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Subject: Re: [OMPI users] profile the performance of a MPI code: how much traffic is being generated?
From: Peter Kjellstrom (cap_at_[hidden])
Date: 2009-09-30 16:16:58


On Tuesday 29 September 2009, Rahul Nabar wrote:
> On Tue, Sep 29, 2009 at 10:40 AM, Eugene Loh <Eugene.Loh_at_[hidden]> wrote:
> > to know.  It sounds like you want to be able to watch some % utilization
> > of a hardware interface as the program is running.  I *think* these tools
> > (the ones on the FAQ, including MPE, Vampir, and Sun Studio) are not of
> > that class.
>
> You are correct. A real time tool would be best that sniffs at the MPI
> traffic. Post mortem profilers would be the next best option I assume.
> I was trying to compile MPE but gave up. Too many errors. Trying to
> decide if I should prod on or look at another tool.

Not MPI aware, but, you could watch network traffic with a tool such as
collectl in real-time.

/Peter