Re: perf-stat per thread results

[Juri Lelli <juri.lelli@gmail.com>]

Hi,

On 05/13/2011 05:14 PM, Wim Heirman wrote:
> Hi all,
>
> I'm using perf-stat to look at hardware performance counters for a
> parallel program. Is there a way to get counter values for each thread
> individually, rather than aggregated for the whole process? I know I
> can attach to a specific thread using --tid=, but due to the time
> required to find the tid and attach/detach this isn't accurate for
> short-running programs.
> Or, alternatively, can I use perf record --stat and get an exact count
> for each performance counter?
>

What about using PAPI library (http://icl.cs.utk.edu/papi/)?
It can be built on top of the perf subsystem and allows to get counters 
values on a pre-thread basis.
I used it for some experiments and works very well.

Cheers,
	Juri

-- 
Juri Lelli
Via G. Moruzzi 1, 56124 Pisa (PI), Italy
Scuola Superiore Sant'Anna
TeCIP, ReTiS Lab

Web Site: http://retis.sssup.it/~jlelli | Skype: jurile2712
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