Alex)

 

From: Dheeraj Dang [mailto:HYPERLINK "mailto:dheerajdang138 at gmail.com"dheerajdang138 at gmail.com] 
Sent: Sunday, March 03, 2019 4:58 AM
To: Changchun Zhang <HYPERLINK "mailto:changchun.zhang at oracle.com"changchun.zhang at oracle.com>
Cc: HYPERLINK "mailto:users at dpdk.org"users at dpdk.org
Subject: Re: [dpdk-users] Invalid NUMA socket when running helloworld on VM linux

 

Hi Changchun, 

You can set numa_node using this command

 

echo 0 > /sys/devices/pci0000\:00/<pci_id>/numa_node (if numa node is 0)

echo 1 > /sys/devices/pci0000\:00/<pci_id>/numa_node (if numa node is 1)

In logs, you are seeing its invalid value i.e -1. 



Regards

Dheeraj Dang

 

 

On Sun, Mar 3, 2019 at 4:22 AM Changchun Zhang <HYPERLINK "mailto:changchun.zhang at oracle.com"changchun.zhang at oracle.com> wrote:

 

Hi Gurus,



I launched a virtual box based linux on my windows, and my PC is thinkpad T480. 

After configured the huge pages as number of 2MBs and the cpu number as 4 on the vm linux, I build DPDK and run the example of hellowworld but get the below output, in which I saw the "invalid NUMA socket". What does it mean and does it matter, as I see the hello from core # is also printed.



[~ build]$ sudo ./helloworld 

EAL: Detected 4 lcore(s)

EAL: Detected 1 NUMA nodes

EAL: Multi-process socket /var/run/dpdk/rte/mp_socket

EAL: Probing VFIO support...

EAL: PCI device 0000:00:03.0 on NUMA socket -1

EAL:   Invalid NUMA socket, default to 0

EAL:   probe driver: 8086:100e net_e1000_em

hello from core 1

hello from core 2

hello from core 3

hello from core 0