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List:       dpdk-dev
Subject:    FW: [PATCH v1] buildtools: ensure the NUMA nodes are counted correct
From:       Nole Zhang <peng.zhang () corigine ! com>
Date:       2022-08-31 8:47:24
Message-ID: BL0PR13MB4450527424B1C427875F0467EF789 () BL0PR13MB4450 ! namprd13 ! prod ! outlook ! com
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> -----Original Message-----
> From: Thomas Monjalon <thomas@monjalon.net>
> Sent: 2022Äê8Ô 29ÈÕ 21:15
> To: Nole Zhang <peng.zhang@corigine.com>; Chaoyong He 
> <chaoyong.he@corigine.com>
> Subject: Re: [PATCH v1] buildtools: ensure the NUMA nodes are counted 
> correct
> 
> 29/08/2022 13:17, Nole Zhang:
> > From: Thomas Monjalon <thomas@monjalon.net>
> > > 02/08/2022 09:54, Chaoyong He:
> > > > From: Peng Zhang <peng.zhang@corigine.com>
> > > > 
> > > > Sorting a list of strings with the format "node[0-9]+" in order 
> > > > to find the largest integer by looking at the last item after 
> > > > the sort breaks. But if there are more then 10 items as a string 
> > > > sort will sort "node10" before "node2", it will get the error NUMA nodes.
> > > 
> > > What is the error you are seeing?
> > > 
> > > 
> > We get the error NUMA, in this example, we get the NUMA nodes is 10, 
> > But at fact, it has 11 NUMA.
> 
> Please give more details, where do you see this error?
> We should know how to reproduce and check we have the same issue.
> Thanks
> 
> Please reply with a detailed answer on the mailing list.
> 
In the China Phytium S2500 CPU + INSPUR server, it has 16 NUMA.
The details are as follows:

~#: lscpu

Architecture:        aarch64
CPU op-mode(s):      64-bit
Byte Order:          Little Endian
CPU(s):              128
On-line CPU(s) list: 0-127
Thread(s) per core:  1
Core(s) per socket:  64
Socket(s):           2
NUMA node(s):        16
Vendor ID:           0x70
Model:               3
Model name:          S2500
Stepping:            0x1
BogoMIPS:            100.00
L1d cache:           4 MiB
L1i cache:           4 MiB
L2 cache:            64 MiB
L3 cache:            128 MiB
NUMA node0 CPU(s):   0-7
NUMA node1 CPU(s):   8-15
NUMA node2 CPU(s):   16-23
NUMA node3 CPU(s):   24-31
NUMA node4 CPU(s):   32-39
NUMA node5 CPU(s):   40-47
NUMA node6 CPU(s):   48-55
NUMA node7 CPU(s):   56-63
NUMA node8 CPU(s):   64-71
NUMA node9 CPU(s):   72-79
NUMA node10 CPU(s):  80-87
NUMA node11 CPU(s):  88-95
NUMA node12 CPU(s):  96-103
NUMA node13 CPU(s):  104-111
NUMA node14 CPU(s):  112-119
NUMA node15 CPU(s):  120-127
Flags:               half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt \
lpae evtstrm


I use  meson build -Dmax_lcores=detect -Dmax_numa_nodes=detect to compile, then dpdk \
initialization only shows 10 numa. 


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