Re: [OMPI devel] Recommended tool to measure packet counters

2013-12-18 Thread Siddhartha Jana 
Ah got it ! Thanks

-- Sid


On 18 December 2013 07:44, Jeff Squyres (jsquyres) wrote:

> On Dec 14, 2013, at 8:02 AM, Siddhartha Jana 
> wrote:
>
> > Is there a preferred method/tool among developers of MPI-library for
> checking the count of the packets transmitted by the network card during
> two-sided communication?
> >
> > Is the use of
> > iptables -I INPUT -i eth0
> > iptables -I OUTPUT -o eth0
> >
> > recommended ?
>
> If you're using an ethernet, non-OS-bypass transport (e.g., TCP), you
> might also want to look at ethtool.
>
> Note that these counts will include control messages sent by Open MPI, too
> -- not just raw MPI traffic.  They also will not include any traffic sent
> across shared memory (or other transports).
>
> --
> Jeff Squyres
> jsquy...@cisco.com
> For corporate legal information go to:
> http://www.cisco.com/web/about/doing_business/legal/cri/
>
> ___
> devel mailing list
> de...@open-mpi.org
> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>

Re: [OMPI devel] Recommended tool to measure packet counters

2013-12-18 Thread Jeff Squyres (jsquyres) 
On Dec 14, 2013, at 8:02 AM, Siddhartha Jana  wrote:

> Is there a preferred method/tool among developers of MPI-library for checking 
> the count of the packets transmitted by the network card during two-sided 
> communication?
> 
> Is the use of
> iptables -I INPUT -i eth0
> iptables -I OUTPUT -o eth0
> 
> recommended ?

If you're using an ethernet, non-OS-bypass transport (e.g., TCP), you might 
also want to look at ethtool.

Note that these counts will include control messages sent by Open MPI, too -- 
not just raw MPI traffic.  They also will not include any traffic sent across 
shared memory (or other transports).

-- 
Jeff Squyres
jsquy...@cisco.com
For corporate legal information go to: 
http://www.cisco.com/web/about/doing_business/legal/cri/

[OMPI devel] Recommended tool to measure packet counters

2013-12-14 Thread Siddhartha Jana 
Is there a preferred method/tool among developers of MPI-library for
checking the count of the packets transmitted by the network card during
two-sided communication?

Is the use of
iptables -I INPUT -i eth0
iptables -I OUTPUT -o eth0

recommended ?

Thanks,
Siddhartha