Is there anyone know what zone 3 means in knl?

pyungyong — Wed, 25 May 2022 01:46:51 GMT

If zonesort is used as below while using knl (Xeon Phi 7250), a message indicating that zone 3 is not initialized is displayed.

[root@node0001 ~]# echo 0 > /sys/kernel/zone_sort_free_pages/nodeid; tail -n 1 /var/log/messages
May 25 10:42:54 node0001 kernel: zonesort: Zone 3 is not initialized
[root@node0001 ~]#

Below is the modinfo for the zonesort module in use, which was in the xpps package.

[root@node0001 ~]# modinfo zonesort
filename: /lib/modules/3.10.0-1062.el7.x86_64/weak-updates/zonesort.ko
version: 3.2.10
description: Zone's free list sorter
author: Intel Corporation
license: GPL v2
alias: zonesort_module
retpoline: Y
rhelversion: 7.7
srcversion: 00937434FBF5E291B8D9F88
depends:
vermagic: 3.10.0-1062.el7.x86_64 SMP mod_unload modversions

The current memory mode is cached.

[root@node0001 ~]# numactl -H
available: 1 nodes (0)
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67
node 0 size: 98207 MB
node 0 free: 86406 MB
node distances:
node 0
0: 10
[root@node0001 ~]#

What does zone 3 mean?

Is there any performance problem after this message is printed?

Anyone know how to solve it?

Re: Is there anyone know what zone 3 means in knl?

Victor_G_Intel — Wed, 25 May 2022 20:10:35 GMT

Hello pyungyong,

Thank you for submitting your question to this Intel® Community.

Due to this product being discontinued, Intel Customer Service no longer supports inquiries for it, but perhaps fellow community members have the knowledge to jump in and help. You may also find the Discontinued Products website helpful to address your request. Thank you for understanding.

Regards,

Victor G.

Intel Technical Support Technician

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Is there anyone know what zone 3 means in knl?

Re: Is there anyone know what zone 3 means in knl?