[dpdk-dev] non-x86 ? Re: Would DPDK run on AMD processors

[dpdk-dev] non-x86 ? Re: Would DPDK run on AMD processors

[Derek Wasely]

how about running DPDK on other processors ?   Any licensing restriction on using it on non-x86 arch ?  Does it work automatically on say  PPC or OCTEON ?


Derek

--

Hi,

Has anybody attempted to run DPDK on AMD processors.
Does it run straightforward or would there be some obvious issues where
porting would be needed, I welcome any comments.

Regards
-Prashant

From anjali@juniper.net  Thu Jul  3 16:40:19 2014
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From: Anjali Kulkarni <anjali@juniper.net>
To: "dev@dpdk.org" <dev@dpdk.org>
Thread-Topic: Question on huge pages and running DPDK apps inside containers
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Subject: [dpdk-dev] Question on huge pages and running DPDK apps inside
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Hi,

I am encountering a problem running DPDK apps inside containers, and need your help:

I create containers by doing:

lxc-create -t ubuntu -n fpc0
lxc-start -n fpc0

(Reserve hugepages and follow all other steps to run the DPDK app on host)

Then run a standard dpdk app, on host, it works fine, inside container, it runs into this problem:

ubuntu@fpc0:/dpdk/x86_64-default-linuxapp-gcc/app$ ./testpmd -c f -n 4 -- -i
rte_eal_init : 857
opt : 99
opt : 110
EAL: No free hugepages reported in hugepages-2048kB
PANIC in rte_eal_init():
Cannot get hugepage information
6: [./testpmd() [0x402941]]
5: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f7f14f50ec5]]
4: [./testpmd() [0x40237e]]
3: [./testpmd() [0x478edb]]
2: [./testpmd() [0x4022ad]]
1: [./testpmd() [0x47e3c3]]
Aborted
ubuntu@fpc0:/dpdk/x86_64-default-linuxapp-gcc/app$

However, running this same app on the host, or doing lxc-execute works.

While trying to debug my own dpdk app, I see that reading the same file for no of huge pages (

/sys/kernel/mm/hugepages/hugepages-2048kB/free_hugepages

 ), on the host, its value is read 2048, while inside the container it is 0. This is same file.
Also, if you cat the contents of this file, it is actually 0! (nr_hugepages is 2048, but the DPDK code does not read this file.)

cat /sys/kernel/mm/hugepages/hugepages-2048kB/free_hugepages
0


In the below logs, the 2 prints "EAL: Using .." and "EAL: path ..." are added by me in DPDL eal library.

On host:
rte_eal_init : 859
opt : 99
opt : 110
EAL: Using free_hugepages
EAL: path /sys/kernel/mm/hugepages/hugepages-2048kB/free_hugepages
EAL: No of hugepages is 2048

Inside container:
pt : 99
opt : 110
EAL: Using free_hugepages
EAL: path /sys/kernel/mm/hugepages/hugepages-2048kB/free_hugepages
EAL: No of hugepages is 0


Has anyone run into this problem and know what's the issue?

Anjali

Re: [dpdk-dev] non-x86 ? Re: Would DPDK run on AMD processors

[Yerden Zhumabekov]

Intel DPDK is intentionally being developed to bring support of packet
processing
to Intel processors. In order to provide high performance in packet
processing,
developing Intel DPDK requires rather good optimization, like extensive
use of
SSE intrinsics etc. Hence it demands x86 arch.

Since Intel DPDK is opensource, there is no license restriction to run
it on any arch,
but I guess one will face rather intriguing technical issues doing that :)

03.07.2014 19:35, Derek Wasely пишет:
> how about running DPDK on other processors ?   Any licensing restriction on using it on non-x86 arch ?  Does it work automatically on say  PPC or OCTEON ?

-- 
Sincerely,

Yerden Zhumabekov
STS, ACI
Astana, KZ

Re: [dpdk-dev] non-x86 ? Re: Would DPDK run on AMD processors

[Irfan Zia]

hi Derek,
   we completed a  DPDK  port onto the Tilera's TILE-GX architecture
'Natively' for a customer. Specifically it was on the Gx-36 (36 Tiles) PCIe
card.   Their  team is able to directly take their Host DPDK apps  (NFV
modules and tunnels generators)  and reuse them on the TileNcore-36 PCIe
card 'as-is',   Allowing them to build their system with much economical
and lower power host CPU (Atom 330).

   we are currently completing similar port for Cavium's OCTEON -II.

   And Yergen is right,  we had to resolve many intriguing technical issues
;-)

-irfan
VP Eng
Paxym Inc.
www.paxym.com


On Fri, Jul 4, 2014 at 4:25 PM, Yerden Zhumabekov <e_zhumabekov@sts.kz>
wrote:

> Intel DPDK is intentionally being developed to bring support of packet
> processing
> to Intel processors. In order to provide high performance in packet
> processing,
> developing Intel DPDK requires rather good optimization, like extensive
> use of
> SSE intrinsics etc. Hence it demands x86 arch.
>
> Since Intel DPDK is opensource, there is no license restriction to run
> it on any arch,
> but I guess one will face rather intriguing technical issues doing that :)
>
> 03.07.2014 19:35, Derek Wasely пишет:
> > how about running DPDK on other processors ?   Any licensing restriction
> on using it on non-x86 arch ?  Does it work automatically on say  PPC or
> OCTEON ?
>
> --
> Sincerely,
>
> Yerden Zhumabekov
> STS, ACI
> Astana, KZ
>
>