DPDK on bare-metal machine

DPDK on bare-metal machine

[Adeel Amin]

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Hello,

Can anyone tell me that how I can run a DPDK application as a bare-metal (i.e. without Linux support). I've tried to run rump kernel TCP/IP stack by Antti Kantee but I'm unable to figure out that how I'll be using it to run stand alone on x86 CPU. Currently I'm running the rump kernel as a Linux application.
Thank you.
Adeel Amin
Email:  adeel_amin-PkbjNfxxIARBDgjK7y7TUQ@public.gmane.org

 		 	   		   		 	   		  

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Re: DPDK on bare-metal machine

[Antti Kantee]

On 19.06.2013 09:20, Adeel Amin wrote:
> Hello,
>
> Can anyone tell me that how I can run a DPDK application as a bare-metal (i.e. without Linux support). I've tried to run rump kernel TCP/IP stack by Antti Kantee but I'm unable to figure out that how I'll be using it to run stand alone on x86 CPU. Currently I'm running the rump kernel as a Linux application.

Hi,

As far as I've been able to gather, the open source version of DPDK does 
not include bare-metal support.  However, I'm not very knowledgeable on 
DPDK, especially on code which I cannot read myself, so maybe someone 
else can answer that better.

I do know something about rump kernels, though.  One of main future use 
cases I see is indeed to have them run on bare metal and therefore allow 
to continue use essential kernel-only implemented features but still get 
rid of the prehistoric OS overhead layer.  I have good reason to suspect 
that running rump kernels this would be easy, but as far as I know, no 
one has done the necessary work, at least not for x86.  Unless the 
bare-metal version of DPDK provides a suitable portability layer, you'd 
be looking at implementing the rump kernel hypervisor interface for bare 
metal (or bare firmware ?-).  In such a case, you might find using that 
using also the device layer from a rump kernel is the shortest path to 
initial success, with migration to DPDK only after reaching stability in 
that setup.

But, that's getting quite off-topic for this list.  Contact me off-list 
if you are serious about putting effort into the above.

   - antti

Re: DPDK on bare-metal machine

[Jia.Sui(贾睢)]

Hi Antti

As the DPDK release note said:
The Intel®DPDK Bare-metal features will now be provided off-roadmap to a limited set of customers on a case-by-case basis at this time. 
Please contact your Intel representative if you wish to be considered as an evaluation candidate for the Baremetal features. 

I haven't use bare-metal before. Sorry..

BRs
Jia Sui

-----Original Message-----
From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Antti Kantee
Sent: Wednesday, June 19, 2013 4:28 PM
To: Adeel Amin
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] DPDK on bare-metal machine

On 19.06.2013 09:20, Adeel Amin wrote:
> Hello,
>
> Can anyone tell me that how I can run a DPDK application as a bare-metal (i.e. without Linux support). I've tried to run rump kernel TCP/IP stack by Antti Kantee but I'm unable to figure out that how I'll be using it to run stand alone on x86 CPU. Currently I'm running the rump kernel as a Linux application.

Hi,

As far as I've been able to gather, the open source version of DPDK does 
not include bare-metal support.  However, I'm not very knowledgeable on 
DPDK, especially on code which I cannot read myself, so maybe someone 
else can answer that better.

I do know something about rump kernels, though.  One of main future use 
cases I see is indeed to have them run on bare metal and therefore allow 
to continue use essential kernel-only implemented features but still get 
rid of the prehistoric OS overhead layer.  I have good reason to suspect 
that running rump kernels this would be easy, but as far as I know, no 
one has done the necessary work, at least not for x86.  Unless the 
bare-metal version of DPDK provides a suitable portability layer, you'd 
be looking at implementing the rump kernel hypervisor interface for bare 
metal (or bare firmware ?-).  In such a case, you might find using that 
using also the device layer from a rump kernel is the shortest path to 
initial success, with migration to DPDK only after reaching stability in 
that setup.

But, that's getting quite off-topic for this list.  Contact me off-list 
if you are serious about putting effort into the above.

   - antti

Re: DPDK on bare-metal machine

[Stephen Hemminger]

With latest (3.9 or later) kernels the overhead from Linux kernel is minimal and shrinking
fast. The only overhead left is the timer tick and that is being eliminated.
Of course it is easy to write slow code and use system calls and defeat the purpose of DPDK.

Has anyone experimented with making the DPDK threads marked as real-time to keep
other processes away?

Re: DPDK on bare-metal machine

[Stephen Hemminger]

The following might be interesting to you.

https://speakerdeck.com/multicorenz/bare-metal-multicore-performance-in-a-general-purpose-operating-system

It describes recent work to get kernel out of the way.

On Wed, Jun 19, 2013 at 12:20 AM, Adeel Amin <adeel_amin-PkbjNfxxIARBDgjK7y7TUQ@public.gmane.org> wrote:
> Hello,
>
> Can anyone tell me that how I can run a DPDK application as a bare-metal
> (i.e. without Linux support). I've tried to run rump kernel TCP/IP stack by
> Antti Kantee but I'm unable to figure out that how I'll be using it to run
> stand alone on x86 CPU. Currently I'm running the rump kernel as a Linux
> application.
>
> Thank you.
>
> Adeel Amin
> Email:  adeel_amin-PkbjNfxxIARBDgjK7y7TUQ@public.gmane.org
>